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Eliminate ConstantBool::True and ConstantBool::False. Instead, provide

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ConstantBool::getTrue() and ConstantBool::getFalse().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30665 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-09-28 23:35:22 +00:00
parent 850ba99cb6
commit 47811b76ca
11 changed files with 2983 additions and 3981 deletions
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19
lib/Transforms/Scalar/LoopUnswitch.cpp
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@ -173,7 +173,8 @@ bool LoopUnswitch::visitLoop(Loop *L) {
// See if this, or some part of it, is loop invariant. If so, we can
// unswitch on it if we desire.
Value *LoopCond = FindLIVLoopCondition(BI->getCondition(), L, Changed);
if (LoopCond && UnswitchIfProfitable(LoopCond, ConstantBool::True, L)) {
if (LoopCond && UnswitchIfProfitable(LoopCond, ConstantBool::getTrue(),
L)) {
++NumBranches;
return true;
}
@ -196,7 +197,8 @@ bool LoopUnswitch::visitLoop(Loop *L) {
BBI != E; ++BBI)
if (SelectInst *SI = dyn_cast<SelectInst>(BBI)) {
Value *LoopCond = FindLIVLoopCondition(SI->getCondition(), L, Changed);
if (LoopCond && UnswitchIfProfitable(LoopCond, ConstantBool::True, L)) {
if (LoopCond && UnswitchIfProfitable(LoopCond, ConstantBool::getTrue(),
L)) {
++NumSelects;
return true;
}
@ -286,9 +288,9 @@ static bool IsTrivialUnswitchCondition(Loop *L, Value *Cond, Constant **Val = 0,
// side-effects. If so, determine the value of Cond that causes it to do
// this.
if ((LoopExitBB = isTrivialLoopExitBlock(L, BI->getSuccessor(0)))) {
if (Val) *Val = ConstantBool::True;
if (Val) *Val = ConstantBool::getTrue();
} else if ((LoopExitBB = isTrivialLoopExitBlock(L, BI->getSuccessor(1)))) {
if (Val) *Val = ConstantBool::False;
if (Val) *Val = ConstantBool::getFalse();
}
} else if (SwitchInst *SI = dyn_cast<SwitchInst>(HeaderTerm)) {
// If this isn't a switch on Cond, we can't handle it.
@ -488,7 +490,7 @@ static void EmitPreheaderBranchOnCondition(Value *LIC, Constant *Val,
Value *BranchVal = LIC;
if (!isa<ConstantBool>(Val)) {
BranchVal = BinaryOperator::createSetEQ(LIC, Val, "tmp", InsertPt);
} else if (Val != ConstantBool::True) {
} else if (Val != ConstantBool::getTrue()) {
// We want to enter the new loop when the condition is true.
std::swap(TrueDest, FalseDest);
}
@ -964,10 +966,9 @@ void LoopUnswitch::RewriteLoopBodyWithConditionConstant(Loop *L, Value *LIC,
BasicBlock* Split = SplitBlock(Old, SI);
Instruction* OldTerm = Old->getTerminator();
BranchInst* Branch = new BranchInst(Split,
SI->getSuccessor(i),
ConstantBool::True,
OldTerm);
BranchInst* Branch = new BranchInst(Split, SI->getSuccessor(i),
ConstantBool::getTrue(),
OldTerm);
Old->getTerminator()->eraseFromParent();