diff options
Diffstat (limited to 'src/test/codegen/mem-replace-direct-memcpy.rs')
| -rw-r--r-- | src/test/codegen/mem-replace-direct-memcpy.rs | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/src/test/codegen/mem-replace-direct-memcpy.rs b/src/test/codegen/mem-replace-direct-memcpy.rs deleted file mode 100644 index e8bbf0e1b..000000000 --- a/src/test/codegen/mem-replace-direct-memcpy.rs +++ /dev/null @@ -1,24 +0,0 @@ -// This test ensures that `mem::replace::<T>` only ever calls `@llvm.memcpy` -// with `size_of::<T>()` as the size, and never goes through any wrapper that -// may e.g. multiply `size_of::<T>()` with a variable "count" (which is only -// known to be `1` after inlining). - -// compile-flags: -C no-prepopulate-passes -Zinline-mir=no -// ignore-debug: the debug assertions get in the way - -#![crate_type = "lib"] - -pub fn replace_byte(dst: &mut u8, src: u8) -> u8 { - std::mem::replace(dst, src) -} - -// NOTE(eddyb) the `CHECK-NOT`s ensure that the only calls of `@llvm.memcpy` in -// the entire output, are the two direct calls we want, from `ptr::replace`. - -// CHECK-NOT: call void @llvm.memcpy -// CHECK: ; core::mem::replace -// CHECK-NOT: call void @llvm.memcpy -// CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 1 %{{.*}}, {{i8\*|ptr}} align 1 %{{.*}}, i{{.*}} 1, i1 false) -// CHECK-NOT: call void @llvm.memcpy -// CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 1 %{{.*}}, {{i8\*|ptr}} align 1 %{{.*}}, i{{.*}} 1, i1 false) -// CHECK-NOT: call void @llvm.memcpy |