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28 lines
678 B
Rust
28 lines
678 B
Rust
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//@ revisions: WIN LIN
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//@ [WIN] only-windows
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//@ [LIN] only-linux
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//@ assembly-output: emit-asm
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//@ compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel
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//@ only-x86_64
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//@ ignore-sgx
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use std::cmp::Ordering;
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// CHECK-lABEL: ordering_eq:
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#[no_mangle]
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pub fn ordering_eq(l: Option<Ordering>, r: Option<Ordering>) -> bool {
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// Linux (System V): first two arguments are rdi then rsi
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// Windows: first two arguments are rcx then rdx
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// Both use rax for the return value.
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// CHECK-NOT: mov
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// CHECK-NOT: test
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// CHECK-NOT: cmp
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// LIN: cmp dil, sil
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// WIN: cmp cl, dl
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// CHECK-NEXT: sete al
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// CHECK-NEXT: ret
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l == r
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}
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