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| author | Chad Rosier <mcrosier@apple.com> | 2011-06-22 21:13:23 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2011-06-22 21:13:23 +0000 |
| commit | cb7cfa495455ae871f54e93f394c9298b0ccd0db (patch) | |
| tree | 86e26ecc2604719acb03eb4ab1a262410820e363 /llvm/lib/CodeGen | |
| parent | eb872e0471ac35b303121369e286021fd30e2f43 (diff) | |
| download | bcm5719-llvm-cb7cfa495455ae871f54e93f394c9298b0ccd0db.tar.gz bcm5719-llvm-cb7cfa495455ae871f54e93f394c9298b0ccd0db.zip | |
Revert r133607. This is causing failures in the Clang gccTestSuite.
Specifically, gcc.c-torture/compile/pr21356.c.
llvm-svn: 133646
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/TailDuplication.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/TailDuplication.cpp b/llvm/lib/CodeGen/TailDuplication.cpp index 6e832d99ef9..d16369a4ca6 100644 --- a/llvm/lib/CodeGen/TailDuplication.cpp +++ b/llvm/lib/CodeGen/TailDuplication.cpp @@ -568,9 +568,9 @@ bool TailDuplicatePass::isSimpleBB(MachineBasicBlock *TailBB) { if (TailBB->succ_size() != 1) return false; - MachineBasicBlock::iterator I = TailBB->begin(); + MachineBasicBlock::iterator I = TailBB->getFirstNonPHI(); MachineBasicBlock::iterator E = TailBB->end(); - while (I != E && I->isDebugValue()) + while (I->isDebugValue() && I != E) ++I; if (I == E) return true; @@ -712,7 +712,7 @@ TailDuplicatePass::TailDuplicate(MachineBasicBlock *TailBB, MachineFunction &MF, DenseSet<unsigned> UsedByPhi; getRegsUsedByPHIs(*TailBB, &UsedByPhi); - if (isSimpleBB(TailBB)) + if (0 && isSimpleBB(TailBB)) return duplicateSimpleBB(TailBB, TDBBs, UsedByPhi, Copies); // Iterate through all the unique predecessors and tail-duplicate this |
