From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Wed, 22 May 2019 13:02:19 +0000 (+0000)
Subject: [CGOpenMPRuntime] emitX86DeclareSimdFunction - assert simdlen/cdtsize is not zero... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=dc1665e0c4c1261540d881b75c8b97d9121c6eed;p=clang

[CGOpenMPRuntime] emitX86DeclareSimdFunction - assert simdlen/cdtsize is not zero. NFCI.

Fixes scan-build division by zero warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@361379 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGOpenMPRuntime.cpp b/lib/CodeGen/CGOpenMPRuntime.cpp
index 0897b4765e..651cca4993 100644
--- a/lib/CodeGen/CGOpenMPRuntime.cpp
+++ b/lib/CodeGen/CGOpenMPRuntime.cpp
@@ -9774,8 +9774,9 @@ emitX86DeclareSimdFunction(const FunctionDecl *FD, llvm::Function *Fn,
       llvm::raw_svector_ostream Out(Buffer);
       Out << "_ZGV" << Data.ISA << Mask;
       if (!VLENVal) {
-        Out << llvm::APSInt::getUnsigned(Data.VecRegSize /
-                                         evaluateCDTSize(FD, ParamAttrs));
+        unsigned NumElts = evaluateCDTSize(FD, ParamAttrs);
+        assert(NumElts && "Non-zero simdlen/cdtsize expected");
+        Out << llvm::APSInt::getUnsigned(Data.VecRegSize / NumElts);
       } else {
         Out << VLENVal;
       }