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emit_arm64_saturation: Fix UnsignedSaturation for < 0

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Merry 2022-07-30 19:12:19 +01:00 • committed by merry
parent b059384bc0
commit 6d6cbe2e66
1 changed files with 3 additions and 1 deletions
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4
src/dynarmic/backend/arm64/emit_arm64_saturation.cpp
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@ -114,8 +114,10 @@ void EmitIR<IR::Opcode::UnsignedSaturation>(oaknut::CodeGenerator& code, EmitCon
const u32 saturated_value = (1u << N) - 1; const u32 saturated_value = (1u << N) - 1;
code.MOV(Wscratch0, saturated_value); code.MOV(Wscratch0, saturated_value);
code.CMP(*Woperand, 0);
code.CSEL(Wresult, Woperand, WZR, GT);
code.CMP(*Woperand, Wscratch0); code.CMP(*Woperand, Wscratch0);
code.CSEL(Wresult, Woperand, Wscratch0, LS); code.CSEL(Wresult, Wresult, Wscratch0, LT);
if (overflow_inst) { if (overflow_inst) {
auto Woverflow = ctx.reg_alloc.WriteW(overflow_inst); auto Woverflow = ctx.reg_alloc.WriteW(overflow_inst);