diff options
Diffstat (limited to 'tests/codegen/slice-init.rs')
| -rw-r--r-- | tests/codegen/slice-init.rs | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/tests/codegen/slice-init.rs b/tests/codegen/slice-init.rs index 794b773a776..d80628cb1d4 100644 --- a/tests/codegen/slice-init.rs +++ b/tests/codegen/slice-init.rs @@ -8,7 +8,7 @@ pub fn zero_sized_elem() { // CHECK-NOT: br label %repeat_loop_header{{.*}} // CHECK-NOT: call void @llvm.memset.p0 let x = [(); 4]; - drop(&x); + opaque(&x); } // CHECK-LABEL: @zero_len_array @@ -17,7 +17,7 @@ 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); + opaque(&x); } // CHECK-LABEL: @byte_array @@ -26,7 +26,7 @@ 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); + opaque(&x); } #[allow(dead_code)] @@ -42,7 +42,7 @@ 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); + opaque(&x); } // CHECK-LABEL: @zeroed_integer_array @@ -51,7 +51,7 @@ 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); + opaque(&x); } // CHECK-LABEL: @nonzero_integer_array @@ -60,5 +60,9 @@ 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); + opaque(&x); } + +// Use an opaque function to prevent rustc from removing useless drops. +#[inline(never)] +pub fn opaque(_: impl Sized) {} |