diff options
Diffstat (limited to 'src/test/codegen/uninit-consts.rs')
-rw-r--r-- | src/test/codegen/uninit-consts.rs | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/src/test/codegen/uninit-consts.rs b/src/test/codegen/uninit-consts.rs deleted file mode 100644 index 4c07740b3..000000000 --- a/src/test/codegen/uninit-consts.rs +++ /dev/null @@ -1,55 +0,0 @@ -// compile-flags: -C no-prepopulate-passes -// min-llvm-version: 14.0 - -// Check that we use undef (and not zero) for uninitialized bytes in constants. - -#![crate_type = "lib"] - -use std::mem::MaybeUninit; - -pub struct PartiallyUninit { - x: u32, - y: MaybeUninit<[u8; 10]> -} - -// CHECK: [[FULLY_UNINIT:@[0-9]+]] = private unnamed_addr constant <{ [10 x i8] }> undef - -// CHECK: [[PARTIALLY_UNINIT:@[0-9]+]] = private unnamed_addr constant <{ [4 x i8], [12 x i8] }> <{ [4 x i8] c"\EF\BE\AD\DE", [12 x i8] undef }>, align 4 - -// This shouldn't contain undef, since it contains more chunks -// than the default value of uninit_const_chunk_threshold. -// CHECK: [[UNINIT_PADDING_HUGE:@[0-9]+]] = private unnamed_addr constant <{ [32768 x i8] }> <{ [32768 x i8] c"{{.+}}" }>, align 4 - -// CHECK: [[FULLY_UNINIT_HUGE:@[0-9]+]] = private unnamed_addr constant <{ [16384 x i8] }> undef - -// CHECK-LABEL: @fully_uninit -#[no_mangle] -pub const fn fully_uninit() -> MaybeUninit<[u8; 10]> { - const M: MaybeUninit<[u8; 10]> = MaybeUninit::uninit(); - // CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 1 %{{[0-9]+}}, {{i8\*|ptr}} align 1 {{.*}}[[FULLY_UNINIT]]{{.*}}, i{{(32|64)}} 10, i1 false) - M -} - -// CHECK-LABEL: @partially_uninit -#[no_mangle] -pub const fn partially_uninit() -> PartiallyUninit { - const X: PartiallyUninit = PartiallyUninit { x: 0xdeadbeef, y: MaybeUninit::uninit() }; - // CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 4 %{{[0-9]+}}, {{i8\*|ptr}} align 4 {{.*}}[[PARTIALLY_UNINIT]]{{.*}}, i{{(32|64)}} 16, i1 false) - X -} - -// CHECK-LABEL: @uninit_padding_huge -#[no_mangle] -pub const fn uninit_padding_huge() -> [(u32, u8); 4096] { - const X: [(u32, u8); 4096] = [(123, 45); 4096]; - // CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 4 %{{[0-9]+}}, {{i8\*|ptr}} align 4 {{.*}}[[UNINIT_PADDING_HUGE]]{{.*}}, i{{(32|64)}} 32768, i1 false) - X -} - -// CHECK-LABEL: @fully_uninit_huge -#[no_mangle] -pub const fn fully_uninit_huge() -> MaybeUninit<[u32; 4096]> { - const F: MaybeUninit<[u32; 4096]> = MaybeUninit::uninit(); - // CHECK: call void @llvm.memcpy.{{.+}}({{i8\*|ptr}} align 4 %{{[0-9]+}}, {{i8\*|ptr}} align 4 {{.*}}[[FULLY_UNINIT_HUGE]]{{.*}}, i{{(32|64)}} 16384, i1 false) - F -} |