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This attribute is used to ensure the guard page is triggered on stack overflow. Stack frames larger than the guard page size will generate a call to __probestack to touch each page so the guard page won't be skipped. Reviewed By: majnemer Differential Revision: https://reviews.llvm.org/D34386 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305939 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
525 B
LLVM
21 lines
525 B
LLVM
; RUN: opt %s -inline -S | FileCheck %s
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define internal void @inner() "probe-stack"="__probestackinner" {
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ret void
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}
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define void @outerNoAttribute() {
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call void @inner()
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ret void
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}
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define void @outerConflictingAttribute() "probe-stack"="__probestackouter" {
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call void @inner()
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ret void
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}
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; CHECK: define void @outerNoAttribute() #0
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; CHECK: define void @outerConflictingAttribute() #1
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; CHECK: attributes #0 = { "probe-stack"="__probestackinner" }
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; CHECK: attributes #1 = { "probe-stack"="__probestackouter" }
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