commit 04949faf69ad46ed97d7276a3a7d7e762f5b8f77
author Sanjay Patel <spatel@rotateright.com> Fri Sep 23 18:44:09 2016 +0000
committer Sanjay Patel <spatel@rotateright.com> Fri Sep 23 18:44:09 2016 +0000
tree 5701a6697b053e223f76958882109ecb31ceaefc
parent a498f0ec934cd4f68c0b62afee2c43e110961ee4

[TLI] isdigit / isascii / toascii param type should match return type (PR30484)

We crash in LibCallSimplifier if we don't check the validity of the function signature properly.

llvm-svn: 282278

llvm/lib/Analysis/TargetLibraryInfo.cpp

diff --git a/llvm/lib/Analysis/TargetLibraryInfo.cpp b/llvm/lib/Analysis/TargetLibraryInfo.cpp
index 98f2321..988ccaa 100644
--- a/llvm/lib/Analysis/TargetLibraryInfo.cpp
+++ b/llvm/lib/Analysis/TargetLibraryInfo.cpp
@@ -957,11 +957,14 @@
   case LibFunc::ffs:
   case LibFunc::ffsl:
   case LibFunc::ffsll:
+    return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
+            FTy.getParamType(0)->isIntegerTy());
+
   case LibFunc::isdigit:
   case LibFunc::isascii:
   case LibFunc::toascii:
     return (NumParams == 1 && FTy.getReturnType()->isIntegerTy(32) &&
-            FTy.getParamType(0)->isIntegerTy());
+            FTy.getReturnType() == FTy.getParamType(0));
 
   case LibFunc::fls:
   case LibFunc::flsl: