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96a72676d1
This avoids depending on LLVM's struct types to determine the size of the byval/sret slot.
34 lines
684 B
Rust
34 lines
684 B
Rust
//@ compile-flags: -C no-prepopulate-passes -Z mir-opt-level=0
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//
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#![crate_type = "lib"]
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#[repr(align(64))]
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pub enum Align64 {
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A(u32),
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B(u32),
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}
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pub struct Nested64 {
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a: u8,
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b: Align64,
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c: u16,
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}
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// CHECK-LABEL: @align64
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#[no_mangle]
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pub fn align64(a: u32) -> Align64 {
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// CHECK: %a64 = alloca %Align64, align 64
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// CHECK: call void @llvm.memcpy.{{.*}}(ptr align 64 %{{.*}}, ptr align 64 %{{.*}}, i{{[0-9]+}} 64, i1 false)
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let a64 = Align64::A(a);
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a64
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}
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// CHECK-LABEL: @nested64
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#[no_mangle]
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pub fn nested64(a: u8, b: u32, c: u16) -> Nested64 {
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// CHECK: %n64 = alloca %Nested64, align 64
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let n64 = Nested64 { a, b: Align64::B(b), c };
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n64
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}
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