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| author | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-21 14:34:12 +0200 |
|---|---|---|
| committer | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2025-07-22 14:28:48 +0200 |
| commit | a27f3e3fd1e4d16160f8885b6b06665b5319f56c (patch) | |
| tree | b033935392cbadf6f85d2dbddf433a88e323aeeb /tests/codegen-llvm/vec-len-invariant.rs | |
| parent | ed93c1783b404d728d4809973a0550eb33cd293f (diff) | |
| download | rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.tar.gz rust-a27f3e3fd1e4d16160f8885b6b06665b5319f56c.zip | |
Rename `tests/codegen` into `tests/codegen-llvm`
Diffstat (limited to 'tests/codegen-llvm/vec-len-invariant.rs')
| -rw-r--r-- | tests/codegen-llvm/vec-len-invariant.rs | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/codegen-llvm/vec-len-invariant.rs b/tests/codegen-llvm/vec-len-invariant.rs new file mode 100644 index 00000000000..033181c2bfb --- /dev/null +++ b/tests/codegen-llvm/vec-len-invariant.rs @@ -0,0 +1,16 @@ +//@ compile-flags: -Copt-level=3 +//@ only-64bit +// +// This test confirms that we do not reload the length of a Vec after growing it in push. + +#![crate_type = "lib"] + +// CHECK-LABEL: @should_load_once +#[no_mangle] +pub fn should_load_once(v: &mut Vec<u8>) { + // CHECK: load i64 + // CHECK: call {{.*}}grow_one + // CHECK-NOT: load i64 + // CHECK: add {{.*}}, 1 + v.push(1); +} |