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Fix thinko.

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Starting value of second loop's induction variable can not be lower 
then starting value of original loop's induction variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41280 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2007-08-22 18:07:47 +00:00
parent 9f30e22930
commit ea0fa97334
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/Scalar/LoopIndexSplit.cpp
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@ -748,7 +748,7 @@ bool LoopIndexSplit::splitLoop(SplitInfo &SD) {
//[*] Calculate True loop's new Exit Value in loop preheader.
// TL_ExitValue = min(SplitValue, ExitValue)
//[*] Calculate False loop's new Start Value in loop preheader.
// FL_StartValue = min(SplitValue, TrueLoop.StartValue)
// FL_StartValue = max(SplitValue, TrueLoop.StartValue)
Value *TL_ExitValue = NULL;
Value *FL_StartValue = NULL;
if (isa<ConstantInt>(SD.SplitValue)) {
@ -770,8 +770,8 @@ bool LoopIndexSplit::splitLoop(SplitInfo &SD) {
ICmpInst::ICMP_SLT : ICmpInst::ICMP_ULT,
SD.SplitValue, StartValue, "lsplit.sv",
TL_PHTerminator);
FL_StartValue = new SelectInst(C2, SD.SplitValue, StartValue,
"lsplit.sv", TL_Preheader->getTerminator());
FL_StartValue = new SelectInst(C2, StartValue, SD.SplitValue,
"lsplit.sv", TL_PHTerminator);
}
//[*] Clone loop. Avoid true destination of split condition and