From 4f8b68fb0424ccd273107e45709acb6a5c35cecb Mon Sep 17 00:00:00 2001 From: ReinUsesLisp Date: Wed, 2 Jun 2021 03:10:15 -0300 Subject: [PATCH] shader: Avoid CPU side undefined behavior on I2F --- .../translate/impl/integer_floating_point_conversion.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_floating_point_conversion.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_floating_point_conversion.cpp index d6224d5cc..e0e157275 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_floating_point_conversion.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_floating_point_conversion.cpp @@ -114,6 +114,8 @@ void I2F(TranslatorVisitor& v, u64 insn, IR::U32U64 src) { IR::U1 is_least; if (src_bitsize == 64) { is_least = v.ir.IEqual(src, v.ir.Imm64(std::numeric_limits::min())); + } else if (src_bitsize == 32) { + is_least = v.ir.IEqual(src, v.ir.Imm32(std::numeric_limits::min())); } else { const IR::U32 least_value{v.ir.Imm32(-(1 << (src_bitsize - 1)))}; is_least = v.ir.IEqual(src, least_value);