bjoernager/rust
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Don't codegen expect in opt-level=0

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This commit is contained in:
clubby789 2024-02-25 22:56:08 +00:00
parent 842d6fc32e
commit 5b96ae7106
4 changed files with 14 additions and 14 deletions
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17
compiler/rustc_codegen_llvm/src/intrinsic.rs
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@ -187,9 +187,7 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
Some(instance),
)
}
sym::likely => {
self.call_intrinsic("llvm.expect.i1", &[args[0].immediate(), self.const_bool(true)])
}
sym::likely => self.expect(args[0].immediate(), true),
sym::is_val_statically_known => {
let intrinsic_type = args[0].layout.immediate_llvm_type(self.cx);
let kind = self.type_kind(intrinsic_type);
@ -210,8 +208,7 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
self.const_bool(false)
}
}
sym::unlikely => self
.call_intrinsic("llvm.expect.i1", &[args[0].immediate(), self.const_bool(false)]),
sym::unlikely => self.expect(args[0].immediate(), false),
sym::select_unpredictable => {
let cond = args[0].immediate();
assert_eq!(args[1].layout, args[2].layout);
@ -604,11 +601,17 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> {
}
fn assume(&mut self, val: Self::Value) {
self.call_intrinsic("llvm.assume", &[val]);
if self.cx.sess().opts.optimize != rustc_session::config::OptLevel::No {
self.call_intrinsic("llvm.assume", &[val]);
}
}
fn expect(&mut self, cond: Self::Value, expected: bool) -> Self::Value {
self.call_intrinsic("llvm.expect.i1", &[cond, self.const_bool(expected)])
if self.cx.sess().opts.optimize != rustc_session::config::OptLevel::No {
self.call_intrinsic("llvm.expect.i1", &[cond, self.const_bool(expected)])
} else {
cond
}
}
fn type_test(&mut self, pointer: Self::Value, typeid: Self::Value) -> Self::Value {