forked from OSchip/llvm-project
33 lines
744 B
LLVM
33 lines
744 B
LLVM
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; RUN: llc < %s | FileCheck %s -check-prefix=NOIPRA
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; RUN: llc -enable-ipra < %s | FileCheck %s
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target triple = "x86_64-unknown-unknown"
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define void @bar1() {
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ret void
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}
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define preserve_allcc void @foo()#0 {
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; Due to preserve_allcc foo() will save some registers at start of foo()
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; prefix NOIPRA will verify that.
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; NOIPRA-LABEL: foo:
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; NOIPRA: pushq %r10
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; NOIPRA-NEXT: pushq %r9
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; NOIPRA-NEXT: pushq %r8
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; NOIPRA: callq bar1
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; When IPRA is present above registers will not be saved and that is verified
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; by prefix CHECK.
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; CHECK: foo:
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; CHECK-NOT: pushq %r10
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; CHECK-NOT: pushq %r9
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; CHECK-NOT: pushq %r8
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; CHECK: callq bar1
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call void @bar1()
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call void @bar2()
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ret void
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}
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define void @bar2() {
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ret void
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}
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attributes #0 = {nounwind}
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