nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-22 06:44:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

Auto merge of #106660 - saethlin:destprop-move-codegen, r=tmiasko

Browse Source 
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`
This commit is contained in:
bors 2023-01-11 19:56:44 +00:00
commit 1e4f90061c
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
tests/codegen/move-operands.rs Normal file
View File

@ -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)
}