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x86jit: Avoid some regcache pollution.

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Unknown W. Brackets committed 2014-11-08 12:38:08 -08:00
1 parent bc7497857a
commit 761e269e5f
1 file changed
+11 -5
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Core/MIPS/x86/CompVFPU.cpp
+11 -5
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@@ -1805,9 +1805,15 @@ void Jit::Comp_Mftv(MIPSOpcode op) {
// rt = 0, imm = 255 appears to be used as a CPU interlock by some games.
if (rt != MIPS_REG_ZERO) {
if (imm < 128) { //R(rt) = VI(imm);
fpr.MapRegV(imm, 0); // TODO: Seems the V register becomes dirty here? It shouldn't.
gpr.MapReg(rt, false, true);
MOVD_xmm(gpr.R(rt), fpr.VX(imm));
if (fpr.V(imm).IsSimpleReg()) {
fpr.MapRegV(imm, 0);
gpr.MapReg(rt, false, true);
MOVD_xmm(gpr.R(rt), fpr.VX(imm));
} else {
// Let's not bother mapping the vreg.
gpr.MapReg(rt, false, true);
MOV(32, gpr.R(rt), fpr.V(imm));
}
} else if (imm < 128 + VFPU_CTRL_MAX) { //mfvc
if (imm - 128 == VFPU_CTRL_CC) {
if (gpr.IsImm(MIPS_REG_VFPUCC)) {
@@ -1834,8 +1840,8 @@ void Jit::Comp_Mftv(MIPSOpcode op) {
case 7: //mtv
if (imm < 128) { // VI(imm) = R(rt);
fpr.MapRegV(imm, MAP_DIRTY | MAP_NOINIT); // TODO: Seems the V register becomes dirty here? It shouldn't.
gpr.MapReg(rt, true, false);
fpr.MapRegV(imm, MAP_DIRTY | MAP_NOINIT);
// Let's not bother mapping rt if we don't have to.
MOVD_xmm(fpr.VX(imm), gpr.R(rt));
} else if (imm < 128 + VFPU_CTRL_MAX) { //mtvc //currentMIPS->vfpuCtrl[imm - 128] = R(rt);
if (imm - 128 == VFPU_CTRL_CC) {