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author | Dale Johannesen <dalej@apple.com> | 2010-04-02 01:38:09 +0000 |
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committer | Dale Johannesen <dalej@apple.com> | 2010-04-02 01:38:09 +0000 |
commit | 93d6a7e9c21204c52d6efec6c672163e7de79660 (patch) | |
tree | 28f6ac48c327e656e147cb2c4b2b1ecf73ce3dbe /lib/Target/PowerPC/PPCInstrInfo.cpp | |
parent | ae1d41c8ae243329c6f0dfcd6abd33a7f89bfa7b (diff) | |
download | llvm-93d6a7e9c21204c52d6efec6c672163e7de79660.tar.gz llvm-93d6a7e9c21204c52d6efec6c672163e7de79660.tar.bz2 llvm-93d6a7e9c21204c52d6efec6c672163e7de79660.tar.xz |
Teach AnalyzeBranch, RemoveBranch and the branch
folder to be tolerant of debug info following the
branch(es) at the end of a block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100168 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCInstrInfo.cpp')
-rw-r--r-- | lib/Target/PowerPC/PPCInstrInfo.cpp | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCInstrInfo.cpp b/lib/Target/PowerPC/PPCInstrInfo.cpp index 9895bea122..82c637efaf 100644 --- a/lib/Target/PowerPC/PPCInstrInfo.cpp +++ b/lib/Target/PowerPC/PPCInstrInfo.cpp @@ -213,7 +213,15 @@ bool PPCInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB, bool AllowModify) const { // If the block has no terminators, it just falls into the block after it. MachineBasicBlock::iterator I = MBB.end(); - if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) + if (I == MBB.begin()) + return false; + --I; + while (I->isDebugValue()) { + if (I == MBB.begin()) + return false; + --I; + } + if (!isUnpredicatedTerminator(I)) return false; // Get the last instruction in the block. @@ -281,6 +289,11 @@ unsigned PPCInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const { MachineBasicBlock::iterator I = MBB.end(); if (I == MBB.begin()) return 0; --I; + while (I->isDebugValue()) { + if (I == MBB.begin()) + return 0; + --I; + } if (I->getOpcode() != PPC::B && I->getOpcode() != PPC::BCC) return 0; |