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[JIT] rlwinmx: Use Truncate/ZeroExtend instead of And 0xFFFFFFFF

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DrChat
2018-02-14 13:50:57 -06:00
parent bbafcc089d
commit 02b5a07bc9
1 changed files with 3 additions and 1 deletions
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4
src/xenia/cpu/ppc/ppc_emit_alu.cc
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@@ -984,8 +984,10 @@ int InstrEmit_rlwinmx(PPCHIRBuilder& f, const InstrData& i) {
// m <- MASK(MB+32, ME+32) // m <- MASK(MB+32, ME+32)
// RA <- r & m // RA <- r & m
Value* v = f.LoadGPR(i.M.RT); Value* v = f.LoadGPR(i.M.RT);
// (x||x) // (x||x)
v = f.Or(f.Shl(v, 32), f.And(v, f.LoadConstantUint64(0xFFFFFFFF))); v = f.Or(f.Shl(v, 32), f.ZeroExtend(f.Truncate(v, INT32_TYPE), INT64_TYPE));
// TODO(benvanik): optimize srwi // TODO(benvanik): optimize srwi
// TODO(benvanik): optimize slwi // TODO(benvanik): optimize slwi
// The compiler will generate a bunch of these for the special case of SH=0. // The compiler will generate a bunch of these for the special case of SH=0.