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Jit64/JitIL: Implemented simple function inlining for speedup. 

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6223 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
nodchip 2010-09-23 02:05:04 +00:00
parent 97a9c375f9
commit 5e806eb7b2
3 changed files with 40 additions and 0 deletions
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7
Source/Core/Core/Src/PowerPC/Jit64/Jit_Branch.cpp
View File

@ -221,6 +221,13 @@ void Jit64::bclrx(UGeckoInstruction inst)
INSTRUCTION_START
JITDISABLE(Branch)
if (!js.isLastInstruction &&
(inst.BO & (1 << 4)) && (inst.BO & (1 << 2))) {
if (inst.LK)
MOV(32, M(&LR), Imm32(js.compilerPC + 4));
return;
}
gpr.Flush(FLUSH_ALL);
fpr.Flush(FLUSH_ALL);

8
Source/Core/Core/Src/PowerPC/Jit64IL/JitIL_Branch.cpp
View File

@ -185,6 +185,14 @@ void JitIL::bcctrx(UGeckoInstruction inst)
void JitIL::bclrx(UGeckoInstruction inst)
{
NORMALBRANCH_START
if (!js.isLastInstruction &&
(inst.BO & (1 << 4)) && (inst.BO & (1 << 2))) {
if (inst.LK)
ibuild.EmitStoreLink(ibuild.EmitIntConst(js.compilerPC + 4));
return;
}
if (inst.hex == 0x4e800020) {
ibuild.EmitBranchUncond(ibuild.EmitLoadLink());
return;

25
Source/Core/Core/Src/PowerPC/PPCAnalyst.cpp
View File

@ -325,6 +325,8 @@ u32 Flatten(u32 address, int *realsize, BlockStats *st, BlockRegStats *gpa,
CodeOp *code = buffer->codebuffer;
bool foundExit = false;
u32 returnAddress = 0;
// Do analysis of the code, look for dependencies etc
int numSystemInstructions = 0;
for (int i = 0; i < maxsize; i++)
@ -454,6 +456,29 @@ u32 Flatten(u32 address, int *realsize, BlockStats *st, BlockRegStats *gpa,
if (destination != blockstart)
follow = true;
}
else if (inst.OPCD == 19 && inst.SUBOP10 == 16 &&
(inst.BO & (1 << 4)) && (inst.BO & (1 << 2)) &&
returnAddress != 0)
{
// bclrx with unconditional branch = return
follow = true;
destination = returnAddress;
returnAddress = 0;
if (inst.LK)
returnAddress = address + 4;
}
else if (inst.OPCD == 31 && inst.SUBOP10 == 467)
{
// mtspr
const u32 index = (inst.SPRU << 5) | (inst.SPRL & 0x1F);
if (index == SPR_LR) {
// We give up to follow the return address
// because we have to check the register usage.
returnAddress = 0;
}
}
if (follow)
numFollows++;
// TODO: Find the optimal value for FUNCTION_FOLLOWING_THRESHOLD.