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| author | skidau <skidau@gmail.com> | 2014-09-30 13:19:45 +1000 |
|---|---|---|
| committer | skidau <skidau@gmail.com> | 2014-09-30 13:19:45 +1000 |
| commit | 7828ddd542e89e6c8b5e5f861c55543c8950b080 (patch) | |
| tree | df383199b856b2e5a71482c614ef48c273f602b4 /Source/Core | |
| parent | da221e3d9c1b8edb09f37f2d5c0b41b2aade07cb (diff) | |
| parent | de86d2003a20c547f0d03a2f29e1971f29811f89 (diff) | |
Merge pull request #1150 from FioraAeterna/extsmerge
JIT: merge lbz + extsb
Diffstat (limited to 'Source/Core')
| -rw-r--r-- | Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp b/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp index e5ea85af01..9680a8439d 100644 --- a/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp +++ b/Source/Core/Core/PowerPC/Jit64/Jit_LoadStore.cpp @@ -94,6 +94,15 @@ void Jit64::lXXx(UGeckoInstruction inst) PanicAlert("Invalid instruction"); } + // PowerPC has no 8-bit sign extended load, but x86 does, so merge extsb with the load if we find it. + if (accessSize == 8 && js.next_inst.OPCD == 31 && js.next_inst.SUBOP10 == 954 && + js.next_inst.RS == inst.RD && js.next_inst.RA == inst.RD && !js.next_inst.Rc) + { + js.downcountAmount++; + js.skipnext = true; + signExtend = true; + } + // TODO(ector): Make it dynamically enable/disable idle skipping where appropriate // Will give nice boost to dual core mode // (mb2): I agree, |