-/*
- * ssa.c: Static single assign form support for the JIT compiler.
+/**
+ * \file
+ * Static single assign form support for the JIT compiler.
*
* Author:
* Dietmar Maurer (dietmar@ximian.com)
*
* (C) 2003 Ximian, Inc.
* Copyright 2011 Xamarin, Inc (http://www.xamarin.com)
+ * Licensed under the MIT license. See LICENSE file in the project root for full license information.
*/
#include <config.h>
#include <string.h>
#include <mono/metadata/debug-helpers.h>
#include <mono/metadata/mempool.h>
#include <mono/metadata/mempool-internals.h>
+#include <mono/utils/mono-compiler.h>
#ifndef DISABLE_JIT
record_use (MonoCompile *cfg, MonoInst *var, MonoBasicBlock *bb, MonoInst *ins)
{
MonoMethodVar *info;
- MonoVarUsageInfo *ui = mono_mempool_alloc (cfg->mempool, sizeof (MonoVarUsageInfo));
+ MonoVarUsageInfo *ui = (MonoVarUsageInfo *)mono_mempool_alloc (cfg->mempool, sizeof (MonoVarUsageInfo));
info = MONO_VARINFO (cfg, var->inst_c0);
/**
* mono_ssa_rename_vars:
- *
- * Implement renaming of SSA variables. Also compute def-use information in parallel.
- * @stack_history points to an area of memory which can be used for storing changes
+ * Implement renaming of SSA variables. Also compute def-use information in parallel.
+ * \p stack_history points to an area of memory which can be used for storing changes
* made to the stack, so they can be reverted later.
*/
static void
if (var->opcode == OP_ARG)
originals_used [idx] = TRUE;
- /* FIXME: */
- g_assert (stack_history_len < stack_history_size);
+ if (stack_history_len + 128 > stack_history_size) {
+ stack_history_size += 1024;
+ RenameInfo *new_history = mono_mempool_alloc (cfg->mempool, sizeof (RenameInfo) * stack_history_size);
+ memcpy (new_history, stack_history, stack_history_len * sizeof (RenameInfo));
+ stack_history = new_history;
+ }
+
stack_history [stack_history_len].var = stack [idx];
stack_history [stack_history_len].idx = idx;
stack_history_len ++;
mono_compile_dominator_info (cfg, MONO_COMP_DOM | MONO_COMP_IDOM | MONO_COMP_DFRONTIER);
bitsize = mono_bitset_alloc_size (cfg->num_bblocks, 0);
- buf = buf_start = g_malloc0 (mono_bitset_alloc_size (cfg->num_bblocks, 0) * cfg->num_varinfo);
+ buf = buf_start = (guint8 *)g_malloc0 (mono_bitset_alloc_size (cfg->num_bblocks, 0) * cfg->num_varinfo);
for (i = 0; i < cfg->num_varinfo; ++i) {
vinfo [i].def_in = mono_bitset_mem_new (buf, cfg->num_bblocks, 0);
else
ins->klass = var->klass;
- ins->inst_phi_args = mono_mempool_alloc0 (cfg->mempool, sizeof (int) * (cfg->bblocks [idx]->in_count + 1));
+ ins->inst_phi_args = (int *)mono_mempool_alloc0 (cfg->mempool, sizeof (int) * (cfg->bblocks [idx]->in_count + 1));
ins->inst_phi_args [0] = cfg->bblocks [idx]->in_count;
/* For debugging */
/* Renaming phase */
- stack = alloca (sizeof (MonoInst *) * cfg->num_varinfo);
+ stack = (MonoInst **)alloca (sizeof (MonoInst *) * cfg->num_varinfo);
memset (stack, 0, sizeof (MonoInst *) * cfg->num_varinfo);
lvreg_stack = g_new0 (guint32, cfg->next_vreg);
cfg->comp_done |= MONO_COMP_SSA;
}
+/*
+ * mono_ssa_remove_gsharedvt:
+ *
+ * Same as mono_ssa_remove, but only remove phi nodes for gsharedvt variables.
+ */
+void
+mono_ssa_remove_gsharedvt (MonoCompile *cfg)
+{
+ MonoInst *ins, *var, *move;
+ int i, j, first;
+
+ /*
+ * When compiling gsharedvt code, we need to get rid of the VPHI instructions,
+ * since they cannot be handled later in the llvm backend.
+ */
+ g_assert (cfg->comp_done & MONO_COMP_SSA);
+
+ for (i = 0; i < cfg->num_bblocks; ++i) {
+ MonoBasicBlock *bb = cfg->bblocks [i];
+
+ if (cfg->verbose_level >= 4)
+ printf ("\nREMOVE SSA %d:\n", bb->block_num);
+
+ for (ins = bb->code; ins; ins = ins->next) {
+ if (!(MONO_IS_PHI (ins) && ins->opcode == OP_VPHI && mini_is_gsharedvt_variable_type (&ins->klass->byval_arg)))
+ continue;
+
+ g_assert (ins->inst_phi_args [0] == bb->in_count);
+ var = get_vreg_to_inst (cfg, ins->dreg);
+
+ /* Check for PHI nodes where all the inputs are the same */
+ first = ins->inst_phi_args [1];
+
+ for (j = 1; j < bb->in_count; ++j)
+ if (first != ins->inst_phi_args [j + 1])
+ break;
+
+ if ((bb->in_count > 1) && (j == bb->in_count)) {
+ ins->opcode = op_phi_to_move (ins->opcode);
+ if (ins->opcode == OP_VMOVE)
+ g_assert (ins->klass);
+ ins->sreg1 = first;
+ } else {
+ for (j = 0; j < bb->in_count; j++) {
+ MonoBasicBlock *pred = bb->in_bb [j];
+ int sreg = ins->inst_phi_args [j + 1];
+
+ if (cfg->verbose_level >= 4)
+ printf ("\tADD R%d <- R%d in BB%d\n", var->dreg, sreg, pred->block_num);
+ if (var->dreg != sreg) {
+ MONO_INST_NEW (cfg, move, op_phi_to_move (ins->opcode));
+ if (move->opcode == OP_VMOVE) {
+ g_assert (ins->klass);
+ move->klass = ins->klass;
+ }
+ move->dreg = var->dreg;
+ move->sreg1 = sreg;
+ mono_add_ins_to_end (pred, move);
+ }
+ }
+
+ NULLIFY_INS (ins);
+ }
+ }
+ }
+}
+
void
mono_ssa_remove (MonoCompile *cfg)
{
if (MONO_IS_JUMP_TABLE (ins)) {
int i;
- MonoJumpInfoBBTable *table = MONO_JUMP_TABLE_FROM_INS (ins);
+ MonoJumpInfoBBTable *table = (MonoJumpInfoBBTable *)MONO_JUMP_TABLE_FROM_INS (ins);
if (!ins->next || ins->next->opcode != OP_PADD) {
/* The PADD was optimized away */
if (ins->opcode == OP_SWITCH) {
int i;
- MonoJumpInfoBBTable *table = ins->inst_p0;
+ MonoJumpInfoBBTable *table = (MonoJumpInfoBBTable *)ins->inst_p0;
for (i = 0; i < table->table_size; i++)
if (table->table [i])
if (MONO_IS_JUMP_TABLE (ins)) {
int i;
- MonoJumpInfoBBTable *table = MONO_JUMP_TABLE_FROM_INS (ins);
+ MonoJumpInfoBBTable *table = (MonoJumpInfoBBTable *)MONO_JUMP_TABLE_FROM_INS (ins);
if (!ins->next || ins->next->opcode != OP_PADD) {
/* The PADD was optimized away */
if (bb != h)
continue;
MONO_BB_FOR_EACH_INS_SAFE (bb, n, ins) {
- gboolean is_class_init = FALSE;
-
/*
* Try to move instructions out of loop headers into the preceeding bblock.
*/
- if (ins->opcode == OP_VOIDCALL) {
- MonoCallInst *call = (MonoCallInst*)ins;
-
- if (call->fptr_is_patch) {
- MonoJumpInfo *ji = (MonoJumpInfo*)call->fptr;
-
- if (ji->type == MONO_PATCH_INFO_CLASS_INIT)
- is_class_init = TRUE;
- }
- }
- if (ins->opcode == OP_LDLEN || ins->opcode == OP_STRLEN || ins->opcode == OP_CHECK_THIS || ins->opcode == OP_AOTCONST || is_class_init) {
+ if (ins->opcode == OP_LDLEN || ins->opcode == OP_STRLEN || ins->opcode == OP_CHECK_THIS || ins->opcode == OP_AOTCONST || ins->opcode == OP_GENERIC_CLASS_INIT) {
gboolean skip;
int sreg;
}
}
-#endif /* DISABLE_JIT */
+#else /* !DISABLE_JIT */
+
+MONO_EMPTY_SOURCE_FILE (ssa);
+
+#endif /* !DISABLE_JIT */
projects / mono.git / blobdiff