29 lines
753 B
Rust
29 lines
753 B
Rust
//@ compile-flags: -Copt-level=3
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#![crate_type = "lib"]
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use std::mem::MaybeUninit;
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// CHECK-LABEL: @slice_fill_pass_undef
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#[no_mangle]
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pub fn slice_fill_pass_undef(s: &mut [MaybeUninit<u8>], v: MaybeUninit<u8>) {
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// CHECK: tail call void @llvm.memset.{{.*}}(ptr nonnull align 1 %s.0, i8 %v, {{.*}} %s.1, i1 false)
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// CHECK: ret
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s.fill(v);
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}
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// CHECK-LABEL: @slice_fill_uninit
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#[no_mangle]
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pub fn slice_fill_uninit(s: &mut [MaybeUninit<u8>]) {
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// CHECK-NOT: call
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// CHECK: ret void
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s.fill(MaybeUninit::uninit());
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}
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// CHECK-LABEL: @slice_wide_memset
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#[no_mangle]
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pub fn slice_wide_memset(s: &mut [u16]) {
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// CHECK: tail call void @llvm.memset.{{.*}}(ptr nonnull align 2 %s.0, i8 -1
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// CHECK: ret
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s.fill(0xFFFF);
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}
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