bjoernager/rust
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make simd_reduce_{mul,add}_unordered use only the 'reassoc' flag, not all fast-math flags

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Ralf Jung 2024-02-18 23:10:34 +01:00
parent 25fe3cc69d
commit 3dc631a61a
7 changed files with 30 additions and 22 deletions
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4
compiler/rustc_codegen_gcc/src/builder.rs
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@ -1752,7 +1752,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
self.vector_reduce(src, |a, b, context| context.new_binary_op(None, op, a.get_type(), a, b))
}
pub fn vector_reduce_fadd_fast(&mut self, _acc: RValue<'gcc>, _src: RValue<'gcc>) -> RValue<'gcc> {
pub fn vector_reduce_fadd_reassoc(&mut self, _acc: RValue<'gcc>, _src: RValue<'gcc>) -> RValue<'gcc> {
unimplemented!();
}
@ -1772,7 +1772,7 @@ impl<'a, 'gcc, 'tcx> Builder<'a, 'gcc, 'tcx> {
unimplemented!();
}
pub fn vector_reduce_fmul_fast(&mut self, _acc: RValue<'gcc>, _src: RValue<'gcc>) -> RValue<'gcc> {
pub fn vector_reduce_fmul_reassoc(&mut self, _acc: RValue<'gcc>, _src: RValue<'gcc>) -> RValue<'gcc> {
unimplemented!();
}

4
compiler/rustc_codegen_gcc/src/intrinsic/simd.rs
View file

@ -989,14 +989,14 @@ pub fn generic_simd_intrinsic<'a, 'gcc, 'tcx>(
arith_red!(
simd_reduce_add_unordered: BinaryOp::Plus,
vector_reduce_fadd_fast,
vector_reduce_fadd_reassoc,
false,
add,
0.0 // TODO: Use this argument.
);
arith_red!(
simd_reduce_mul_unordered: BinaryOp::Mult,
vector_reduce_fmul_fast,
vector_reduce_fmul_reassoc,
false,
mul,
1.0