Teach LSR to avoid calling SplitCriticalEdge on edges with indirectbr.

llvm-svn: 86193
2009-11-05 23:34:59 +00:00 · 2009-11-05 23:34:59 +00:00 · a1bf0c0acc
parent 98693a3ac2
commit a1bf0c0acc
1 changed files with 1 additions and 0 deletions
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@ -490,6 +490,7 @@ void BasedUser::RewriteInstructionToUseNewBase(const SCEV *const &NewBase,
        // is the canonical backedge for this loop, as this can make some
        // inserted code be in an illegal position.
        if (e != 1 && PHIPred->getTerminator()->getNumSuccessors() > 1 &&
+            !isa<IndirectBrInst>(PHIPred->getTerminator()) &&
            (PN->getParent() != L->getHeader() || !L->contains(PHIPred))) {

          // First step, split the critical edge.