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

Jit_Integer: srawx: Handle a != b case with SARX 

Suggested by @Sintendo

Co-authored-by: Sintendo <bram.speeckaert@gmail.com>
This commit is contained in:
merry 2021-01-01 10:20:50 +00:00 committed by MerryMage
parent d3ca5d812b
commit 71a996e33b
1 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
Source/Core/Core/PowerPC/Jit64/Jit_Integer.cpp
View File

@ -2052,17 +2052,21 @@ void Jit64::srawx(UGeckoInstruction inst)
gpr.SetImmediate32(a, 0); gpr.SetImmediate32(a, 0);
FinalizeCarry(false); FinalizeCarry(false);
} }
else if (cpu_info.bBMI2 && a != b) else if (cpu_info.bBMI2)
{ {
RCX64Reg Ra = gpr.Bind(a, RCMode::Write); RCX64Reg Ra = gpr.Bind(a, RCMode::Write);
RCX64Reg Rb = gpr.Bind(b, RCMode::Read); RCX64Reg Rb = gpr.Bind(b, RCMode::Read);
RCOpArg Rs = gpr.UseNoImm(s, RCMode::Read); RCOpArg Rs = gpr.Use(s, RCMode::Read);
RegCache::Realize(Ra, Rb, Rs); RegCache::Realize(Ra, Rb, Rs);
if (a != s) X64Reg tmp = RSCRATCH;
MOV(32, Ra, Rs); if (a == s && a != b)
SHL(64, Ra, Imm8(32)); tmp = Ra;
SARX(64, Ra, Ra, Rb); else
MOV(32, R(tmp), Rs);
SHL(64, R(tmp), Imm8(32));
SARX(64, Ra, R(tmp), Rb);
if (js.op->wantsCA) if (js.op->wantsCA)
{ {
MOV(32, R(RSCRATCH), Ra); MOV(32, R(RSCRATCH), Ra);