/* src/vm/jit/allocator/simplereg.c - register allocator
- Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
+ Copyright (C) 1996-2005, 2007 R. Grafl, A. Krall, C. Kruegel, C. Oates,
R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
Institut f. Computersprachen - TU Wien
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.
- Contact: cacao@complang.tuwien.ac.at
-
- Authors: Andreas Krall
-
- Changes: Stefan Ring
- Christian Thalinger
- Christian Ullrich
- Michael Starzinger
-
- $Id: simplereg.c 4067 2006-01-02 14:32:50Z christian $
-
*/
#include "config.h"
-#include "vm/types.h"
#include <assert.h>
+#include <stdint.h>
+
+#include "vm/types.h"
#include "arch.h"
#include "md-abi.h"
+#include "mm/memory.h"
+
#include "vm/builtin.h"
#include "vm/exceptions.h"
-#include "mm/memory.h"
-#include "vm/method.h"
-#include "vm/options.h"
#include "vm/resolve.h"
#include "vm/stringlocal.h"
+
+#include "vm/jit/abi.h"
#include "vm/jit/reg.h"
+#include "vm/jit/show.h"
#include "vm/jit/allocator/simplereg.h"
-/* function prototypes for this file */
+#include "vmcore/method.h"
+#include "vmcore/options.h"
+
+
+#if 0
+# define LOG(args) printf args
+#else
+# define LOG(args)
+#endif
+
+
+/* function prototypes for this file ******************************************/
+
+static void simplereg_allocate_interfaces(jitdata *jd);
+static void simplereg_allocate_locals(jitdata *jd);
+static void simplereg_allocate_temporaries(jitdata *jd);
+
+
+/* size of a stackslot used by the internal ABI */
+
+#if defined(HAS_4BYTE_STACKSLOT)
+# define SIZE_OF_STACKSLOT 4
+#else
+# define SIZE_OF_STACKSLOT 8
+#endif
+
+
+/* total number of registers */
+
+#if defined(HAS_ADDRESS_REGISTER_FILE)
+#define TOTAL_REG_CNT (INT_REG_CNT + FLT_REG_CNT + ADR_REG_CNT)
+#else
+#define TOTAL_REG_CNT (INT_REG_CNT + FLT_REG_CNT)
+#endif
+
+
+/* macros for handling register stacks ****************************************/
+
+#define AVAIL_FRONT(cnt, limit) ((cnt) < (limit))
+#define AVAIL_BACK(cnt) ((cnt) > 0)
+
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#define AVAIL_FRONT_INT(cnt, limit) ((cnt) < (limit) - intregsneeded)
+#define AVAIL_BACK_INT(cnt) ((cnt) > intregsneeded)
+#else
+#define AVAIL_FRONT_INT(cnt, limit) AVAIL_FRONT(cnt, limit)
+#define AVAIL_BACK_INT(cnt) AVAIL_BACK(cnt)
+#endif
+
+#define POP_FRONT(stk, cnt, reg) do { reg = stk[cnt++]; } while (0)
+#define POP_BACK(stk, cnt, reg) do { reg = stk[--cnt]; } while (0)
+#define PUSH_FRONT(stk, cnt, reg) do { stk[--cnt] = (reg); } while (0)
+#define PUSH_BACK(stk, cnt, reg) do { stk[cnt++] = (reg); } while (0)
+
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#define POP_FRONT_INT(stk, cnt, reg) \
+ do { \
+ if (intregsneeded) { \
+ reg = PACK_REGS(stk[cnt], stk[cnt+1]); \
+ cnt += 2; \
+ } \
+ else \
+ POP_FRONT(stk, cnt, reg); \
+ } while (0)
+#else
+#define POP_FRONT_INT(stk, cnt, reg) POP_FRONT(stk, cnt, reg)
+#endif
+
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#define POP_BACK_INT(stk, cnt, reg) \
+ do { \
+ if (intregsneeded) { \
+ cnt -= 2; \
+ reg = PACK_REGS(stk[cnt], stk[cnt+1]); \
+ } \
+ else \
+ POP_BACK(stk, cnt, reg); \
+ } while (0)
+#else
+#define POP_BACK_INT(stk, cnt, reg) POP_BACK(stk, cnt, reg)
+#endif
+
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#define PUSH_BACK_INT(stk, cnt, reg) \
+ do { \
+ if (intregsneeded) { \
+ stk[cnt] = GET_LOW_REG(reg); \
+ stk[cnt + 1] = GET_HIGH_REG(reg); \
+ cnt += 2; \
+ } \
+ else \
+ PUSH_BACK(stk, cnt, reg); \
+ } while (0)
+#else
+#define PUSH_BACK_INT(stk, cnt, reg) PUSH_BACK(stk, cnt, reg)
+#endif
+
+#define AVAIL_ARG_FLT AVAIL_FRONT(rd->argfltreguse, FLT_ARG_CNT)
+#define AVAIL_TMP_FLT AVAIL_BACK(rd->tmpfltreguse)
+#define AVAIL_SAV_FLT AVAIL_BACK(rd->savfltreguse)
+
+#define AVAIL_ARG_ADR AVAIL_FRONT(rd->argadrreguse, ADR_ARG_CNT)
+#define AVAIL_TMP_ADR AVAIL_BACK(rd->tmpadrreguse)
+#define AVAIL_SAV_ADR AVAIL_BACK(rd->savadrreguse)
+
+#define AVAIL_ARG_INT AVAIL_FRONT_INT(rd->argintreguse, INT_ARG_CNT)
+#define AVAIL_TMP_INT AVAIL_BACK_INT(rd->tmpintreguse)
+#define AVAIL_SAV_INT AVAIL_BACK_INT(rd->savintreguse)
+
+#define AVAIL_FREE_ARG_FLT AVAIL_BACK(rd->freeargflttop)
+#define AVAIL_FREE_TMP_FLT AVAIL_BACK(rd->freetmpflttop)
+#define AVAIL_FREE_SAV_FLT AVAIL_BACK(rd->freesavflttop)
+
+#define AVAIL_FREE_ARG_ADR AVAIL_BACK(rd->freeargadrtop)
+#define AVAIL_FREE_TMP_ADR AVAIL_BACK(rd->freetmpadrtop)
+#define AVAIL_FREE_SAV_ADR AVAIL_BACK(rd->freesavadrtop)
+
+#define AVAIL_FREE_ARG_INT AVAIL_BACK_INT(rd->freearginttop)
+#define AVAIL_FREE_TMP_INT AVAIL_BACK_INT(rd->freetmpinttop)
+#define AVAIL_FREE_SAV_INT AVAIL_BACK_INT(rd->freesavinttop)
+
+#define TAKE_ARG_FLT(r) POP_FRONT(abi_registers_float_argument, rd->argfltreguse, r)
+#define TAKE_TMP_FLT(r) POP_BACK(rd->tmpfltregs, rd->tmpfltreguse, r)
+#define TAKE_SAV_FLT(r) POP_BACK(rd->savfltregs, rd->savfltreguse, r)
+
+#define TAKE_ARG_ADR(r) POP_FRONT(rd->argadrregs, rd->argadrreguse, r)
+#define TAKE_TMP_ADR(r) POP_BACK(rd->tmpadrregs, rd->tmpadrreguse, r)
+#define TAKE_SAV_ADR(r) POP_BACK(rd->savadrregs, rd->savadrreguse, r)
+
+#define TAKE_ARG_INT(r) POP_FRONT_INT(abi_registers_integer_argument, rd->argintreguse, r)
+#define TAKE_TMP_INT(r) POP_BACK_INT(rd->tmpintregs, rd->tmpintreguse, r)
+#define TAKE_SAV_INT(r) POP_BACK_INT(rd->savintregs, rd->savintreguse, r)
+
+#define TAKE_FREE_ARG_FLT(r) POP_BACK(rd->freeargfltregs, rd->freeargflttop, r)
+#define TAKE_FREE_TMP_FLT(r) POP_BACK(rd->freetmpfltregs, rd->freetmpflttop, r)
+#define TAKE_FREE_SAV_FLT(r) POP_BACK(rd->freesavfltregs, rd->freesavflttop, r)
+
+#define TAKE_FREE_ARG_ADR(r) POP_BACK(rd->freeargadrregs, rd->freeargadrtop, r)
+#define TAKE_FREE_TMP_ADR(r) POP_BACK(rd->freetmpadrregs, rd->freetmpadrtop, r)
+#define TAKE_FREE_SAV_ADR(r) POP_BACK(rd->freesavadrregs, rd->freesavadrtop, r)
+
+#define TAKE_FREE_ARG_INT(r) POP_BACK_INT(rd->freeargintregs, rd->freearginttop, r)
+#define TAKE_FREE_TMP_INT(r) POP_BACK_INT(rd->freetmpintregs, rd->freetmpinttop, r)
+#define TAKE_FREE_SAV_INT(r) POP_BACK_INT(rd->freesavintregs, rd->freesavinttop, r)
+
+#define PUSH_FREE_ARG_FLT(r) PUSH_BACK(rd->freeargfltregs, rd->freeargflttop, r)
+#define PUSH_FREE_TMP_FLT(r) PUSH_BACK(rd->freetmpfltregs, rd->freetmpflttop, r)
+#define PUSH_FREE_SAV_FLT(r) PUSH_BACK(rd->freesavfltregs, rd->freesavflttop, r)
+
+#define PUSH_FREE_ARG_ADR(r) PUSH_BACK(rd->freeargadrregs, rd->freeargadrtop, r)
+#define PUSH_FREE_TMP_ADR(r) PUSH_BACK(rd->freetmpadrregs, rd->freetmpadrtop, r)
+#define PUSH_FREE_SAV_ADR(r) PUSH_BACK(rd->freesavadrregs, rd->freesavadrtop, r)
+
+#define PUSH_FREE_ARG_INT(r) PUSH_BACK_INT(rd->freeargintregs, rd->freearginttop, r)
+#define PUSH_FREE_TMP_INT(r) PUSH_BACK_INT(rd->freetmpintregs, rd->freetmpinttop, r)
+#define PUSH_FREE_SAV_INT(r) PUSH_BACK_INT(rd->freesavintregs, rd->freesavinttop, r)
+
+
+/* macros for allocating memory slots ****************************************/
+
+#define NEW_MEM_SLOT(r) \
+ do { \
+ (r) = rd->memuse * SIZE_OF_STACKSLOT; \
+ rd->memuse += memneeded + 1; \
+ } while (0)
+
+#define NEW_MEM_SLOT_ALIGNED(r) \
+ do { \
+ if ( (memneeded) && (rd->memuse & 1)) \
+ rd->memuse++; \
+ (r) = rd->memuse * SIZE_OF_STACKSLOT; \
+ rd->memuse += memneeded + 1; \
+ } while (0)
+
+#define NEW_MEM_SLOT_ALIGNED_REUSE_PADDING(r) \
+ do { \
+ if ( (memneeded) && (rd->memuse & 1)) { \
+ PUSH_BACK(rd->freemem, rd->freememtop, rd->memuse); \
+ rd->memuse++; \
+ } \
+ (r) = rd->memuse * SIZE_OF_STACKSLOT; \
+ rd->memuse += memneeded + 1; \
+ } while (0)
+
+#if defined(ALIGN_LONGS_IN_MEMORY)
+#define NEW_MEM_SLOT_INT_LNG(r) NEW_MEM_SLOT_ALIGNED(r)
+#else
+#define NEW_MEM_SLOT_INT_LNG(r) NEW_MEM_SLOT(r)
+#endif
+
+#if defined(ALIGN_DOUBLES_IN_MEMORY)
+#define NEW_MEM_SLOT_FLT_DBL(r) NEW_MEM_SLOT_ALIGNED(r)
+#else
+#define NEW_MEM_SLOT_FLT_DBL(r) NEW_MEM_SLOT(r)
+#endif
+
+#if defined(ALIGN_LONGS_IN_MEMORY) || defined(ALIGN_DOUBLES_IN_MEMORY)
+#define NEW_MEM_SLOT_REUSE_PADDING(r) NEW_MEM_SLOT_ALIGNED_REUSE_PADDING(r)
+#else
+#define NEW_MEM_SLOT_REUSE_PADDING(r) NEW_MEM_SLOT(r)
+#endif
+
+
+/* macros for creating/freeing temporary variables ***************************/
+
+#define NEW_TEMP_REG(index) \
+ if ( ((index) >= jd->localcount) \
+ && (!(VAR(index)->flags & (INOUT | PREALLOC))) ) \
+ simplereg_new_temp(jd, (index))
-static void interface_regalloc(methodinfo *m, codegendata *cd, registerdata *rd);
-static void local_regalloc(methodinfo *m, codegendata *cd, registerdata *rd);
-static void allocate_scratch_registers(methodinfo *m, registerdata *rd);
+#define FREE_TEMP_REG(index) \
+ if (((index) > jd->localcount) \
+ && (!(VAR(index)->flags & (PREALLOC)))) \
+ simplereg_free_temp(jd, (index))
-/* function interface_regalloc *************************************************
- allocates registers for all interface variables
+/* macro for getting a unique register index *********************************/
+
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#define REG_INDEX_NON_ADR(regoff, type) \
+ (IS_FLT_DBL_TYPE(type) ? (INT_REG_CNT + (regoff)) : (GET_LOW_REG(regoff)))
+#else
+#define REG_INDEX_NON_ADR(regoff, type) \
+ (IS_FLT_DBL_TYPE(type) ? (INT_REG_CNT + (regoff)) : (regoff))
+#endif
+
+#if defined(HAS_ADDRESS_REGISTER_FILE)
+#define REG_INDEX(regoff, type) \
+ (IS_ADR_TYPE(type) ? (regoff) : (ADR_REG_CNT + REG_INDEX_NON_ADR(regoff, type)))
+#else
+#define REG_INDEX(regoff, type) REG_INDEX_NON_ADR(regoff, type)
+#endif
+
+
+/* regalloc ********************************************************************
+
+ Does a simple register allocation.
*******************************************************************************/
-void regalloc(methodinfo *m, codegendata *cd, registerdata *rd)
+bool regalloc(jitdata *jd)
{
- interface_regalloc(m, cd, rd);
- allocate_scratch_registers(m, rd);
- local_regalloc(m, cd, rd);
+ /* There is a problem with the use of unused float argument
+ registers in leafmethods for stackslots on c7 (2 * Dual Core
+ AMD Opteron(tm) Processor 270) - runtime for the jvm98 _mtrt
+ benchmark is heaviliy increased. This could be prevented by
+ setting rd->argfltreguse to FLT_ARG_CNT before calling
+ simplereg_allocate_temporaries and setting it back to the original
+ value before calling simplereg_allocate_locals. */
+
+ simplereg_allocate_interfaces(jd);
+ simplereg_allocate_temporaries(jd);
+ simplereg_allocate_locals(jd);
+
+ /* everthing's ok */
+
+ return true;
}
-/* function interface_regalloc *************************************************
+/* simplereg_allocate_interfaces ***********************************************
- allocates registers for all interface variables
+ Allocates registers for all interface variables.
*******************************************************************************/
-static void interface_regalloc(methodinfo *m, codegendata *cd, registerdata *rd)
+static void simplereg_allocate_interfaces(jitdata *jd)
{
+ methodinfo *m;
+ codegendata *cd;
+ registerdata *rd;
+
int s, t, tt, saved;
int intalloc, fltalloc; /* Remember allocated Register/Memory offset */
- /* in case a more vars are packed into this interface slot */
- varinfo *v;
- int intregsneeded = 0;
+ /* in case more vars are packed into this interface slot */
int memneeded = 0;
- /* allocate LNG and DBL Types first to ensure 2 memory slots or registers */
- /* on HAS_4BYTE_STACKSLOT architectures */
+ /* Allocate LNG and DBL types first to ensure 2 memory slots or */
+ /* registers on HAS_4BYTE_STACKSLOT architectures. */
int typeloop[] = { TYPE_LNG, TYPE_DBL, TYPE_INT, TYPE_FLT, TYPE_ADR };
+ int flags, regoff;
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ int intregsneeded;
+#endif
+
+ /* get required compiler data */
+
+ m = jd->m;
+ cd = jd->cd;
+ rd = jd->rd;
+
+ /* rd->memuse was already set in stack.c to allocate stack space
+ for passing arguments to called methods. */
- /* rd->memuse was already set in stack.c to allocate stack space for */
- /* passing arguments to called methods */
#if defined(__I386__)
if (checksync && (m->flags & ACC_SYNCHRONIZED)) {
/* reserve 0(%esp) for Monitorenter/exit Argument on i386 */
}
#endif
- for (s = 0; s < cd->maxstack; s++) {
+ if (jd->isleafmethod) {
+ /* Reserve argument register, which will be used for Locals acting */
+ /* as Parameters */
+ if (rd->argintreguse < m->parseddesc->argintreguse)
+ rd->argintreguse = m->parseddesc->argintreguse;
+ if (rd->argfltreguse < m->parseddesc->argfltreguse)
+ rd->argfltreguse = m->parseddesc->argfltreguse;
+#ifdef HAS_ADDRESS_REGISTER_FILE
+ if (rd->argadrreguse < m->parseddesc->argadrreguse)
+ rd->argadrreguse = m->parseddesc->argadrreguse;
+#endif
+ }
+
+ for (s = 0; s < jd->maxinterfaces; s++) {
intalloc = -1; fltalloc = -1;
- saved = (rd->interfaces[s][TYPE_INT].flags |
- rd->interfaces[s][TYPE_LNG].flags |
- rd->interfaces[s][TYPE_FLT].flags |
- rd->interfaces[s][TYPE_DBL].flags |
- rd->interfaces[s][TYPE_ADR].flags) & SAVEDVAR;
-
+
+ /* check if the interface at this stack depth must be a SAVEDVAR */
+
+ saved = 0;
+
+ for (tt = 0; tt <=4; tt++) {
+ if ((t = jd->interface_map[s * 5 + tt].flags) != UNUSED) {
+ saved |= t & SAVEDVAR;
+ }
+ }
+
+ /* allocate reg/mem for each type the interface is used as */
+
for (tt = 0; tt <= 4; tt++) {
t = typeloop[tt];
- v = &rd->interfaces[s][t];
- if (v->type >= 0) {
+ if (jd->interface_map[s * 5 + t].flags == UNUSED)
+ continue;
+
+ flags = saved;
+ regoff = -1; /* initialize to invalid value */
+
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
+ intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
+
#if defined(HAS_4BYTE_STACKSLOT)
- memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
+ memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
- if (!saved) {
+
+ if (!saved) {
#if defined(HAS_ADDRESS_REGISTER_FILE)
- if (IS_ADR_TYPE(t)) {
- if (!m->isleafmethod
- &&(rd->argadrreguse < ADR_ARG_CNT)) {
- v->regoff = rd->argadrregs[rd->argadrreguset++];
- } else if (rd->tmpadrreguse > 0) {
- v->regoff = rd->tmpadrregs[--rd->tmpadrreguse];
- } else if (rd->savadrreguse > 0) {
- v->regoff = rd->savadrregs[--rd->savadrreguse];
- } else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse++;
- }
- } else /* !IS_ADR_TYPE */
+ if (IS_ADR_TYPE(t)) {
+ if (!jd->isleafmethod && AVAIL_ARG_ADR) {
+ flags |= ARGREG;
+ TAKE_ARG_ADR(regoff);
+ }
+ else if (AVAIL_TMP_ADR) {
+ TAKE_TMP_ADR(regoff);
+ }
+ else if (AVAIL_SAV_ADR) {
+ flags |= SAVREG;
+ TAKE_SAV_ADR(regoff);
+ }
+ else {
+ flags |= INMEMORY;
+ regoff = rd->memuse++ * SIZE_OF_STACKSLOT;
+ }
+ }
+ else /* !IS_ADR_TYPE */
#endif /* defined(HAS_ADDRESS_REGISTER_FILE) */
- {
- if (IS_FLT_DBL_TYPE(t)) {
- if (fltalloc >= 0) {
- /* Reuse memory slot(s)/register(s) for shared interface slots */
- v->flags |= rd->interfaces[s][fltalloc].flags
- & INMEMORY;
- v->regoff = rd->interfaces[s][fltalloc].regoff;
- } else if (!m->isleafmethod
- && (rd->argfltreguse < FLT_ARG_CNT)) {
- v->regoff = rd->argfltregs[rd->argfltreguse++];
- } else if (rd->tmpfltreguse > 0) {
- v->regoff = rd->tmpfltregs[--rd->tmpfltreguse];
- } else if (rd->savfltreguse > 0) {
- v->regoff = rd->savfltregs[--rd->savfltreguse];
- } else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
- fltalloc = t;
- } else { /* !IS_FLT_DBL_TYPE(t) */
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- /*
- * for i386 put all longs in memory
- */
- if (IS_2_WORD_TYPE(t)) {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- } else
-#endif /* defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE...GISTERS) */
-/* #if !defined(HAS_4BYTE_STACKSLOT) */
- if (intalloc >= 0) {
- /* Reuse memory slot(s)/register(s) for shared interface slots */
- v->flags |=
- rd->interfaces[s][intalloc].flags
- & INMEMORY;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (!(v->flags & INMEMORY)
- && IS_2_WORD_TYPE(intalloc))
- v->regoff = GET_LOW_REG(
- rd->interfaces[s][intalloc].regoff);
- else
-#endif
- v->regoff =
- rd->interfaces[s][intalloc].regoff;
- } else
-/* #endif *//* !defined(HAS_4BYTE_STACKSLOT) */
- if (!m->isleafmethod &&
- (rd->argintreguse
- + intregsneeded < INT_ARG_CNT)) {
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff=PACK_REGS(
- rd->argintregs[rd->argintreguse],
- rd->argintregs[rd->argintreguse + 1]);
- else
-#endif
- v->regoff =
- rd->argintregs[rd->argintreguse];
- rd->argintreguse += intregsneeded + 1;
- }
- else if (rd->tmpintreguse > intregsneeded) {
- rd->tmpintreguse -= intregsneeded + 1;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff=PACK_REGS(
- rd->tmpintregs[rd->tmpintreguse],
- rd->tmpintregs[rd->tmpintreguse + 1]);
- else
+ {
+ if (IS_FLT_DBL_TYPE(t)) {
+ if (fltalloc >= 0) {
+ /* Reuse memory slot(s)/register(s) for shared interface slots */
+ flags |= jd->interface_map[fltalloc].flags & ~SAVEDVAR;
+ regoff = jd->interface_map[fltalloc].regoff;
+ }
+ else if (AVAIL_ARG_FLT) {
+ flags |= ARGREG;
+ TAKE_ARG_FLT(regoff);
+ }
+ else if (AVAIL_TMP_FLT) {
+ TAKE_TMP_FLT(regoff);
+ }
+ else if (AVAIL_SAV_FLT) {
+ flags |= SAVREG;
+ TAKE_SAV_FLT(regoff);
+ }
+ else {
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_FLT_DBL(regoff);
+ }
+ fltalloc = s * 5 + t;
+ }
+ else { /* !IS_FLT_DBL_TYPE(t) */
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ /*
+ * for i386 put all longs in memory
+ */
+ if (IS_2_WORD_TYPE(t)) {
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_INT_LNG(regoff);
+ }
+ else
#endif
- v->regoff =
- rd->tmpintregs[rd->tmpintreguse];
- }
- else if (rd->savintreguse > intregsneeded) {
- rd->savintreguse -= intregsneeded + 1;
- v->regoff =
- rd->savintregs[rd->savintreguse];
+ if (intalloc >= 0) {
+ /* Reuse memory slot(s)/register(s) for shared interface slots */
+ flags |= jd->interface_map[intalloc].flags & ~SAVEDVAR;
+ regoff = jd->interface_map[intalloc].regoff;
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff=PACK_REGS(
- rd->savintregs[rd->savintreguse],
- rd->savintregs[rd->savintreguse + 1]);
- else
-#endif
- v->regoff =
- rd->savintregs[rd->savintreguse];
- }
- else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
-
- intalloc = t;
- } /* if (IS_FLT_DBL_TYPE(t)) */
- }
- } else { /* (saved) */
-/* now the same like above, but without a chance to take a temporary register */
-#ifdef HAS_ADDRESS_REGISTER_FILE
- if (IS_ADR_TYPE(t)) {
- if (rd->savadrreguse > 0) {
- v->regoff = rd->savadrregs[--rd->savadrreguse];
- }
- else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse++;
- }
- } else
+ /* reuse lower half */
+ if (!(flags & INMEMORY)
+ && IS_2_WORD_TYPE(intalloc % 5))
+ regoff = GET_LOW_REG(regoff);
#endif
- {
- if (IS_FLT_DBL_TYPE(t)) {
- if (fltalloc >= 0) {
- v->flags |= rd->interfaces[s][fltalloc].flags
- & INMEMORY;
- v->regoff = rd->interfaces[s][fltalloc].regoff;
- } else
- if (rd->savfltreguse > 0) {
- v->regoff = rd->savfltregs[--rd->savfltreguse];
+ }
+ else {
+ if (AVAIL_ARG_INT) {
+ flags |= ARGREG;
+ TAKE_ARG_INT(regoff);
+ }
+ else if (AVAIL_TMP_INT) {
+ TAKE_TMP_INT(regoff);
+ }
+ else if (AVAIL_SAV_INT) {
+ flags |= SAVREG;
+ TAKE_SAV_INT(regoff);
}
else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_INT_LNG(regoff);
}
- fltalloc = t;
- }
- else { /* IS_INT_LNG */
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- /*
- * for i386 put all longs in memory
- */
- if (IS_2_WORD_TYPE(t)) {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- } else
+ }
+
+ intalloc = s * 5 + t;
+ } /* if (IS_FLT_DBL_TYPE(t)) */
+ }
+ }
+ else { /* (saved) */
+ /* now the same like above, but without a chance to take a temporary register */
+#ifdef HAS_ADDRESS_REGISTER_FILE
+ if (IS_ADR_TYPE(t)) {
+ if (AVAIL_SAV_ADR) {
+ TAKE_SAV_ADR(regoff);
+ }
+ else {
+ flags |= INMEMORY;
+ regoff = rd->memuse++ * SIZE_OF_STACKSLOT;
+ }
+ }
+ else
#endif
- {
-/* #if !defined(HAS_4BYTE_STACKSLOT) */
- if (intalloc >= 0) {
- v->flags |=
- rd->interfaces[s][intalloc].flags & INMEMORY;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (!(v->flags & INMEMORY)
- && IS_2_WORD_TYPE(intalloc))
- v->regoff =
- GET_LOW_REG(
- rd->interfaces[s][intalloc].regoff);
- else
+ {
+ if (IS_FLT_DBL_TYPE(t)) {
+ if (fltalloc >= 0) {
+ flags |= jd->interface_map[fltalloc].flags & ~SAVEDVAR;
+ regoff = jd->interface_map[fltalloc].regoff;
+ }
+ else {
+ if (AVAIL_SAV_FLT) {
+ TAKE_SAV_FLT(regoff);
+ }
+ else {
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_FLT_DBL(regoff);
+ }
+ }
+ fltalloc = s * 5 + t;
+ }
+ else { /* IS_INT_LNG */
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ /*
+ * for i386 put all longs in memory
+ */
+ if (IS_2_WORD_TYPE(t)) {
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_INT_LNG(regoff);
+ }
+ else
#endif
- v->regoff =
- rd->interfaces[s][intalloc].regoff;
- } else
-/* #endif */
- {
- if (rd->savintreguse > intregsneeded) {
- rd->savintreguse -= intregsneeded + 1;
+ {
+ if (intalloc >= 0) {
+ flags |= jd->interface_map[intalloc].flags & ~SAVEDVAR;
+ regoff = jd->interface_map[intalloc].regoff;
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff = PACK_REGS(
- rd->savintregs[rd->savintreguse],
- rd->savintregs[rd->savintreguse + 1]);
- else
+ /* reuse lower half */
+ if (!(flags & INMEMORY)
+ && IS_2_WORD_TYPE(intalloc % 5))
+ regoff = GET_LOW_REG(regoff);
#endif
- v->regoff =
- rd->savintregs[rd->savintreguse];
- } else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
+ }
+ else {
+ if (AVAIL_SAV_INT) {
+ TAKE_SAV_INT(regoff);
+ }
+ else {
+ flags |= INMEMORY;
+ NEW_MEM_SLOT_INT_LNG(regoff);
}
- intalloc = t;
}
- } /* if (IS_FLT_DBL_TYPE(t) else */
- } /* if (IS_ADR_TYPE(t)) else */
- } /* if (saved) else */
- } /* if (type >= 0) */
+ intalloc = s*5 + t;
+ }
+ } /* if (IS_FLT_DBL_TYPE(t) else */
+ } /* if (IS_ADR_TYPE(t)) else */
+ } /* if (saved) else */
+ /* if (type >= 0) */
+
+ assert(regoff >= 0);
+ jd->interface_map[5*s + t].flags = flags | INOUT;
+ jd->interface_map[5*s + t].regoff = regoff;
} /* for t */
} /* for s */
}
+/* simplereg_allocate_locals_leafmethod ****************************************
-/* function local_regalloc *****************************************************
-
- allocates registers for all local variables
+ Allocates registers for all local variables of a leafmethod.
*******************************************************************************/
-static void local_regalloc(methodinfo *m, codegendata *cd, registerdata *rd)
+static void simplereg_allocate_locals_leafmethod(jitdata *jd)
{
- int p, s, t, tt;
+ methodinfo *m;
+ codegendata *cd;
+ registerdata *rd;
+ methoddesc *md;
+
+ int p, s, t, tt, varindex;
int intalloc, fltalloc;
varinfo *v;
int intregsneeded = 0;
int aargcnt;
#endif
- if (m->isleafmethod) {
- methoddesc *md = m->parseddesc;
+ /* get required compiler data */
- iargcnt = md->argintreguse;
- fargcnt = md->argfltreguse;
+ m = jd->m;
+ cd = jd->cd;
+ rd = jd->rd;
+
+ md = m->parseddesc;
+
+ iargcnt = rd->argintreguse;
+ fargcnt = rd->argfltreguse;
#ifdef HAS_ADDRESS_REGISTER_FILE
- aargcnt = md->argadrreguse;
+ aargcnt = rd->argadrreguse;
#endif
- for (p = 0, s = 0; s < cd->maxlocals; s++, p++) {
- intalloc = -1; fltalloc = -1;
- for (tt = 0; tt <= 4; tt++) {
- t = typeloop[tt];
- v = &rd->locals[s][t];
+ for (p = 0, s = 0; s < jd->maxlocals; s++, p++) {
+ intalloc = -1; fltalloc = -1;
+ for (tt = 0; tt <= 4; tt++) {
+ t = typeloop[tt];
+ varindex = jd->local_map[s * 5 + t];
+ if (varindex == UNUSED)
+ continue;
- if (v->type < 0)
- continue;
+ v = VAR(varindex);
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
+ intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
#if defined(HAS_4BYTE_STACKSLOT)
- memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
+ memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
- /*
- * The order of
- *
- * #ifdef HAS_ADDRESS_REGISTER_FILE
- * if (IS_ADR_TYPE) {
- * ...
- * } else
- * #endif
- * if (IS_FLT_DBL) {
- * ...
- * } else { / int & lng
- * ...
- * }
- *
- * must not to be changed!
- */
+ /*
+ * The order of
+ *
+ * #ifdef HAS_ADDRESS_REGISTER_FILE
+ * if (IS_ADR_TYPE) {
+ * ...
+ * } else
+ * #endif
+ * if (IS_FLT_DBL) {
+ * ...
+ * } else { / int & lng
+ * ...
+ * }
+ *
+ * must not to be changed!
+ */
#ifdef HAS_ADDRESS_REGISTER_FILE
- if (IS_ADR_TYPE(t)) {
- if ((p < md->paramcount) && !md->params[p].inmemory) {
- v->flags = 0;
- v->regoff = rd->argadrregs[md->params[p].regoff];
+ if (IS_ADR_TYPE(t)) {
+ if ((p < md->paramcount) && !md->params[p].inmemory) {
+ v->flags = 0;
+ v->vv.regoff = rd->argadrregs[md->params[p].regoff];
+ }
+ else if (AVAIL_TMP_ADR) {
+ v->flags = 0;
+ TAKE_TMP_ADR(v->vv.regoff);
+ }
+ /* use unused argument registers as local registers */
+ else if ((p >= md->paramcount) &&
+ (aargcnt < ADR_ARG_CNT))
+ {
+ v->flags = 0;
+ POP_FRONT(rd->argadrregs, aargcnt, v->vv.regoff);
+ }
+ else if (AVAIL_SAV_ADR) {
+ v->flags = 0;
+ TAKE_SAV_ADR(v->vv.regoff);
+ }
+ else {
+ v->flags |= INMEMORY;
+ v->vv.regoff = rd->memuse++ * SIZE_OF_STACKSLOT;
+ }
+ }
+ else {
+#endif
+ if (IS_FLT_DBL_TYPE(t)) {
+ if (fltalloc >= 0) {
+ v->flags = VAR(fltalloc)->flags;
+ v->vv.regoff = VAR(fltalloc)->vv.regoff;
}
- if (rd->tmpadrreguse > 0) {
+#if !defined(SUPPORT_PASS_FLOATARGS_IN_INTREGS)
+ /* We can only use float arguments as local variables,
+ * if we do not pass them in integer registers. */
+ else if ((p < md->paramcount) && !md->params[p].inmemory) {
v->flags = 0;
- v->regoff = rd->tmpadrregs[--rd->tmpadrreguse];
+ v->vv.regoff = md->params[p].regoff;
}
- else if (rd->savadrreguse > 0) {
+#endif
+ else if (AVAIL_TMP_FLT) {
v->flags = 0;
- v->regoff = rd->savadrregs[--rd->savadrreguse];
+ TAKE_TMP_FLT(v->vv.regoff);
}
/* use unused argument registers as local registers */
- else if ((p >= md->paramcount) &&
- (aargcnt < ADR_ARG_CNT)) {
+ else if ((p >= md->paramcount) && (fargcnt < FLT_ARG_CNT)) {
+ v->flags = 0;
+ POP_FRONT(abi_registers_float_argument,
+ fargcnt, v->vv.regoff);
+ }
+ else if (AVAIL_SAV_FLT) {
v->flags = 0;
- v->regoff = rd->argadrregs[aargcnt++];
+ TAKE_SAV_FLT(v->vv.regoff);
}
else {
- v->flags |= INMEMORY;
- v->regoff = rd->memuse++;
- }
- } else {
+ v->flags = INMEMORY;
+ NEW_MEM_SLOT_FLT_DBL(v->vv.regoff);
+ }
+ fltalloc = jd->local_map[s * 5 + t];
+
+ }
+ else {
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ /*
+ * for i386 put all longs in memory
+ */
+ if (IS_2_WORD_TYPE(t)) {
+ v->flags = INMEMORY;
+ NEW_MEM_SLOT_INT_LNG(v->vv.regoff);
+ }
+ else
#endif
- if (IS_FLT_DBL_TYPE(t)) {
- if (fltalloc >= 0) {
- v->flags = rd->locals[s][fltalloc].flags;
- v->regoff = rd->locals[s][fltalloc].regoff;
+ {
+ if (intalloc >= 0) {
+ v->flags = VAR(intalloc)->flags;
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ if (!(v->flags & INMEMORY)
+ && IS_2_WORD_TYPE(VAR(intalloc)->type))
+ v->vv.regoff = GET_LOW_REG(
+ VAR(intalloc)->vv.regoff);
+ else
+#endif
+ v->vv.regoff = VAR(intalloc)->vv.regoff;
}
-#if !defined(SUPPORT_PASS_FLOATARGS_IN_INTREGS)
- /* We can only use float arguments as local variables,
- * if we do not pass them in integer registers. */
- else if ((p < md->paramcount) &&
- !md->params[p].inmemory) {
+ else if ((p < md->paramcount) &&
+ !md->params[p].inmemory)
+ {
v->flags = 0;
- v->regoff = rd->argfltregs[md->params[p].regoff];
- }
+#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ if (IS_2_WORD_TYPE(t))
+ v->vv.regoff =
+ PACK_REGS(GET_LOW_REG(md->params[p].regoff),
+ GET_HIGH_REG(md->params[p].regoff));
+ else
#endif
- else if (rd->tmpfltreguse > 0) {
+ v->vv.regoff = md->params[p].regoff;
+ }
+ else if (AVAIL_TMP_INT) {
v->flags = 0;
- v->regoff = rd->tmpfltregs[--rd->tmpfltreguse];
+ TAKE_TMP_INT(v->vv.regoff);
}
- else if (rd->savfltreguse > 0) {
+ /*
+ * use unused argument registers as local registers
+ */
+ else if ((p >= m->parseddesc->paramcount) &&
+ (iargcnt + intregsneeded < INT_ARG_CNT))
+ {
v->flags = 0;
- v->regoff = rd->savfltregs[--rd->savfltreguse];
+ POP_FRONT_INT(abi_registers_integer_argument,
+ iargcnt, v->vv.regoff);
}
- /* use unused argument registers as local registers */
- else if ((p >= m->paramcount) &&
- (fargcnt < FLT_ARG_CNT)) {
+ else if (AVAIL_SAV_INT) {
v->flags = 0;
- v->regoff = rd->argfltregs[fargcnt];
- fargcnt++;
+ TAKE_SAV_INT(v->vv.regoff);
}
else {
v->flags = INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
- fltalloc = t;
-
- } else {
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- /*
- * for i386 put all longs in memory
- */
- if (IS_2_WORD_TYPE(t)) {
- v->flags = INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- } else
-#endif
- {
- if (intalloc >= 0) {
- v->flags = rd->locals[s][intalloc].flags;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (!(v->flags & INMEMORY)
- && IS_2_WORD_TYPE(intalloc))
- v->regoff = GET_LOW_REG(
- rd->locals[s][intalloc].regoff);
- else
-#endif
- v->regoff = rd->locals[s][intalloc].regoff;
- }
- else if ((p < md->paramcount) &&
- !md->params[p].inmemory) {
- v->flags = 0;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (IS_2_WORD_TYPE(t))
-/* For ARM: - if GET_LOW_REG(md->params[p].regoff) == R4, prevent here that */
-/* rd->argintregs[GET_HIGH_REG(md->...)) is used! */
- v->regoff = PACK_REGS(
- rd->argintregs[GET_LOW_REG(md->params[p].regoff)],
- rd->argintregs[GET_HIGH_REG(md->params[p].regoff)]);
- else
-#endif
- v->regoff =
- rd->argintregs[md->params[p].regoff];
- }
- else if (rd->tmpintreguse > intregsneeded) {
- rd->tmpintreguse -= intregsneeded + 1;
- v->flags = 0;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff = PACK_REGS(
- rd->tmpintregs[rd->tmpintreguse],
- rd->tmpintregs[rd->tmpintreguse + 1]);
- else
-#endif
- v->regoff =
- rd->tmpintregs[rd->tmpintreguse];
- }
- else if (rd->savintreguse > intregsneeded) {
- rd->savintreguse -= intregsneeded + 1;
- v->flags = 0;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff = PACK_REGS(
- rd->savintregs[rd->savintreguse],
- rd->savintregs[rd->savintreguse + 1]);
- else
-#endif
- v->regoff =rd->savintregs[rd->savintreguse];
- }
- /*
- * use unused argument registers as local registers
- */
- else if ((p >= m->paramcount) &&
- (iargcnt < INT_ARG_CNT)) {
- v->flags = 0;
- v->regoff = rd->argintregs[iargcnt];
- iargcnt++;
- }
- else {
- v->flags = INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
+ NEW_MEM_SLOT_INT_LNG(v->vv.regoff);
}
- intalloc = t;
}
-#ifdef HAS_ADDRESS_REGISTER_FILE
+ intalloc = jd->local_map[s * 5 + t];
}
+#ifdef HAS_ADDRESS_REGISTER_FILE
+ }
#endif
- } /* for (tt=0;...) */
+ } /* for (tt=0;...) */
- /* If the current parameter is a 2-word type, the next local slot */
- /* is skipped. */
+ /* If the current parameter is a 2-word type, the next local slot */
+ /* is skipped. */
- if (p < md->paramcount)
- if (IS_2_WORD_TYPE(md->paramtypes[p].type))
- s++;
- }
+ if (p < md->paramcount)
+ if (IS_2_WORD_TYPE(md->paramtypes[p].type))
+ s++;
+ }
+}
+
+/* simplereg_allocate_locals ***************************************************
+
+ Allocates registers for all local variables.
+
+*******************************************************************************/
+
+static void simplereg_allocate_locals(jitdata *jd)
+{
+ codegendata *cd;
+ registerdata *rd;
+
+ int s, t, tt, varindex;
+ int intalloc, fltalloc;
+ varinfo *v;
+ int memneeded = 0;
+ int typeloop[] = { TYPE_LNG, TYPE_DBL, TYPE_INT, TYPE_FLT, TYPE_ADR };
+#ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
+ s4 intregsneeded;
+#endif
+
+ /* get required compiler data */
+
+ cd = jd->cd;
+ rd = jd->rd;
+
+ if (jd->isleafmethod) {
+ simplereg_allocate_locals_leafmethod(jd);
return;
}
- for (s = 0; s < cd->maxlocals; s++) {
+ for (s = 0; s < jd->maxlocals; s++) {
intalloc = -1; fltalloc = -1;
for (tt=0; tt<=4; tt++) {
t = typeloop[tt];
- v = &rd->locals[s][t];
- if (v->type >= 0) {
+ varindex = jd->local_map[s * 5 + t];
+ if (varindex == UNUSED)
+ continue;
+
+ v = VAR(varindex);
+
#ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
intregsneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
+
#if defined(HAS_4BYTE_STACKSLOT)
memneeded = (IS_2_WORD_TYPE(t)) ? 1 : 0;
#endif
+
#ifdef HAS_ADDRESS_REGISTER_FILE
- if ( IS_ADR_TYPE(t) ) {
- if (rd->savadrreguse > 0) {
+ if (IS_ADR_TYPE(t)) {
+ if (AVAIL_SAV_ADR) {
v->flags = 0;
- v->regoff = rd->savadrregs[--rd->savadrreguse];
+ TAKE_SAV_ADR(v->vv.regoff);
}
else {
v->flags = INMEMORY;
- v->regoff = rd->memuse++;
+ v->vv.regoff = rd->memuse++ * SIZE_OF_STACKSLOT;
}
- } else {
+ }
+ else {
#endif
if (IS_FLT_DBL_TYPE(t)) {
if (fltalloc >= 0) {
- v->flags = rd->locals[s][fltalloc].flags;
- v->regoff = rd->locals[s][fltalloc].regoff;
+ v->flags = VAR(fltalloc)->flags;
+ v->vv.regoff = VAR(fltalloc)->vv.regoff;
}
- else if (rd->savfltreguse > 0) {
+ else if (AVAIL_SAV_FLT) {
v->flags = 0;
- v->regoff = rd->savfltregs[--rd->savfltreguse];
+ TAKE_SAV_FLT(v->vv.regoff);
}
else {
v->flags = INMEMORY;
- /* Align doubles in Memory */
- if ( (memneeded) && (rd->memuse & 1))
- rd->memuse++;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
+ NEW_MEM_SLOT_FLT_DBL(v->vv.regoff);
}
- fltalloc = t;
+ fltalloc = jd->local_map[s * 5 + t];
}
else {
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
/*
* for i386 put all longs in memory
*/
if (IS_2_WORD_TYPE(t)) {
v->flags = INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- } else {
+ NEW_MEM_SLOT_INT_LNG(v->vv.regoff);
+ }
+ else {
#endif
if (intalloc >= 0) {
- v->flags = rd->locals[s][intalloc].flags;
+ v->flags = VAR(intalloc)->flags;
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
if (!(v->flags & INMEMORY)
- && IS_2_WORD_TYPE(intalloc))
- v->regoff = GET_LOW_REG(
- rd->locals[s][intalloc].regoff);
+ && IS_2_WORD_TYPE(VAR(intalloc)->type))
+ v->vv.regoff = GET_LOW_REG(
+ VAR(intalloc)->vv.regoff);
else
#endif
- v->regoff = rd->locals[s][intalloc].regoff;
+ v->vv.regoff = VAR(intalloc)->vv.regoff;
}
- else if (rd->savintreguse > intregsneeded) {
- rd->savintreguse -= intregsneeded+1;
+ else if (AVAIL_SAV_INT) {
v->flags = 0;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- v->regoff = PACK_REGS(
- rd->savintregs[rd->savintreguse],
- rd->savintregs[rd->savintreguse + 1]);
- else
-#endif
- v->regoff =rd->savintregs[rd->savintreguse];
+ TAKE_SAV_INT(v->vv.regoff);
}
else {
v->flags = INMEMORY;
- v->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
+ NEW_MEM_SLOT_INT_LNG(v->vv.regoff);
}
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
}
#endif
- intalloc = t;
+ intalloc = jd->local_map[s * 5 + t];
}
#ifdef HAS_ADDRESS_REGISTER_FILE
}
#endif
-
- }
}
}
}
-static void reg_init_temp(methodinfo *m, registerdata *rd)
+
+static void simplereg_init(jitdata *jd, registerdata *rd)
{
+ int i;
+
rd->freememtop = 0;
#if defined(HAS_4BYTE_STACKSLOT)
rd->freememtop_2 = 0;
rd->freeargadrtop = 0;
#endif
- if (m->isleafmethod) {
- /* Don't use not used Argument Registers in Leafmethods -> they could */
- /* already be in use for Locals passed as parameter to this Method */
- rd->argintreguse = INT_ARG_CNT;
- rd->argfltreguse = FLT_ARG_CNT;
+ rd->regisoutvar = DMNEW(int, TOTAL_REG_CNT);
+ rd->regcopycount = DMNEW(int, TOTAL_REG_CNT);
+ MZERO(rd->regcopycount, int, TOTAL_REG_CNT);
+
+ /* memcopycount is dynamically allocated when needed */
+
+ rd->memcopycount = NULL;
+ rd->memcopycountsize = 0;
+
+ rd->intusedinout = DMNEW(int, INT_REG_CNT);
+ MZERO(rd->intusedinout, int, INT_REG_CNT);
+ rd->fltusedinout = DMNEW(int, FLT_REG_CNT);
+ MZERO(rd->fltusedinout, int, FLT_REG_CNT);
+
+ /* record the interface registers as used */
+
+ for (i=0; i<rd->argintreguse; ++i)
+ rd->intusedinout[abi_registers_integer_argument[i]] = 1;
+ for (i=rd->tmpintreguse; i<INT_TMP_CNT; ++i)
+ rd->intusedinout[rd->tmpintregs[i]] = 1;
+ for (i=rd->savintreguse; i<INT_SAV_CNT; ++i)
+ rd->intusedinout[rd->savintregs[i]] = 1;
+
+ for (i=0; i<rd->argfltreguse; ++i)
+ rd->fltusedinout[abi_registers_float_argument[i]] = 1;
+ for (i=rd->tmpfltreguse; i<FLT_TMP_CNT; ++i)
+ rd->fltusedinout[rd->tmpfltregs[i]] = 1;
+ for (i=rd->savfltreguse; i<FLT_SAV_CNT; ++i)
+ rd->fltusedinout[rd->savfltregs[i]] = 1;
+
#ifdef HAS_ADDRESS_REGISTER_FILE
- rd->argadrreguse = ADR_ARG_CNT;
+ rd->adrusedinout = DMNEW(int, ADR_REG_CNT);
+ MZERO(rd->adrusedinout, int, ADR_REG_CNT);
+
+ for (i=0; i<rd->argadrreguse; ++i)
+ rd->adrusedinout[rd->argadrregs[i]] = 1;
+ for (i=rd->tmpadrreguse; i<ADR_TMP_CNT; ++i)
+ rd->adrusedinout[rd->tmpadrregs[i]] = 1;
+ for (i=rd->savadrreguse; i<ADR_SAV_CNT; ++i)
+ rd->adrusedinout[rd->savadrregs[i]] = 1;
#endif
- }
}
-#define reg_new_temp(rd,s) if (s->varkind == TEMPVAR) reg_new_temp_func(rd, s)
+static void simplereg_init_block(registerdata *rd)
+{
+ int i;
+
+ /* remove all interface registers from the free lists */
+
+ for (i=0; i<rd->freearginttop; ++i)
+ if (rd->intusedinout[rd->freeargintregs[i]]) {
+ rd->freeargintregs[i--] = rd->freeargintregs[--rd->freearginttop];
+ }
+ for (i=0; i<rd->freetmpinttop; ++i)
+ if (rd->intusedinout[rd->freetmpintregs[i]]) {
+ rd->freetmpintregs[i--] = rd->freetmpintregs[--rd->freetmpinttop];
+ }
+ for (i=0; i<rd->freesavinttop; ++i)
+ if (rd->intusedinout[rd->freesavintregs[i]]) {
+ rd->freesavintregs[i--] = rd->freesavintregs[--rd->freesavinttop];
+ }
+
+ for (i=0; i<rd->freeargflttop; ++i)
+ if (rd->fltusedinout[rd->freeargfltregs[i]]) {
+ rd->freeargfltregs[i--] = rd->freeargfltregs[--rd->freeargflttop];
+ }
+ for (i=0; i<rd->freetmpflttop; ++i)
+ if (rd->fltusedinout[rd->freetmpfltregs[i]]) {
+ rd->freetmpfltregs[i--] = rd->freetmpfltregs[--rd->freetmpflttop];
+ }
+ for (i=0; i<rd->freesavflttop; ++i)
+ if (rd->fltusedinout[rd->freesavfltregs[i]]) {
+ rd->freesavfltregs[i--] = rd->freesavfltregs[--rd->freesavflttop];
+ }
+
+#ifdef HAS_ADDRESS_REGISTER_FILE
+ for (i=0; i<rd->freeargadrtop; ++i)
+ if (rd->adrusedinout[rd->freeargadrregs[i]]) {
+ rd->freeargadrregs[i--] = rd->freeargadrregs[--rd->freeargadrtop];
+ }
+ for (i=0; i<rd->freetmpadrtop; ++i)
+ if (rd->adrusedinout[rd->freetmpadrregs[i]]) {
+ rd->freetmpadrregs[i--] = rd->freetmpadrregs[--rd->freetmpadrtop];
+ }
+ for (i=0; i<rd->freesavadrtop; ++i)
+ if (rd->adrusedinout[rd->freesavadrregs[i]]) {
+ rd->freesavadrregs[i--] = rd->freesavadrregs[--rd->freesavadrtop];
+ }
+#endif
+}
-static void reg_new_temp_func(registerdata *rd, stackptr s)
+
+static void simplereg_new_temp(jitdata *jd, s4 index)
{
+#ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
s4 intregsneeded;
+#endif
s4 memneeded;
s4 tryagain;
+ registerdata *rd;
+ varinfo *v;
+
+ rd = jd->rd;
+ v = VAR(index);
+
+ /* assert that constants are not allocated */
+
+ assert(v->type != TYPE_RET);
/* Try to allocate a saved register if there is no temporary one */
/* available. This is what happens during the second run. */
- tryagain = (s->flags & SAVEDVAR) ? 1 : 2;
+ tryagain = (v->flags & SAVEDVAR) ? 1 : 2;
#ifdef SUPPORT_COMBINE_INTEGER_REGISTERS
- intregsneeded = (IS_2_WORD_TYPE(s->type)) ? 1 : 0;
-#else
- intregsneeded = 0;
+ intregsneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
#endif
+
#if defined(HAS_4BYTE_STACKSLOT)
- memneeded = (IS_2_WORD_TYPE(s->type)) ? 1 : 0;
+ memneeded = (IS_2_WORD_TYPE(v->type)) ? 1 : 0;
#else
memneeded = 0;
#endif
for(; tryagain; --tryagain) {
if (tryagain == 1) {
- if (!(s->flags & SAVEDVAR))
- s->flags |= SAVEDTMP;
+ if (!(v->flags & SAVEDVAR))
+ v->flags |= SAVREG;
#ifdef HAS_ADDRESS_REGISTER_FILE
- if (IS_ADR_TYPE(s->type)) {
- if (rd->freesavadrtop > 0) {
- s->regoff = rd->freesavadrregs[--rd->freesavadrtop];
+ if (IS_ADR_TYPE(v->type)) {
+ if (AVAIL_FREE_SAV_ADR) {
+ TAKE_FREE_SAV_ADR(v->vv.regoff);
return;
- } else if (rd->savadrreguse > 0) {
- s->regoff = rd->savadrregs[--rd->savadrreguse];
+ }
+ else if (AVAIL_SAV_ADR) {
+ TAKE_SAV_ADR(v->vv.regoff);
return;
}
- } else
+ }
+ else
#endif
{
- if (IS_FLT_DBL_TYPE(s->type)) {
- if (rd->freesavflttop > 0) {
- s->regoff = rd->freesavfltregs[--rd->freesavflttop];
+ if (IS_FLT_DBL_TYPE(v->type)) {
+ if (AVAIL_FREE_SAV_FLT) {
+ TAKE_FREE_SAV_FLT(v->vv.regoff);
return;
- } else if (rd->savfltreguse > 0) {
- s->regoff = rd->savfltregs[--rd->savfltreguse];
+ }
+ else if (AVAIL_SAV_FLT) {
+ TAKE_SAV_FLT(v->vv.regoff);
return;
}
- } else {
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ }
+ else {
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
/*
* for i386 put all longs in memory
*/
- if (!IS_2_WORD_TYPE(s->type))
+ if (!IS_2_WORD_TYPE(v->type))
#endif
{
- if (rd->freesavinttop > intregsneeded) {
- rd->freesavinttop -= intregsneeded + 1;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->freesavintregs[rd->freesavinttop],
- rd->freesavintregs[rd->freesavinttop + 1]);
- else
-#endif
- s->regoff =
- rd->freesavintregs[rd->freesavinttop];
+ if (AVAIL_FREE_SAV_INT) {
+ TAKE_FREE_SAV_INT(v->vv.regoff);
return;
- } else if (rd->savintreguse > intregsneeded) {
- rd->savintreguse -= intregsneeded + 1;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->savintregs[rd->savintreguse],
- rd->savintregs[rd->savintreguse + 1]);
- else
-#endif
- s->regoff = rd->savintregs[rd->savintreguse];
+ }
+ else if (AVAIL_SAV_INT) {
+ TAKE_SAV_INT(v->vv.regoff);
return;
}
}
}
}
- } else { /* tryagain == 2 */
+ }
+ else { /* tryagain == 2 */
#ifdef HAS_ADDRESS_REGISTER_FILE
- if (IS_ADR_TYPE(s->type)) {
- if (rd->freetmpadrtop > 0) {
- s->regoff = rd->freetmpadrregs[--rd->freetmpadrtop];
+ if (IS_ADR_TYPE(v->type)) {
+ if (AVAIL_FREE_TMP_ADR) {
+ TAKE_FREE_TMP_ADR(v->vv.regoff);
return;
- } else if (rd->tmpadrreguse > 0) {
- s->regoff = rd->tmpadrregs[--rd->tmpadrreguse];
+ }
+ else if (AVAIL_TMP_ADR) {
+ TAKE_TMP_ADR(v->vv.regoff);
return;
}
- } else
+ }
+ else
#endif
{
- if (IS_FLT_DBL_TYPE(s->type)) {
- if (rd->freeargflttop > 0) {
- s->regoff = rd->freeargfltregs[--rd->freeargflttop];
- s->flags |= TMPARG;
+ if (IS_FLT_DBL_TYPE(v->type)) {
+ if (AVAIL_FREE_ARG_FLT) {
+ v->flags |= ARGREG;
+ TAKE_FREE_ARG_FLT(v->vv.regoff);
return;
- } else if (rd->argfltreguse < FLT_ARG_CNT) {
- s->regoff = rd->argfltregs[rd->argfltreguse++];
- s->flags |= TMPARG;
+ }
+ else if (AVAIL_ARG_FLT) {
+ v->flags |= ARGREG;
+ TAKE_ARG_FLT(v->vv.regoff);
return;
- } else if (rd->freetmpflttop > 0) {
- s->regoff = rd->freetmpfltregs[--rd->freetmpflttop];
+ }
+ else if (AVAIL_FREE_TMP_FLT) {
+ TAKE_FREE_TMP_FLT(v->vv.regoff);
return;
- } else if (rd->tmpfltreguse > 0) {
- s->regoff = rd->tmpfltregs[--rd->tmpfltreguse];
+ }
+ else if (AVAIL_TMP_FLT) {
+ TAKE_TMP_FLT(v->vv.regoff);
return;
}
- } else {
-#if defined(HAS_4BYTE_STACKSLOT) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
+ }
+ else {
+#if (SIZEOF_VOID_P == 4) && !defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
/*
* for i386 put all longs in memory
*/
- if (!IS_2_WORD_TYPE(s->type))
+ if (!IS_2_WORD_TYPE(v->type))
#endif
{
- if (rd->freearginttop > intregsneeded) {
- rd->freearginttop -= intregsneeded + 1;
- s->flags |= TMPARG;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->freeargintregs[rd->freearginttop],
- rd->freeargintregs[rd->freearginttop + 1]);
- else
-#endif
- s->regoff =
- rd->freeargintregs[rd->freearginttop];
+ if (AVAIL_FREE_ARG_INT) {
+ v->flags |= ARGREG;
+ TAKE_FREE_ARG_INT(v->vv.regoff);
return;
- } else if (rd->argintreguse
- < INT_ARG_CNT - intregsneeded) {
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->argintregs[rd->argintreguse],
- rd->argintregs[rd->argintreguse + 1]);
- else
-#endif
- s->regoff = rd->argintregs[rd->argintreguse];
- s->flags |= TMPARG;
- rd->argintreguse += intregsneeded + 1;
+ }
+ else if (AVAIL_ARG_INT) {
+ v->flags |= ARGREG;
+ TAKE_ARG_INT(v->vv.regoff);
return;
- } else if (rd->freetmpinttop > intregsneeded) {
- rd->freetmpinttop -= intregsneeded + 1;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->freetmpintregs[rd->freetmpinttop],
- rd->freetmpintregs[rd->freetmpinttop + 1]);
- else
-#endif
- s->regoff = rd->freetmpintregs[rd->freetmpinttop];
+ }
+ else if (AVAIL_FREE_TMP_INT) {
+ TAKE_FREE_TMP_INT(v->vv.regoff);
return;
- } else if (rd->tmpintreguse > intregsneeded) {
- rd->tmpintreguse -= intregsneeded + 1;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded)
- s->regoff = PACK_REGS(
- rd->tmpintregs[rd->tmpintreguse],
- rd->tmpintregs[rd->tmpintreguse + 1]);
- else
-#endif
- s->regoff = rd->tmpintregs[rd->tmpintreguse];
+ }
+ else if (AVAIL_TMP_INT) {
+ TAKE_TMP_INT(v->vv.regoff);
return;
}
} /* if (!IS_2_WORD_TYPE(s->type)) */
} /* if (tryagain == 1) else */
} /* for(; tryagain; --tryagain) */
+ /* spill to memory */
+
+ v->flags |= INMEMORY;
+
#if defined(HAS_4BYTE_STACKSLOT)
- if ((memneeded == 1) && (rd->freememtop_2 > 0)) {
- rd->freememtop_2--;
- s->regoff = rd->freemem_2[rd->freememtop_2];
- } else
-#endif /*defined(HAS_4BYTE_STACKSLOT) */
- if ((memneeded == 0) && (rd->freememtop > 0)) {
- rd->freememtop--;;
- s->regoff = rd->freemem[rd->freememtop];
- } else {
-#if defined(HAS_4BYTE_STACKSLOT)
- /* align 2 Word Types */
- if ((memneeded) && ((rd->memuse & 1) == 1)) {
- /* Put patched memory slot on freemem */
- rd->freemem[rd->freememtop++] = rd->memuse;
- rd->memuse++;
- }
+ if ((memneeded == 1) && (rd->freememtop_2 > 0))
+ POP_BACK(rd->freemem_2, rd->freememtop_2, v->vv.regoff);
+ else
#endif /*defined(HAS_4BYTE_STACKSLOT) */
- s->regoff = rd->memuse;
- rd->memuse += memneeded + 1;
- }
- s->flags |= INMEMORY;
+ if ((memneeded == 0) && (rd->freememtop > 0))
+ POP_BACK(rd->freemem, rd->freememtop, v->vv.regoff);
+ else
+ NEW_MEM_SLOT_REUSE_PADDING(v->vv.regoff);
}
-#define reg_free_temp(rd,s) if (s->varkind == TEMPVAR) reg_free_temp_func(rd, s)
-
-static void reg_free_temp_func(registerdata *rd, stackptr s)
+static void simplereg_free(registerdata *rd, s4 flags, s4 regoff, s4 type)
{
- s4 intregsneeded;
- s4 memneeded;
+ /* assert that constants are not freed */
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- intregsneeded = (IS_2_WORD_TYPE(s->type)) ? 1 : 0;
-#else
- intregsneeded = 0;
-#endif
+ assert(type != TYPE_RET);
-#if defined(HAS_4BYTE_STACKSLOT)
- memneeded = (IS_2_WORD_TYPE(s->type)) ? 1 : 0;
-#else
- memneeded = 0;
-#endif
+ /* if this is a copy of another variable, just decrement the copy counter */
+
+ if (flags & INMEMORY) {
+ int32_t memindex;
- if (s->flags & INMEMORY) {
+ if (flags & INOUT)
+ return;
+
+ memindex = regoff / SIZE_OF_STACKSLOT;
+
+ if (memindex < rd->memcopycountsize && rd->memcopycount[memindex]) {
+ rd->memcopycount[memindex]--;
+ return;
+ }
+ }
+ else {
+ s4 regindex;
+
+ regindex = REG_INDEX(regoff, type);
+
+ /* do not free interface registers that are needed as outvars */
+
+ if (flags & INOUT) {
+ if (rd->regisoutvar[regindex]) {
+ LOG(("DONT FREE f=%02x r=%d t=%d\n", flags, regoff, type));
+ return;
+ }
+
+ LOG(("FREEING INVAR f=%02x r=%d t=%d\n", flags, regoff, type));
+ }
+
+ if (rd->regcopycount[regindex]) {
+ rd->regcopycount[regindex]--;
+ return;
+ }
+ }
+
+ if (flags & INMEMORY) {
#if defined(HAS_4BYTE_STACKSLOT)
- if (memneeded > 0) {
- rd->freemem_2[rd->freememtop_2] = s->regoff;
- rd->freememtop_2++;
- } else
+ if (IS_2_WORD_TYPE(type))
+ PUSH_BACK(rd->freemem_2, rd->freememtop_2, regoff);
+ else
#endif
- {
- rd->freemem[rd->freememtop] = s->regoff;
- rd->freememtop++;
- }
+ PUSH_BACK(rd->freemem, rd->freememtop, regoff);
+
+ return;
+ }
+
+ /* freeing a register */
#ifdef HAS_ADDRESS_REGISTER_FILE
- } else if (IS_ADR_TYPE(s->type)) {
- if (s->flags & (SAVEDVAR | SAVEDTMP)) {
- s->flags &= ~SAVEDTMP;
- rd->freesavadrregs[rd->freesavadrtop++] = s->regoff;
- } else
- rd->freetmpadrregs[rd->freetmpadrtop++] = s->regoff;
+ if (IS_ADR_TYPE(type)) {
+ if (flags & (SAVEDVAR | SAVREG))
+ PUSH_FREE_SAV_ADR(regoff);
+ else
+ PUSH_FREE_TMP_ADR(regoff);
+ }
#endif
- } else if (IS_FLT_DBL_TYPE(s->type)) {
- if (s->flags & (SAVEDVAR | SAVEDTMP)) {
- s->flags &= ~SAVEDTMP;
- rd->freesavfltregs[rd->freesavflttop++] = s->regoff;
- } else if (s->flags & TMPARG) {
- s->flags &= ~TMPARG;
- rd->freeargfltregs[rd->freeargflttop++] = s->regoff;
- } else
- rd->freetmpfltregs[rd->freetmpflttop++] = s->regoff;
- } else { /* IS_INT_LNG_TYPE */
- if (s->flags & (SAVEDVAR | SAVEDTMP)) {
- s->flags &= ~SAVEDTMP;
+ else if (IS_FLT_DBL_TYPE(type)) {
+ if (flags & (SAVEDVAR | SAVREG))
+ PUSH_FREE_SAV_FLT(regoff);
+ else if (flags & ARGREG)
+ PUSH_FREE_ARG_FLT(regoff);
+ else
+ PUSH_FREE_TMP_FLT(regoff);
+ }
+ else { /* IS_INT_LNG_TYPE */
#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded) {
- rd->freesavintregs[rd->freesavinttop] =
- GET_LOW_REG(s->regoff);
- rd->freesavintregs[rd->freesavinttop + 1] =
- GET_HIGH_REG(s->regoff);
- } else
+ s4 intregsneeded = (IS_2_WORD_TYPE(type)) ? 1 : 0;
#endif
- rd->freesavintregs[rd->freesavinttop] = s->regoff;
- rd->freesavinttop += intregsneeded + 1;
- } else if (s->flags & TMPARG) {
- s->flags &= ~TMPARG;
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded) {
- rd->freeargintregs[rd->freearginttop] =
- GET_LOW_REG(s->regoff);
- rd->freeargintregs[rd->freearginttop + 1] =
- GET_HIGH_REG(s->regoff);
- } else
-#endif
- rd->freeargintregs[rd->freearginttop] = s->regoff;
- rd->freearginttop += intregsneeded + 1;
- } else {
-#if defined(SUPPORT_COMBINE_INTEGER_REGISTERS)
- if (intregsneeded) {
- rd->freetmpintregs[rd->freetmpinttop] =
- GET_LOW_REG(s->regoff);
- rd->freetmpintregs[rd->freetmpinttop + 1] =
- GET_HIGH_REG(s->regoff);
- } else
-#endif
- rd->freetmpintregs[rd->freetmpinttop] = s->regoff;
- rd->freetmpinttop += intregsneeded + 1;
- }
+ if (flags & (SAVEDVAR | SAVREG))
+ PUSH_FREE_SAV_INT(regoff);
+ else if (flags & ARGREG)
+ PUSH_FREE_ARG_INT(regoff);
+ else
+ PUSH_FREE_TMP_INT(regoff);
}
}
+static inline void simplereg_free_temp(jitdata *jd, s4 index)
+{
+ varinfo *v;
+
+ v = VAR(index);
+
+ simplereg_free(jd->rd, v->flags, v->vv.regoff, v->type);
+}
+
-static void allocate_scratch_registers(methodinfo *m, registerdata *rd)
+static bool simplereg_alloc_dup(jitdata *jd, s4 srcindex, s4 dstindex)
{
- s4 opcode;
+ varinfo *sv;
+ varinfo *dv;
+
+ /* do not coalesce local variables here */
+
+ if (srcindex <= jd->localcount || dstindex <= jd->localcount)
+ return false;
+
+ sv = VAR(srcindex);
+ dv = VAR(dstindex);
+
+ /* do not coalesce in/out vars or preallocated variables here */
+
+ if ((sv->flags | dv->flags) & (INOUT | PREALLOC))
+ return false;
+
+ /* if the source is in memory, we can coalesce in any case */
+
+ if (sv->flags & INMEMORY) {
+ dv->flags |= INMEMORY;
+ dv->vv.regoff = sv->vv.regoff;
+ return true;
+ }
+
+ /* we do not allocate a REG_TMP to a REG_SAV variable */
+
+ if ((sv->flags & SAVEDVAR) != (dv->flags & SAVEDVAR))
+ return false;
+
+ /* coalesce */
+ dv->vv.regoff = sv->vv.regoff;
+ dv->flags |= sv->flags & (SAVREG | ARGREG);
+
+ return true;
+}
+
+
+/* simplereg_allocate_temporaries **********************************************
+
+ Allocate temporary (non-interface, non-local) registers.
+
+*******************************************************************************/
+
+static void simplereg_allocate_temporaries(jitdata *jd)
+{
+ methodinfo *m;
+ registerdata *rd;
s4 i;
s4 len;
- stackptr src;
- stackptr dst;
instruction *iptr;
basicblock *bptr;
- methodinfo *lm;
builtintable_entry *bte;
methoddesc *md;
+ s4 *argp;
+ varinfo *v;
+ s4 flags;
+ s4 regoff;
+ s4 type;
+ s4 regindex;
+
+ /* get required compiler data */
+
+ m = jd->m;
+ rd = jd->rd;
/* initialize temp registers */
- reg_init_temp(m, rd);
- bptr = m->basicblocks;
+ simplereg_init(jd, rd);
+
+ bptr = jd->basicblocks;
while (bptr != NULL) {
if (bptr->flags >= BBREACHED) {
- dst = bptr->instack;
+ LOG(("\nallocating block L%03d\n", bptr->nr));
+
+ simplereg_init_block(rd);
+
+ /* assert that all copy counts are zero */
+
+#if !defined(NDEBUG)
+ for (i=0; i < TOTAL_REG_CNT; ++i)
+ assert(rd->regcopycount[i] == 0);
+#endif
+
+ /* reset outvar flags */
+
+ MZERO(rd->regisoutvar, int, TOTAL_REG_CNT);
+
+ /* set allocation of invars */
+
+ for (i=0; i<bptr->indepth; ++i)
+ {
+ v = VAR(bptr->invars[i]);
+ if (v->type == TYPE_RET)
+ continue;
+
+ v->vv.regoff = jd->interface_map[5*i + v->type].regoff;
+ v->flags = jd->interface_map[5*i + v->type].flags;
+
+ if (!(v->flags & INMEMORY))
+ rd->regcopycount[REG_INDEX(v->vv.regoff, v->type)] = 1;
+ }
+
+ /* set allocation of outvars */
+
+ for (i=0; i<bptr->outdepth; ++i)
+ {
+ v = VAR(bptr->outvars[i]);
+ if (v->type == TYPE_RET)
+ continue;
+
+ v->vv.regoff = jd->interface_map[5*i + v->type].regoff;
+ v->flags = jd->interface_map[5*i + v->type].flags;
+
+ if (!(v->flags & INMEMORY)) {
+ regindex = REG_INDEX(v->vv.regoff, v->type);
+ rd->regcopycount[regindex] = 1;
+ rd->regisoutvar[regindex] = 1;
+ }
+ }
+
+ /* free interface registers not used in this block */
+
+ for (i=0; i < 5 * jd->maxinterfaces; ++i) {
+ type = i%5;
+ regoff = jd->interface_map[i].regoff;
+ flags = jd->interface_map[i].flags;
+
+ if (!(flags & INMEMORY)) {
+ if (!rd->regcopycount[REG_INDEX(regoff, type)]) {
+ LOG(("MAY REUSE interface register f=%02x r=%d t=%d\n",
+ flags, regoff, type));
+ simplereg_free(rd, flags, regoff, type);
+
+ /* mark it, so it is not freed again */
+ rd->regcopycount[REG_INDEX(regoff, type)] = -1;
+ }
+ }
+ }
+
+ /* reset copy counts */
+
+ MZERO(rd->regcopycount, int, TOTAL_REG_CNT);
+
+ /* iterate over ICMDS to allocate temporary variables */
iptr = bptr->iinstr;
len = bptr->icount;
while (--len >= 0) {
- src = dst;
- dst = iptr->dst;
- opcode = iptr->opc;
- switch (opcode) {
+ switch (iptr->opc) {
/* pop 0 push 0 */
+ case ICMD_JSR:
case ICMD_NOP:
- case ICMD_ELSE_ICONST:
case ICMD_CHECKNULL:
case ICMD_IINC:
- case ICMD_JSR:
case ICMD_RET:
case ICMD_RETURN:
case ICMD_GOTO:
case ICMD_PUTSTATICCONST:
case ICMD_INLINE_START:
case ICMD_INLINE_END:
+ case ICMD_INLINE_BODY:
break;
/* pop 0 push 1 const */
case ICMD_FLOAD:
case ICMD_DLOAD:
case ICMD_ALOAD:
- reg_new_temp(rd, dst);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
/* pop 2 push 1 */
case ICMD_BALOAD:
case ICMD_CALOAD:
case ICMD_SALOAD:
- reg_free_temp(rd, src);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst);
+ FREE_TEMP_REG(iptr->sx.s23.s2.varindex);
+ FREE_TEMP_REG(iptr->s1.varindex);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
/* pop 3 push 0 */
case ICMD_BASTORE:
case ICMD_CASTORE:
case ICMD_SASTORE:
- reg_free_temp(rd, src);
- reg_free_temp(rd, src->prev);
- reg_free_temp(rd, src->prev->prev);
+ FREE_TEMP_REG(iptr->sx.s23.s3.varindex);
+ FREE_TEMP_REG(iptr->sx.s23.s2.varindex);
+ FREE_TEMP_REG(iptr->s1.varindex);
break;
/* pop 1 push 0 store */
case ICMD_MONITORENTER:
case ICMD_MONITOREXIT:
- reg_free_temp(rd, src);
+ FREE_TEMP_REG(iptr->s1.varindex);
break;
/* pop 2 push 0 branch */
case ICMD_IF_LCMPGT:
case ICMD_IF_LCMPLE:
+ case ICMD_IF_FCMPEQ:
+ case ICMD_IF_FCMPNE:
+
+ case ICMD_IF_FCMPL_LT:
+ case ICMD_IF_FCMPL_GE:
+ case ICMD_IF_FCMPL_GT:
+ case ICMD_IF_FCMPL_LE:
+
+ case ICMD_IF_FCMPG_LT:
+ case ICMD_IF_FCMPG_GE:
+ case ICMD_IF_FCMPG_GT:
+ case ICMD_IF_FCMPG_LE:
+
+ case ICMD_IF_DCMPEQ:
+ case ICMD_IF_DCMPNE:
+
+ case ICMD_IF_DCMPL_LT:
+ case ICMD_IF_DCMPL_GE:
+ case ICMD_IF_DCMPL_GT:
+ case ICMD_IF_DCMPL_LE:
+
+ case ICMD_IF_DCMPG_LT:
+ case ICMD_IF_DCMPG_GE:
+ case ICMD_IF_DCMPG_GT:
+ case ICMD_IF_DCMPG_LE:
+
case ICMD_IF_ACMPEQ:
case ICMD_IF_ACMPNE:
case ICMD_BASTORECONST:
case ICMD_CASTORECONST:
case ICMD_SASTORECONST:
- reg_free_temp(rd, src);
- reg_free_temp(rd, src->prev);
+ FREE_TEMP_REG(iptr->sx.s23.s2.varindex);
+ FREE_TEMP_REG(iptr->s1.varindex);
break;
- /* pop 0 push 1 dup */
+ /* pop 0 push 1 copy */
- case ICMD_DUP:
- reg_new_temp(rd, dst);
- break;
-
- /* pop 0 push 2 dup */
-
- case ICMD_DUP2:
- reg_new_temp(rd, dst->prev);
- reg_new_temp(rd, dst);
- break;
+ case ICMD_COPY:
+ /* src === dst->prev (identical Stackslot Element) */
+ /* src --> dst (copied value, take same reg/mem) */
- /* pop 2 push 3 dup */
-
- case ICMD_DUP_X1:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst->prev);
- reg_new_temp(rd, dst->prev->prev);
- break;
+ if (!simplereg_alloc_dup(jd, iptr->s1.varindex, iptr->dst.varindex)) {
+ NEW_TEMP_REG(iptr->dst.varindex);
+ }
+ else {
+ v = VAROP(iptr->dst);
+
+ if (v->flags & INMEMORY) {
+ int32_t memindex = v->vv.regoff / SIZE_OF_STACKSLOT;
+ if (memindex >= rd->memcopycountsize) {
+ int newsize = (memindex + 1) * 2;
+ i = rd->memcopycountsize;
+ rd->memcopycount = DMREALLOC(rd->memcopycount, int, i, newsize);
+ MZERO(rd->memcopycount + i, int, newsize - i);
+ rd->memcopycountsize = newsize;
+ }
+ rd->memcopycount[memindex]++;
+ }
+ else {
+ /* XXX split reg/mem variables on arm may need special handling here */
- /* pop 3 push 4 dup */
-
- case ICMD_DUP_X2:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst->prev);
- reg_free_temp(rd, src->prev->prev);
- reg_new_temp(rd, dst->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev);
- break;
+ s4 regindex = REG_INDEX(v->vv.regoff, v->type);
- /* pop 3 push 5 dup */
-
- case ICMD_DUP2_X1:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst->prev);
- reg_free_temp(rd, src->prev->prev);
- reg_new_temp(rd, dst->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev->prev);
+ rd->regcopycount[regindex]++;
+ }
+ }
break;
- /* pop 4 push 6 dup */
-
- case ICMD_DUP2_X2:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst->prev);
- reg_free_temp(rd, src->prev->prev);
- reg_new_temp(rd, dst->prev->prev);
- reg_free_temp(rd, src->prev->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev->prev);
- reg_new_temp(rd, dst->prev->prev->prev->prev->prev);
- break;
+ /* pop 1 push 1 move */
- /* pop 2 push 2 swap */
-
- case ICMD_SWAP:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst->prev);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst);
+ case ICMD_MOVE:
+ if (!simplereg_alloc_dup(jd, iptr->s1.varindex, iptr->dst.varindex)) {
+ NEW_TEMP_REG(iptr->dst.varindex);
+ FREE_TEMP_REG(iptr->s1.varindex);
+ }
break;
/* pop 2 push 1 */
case ICMD_FCMPG:
case ICMD_DCMPL:
case ICMD_DCMPG:
- reg_free_temp(rd, src);
- reg_free_temp(rd, src->prev);
- reg_new_temp(rd, dst);
+ FREE_TEMP_REG(iptr->sx.s23.s2.varindex);
+ FREE_TEMP_REG(iptr->s1.varindex);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
/* pop 1 push 1 */
case ICMD_LSHRCONST:
case ICMD_LUSHRCONST:
- case ICMD_IFEQ_ICONST:
- case ICMD_IFNE_ICONST:
- case ICMD_IFLT_ICONST:
- case ICMD_IFGE_ICONST:
- case ICMD_IFGT_ICONST:
- case ICMD_IFLE_ICONST:
-
case ICMD_INEG:
case ICMD_INT2BYTE:
case ICMD_INT2CHAR:
case ICMD_ANEWARRAY:
case ICMD_GETFIELD:
- reg_free_temp(rd, src);
- reg_new_temp(rd, dst);
+ FREE_TEMP_REG(iptr->s1.varindex);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
/* pop 0 push 1 */
case ICMD_GETSTATIC:
case ICMD_NEW:
- reg_new_temp(rd, dst);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
/* pop many push any */
case ICMD_INVOKESPECIAL:
case ICMD_INVOKEVIRTUAL:
case ICMD_INVOKEINTERFACE:
- lm = iptr->val.a;
-
- if (lm)
- md = lm->parseddesc;
- else {
- unresolved_method *um = iptr->target;
- md = um->methodref->parseddesc.md;
- }
+ INSTRUCTION_GET_METHODDESC(iptr,md);
i = md->paramcount;
+ argp = iptr->sx.s23.s2.args;
while (--i >= 0) {
- reg_free_temp(rd, src);
- src = src->prev;
+ FREE_TEMP_REG(*argp);
+ argp++;
}
if (md->returntype.type != TYPE_VOID)
- reg_new_temp(rd, dst);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
case ICMD_BUILTIN:
- bte = iptr->val.a;
+ bte = iptr->sx.s23.s3.bte;
md = bte->md;
i = md->paramcount;
+ argp = iptr->sx.s23.s2.args;
while (--i >= 0) {
- reg_free_temp(rd, src);
- src = src->prev;
+ FREE_TEMP_REG(*argp);
+ argp++;
}
if (md->returntype.type != TYPE_VOID)
- reg_new_temp(rd, dst);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
case ICMD_MULTIANEWARRAY:
- i = iptr->op1;
+ i = iptr->s1.argcount;
+ argp = iptr->sx.s23.s2.args;
while (--i >= 0) {
- reg_free_temp(rd, src);
- src = src->prev;
+ FREE_TEMP_REG(*argp);
+ argp++;
}
- reg_new_temp(rd, dst);
+ NEW_TEMP_REG(iptr->dst.varindex);
break;
default:
- throw_cacao_exception_exit(string_java_lang_InternalError,
- "Unknown ICMD %d during register allocation",
- iptr->opc);
+ exceptions_throw_internalerror("Unknown ICMD %d during register allocation",
+ iptr->opc);
+ return;
} /* switch */
iptr++;
} /* while instructions */
#if defined(ENABLE_STATISTICS)
-void reg_make_statistics( methodinfo *m, codegendata *cd, registerdata *rd) {
- int i,type;
+void simplereg_make_statistics(jitdata *jd)
+{
+ methodinfo *m;
+ codegendata *cd;
+ registerdata *rd;
+ int i;
s4 len;
+#if 0
stackptr src, src_old;
stackptr dst;
instruction *iptr;
+#endif
basicblock *bptr;
int size_interface; /* == maximum size of in/out stack at basic block boundaries */
bool in_register;
+ varinfo *var;
+
+ /* get required compiler data */
+
+ m = jd->m;
+ cd = jd->cd;
+ rd = jd->rd;
in_register = true;
size_interface = 0;
/* count how many local variables are held in memory or register */
- for(i=0; i < cd->maxlocals; i++)
- for (type=0; type <=4; type++)
- if (rd->locals[i][type].type != -1) { /* valid local */
- if (rd->locals[i][type].flags & INMEMORY) {
- count_locals_spilled++;
- in_register=false;
- }
- else
- count_locals_register++;
- }
+ for(i=0; i < jd->localcount; i++) {
+ if (VAR(i)->flags & INMEMORY) {
+ count_locals_spilled++;
+ in_register=false;
+ }
+ else {
+ count_locals_register++;
+ }
+ }
+
/* count how many stack slots are held in memory or register */
- bptr = m->basicblocks;
+ bptr = jd->basicblocks;
+
while (bptr != NULL) {
if (bptr->flags >= BBREACHED) {
-#if defined(ENABLE_LSRA)
+#if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
if (!opt_lsra) {
#endif
/* check for memory moves from interface to BB instack */
- dst = bptr->instack;
len = bptr->indepth;
if (len > size_interface) size_interface = len;
- while (dst != NULL) {
+ while (len) {
len--;
- if (dst->varkind != STACKVAR) {
- if ( (dst->flags & INMEMORY) ||
- (rd->interfaces[len][dst->type].flags & INMEMORY) ||
- ( (dst->flags & INMEMORY) &&
- (rd->interfaces[len][dst->type].flags & INMEMORY) &&
- (dst->regoff != rd->interfaces[len][dst->type].regoff) ))
- {
- /* one in memory or both inmemory at different offsets */
- count_mem_move_bb++;
- in_register=false;
- }
- }
+ var = VAR(bptr->invars[len]);
- dst = dst->prev;
+ /* invars statistics (currently none) */
}
/* check for memory moves from BB outstack to interface */
- dst = bptr->outstack;
len = bptr->outdepth;
if (len > size_interface) size_interface = len;
- while (dst) {
+ while (len) {
len--;
- if (dst->varkind != STACKVAR) {
- if ( (dst->flags & INMEMORY) || \
- (rd->interfaces[len][dst->type].flags & INMEMORY) || \
- ( (dst->flags & INMEMORY) && \
- (rd->interfaces[len][dst->type].flags & INMEMORY) && \
- (dst->regoff != rd->interfaces[len][dst->type].regoff) ))
- {
- /* one in memory or both inmemory at different offsets */
- count_mem_move_bb++;
- in_register=false;
- }
- }
+ var = VAR(bptr->outvars[len]);
- dst = dst->prev;
+ /* outvars statistics (currently none) */
}
-#if defined(ENABLE_LSRA)
+#if defined(ENABLE_LSRA) || defined(ENABLE_SSA)
}
#endif
+#if 0
dst = bptr->instack;
iptr = bptr->iinstr;
len = bptr->icount;
while (--len >= 0) {
src = dst;
- dst = iptr->dst;
+ dst = iptr->dst.var;
if ((src!= NULL) && (src != src_old)) { /* new stackslot */
switch (src->varkind) {
iptr++;
} /* while instructions */
+#endif
} /* if */
+
bptr = bptr->next;
} /* while blocks */
+
count_interface_size += size_interface; /* accummulate the size of the interface (between bb boundaries) */
if (in_register) count_method_in_register++;
+ if (in_register) {
+/* printf("INREGISTER: %s%s%s\n",m->class->name->text, m->name->text, m->descriptor->text); */
+ }
}
#endif /* defined(ENABLE_STATISTICS) */
* c-basic-offset: 4
* tab-width: 4
* End:
+ * vim:noexpandtab:sw=4:ts=4:
*/
projects / cacao.git / blobdiff