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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/move-operands.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/move-operands.rs')
| -rw-r--r-- | tests/codegen-llvm/move-operands.rs | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/codegen-llvm/move-operands.rs b/tests/codegen-llvm/move-operands.rs new file mode 100644 index 00000000000..ddad231b762 --- /dev/null +++ b/tests/codegen-llvm/move-operands.rs @@ -0,0 +1,13 @@ +// Verify that optimized MIR only copies `a` once. +//@ compile-flags: -Copt-level=3 -C no-prepopulate-passes + +#![crate_type = "lib"] + +type T = [u8; 256]; + +#[no_mangle] +pub fn f(a: T, b: fn(_: T, _: T)) { + // CHECK: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, {{.*}} 256, i1 false) + // CHECK-NOT: call void @llvm.memcpy.{{.*}}(ptr align 1 %{{.*}}, ptr align 1 %{{.*}}, {{.*}} 256, i1 false) + b(a, a) +} |