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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/codegen/intrinsics/likely.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/codegen/intrinsics/likely.rs')
-rw-r--r-- | tests/codegen/intrinsics/likely.rs | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/codegen/intrinsics/likely.rs b/tests/codegen/intrinsics/likely.rs new file mode 100644 index 000000000..c5a0185bd --- /dev/null +++ b/tests/codegen/intrinsics/likely.rs @@ -0,0 +1,30 @@ +// compile-flags: -C no-prepopulate-passes + +#![crate_type = "lib"] +#![feature(core_intrinsics)] + +use std::intrinsics::{likely,unlikely}; + +#[no_mangle] +pub fn check_likely(x: i32, y: i32) -> Option<i32> { + unsafe { + // CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 true) + if likely(x == y) { + None + } else { + Some(x + y) + } + } +} + +#[no_mangle] +pub fn check_unlikely(x: i32, y: i32) -> Option<i32> { + unsafe { + // CHECK: call i1 @llvm.expect.i1(i1 %{{.*}}, i1 false) + if unlikely(x == y) { + None + } else { + Some(x + y) + } + } +} |