SimplifyCFG: Don't assume non-null ScalarTargetTransformInfo.

Patch by Pekka Jääskeläinen!

llvm-svn: 168176

diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index 4c14aa6..6c34eed 100644 (file)
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -3539,7 +3539,8 @@ static bool SwitchToLookupTable(SwitchInst *SI,
   assert(SI->getNumCases() > 1 && "Degenerate switch?");
 
   // Only build lookup table when we have a target that supports it.
-  if (!TTI || !TTI->getScalarTargetTransformInfo()->shouldBuildLookupTables())
+  if (!TTI || !TTI->getScalarTargetTransformInfo() ||
+      !TTI->getScalarTargetTransformInfo()->shouldBuildLookupTables())
     return false;
 
   // FIXME: If the switch is too sparse for a lookup table, perhaps we could