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| author | bors <bors@rust-lang.org> | 2023-01-11 19:56:44 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2023-01-11 19:56:44 +0000 |
| commit | 1e4f90061cc4bc566f99ab21b1f101182b10cf0c (patch) | |
| tree | 3ca9bdf5d20f478cdb3fc5e1d4de8a37afe83f4b /tests | |
| parent | ef4046e4f3932991971cdb64915172899532aece (diff) | |
| parent | 13eec69e1c192afcac098c8c332a4cc9990b2c1c (diff) | |
| download | rust-1e4f90061cc4bc566f99ab21b1f101182b10cf0c.tar.gz rust-1e4f90061cc4bc566f99ab21b1f101182b10cf0c.zip | |
Auto merge of #106660 - saethlin:destprop-move-codegen, r=tmiasko
Add a regression test for argument copies with DestinationPropagation This example, as a codegen test: https://github.com/rust-lang/rust/pull/105813#issuecomment-1367947793 r? `@tmiasko`
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/codegen/move-operands.rs | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tests/codegen/move-operands.rs b/tests/codegen/move-operands.rs new file mode 100644 index 00000000000..6c51324a312 --- /dev/null +++ b/tests/codegen/move-operands.rs @@ -0,0 +1,12 @@ +// compile-flags: -C no-prepopulate-passes -Zmir-enable-passes=+DestinationPropagation + +#![crate_type = "lib"] + +type T = [u8; 256]; + +#[no_mangle] +pub fn f(a: T, b: fn(_: T, _: T)) { + // CHECK: call void @llvm.memcpy.{{.*}}({{i8\*|ptr}} align 1 %{{.*}}, {{i8\*|ptr}} align 1 %{{.*}}, {{.*}} 256, i1 false) + // CHECK-NOT: call void @llvm.memcpy.{{.*}}({{i8\*|ptr}} align 1 %{{.*}}, {{i8\*|ptr}} align 1 %{{.*}}, {{.*}} 256, i1 false) + b(a, a) +} |