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Rename loop preheaders pass to loop simplify

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9061 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-10-12 21:52:28 +00:00
parent d59128ad36
commit 98bf436e2e
5 changed files with 13 additions and 11 deletions
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12
include/llvm/Transforms/Scalar.h
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@ -232,14 +232,14 @@ void SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P = 0);
//===----------------------------------------------------------------------===//
//
// LoopPreheaders pass - Insert Pre-header blocks into the CFG for every
// function in the module. This pass updates dominator information, loop
// information, and does not add critical edges to the CFG.
// LoopSimplify pass - Insert Pre-header blocks into the CFG for every function
// in the module. This pass updates dominator information, loop information,
// and does not add critical edges to the CFG.
//
// AU.addRequiredID(LoopPreheadersID);
// AU.addRequiredID(LoopSimplifyID);
//
Pass *createLoopPreheaderInsertionPass();
extern const PassInfo *LoopPreheadersID;
Pass *createLoopSimplifyPass();
extern const PassInfo *LoopSimplifyID;
//===----------------------------------------------------------------------===//
//

2
lib/Transforms/Scalar/IndVarSimplify.cpp
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@ -199,7 +199,7 @@ namespace {
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<LoopInfo>();
AU.addRequiredID(LoopPreheadersID);
AU.addRequiredID(LoopSimplifyID);
AU.setPreservesCFG();
}
};

2
lib/Transforms/Scalar/LICM.cpp
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@ -53,7 +53,7 @@ namespace {
///
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesCFG();
AU.addRequiredID(LoopPreheadersID);
AU.addRequiredID(LoopSimplifyID);
AU.addRequired<LoopInfo>();
AU.addRequired<DominatorTree>();
AU.addRequired<DominanceFrontier>(); // For scalar promotion (mem2reg)

4
lib/Transforms/Utils/BreakCriticalEdges.cpp
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@ -27,7 +27,9 @@ namespace {
AU.addPreserved<ImmediateDominators>();
AU.addPreserved<DominatorTree>();
AU.addPreserved<DominanceFrontier>();
AU.addPreservedID(LoopPreheadersID); // No preheaders deleted.
// No loop canonicalization guarantees are broken by this pass.
AU.addPreservedID(LoopSimplifyID);
}
};

4
lib/Transforms/Utils/LoopSimplify.cpp
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@ -66,8 +66,8 @@ namespace {
}
// Publically exposed interface to pass...
const PassInfo *LoopPreheadersID = X.getPassInfo();
Pass *createLoopPreheaderInsertionPass() { return new LoopSimplify(); }
const PassInfo *LoopSimplifyID = X.getPassInfo();
Pass *createLoopSimplifyPass() { return new LoopSimplify(); }
/// runOnFunction - Run down all loops in the CFG (recursively, but we could do