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Lower intrinsics::offset to mir::BinOp::Offset

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They're semantically the same, so this means the backends don't need to handle the intrinsic and means fewer MIR basic blocks in pointer arithmetic code.
This commit is contained in:
Scott McMurray 2023-04-25 12:10:55 -07:00
parent a7aa20517c
commit 05a665f21a
7 changed files with 66 additions and 20 deletions
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2
compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
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@ -534,7 +534,7 @@ fn codegen_regular_intrinsic_call<'tcx>(
// The only difference between offset and arith_offset is regarding UB. Because Cranelift
// doesn't have UB both are codegen'ed the same way
sym::offset | sym::arith_offset => {
sym::arith_offset => {
intrinsic_args!(fx, args => (base, offset); intrinsic);
let offset = offset.load_scalar(fx);