[llvm] r284989 - Check the number of Args in LibCallsShrinkWrap.

[Rong Xu via llvm-commits]

Author: xur
Date: Mon Oct 24 11:50:12 2016
New Revision: 284989

URL: http://llvm.org/viewvc/llvm-project?rev=284989&view=rev
Log:
Check the number of Args in LibCallsShrinkWrap.

Some library fucntions can have no argument.

Modified:
    llvm/trunk/lib/Transforms/Utils/LibCallsShrinkWrap.cpp

Modified: llvm/trunk/lib/Transforms/Utils/LibCallsShrinkWrap.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Utils/LibCallsShrinkWrap.cpp?rev=284989&r1=284988&r2=284989&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Utils/LibCallsShrinkWrap.cpp (original)
+++ llvm/trunk/lib/Transforms/Utils/LibCallsShrinkWrap.cpp Mon Oct 24 11:50:12 2016
@@ -317,6 +317,8 @@ void LibCallsShrinkWrap::checkCandidate(
   if (!TLI.getLibFunc(*Callee, Func) || !TLI.has(Func))
     return;
 
+  if (CI.getNumArgOperands() == 0)
+    return;
   // TODO: Handle long double in other formats.
   Type *ArgType = CI.getArgOperand(0)->getType();
   if (!(ArgType->isFloatTy() || ArgType->isDoubleTy() ||