Fix a bug that was found by building clang with -fsanitize.
I introduced it in r166785. PR14291.
If TD is unavailable use getScalarSizeInBits, but don't optimize
pointers or vectors of pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170586 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ValueTracking.cpp b/lib/Analysis/ValueTracking.cpp
index 64e132e..5421cbe 100644
--- a/lib/Analysis/ValueTracking.cpp
+++ b/lib/Analysis/ValueTracking.cpp
@@ -433,7 +433,12 @@
unsigned SrcBitWidth;
// Note that we handle pointer operands here because of inttoptr/ptrtoint
// which fall through here.
- SrcBitWidth = TD->getTypeSizeInBits(SrcTy->getScalarType());
+ if(TD) {
+ SrcBitWidth = TD->getTypeSizeInBits(SrcTy->getScalarType());
+ } else {
+ SrcBitWidth = SrcTy->getScalarSizeInBits();
+ if (!SrcBitWidth) return;
+ }
assert(SrcBitWidth && "SrcBitWidth can't be zero");
KnownZero = KnownZero.zextOrTrunc(SrcBitWidth);