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Ensure that HandlePHINodesInSuccessorBlocks is run for all blocks,

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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
This commit is contained in:
Dan Gohman 2008-09-02 20:17:56 +00:00
parent 21dbb99964
commit d2ff647964
1 changed files with 9 additions and 3 deletions
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12
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -5536,7 +5536,7 @@ void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB,
}
// Handle PHI nodes in successor blocks.
if (Begin != End && End == LLVMBB->end())
if (End == LLVMBB->end())
HandlePHINodesInSuccessorBlocks(LLVMBB);
// Make sure the root of the DAG is up-to-date.
@ -5798,8 +5798,14 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn, MachineFunction &MF) {
}
}
if (Begin != End)
SelectBasicBlock(LLVMBB, Begin, End);
// Run SelectionDAG instruction selection on the remainder of the block
// not handled by FastISel. If FastISel is not run, this is the entire
// block. If FastISel is run and happens to handle all of the
// LLVM Instructions in the block, [Begin,End) will be an empty range,
// but we still need to run this so that
// HandlePHINodesInSuccessorBlocks is called and any resulting code
// is emitted.
SelectBasicBlock(LLVMBB, Begin, End);
FinishBasicBlock();
}