mirror of https://github.com/rust-lang/rust
44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
Rust
//@ compile-flags: -C no-prepopulate-passes -Copt-level=0
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#![crate_type = "lib"]
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#![feature(repr_simd)]
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// Hack to get the correct size for the length part in slices
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// CHECK: @helper([[USIZE:i[0-9]+]] %_1)
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#[no_mangle]
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pub fn helper(_: usize) {
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}
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// Check that we correctly generate a GEP for a ZST that is not included in Scalar layout
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// CHECK-LABEL: @scalar_layout
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#[no_mangle]
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pub fn scalar_layout(s: &(u64, ())) {
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// CHECK: getelementptr inbounds i8, {{.+}}, [[USIZE]] 8
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let x = &s.1;
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witness(&x); // keep variable in an alloca
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}
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// Check that we correctly generate a GEP for a ZST that is not included in ScalarPair layout
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// CHECK-LABEL: @scalarpair_layout
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#[no_mangle]
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pub fn scalarpair_layout(s: &(u64, u32, ())) {
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// CHECK: getelementptr inbounds i8, {{.+}}, [[USIZE]] 12
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let x = &s.2;
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witness(&x); // keep variable in an alloca
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}
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#[repr(simd)]
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pub struct U64x4(u64, u64, u64, u64);
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// Check that we correctly generate a GEP for a ZST that is not included in Vector layout
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// CHECK-LABEL: @vector_layout
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#[no_mangle]
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pub fn vector_layout(s: &(U64x4, ())) {
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// CHECK: getelementptr inbounds i8, {{.+}}, [[USIZE]] 32
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let x = &s.1;
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witness(&x); // keep variable in an alloca
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}
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#[inline(never)]
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fn witness(_: &impl Sized) {}
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