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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs')
-rw-r--r-- | tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs b/tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs new file mode 100644 index 000000000..7da29cd79 --- /dev/null +++ b/tests/codegen/issue-98294-get-mut-copy-from-slice-opt.rs @@ -0,0 +1,19 @@ +// min-llvm-version: 15.0.0 +// ignore-debug: The debug assertions get in the way +// compile-flags: -O + +#![crate_type = "lib"] + +// There should be no calls to panic / len_mismatch_fail. + +#[no_mangle] +pub fn test(a: &mut [u8], offset: usize, bytes: &[u8]) { + // CHECK-LABEL: @test( + // CHECK-NOT: call + // CHECK: call void @llvm.memcpy + // CHECK-NOT: call + // CHECK: } + if let Some(dst) = a.get_mut(offset..offset + bytes.len()) { + dst.copy_from_slice(bytes); + } +} |