bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Set both nuw and nsw in slice size calculation

Browse source 
There's an old note in the code to do this, and now that LLVM-C has an API for it, we might as well.
This commit is contained in:
Scott McMurray 2025-02-05 03:43:54 -08:00
parent a567209daa
commit 9ad6839f7a
7 changed files with 81 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

26
compiler/rustc_codegen_gcc/src/builder.rs
View file

@ -665,6 +665,7 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
a + b
}
// TODO(antoyo): should we also override the `unchecked_` versions?
fn sub(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
self.gcc_sub(a, b)
}
@ -832,31 +833,6 @@ impl<'a, 'gcc, 'tcx> BuilderMethods<'a, 'tcx> for Builder<'a, 'gcc, 'tcx> {
set_rvalue_location(self, self.gcc_not(a))
}
fn unchecked_sadd(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
set_rvalue_location(self, self.gcc_add(a, b))
}
fn unchecked_uadd(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
set_rvalue_location(self, self.gcc_add(a, b))
}
fn unchecked_ssub(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
set_rvalue_location(self, self.gcc_sub(a, b))
}
fn unchecked_usub(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
// TODO(antoyo): should generate poison value?
set_rvalue_location(self, self.gcc_sub(a, b))
}
fn unchecked_smul(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
set_rvalue_location(self, self.gcc_mul(a, b))
}
fn unchecked_umul(&mut self, a: RValue<'gcc>, b: RValue<'gcc>) -> RValue<'gcc> {
set_rvalue_location(self, self.gcc_mul(a, b))
}
fn fadd_fast(&mut self, lhs: RValue<'gcc>, rhs: RValue<'gcc>) -> RValue<'gcc> {
// NOTE: it seems like we cannot enable fast-mode for a single operation in GCC.
set_rvalue_location(self, lhs + rhs)