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Fix bugs, don't do external methods which causes segv.
llvm-svn: 1414
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@ -127,7 +127,8 @@ static bool TransformLoop(cfg::LoopInfo *Loops, cfg::Loop *Loop) {
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#ifdef DEBUG
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cerr << IndVars[i];
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#endif
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if (IV != Cannonical) { // Don't modify the cannonical indvar
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// Don't modify the cannonical indvar or unrecognized indvars...
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if (IV != Cannonical && IV->InductionType != InductionVariable::Unknown) {
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Instruction *Val = IterCount;
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if (!isa<ConstantInt>(IV->Step) || // If the step != 1
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!cast<ConstantInt>(IV->Step)->equalsInt(1)) {
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@ -183,6 +184,8 @@ static bool TransformLoop(cfg::LoopInfo *Loops, cfg::Loop *Loop) {
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}
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bool InductionVariableSimplify::doit(Method *M) {
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if (M->isExternal()) return false;
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// Figure out the loop structure of the method...
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cfg::LoopInfo Loops(M);
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