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| author | Lang Hames <lhames@gmail.com> | 2013-05-13 10:21:19 +0000 |
|---|---|---|
| committer | Lang Hames <lhames@gmail.com> | 2013-05-13 10:21:19 +0000 |
| commit | d26c93d3a8a484c5b42f06163ae5de787f0ac276 (patch) | |
| tree | 7ae10e65892092069a7dc2818de9ef0702715efd /lib/Target | |
| parent | b99052ce4a75a3eac638afcd5171903514aa28e9 (diff) | |
| download | external_llvm-d26c93d3a8a484c5b42f06163ae5de787f0ac276.zip external_llvm-d26c93d3a8a484c5b42f06163ae5de787f0ac276.tar.gz external_llvm-d26c93d3a8a484c5b42f06163ae5de787f0ac276.tar.bz2 | |
Correctly preserve the input chain for potential tailcall nodes whose
return values are bitcasts.
The chain had previously been being clobbered with the entry node to
the dag, which sometimes caused other code in the function to be
erroneously deleted when tailcall optimization kicked in.
<rdar://problem/13827621>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181696 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/ARM/ARMISelLowering.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Target/ARM/ARMISelLowering.cpp b/lib/Target/ARM/ARMISelLowering.cpp index fd77732..008edbe 100644 --- a/lib/Target/ARM/ARMISelLowering.cpp +++ b/lib/Target/ARM/ARMISelLowering.cpp @@ -2147,7 +2147,7 @@ bool ARMTargetLowering::isUsedByReturnOnly(SDNode *N, SDValue &Chain) const { Copy = *Copy->use_begin(); if (Copy->getOpcode() != ISD::CopyToReg || !Copy->hasNUsesOfValue(1, 0)) return false; - Chain = Copy->getOperand(0); + TCChain = Copy->getOperand(0); } else { return false; } |