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Jit_Integer: cntlzwx

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This commit is contained in:
MerryMage 2018-10-15 21:01:16 +01:00
parent 31bd9b5cd0
commit 5621907283
1 changed files with 11 additions and 10 deletions
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21
Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp
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@ -1921,39 +1921,40 @@ void Jit64::cntlzwx(UGeckoInstruction inst)
int s = inst.RS; int s = inst.RS;
bool needs_test = false; bool needs_test = false;
if (gpr.R(s).IsImm()) if (gpr.IsImm(s))
{ {
u32 mask = 0x80000000; u32 mask = 0x80000000;
u32 i = 0; u32 i = 0;
for (; i < 32; i++, mask >>= 1) for (; i < 32; i++, mask >>= 1)
{ {
if (gpr.R(s).Imm32() & mask) if (gpr.Imm32(s) & mask)
break; break;
} }
gpr.SetImmediate32(a, i); gpr.SetImmediate32(a, i);
} }
else else
{ {
gpr.Lock(a, s); RCX64Reg Ra = gpr.Bind(a, RCMode::Write);
gpr.BindToRegister(a, a == s, true); RCOpArg Rs = gpr.Use(s, RCMode::Read);
RegCache::Realize(Ra, Rs);
if (cpu_info.bLZCNT) if (cpu_info.bLZCNT)
{ {
LZCNT(32, gpr.RX(a), gpr.R(s)); LZCNT(32, Ra, Rs);
needs_test = true; needs_test = true;
} }
else else
{ {
BSR(32, gpr.RX(a), gpr.R(s)); BSR(32, Ra, Rs);
FixupBranch gotone = J_CC(CC_NZ); FixupBranch gotone = J_CC(CC_NZ);
MOV(32, gpr.R(a), Imm32(63)); MOV(32, Ra, Imm32(63));
SetJumpTarget(gotone); SetJumpTarget(gotone);
XOR(32, gpr.R(a), Imm8(0x1f)); // flip order XOR(32, Ra, Imm8(0x1f)); // flip order
} }
} }
if (inst.Rc) if (inst.Rc)
ComputeRC(gpr.R(a), needs_test, false); ComputeRC(a, needs_test, false);
gpr.UnlockAll();
} }
void Jit64::twX(UGeckoInstruction inst) void Jit64::twX(UGeckoInstruction inst)