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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:58 +0000 |
commit | a4b7ed7a42c716ab9f05e351f003d589124fd55d (patch) | |
tree | b620cd3f223850b28716e474e80c58059dca5dd4 /tests/codegen/slice-init.rs | |
parent | Adding upstream version 1.67.1+dfsg1. (diff) | |
download | rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.tar.xz rustc-a4b7ed7a42c716ab9f05e351f003d589124fd55d.zip |
Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/codegen/slice-init.rs')
-rw-r--r-- | tests/codegen/slice-init.rs | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/tests/codegen/slice-init.rs b/tests/codegen/slice-init.rs new file mode 100644 index 000000000..794b773a7 --- /dev/null +++ b/tests/codegen/slice-init.rs @@ -0,0 +1,64 @@ +// compile-flags: -C no-prepopulate-passes + +#![crate_type = "lib"] + +// CHECK-LABEL: @zero_sized_elem +#[no_mangle] +pub fn zero_sized_elem() { + // CHECK-NOT: br label %repeat_loop_header{{.*}} + // CHECK-NOT: call void @llvm.memset.p0 + let x = [(); 4]; + drop(&x); +} + +// CHECK-LABEL: @zero_len_array +#[no_mangle] +pub fn zero_len_array() { + // CHECK-NOT: br label %repeat_loop_header{{.*}} + // CHECK-NOT: call void @llvm.memset.p0 + let x = [4; 0]; + drop(&x); +} + +// CHECK-LABEL: @byte_array +#[no_mangle] +pub fn byte_array() { + // CHECK: call void @llvm.memset.{{.+}}({{i8\*|ptr}} {{.*}}, i8 7, i{{[0-9]+}} 4 + // CHECK-NOT: br label %repeat_loop_header{{.*}} + let x = [7u8; 4]; + drop(&x); +} + +#[allow(dead_code)] +#[derive(Copy, Clone)] +enum Init { + Loop, + Memset, +} + +// CHECK-LABEL: @byte_enum_array +#[no_mangle] +pub fn byte_enum_array() { + // CHECK: call void @llvm.memset.{{.+}}({{i8\*|ptr}} {{.*}}, i8 {{.*}}, i{{[0-9]+}} 4 + // CHECK-NOT: br label %repeat_loop_header{{.*}} + let x = [Init::Memset; 4]; + drop(&x); +} + +// CHECK-LABEL: @zeroed_integer_array +#[no_mangle] +pub fn zeroed_integer_array() { + // CHECK: call void @llvm.memset.{{.+}}({{i8\*|ptr}} {{.*}}, i8 0, i{{[0-9]+}} 16 + // CHECK-NOT: br label %repeat_loop_header{{.*}} + let x = [0u32; 4]; + drop(&x); +} + +// CHECK-LABEL: @nonzero_integer_array +#[no_mangle] +pub fn nonzero_integer_array() { + // CHECK: br label %repeat_loop_header{{.*}} + // CHECK-NOT: call void @llvm.memset.p0 + let x = [0x1a_2b_3c_4d_u32; 4]; + drop(&x); +} |