75 lines
2.0 KiB
Rust
75 lines
2.0 KiB
Rust
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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// compile-flags: -C no-prepopulate-passes
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#![crate_type = "lib"]
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// CHECK-LABEL: @zero_sized_elem
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#[no_mangle]
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pub fn zero_sized_elem() {
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// CHECK-NOT: br label %repeat_loop_header{{.*}}
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// CHECK-NOT: call void @llvm.memset.p0i8
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let x = [(); 4];
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drop(&x);
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}
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// CHECK-LABEL: @zero_len_array
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#[no_mangle]
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pub fn zero_len_array() {
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// CHECK-NOT: br label %repeat_loop_header{{.*}}
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// CHECK-NOT: call void @llvm.memset.p0i8
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let x = [4; 0];
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drop(&x);
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}
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// CHECK-LABEL: @byte_array
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#[no_mangle]
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pub fn byte_array() {
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// CHECK: call void @llvm.memset.p0i8.i[[WIDTH:[0-9]+]](i8* {{.*}}, i8 7, i[[WIDTH]] 4
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// CHECK-NOT: br label %repeat_loop_header{{.*}}
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let x = [7u8; 4];
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drop(&x);
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}
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#[allow(dead_code)]
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#[derive(Copy, Clone)]
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enum Init {
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Loop,
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Memset,
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}
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// CHECK-LABEL: @byte_enum_array
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#[no_mangle]
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pub fn byte_enum_array() {
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// CHECK: call void @llvm.memset.p0i8.i[[WIDTH:[0-9]+]](i8* {{.*}}, i8 {{.*}}, i[[WIDTH]] 4
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// CHECK-NOT: br label %repeat_loop_header{{.*}}
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let x = [Init::Memset; 4];
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drop(&x);
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}
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// CHECK-LABEL: @zeroed_integer_array
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#[no_mangle]
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pub fn zeroed_integer_array() {
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// CHECK: call void @llvm.memset.p0i8.i[[WIDTH:[0-9]+]](i8* {{.*}}, i8 0, i[[WIDTH]] 16
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// CHECK-NOT: br label %repeat_loop_header{{.*}}
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let x = [0u32; 4];
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drop(&x);
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}
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// CHECK-LABEL: @nonzero_integer_array
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#[no_mangle]
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pub fn nonzero_integer_array() {
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// CHECK: br label %repeat_loop_header{{.*}}
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// CHECK-NOT: call void @llvm.memset.p0i8
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let x = [0x1a_2b_3c_4d_u32; 4];
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drop(&x);
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}
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