Only do switch-to-lookup table transformation when TargetTransformInfo
is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167552 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/SimplifyCFG.cpp b/lib/Transforms/Utils/SimplifyCFG.cpp
index 9823433..b33d0d4 100644
--- a/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -3538,7 +3538,8 @@
const TargetTransformInfo *TTI) {
assert(SI->getNumCases() > 1 && "Degenerate switch?");
- if (TTI && !TTI->getScalarTargetTransformInfo()->shouldBuildLookupTables())
+ // Only build lookup table when we have a target that supports it.
+ if (!TTI || !TTI->getScalarTargetTransformInfo()->shouldBuildLookupTables())
return false;
// FIXME: If the switch is too sparse for a lookup table, perhaps we could