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x86/x64: Drop xmm register/memory move tuning for K8.

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This commit is contained in:
Mike Pall
2013-02-21 17:04:00 +01:00
parent 57768cd588
commit c3219b7d17
4 changed files with 14 additions and 26 deletions
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10
src/lj_emit_x86.h
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@@ -241,10 +241,6 @@ static void emit_gmrmi(ASMState *as, x86Group xg, Reg rb, int32_t i)
/* -- Emit loads/stores --------------------------------------------------- */
/* Instruction selection for XMM moves. */
#define XMM_MOVRR(as) ((as->flags & JIT_F_SPLIT_XMM) ? XO_MOVSD : XO_MOVAPS)
#define XMM_MOVRM(as) ((as->flags & JIT_F_SPLIT_XMM) ? XO_MOVLPD : XO_MOVSD)
/* mov [base+ofs], i */
static void emit_movmroi(ASMState *as, Reg base, int32_t ofs, int32_t i)
{
@@ -314,7 +310,7 @@ static void emit_loadn(ASMState *as, Reg r, cTValue *tv)
if (tvispzero(tv)) /* Use xor only for +0. */
emit_rr(as, XO_XORPS, r, r);
else
emit_rma(as, XMM_MOVRM(as), r, &tv->n);
emit_rma(as, XO_MOVSD, r, &tv->n);
}
/* -- Emit control-flow instructions -------------------------------------- */
@@ -427,7 +423,7 @@ static void emit_movrr(ASMState *as, IRIns *ir, Reg dst, Reg src)
if (dst < RID_MAX_GPR)
emit_rr(as, XO_MOV, REX_64IR(ir, dst), src);
else
emit_rr(as, XMM_MOVRR(as), dst, src);
emit_rr(as, XO_MOVAPS, dst, src);
}
/* Generic load of register from stack slot. */
@@ -436,7 +432,7 @@ static void emit_spload(ASMState *as, IRIns *ir, Reg r, int32_t ofs)
if (r < RID_MAX_GPR)
emit_rmro(as, XO_MOV, REX_64IR(ir, r), RID_ESP, ofs);
else
emit_rmro(as, irt_isnum(ir->t) ? XMM_MOVRM(as) : XO_MOVSS, r, RID_ESP, ofs);
emit_rmro(as, irt_isnum(ir->t) ? XO_MOVSD : XO_MOVSS, r, RID_ESP, ofs);
}
/* Generic store of register to stack slot. */