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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 | f78b5952c30b69c764ff48270eb56540a3fa56f3 (patch) | |
| tree | e62f9222f81b543be3c04e2cbf3004ebd033f509 /lib/CodeGen/TailDuplication.cpp | |
| parent | bbdffa9ab0597b64689c51f2c4a87a781f3bf79d (diff) | |
Revert r133607. This is causing failures in the Clang gccTestSuite.
Specifically, gcc.c-torture/compile/pr21356.c.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133646 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/TailDuplication.cpp')
| -rw-r--r-- | lib/CodeGen/TailDuplication.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/CodeGen/TailDuplication.cpp b/lib/CodeGen/TailDuplication.cpp index 6e832d99ef..d16369a4ca 100644 --- a/lib/CodeGen/TailDuplication.cpp +++ b/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 |