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Follow up to r114630. Do not optimize away unconditional branch following a conditional one.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114634 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-09-23 07:18:35 +00:00
parent dd3a41a6b3
commit b8db1981b8
1 changed files with 4 additions and 6 deletions
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10
lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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@ -1617,9 +1617,8 @@ void SelectionDAGBuilder::visitBitTestHeader(BitTestBlock &B,
MVT::Other, CopyTo, RangeCmp, MVT::Other, CopyTo, RangeCmp,
DAG.getBasicBlock(B.Default)); DAG.getBasicBlock(B.Default));
if (MBB != NextBlock) BrRange = DAG.getNode(ISD::BR, getCurDebugLoc(), MVT::Other, CopyTo,
BrRange = DAG.getNode(ISD::BR, getCurDebugLoc(), MVT::Other, CopyTo, DAG.getBasicBlock(MBB));
DAG.getBasicBlock(MBB));
DAG.setRoot(BrRange); DAG.setRoot(BrRange);
} }
@ -1672,9 +1671,8 @@ void SelectionDAGBuilder::visitBitTestCase(MachineBasicBlock* NextMBB,
if (++BBI != FuncInfo.MF->end()) if (++BBI != FuncInfo.MF->end())
NextBlock = BBI; NextBlock = BBI;
if (NextMBB != NextBlock) BrAnd = DAG.getNode(ISD::BR, getCurDebugLoc(), MVT::Other, BrAnd,
BrAnd = DAG.getNode(ISD::BR, getCurDebugLoc(), MVT::Other, BrAnd, DAG.getBasicBlock(NextMBB));
DAG.getBasicBlock(NextMBB));
DAG.setRoot(BrAnd); DAG.setRoot(BrAnd);
} }