Fix bugs, don't do external methods which causes segv.
llvm-svn: 1414
diff --git a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
index a6e0bd1..3b64756 100644
--- a/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/llvm/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -127,7 +127,8 @@
#ifdef DEBUG
cerr << IndVars[i];
#endif
- if (IV != Cannonical) { // Don't modify the cannonical indvar
+ // Don't modify the cannonical indvar or unrecognized indvars...
+ if (IV != Cannonical && IV->InductionType != InductionVariable::Unknown) {
Instruction *Val = IterCount;
if (!isa<ConstantInt>(IV->Step) || // If the step != 1
!cast<ConstantInt>(IV->Step)->equalsInt(1)) {
@@ -183,6 +184,8 @@
}
bool InductionVariableSimplify::doit(Method *M) {
+ if (M->isExternal()) return false;
+
// Figure out the loop structure of the method...
cfg::LoopInfo Loops(M);