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For PR1043:

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Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33073 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Zhou Sheng
2007-01-11 12:24:14 +00:00
parent 057809ac1c
commit 6b6b6ef167
43 changed files with 1974 additions and 1868 deletions
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lib/Transforms/Utils/SimplifyCFG.cpp
+8 -5
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@@ -968,12 +968,14 @@ static bool FoldCondBranchOnPHI(BranchInst *BI) {
// Okay, this is a simple enough basic block. See if any phi values are
// constants.
for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i)
if (ConstantBool *CB = dyn_cast<ConstantBool>(PN->getIncomingValue(i))) {
for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) {
ConstantInt *CB;
if ((CB = dyn_cast<ConstantInt>(PN->getIncomingValue(i))) &&
CB->getType() == Type::BoolTy) {
// Okay, we now know that all edges from PredBB should be revectored to
// branch to RealDest.
BasicBlock *PredBB = PN->getIncomingBlock(i);
BasicBlock *RealDest = BI->getSuccessor(!CB->getValue());
BasicBlock *RealDest = BI->getSuccessor(!CB->getBoolValue());
if (RealDest == BB) continue; // Skip self loops.
@@ -1037,6 +1039,7 @@ static bool FoldCondBranchOnPHI(BranchInst *BI) {
// Recurse, simplifying any other constants.
return FoldCondBranchOnPHI(BI) | true;
}
}
return false;
}
@@ -1506,7 +1509,7 @@ bool llvm::SimplifyCFG(BasicBlock *BB) {
if (BB->getSinglePredecessor()) {
// Turn this into a branch on constant.
bool CondIsTrue = PBI->getSuccessor(0) == BB;
BI->setCondition(ConstantBool::get(CondIsTrue));
BI->setCondition(ConstantInt::get(CondIsTrue));
return SimplifyCFG(BB); // Nuke the branch on constant.
}
@@ -1522,7 +1525,7 @@ bool llvm::SimplifyCFG(BasicBlock *BB) {
PBI->getCondition() == BI->getCondition() &&
PBI->getSuccessor(0) != PBI->getSuccessor(1)) {
bool CondIsTrue = PBI->getSuccessor(0) == BB;
NewPN->addIncoming(ConstantBool::get(CondIsTrue), *PI);
NewPN->addIncoming(ConstantInt::get(CondIsTrue), *PI);
} else {
NewPN->addIncoming(BI->getCondition(), *PI);
}