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| author | bors <bors@rust-lang.org> | 2023-08-16 11:07:13 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2023-08-16 11:07:13 +0000 |
| commit | 1ec628d7fa3cbf1241e93fb7aff1faa0441eea09 (patch) | |
| tree | 6175790eacd3016b6b34df28070f42f09c8ed5c9 /tests/codegen | |
| parent | 2bc7929138a3e1460cac48fcd320f87d1da5ceaf (diff) | |
| parent | 8d514f2e9876426c76178b7dcf2d9ddb9a9c6078 (diff) | |
| download | rust-1ec628d7fa3cbf1241e93fb7aff1faa0441eea09.tar.gz rust-1ec628d7fa3cbf1241e93fb7aff1faa0441eea09.zip | |
Auto merge of #114850 - khei4:khei4/trailing_zero_codegen, r=nikic
add codegen test for `trailing_zeros` comparison This PR add codegen test for https://github.com/rust-lang/rust/issues/107554#issuecomment-1677369236 Fixes #107554.
Diffstat (limited to 'tests/codegen')
| -rw-r--r-- | tests/codegen/trailing_zeros.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/codegen/trailing_zeros.rs b/tests/codegen/trailing_zeros.rs new file mode 100644 index 00000000000..2ea0e447abe --- /dev/null +++ b/tests/codegen/trailing_zeros.rs @@ -0,0 +1,22 @@ +// compile-flags: -O +// min-llvm-version: 17 + +#![crate_type = "lib"] + +// CHECK-LABEL: @trailing_zeros_ge +#[no_mangle] +pub fn trailing_zeros_ge(val: u32) -> bool { + // CHECK: %[[AND:.*]] = and i32 %val, 7 + // CHECK: %[[ICMP:.*]] = icmp eq i32 %[[AND]], 0 + // CHECK: ret i1 %[[ICMP]] + val.trailing_zeros() >= 3 +} + +// CHECK-LABEL: @trailing_zeros_gt +#[no_mangle] +pub fn trailing_zeros_gt(val: u64) -> bool { + // CHECK: %[[AND:.*]] = and i64 %val, 15 + // CHECK: %[[ICMP:.*]] = icmp eq i64 %[[AND]], 0 + // CHECK: ret i1 %[[ICMP]] + val.trailing_zeros() > 3 +} |