ShuriZma
/
dolphin
mirror of https://github.com/dolphin-emu/dolphin.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Source/Core/Core/DSP/Jit/x64/DSPJitArithmetic.cpp
View File

@ -735,9 +735,8 @@ void DSPEmitter::addis(const UDSPInstruction opc)
MOV(64, R(RAX), R(tmp1)); MOV(64, R(RAX), R(tmp1));
// s64 imm = (s8)(u8)opc; // s64 imm = (s8)(u8)opc;
// imm <<= 16; // imm <<= 16;
MOV(8, R(RDX), Imm8((u8)opc)); s32 imm = static_cast<u8>(opc) << 24 >> 8;
MOVSX(64, 8, RDX, R(RDX)); MOV(64, R(RDX), Imm32(imm));
SHL(64, R(RDX), Imm8(16));
// s64 res = acc + imm; // s64 res = acc + imm;
ADD(64, R(RAX), R(RDX)); ADD(64, R(RAX), R(RDX));
// dsp_set_long_acc(dreg, res); // dsp_set_long_acc(dreg, res);