commit 15842132d504cc43c849512c37e6efd2471c78b5
author Simon Pilgrim <llvm-dev@redking.me.uk> Tue May 14 10:29:18 2019 +0000
committer Simon Pilgrim <llvm-dev@redking.me.uk> Tue May 14 10:29:18 2019 +0000
tree bb5de5734227b902af0f7e943e11590ae68c584a
parent b0dbc9612ff68d6db5fa6e4308a6538c394970ab

[MemorySanitizer] getMMXVectorTy - assert valid element size. NFCI.

Fixes scan-build warnings

llvm-svn: 360658

llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp

diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
index 8591269..87f73ff 100644
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -2712,6 +2712,8 @@
   // Get an X86_MMX-sized vector type.
   Type *getMMXVectorTy(unsigned EltSizeInBits) {
     const unsigned X86_MMXSizeInBits = 64;
+    assert(EltSizeInBits != 0 && (X86_MMXSizeInBits % EltSizeInBits) == 0 &&
+           "Illegal MMX vector element size");
     return VectorType::get(IntegerType::get(*MS.C, EltSizeInBits),
                            X86_MMXSizeInBits / EltSizeInBits);
   }