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Stop implementing _with_overflow intrinsics in codegen backends.

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This commit is contained in:
Camille GILLOT 2023-02-18 22:06:29 +00:00
parent 7e795bdf03
commit 9f6c1df872
3 changed files with 0 additions and 50 deletions
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14
compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs
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@ -493,20 +493,6 @@ fn codegen_regular_intrinsic_call<'tcx>(
let res = crate::num::codegen_int_binop(fx, bin_op, x, y);
ret.write_cvalue(fx, res);
}
sym::add_with_overflow | sym::sub_with_overflow | sym::mul_with_overflow => {
intrinsic_args!(fx, args => (x, y); intrinsic);
assert_eq!(x.layout().ty, y.layout().ty);
let bin_op = match intrinsic {
sym::add_with_overflow => BinOp::Add,
sym::sub_with_overflow => BinOp::Sub,
sym::mul_with_overflow => BinOp::Mul,
_ => unreachable!(),
};
let res = crate::num::codegen_checked_int_binop(fx, bin_op, x, y);
ret.write_cvalue(fx, res);
}
sym::saturating_add | sym::saturating_sub => {
intrinsic_args!(fx, args => (lhs, rhs); intrinsic);