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c0457f68d4
Enable the SystemZ back-end to lower FRAMEADDR and RETURNADDR, which previously would cause the back-end to crash. Currently, only a frame count of zero is supported. Author: bryanpkc Differential Revision: http://reviews.llvm.org/D18514 llvm-svn: 265291
16 lines
415 B
LLVM
16 lines
415 B
LLVM
; Test support for the llvm.returnaddress intrinsic.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; The current function's return address is in the link register.
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define i8* @rt0() norecurse nounwind readnone {
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entry:
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; CHECK-LABEL: rt0:
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; CHECK: lgr %r2, %r14
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; CHECK: br %r14
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%0 = tail call i8* @llvm.returnaddress(i32 0)
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ret i8* %0
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}
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declare i8* @llvm.returnaddress(i32) nounwind readnone
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