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Fixed "bcl" instruction in the case where the branch is always taken. The old code would emit a "jne" that can skip the updating of LR depending on the state the host CPU happens to be in. 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@451 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Maarten ter Huurne 2008-09-07 07:04:41 +00:00
parent 72ca1e2355
commit 5ac0c33530
1 changed files with 11 additions and 4 deletions
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15
Source/Core/Core/Src/PowerPC/Jit64/Jit_Branch.cpp
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@ -161,7 +161,7 @@ namespace Jit64
if (doFullTest) if (doFullTest)
{ {
TEST(32, R(EAX), R(ECX)); TEST(32, R(EAX), R(ECX));
branch = CC_Z; branch = CC_Z;
} }
else else
@ -176,7 +176,11 @@ namespace Jit64
{ {
SUB(32, M(&CTR), Imm8(1)); SUB(32, M(&CTR), Imm8(1));
} }
FixupBranch skip = J_CC(branch); FixupBranch skip;
if (inst.BO != 20)
{
skip = J_CC(branch);
}
u32 destination; u32 destination;
if (inst.LK) if (inst.LK)
MOV(32, M(&LR), Imm32(js.compilerPC + 4)); MOV(32, M(&LR), Imm32(js.compilerPC + 4));
@ -185,8 +189,11 @@ namespace Jit64
else else
destination = js.compilerPC + SignExt16(inst.BD << 2); destination = js.compilerPC + SignExt16(inst.BD << 2);
WriteExit(destination, 0); WriteExit(destination, 0);
SetJumpTarget(skip); if (inst.BO != 20)
WriteExit(js.compilerPC + 4, 1); {
SetJumpTarget(skip);
WriteExit(js.compilerPC + 4, 1);
}
} }
void bcctrx(UGeckoInstruction inst) void bcctrx(UGeckoInstruction inst)