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DSPJitArithmetic: Precompute addis immediate 

Compute immediate value at compile time.
This commit is contained in:
Sintendo 2019-06-05 23:36:30 +02:00
parent 3951d238d9
commit 5b5886160e
1 changed files with 2 additions and 3 deletions
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5
Source/Core/Core/DSP/Jit/x64/DSPJitArithmetic.cpp
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@ -735,9 +735,8 @@ void DSPEmitter::addis(const UDSPInstruction opc)
MOV(64, R(RAX), R(tmp1));
// s64 imm = (s8)(u8)opc;
// imm <<= 16;
MOV(8, R(RDX), Imm8((u8)opc));
MOVSX(64, 8, RDX, R(RDX));
SHL(64, R(RDX), Imm8(16));
s32 imm = static_cast<u8>(opc) << 24 >> 8;
MOV(64, R(RDX), Imm32(imm));
// s64 res = acc + imm;
ADD(64, R(RAX), R(RDX));
// dsp_set_long_acc(dreg, res);