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Ensure that HandlePHINodesInSuccessorBlocks is run for all blocks,
even in FastISel mode in the case where FastISel successfully selects all the instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55641 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -5536,7 +5536,7 @@ void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB,
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}
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// Handle PHI nodes in successor blocks.
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if (Begin != End && End == LLVMBB->end())
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if (End == LLVMBB->end())
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HandlePHINodesInSuccessorBlocks(LLVMBB);
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// Make sure the root of the DAG is up-to-date.
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@ -5798,8 +5798,14 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn, MachineFunction &MF) {
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}
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}
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if (Begin != End)
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SelectBasicBlock(LLVMBB, Begin, End);
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// Run SelectionDAG instruction selection on the remainder of the block
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// not handled by FastISel. If FastISel is not run, this is the entire
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// block. If FastISel is run and happens to handle all of the
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// LLVM Instructions in the block, [Begin,End) will be an empty range,
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// but we still need to run this so that
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// HandlePHINodesInSuccessorBlocks is called and any resulting code
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// is emitted.
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SelectBasicBlock(LLVMBB, Begin, End);
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FinishBasicBlock();
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}
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