Merged subtype and current trunk.

[cacao.git] / src / vm / jit / x86_64 / codegen.c

diff --git a/src/vm/jit/x86_64/codegen.c b/src/vm/jit/x86_64/codegen.c
index c2cbea33fb035eb017d512e0ec0540e6992cc246..ff7bf884adf8c04bf84fa4e75f8dba34c68e03af 100644 (file)
--- a/src/vm/jit/x86_64/codegen.c
+++ b/src/vm/jit/x86_64/codegen.c
@@ -2567,30 +2567,41 @@ gen_method:
                                        M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
                                        M_ALD(REG_ITMP3, RIP, disp);
 
-                                       M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
-
-                                       /*                                      if (s1 != REG_ITMP1) { */
-                                       /*                                              emit_movl_membase_reg(cd, REG_ITMP3, */
-                                       /*                                                                                              OFFSET(vftbl_t, baseval), */
-                                       /*                                                                                              REG_ITMP1); */
-                                       /*                                              emit_movl_membase_reg(cd, REG_ITMP3, */
-                                       /*                                                                                              OFFSET(vftbl_t, diffval), */
-                                       /*                                                                                              REG_ITMP3); */
-                                       /*  #if defined(ENABLE_THREADS) */
-                                       /*                                              codegen_threadcritstop(cd, cd->mcodeptr - cd->mcodebase); */
-                                       /*  #endif */
-                                       /*                                              emit_alu_reg_reg(cd, ALU_SUB, REG_ITMP1, REG_ITMP2); */
-
-                                       /*                                      } else { */
-
-                                       M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, baseval));
-                                       M_ISUB(REG_ITMP3, REG_ITMP2);
-                                       M_ALD(REG_ITMP3, RIP, disp);
-                                       M_ILD(REG_ITMP3, REG_ITMP3, OFFSET(vftbl_t, diffval));
-                                       /*                                      } */
-
-                                       M_ICMP(REG_ITMP3, REG_ITMP2);
-                                       emit_classcast_check(cd, iptr, BRANCH_UGT, REG_ITMP3, s1);
+                                       if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+                                               M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+                                               M_LCMP_MEMINDEX(REG_ITMP2, 0, REG_ITMP1, 0, REG_ITMP3);
+                                               emit_label_beq(cd, BRANCH_LABEL_6);  /* good */
+
+                                               if (super == NULL) {
+                                                       M_LCMP_IMM(OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP1);
+                                                       emit_label_bne(cd, BRANCH_LABEL_10);  /* throw */
+                                               }
+
+                                               M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+                                               M_ICMP_MEMBASE(REG_ITMP2, OFFSET(vftbl_t, subtype_depth), REG_ITMP1);
+                                               emit_label_bgt(cd, BRANCH_LABEL_9);  /* throw */
+
+                                               M_ALD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+                                               M_LCMP_MEMINDEX(REG_ITMP2, -8*DISPLAY_SIZE, REG_ITMP1, 3, REG_ITMP3);
+                                               emit_label_beq(cd, BRANCH_LABEL_7);  /* good */
+
+                                               emit_label(cd, BRANCH_LABEL_9);
+                                               if (super == NULL)
+                                                       emit_label(cd, BRANCH_LABEL_10);
+
+                                               /* reload s1, might have been destroyed */
+                                               emit_load_s1(jd, iptr, REG_ITMP1);
+                                               M_ALD_MEM(s1, TRAP_ClassCastException);
+
+                                               emit_label(cd, BRANCH_LABEL_7);
+                                               emit_label(cd, BRANCH_LABEL_6);
+                                               /* reload s1, might have been destroyed */
+                                               emit_load_s1(jd, iptr, REG_ITMP1);
+                                       }
+                                       else {
+                                               M_LCMP_MEMBASE(REG_ITMP2, super->vftbl->subtype_offset, REG_ITMP3);
+                                               emit_classcast_check(cd, iptr, BRANCH_NE, REG_ITMP3, s1);
+                                       }
 
                                        if (super != NULL)
                                                emit_label(cd, BRANCH_LABEL_5);
@@ -2730,17 +2741,55 @@ gen_method:
                                        disp = dseg_add_address(cd, super->vftbl);
                                }
 
-                               M_ALD(REG_ITMP1, s1, OFFSET(java_object_t, vftbl));
-                               M_ALD(REG_ITMP2, RIP, disp);
+                               M_ALD(REG_ITMP2, s1, OFFSET(java_object_t, vftbl));
+                               M_ALD(REG_ITMP3, RIP, disp);
+
+                               if (super == NULL || super->vftbl->subtype_depth >= DISPLAY_SIZE) {
+                                       M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_offset));
+                                       M_LCMP_MEMINDEX(REG_ITMP2, 0, REG_ITMP1, 0, REG_ITMP3);
+                                       emit_label_bne(cd, BRANCH_LABEL_8); /* jump over INC/SETE */
+                                       if (d == REG_ITMP2) {
+                                               M_SETE(d);
+                                               M_BSEXT(d, d);
+                                       } else
+                                               M_LINC(d);
+                                       emit_label_br(cd, BRANCH_LABEL_6);  /* true */
+                                       emit_label(cd, BRANCH_LABEL_8);
+
+                                       if (super == NULL) {
+                                               M_LCMP_IMM(OFFSET(vftbl_t, subtype_display[DISPLAY_SIZE]), REG_ITMP1);
+                                               emit_label_bne(cd, BRANCH_LABEL_10);  /* false */
+                                       }
 
-                               M_ILD(REG_ITMP1, REG_ITMP1, OFFSET(vftbl_t, baseval));
-                               M_ILD(REG_ITMP3, REG_ITMP2, OFFSET(vftbl_t, diffval));
-                               M_ILD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, baseval));
+                                       M_ILD(REG_ITMP1, REG_ITMP3, OFFSET(vftbl_t, subtype_depth));
+                                       M_ICMP_MEMBASE(REG_ITMP2, OFFSET(vftbl_t, subtype_depth), REG_ITMP1);
+                                       emit_label_bgt(cd, BRANCH_LABEL_9);  /* false */
 
-                               M_ISUB(REG_ITMP2, REG_ITMP1);
-                               M_CLR(d); /* may be REG_ITMP2 */
-                               M_ICMP(REG_ITMP3, REG_ITMP1);
-                               M_SETULE(d);
+                                       M_ALD(REG_ITMP2, REG_ITMP2, OFFSET(vftbl_t, subtype_overflow));
+                                       M_LCMP_MEMINDEX(REG_ITMP2, -8*DISPLAY_SIZE, REG_ITMP1, 3, REG_ITMP3);
+                                       M_SETE(d);
+                                       if (d == REG_ITMP2) {
+                                               M_BSEXT(d, d);
+
+                                               emit_label_br(cd, BRANCH_LABEL_7); /* jump over M_CLR */
+                                       }
+
+                                       emit_label(cd, BRANCH_LABEL_9);
+                                       if (super == NULL)
+                                               emit_label(cd, BRANCH_LABEL_10);
+                                       if (d == REG_ITMP2) {
+                                               M_CLR(d);
+
+                                               emit_label(cd, BRANCH_LABEL_7);
+                                       }
+                                       emit_label(cd, BRANCH_LABEL_6);
+                               }
+                               else {
+                                       M_LCMP_MEMBASE(REG_ITMP2, super->vftbl->subtype_offset, REG_ITMP3);
+                                       M_SETE(d);
+                                       if (d == REG_ITMP2)
+                                               M_BSEXT(d, d);
+                               }
 
                                if (super != NULL)
                                        emit_label(cd, BRANCH_LABEL_5);