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| author | Chris Lattner <sabre@nondot.org> | 2004-02-29 22:01:51 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-02-29 22:01:51 +0000 |
| commit | 92bc3bc11c2d439264b1cf9e7fc5bc79f4215a54 (patch) | |
| tree | 1968b15fc7c2f48e6d83ae0847281803d73eaa21 /lib/CodeGen/LiveVariables.cpp | |
| parent | c81295ab24ab3ea3d8203f4b798fa05c1b602a96 (diff) | |
| download | llvm-92bc3bc11c2d439264b1cf9e7fc5bc79f4215a54.tar.gz llvm-92bc3bc11c2d439264b1cf9e7fc5bc79f4215a54.tar.bz2 llvm-92bc3bc11c2d439264b1cf9e7fc5bc79f4215a54.tar.xz | |
Add an assert
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12010 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveVariables.cpp')
| -rw-r--r-- | lib/CodeGen/LiveVariables.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp index 35c64e2548..10c215885f 100644 --- a/lib/CodeGen/LiveVariables.cpp +++ b/lib/CodeGen/LiveVariables.cpp @@ -277,7 +277,9 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &MF) { // PHI nodes are guaranteed to be at the top of the block... for (MachineBasicBlock::iterator MI = Succ->begin(), ME = Succ->end(); MI != ME && MI->getOpcode() == TargetInstrInfo::PHI; ++MI) { - for (unsigned i = 1; ; i += 2) + for (unsigned i = 1; ; i += 2) { + assert(MI->getNumOperands() > i+1 && + "Didn't find an entry for our predecessor??"); if (MI->getOperand(i+1).getMachineBasicBlock() == MBB) { MachineOperand &MO = MI->getOperand(i); if (!MO.getVRegValueOrNull()) { @@ -288,6 +290,7 @@ bool LiveVariables::runOnMachineFunction(MachineFunction &MF) { break; // Found the PHI entry for this block... } } + } } } |