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Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into

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BasicBlock's removePredecessor routine.  This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
2005-08-04 23:24:19 +00:00
parent f065f05397
commit a83ba0f5c9
9 changed files with 48 additions and 62 deletions
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10
include/llvm/Transforms/Utils/Local.h
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@@ -73,16 +73,6 @@ bool isInstructionTriviallyDead(Instruction *I);
///
bool dceInstruction(BasicBlock::iterator &BBI);
//===----------------------------------------------------------------------===//
// PHI Instruction Simplification
//
/// hasConstantValue - If the specified PHI node always merges together the same
/// value, return the value, otherwise return null.
///
Value *hasConstantValue(PHINode *PN);
//===----------------------------------------------------------------------===//
// Control Flow Graph Restructuring...
//