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SimplifyCFG: Don't assume non-null ScalarTargetTransformInfo.

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Patch by Pekka Jääskeläinen!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168176 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hans Wennborg 2012-11-16 18:22:08 +00:00
parent 1358841e91
commit 6eac2ba4de
1 changed files with 2 additions and 1 deletions
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lib/Transforms/Utils/SimplifyCFG.cpp
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@ -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