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Add explicit IR_GCSTEP instruction.

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This commit is contained in:
Mike Pall
2012-07-02 22:42:40 +02:00
parent 264177b0d0
commit 5d0115ef8d
6 changed files with 27 additions and 7 deletions
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3
src/lj_asm_x86.h
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@@ -2379,7 +2379,7 @@ static void asm_gc_check(ASMState *as)
asm_gencall(as, ci, args);
tmp = ra_releasetmp(as, ASMREF_TMP1);
emit_loada(as, tmp, J2G(as->J));
emit_loadi(as, ra_releasetmp(as, ASMREF_TMP2), (int32_t)as->gcsteps);
emit_loadi(as, ra_releasetmp(as, ASMREF_TMP2), as->gcsteps);
/* Jump around GC step if GC total < GC threshold. */
emit_sjcc(as, CC_B, l_end);
emit_opgl(as, XO_ARITH(XOg_CMP), tmp, gc.threshold);
@@ -2556,6 +2556,7 @@ static void asm_ir(ASMState *as, IRIns *ir)
ra_alloc1(as, ir->op1, irt_isfp(ir->t) ? RSET_FPR : RSET_GPR); break;
case IR_PHI: asm_phi(as, ir); break;
case IR_HIOP: asm_hiop(as, ir); break;
case IR_GCSTEP: asm_gcstep(as, ir); break;
/* Guarded assertions. */
case IR_LT: case IR_GE: case IR_LE: case IR_GT: