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32 lines
946 B
LLVM
32 lines
946 B
LLVM
; RUN: opt -S -deadargelim %s | FileCheck %s
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; Don't eliminate dead arugments from naked functions.
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; CHECK: define internal i32 @naked(i32 %x)
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define internal i32 @naked(i32 %x) #0 {
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tail call void asm sideeffect inteldialect "mov eax, [esp + $$4]\0A\09ret", "~{eax},~{dirflag},~{fpsr},~{flags}"()
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unreachable
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}
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; Don't eliminate dead varargs from naked functions.
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; CHECK: define internal i32 @naked_va(i32 %x, ...)
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define internal i32 @naked_va(i32 %x, ...) #0 {
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tail call void asm sideeffect inteldialect "mov eax, [esp + $$8]\0A\09ret", "~{eax},~{dirflag},~{fpsr},~{flags}"()
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unreachable
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}
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define i32 @f(i32 %x, i32 %y) {
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%r = call i32 @naked(i32 %x)
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%s = call i32 (i32, ...) @naked_va(i32 %x, i32 %r)
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; Make sure the arguments are still there: not removed or replaced with undef.
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; CHECK: %r = call i32 @naked(i32 %x)
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; CHECK: %s = call i32 (i32, ...) @naked_va(i32 %x, i32 %r)
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ret i32 %s
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}
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attributes #0 = { naked }
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