[llvm-commits] [llvm] r98663 - /llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp

[Benjamin Kramer]

Author: d0k
Date: Tue Mar 16 14:36:43 2010
New Revision: 98663

URL: http://llvm.org/viewvc/llvm-project?rev=98663&view=rev
Log:
Mark str[r]chr readonly.

Modified:
    llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp?rev=98663&r1=98662&r2=98663&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/SimplifyLibCalls.cpp Tue Mar 16 14:36:43 2010
@@ -1400,6 +1400,15 @@
           setOnlyReadsMemory(F);
           setDoesNotThrow(F);
           setDoesNotCapture(F, 1);
+        } else if (Name == "strchr" ||
+                   Name == "strrchr") {
+          if (FTy->getNumParams() != 2 ||
+              !FTy->getParamType(0)->isPointerTy() ||
+              !FTy->getParamType(1)->isIntegerTy())
+            continue;
+          setOnlyReadsMemory(F);
+          setDoesNotThrow(F);
+          setDoesNotCapture(F, 1);
         } else if (Name == "strcpy" ||
                    Name == "stpcpy" ||
                    Name == "strcat" ||
@@ -1428,7 +1437,7 @@
         } else if (Name == "strcmp" ||
                    Name == "strspn" ||
                    Name == "strncmp" ||
-                   Name ==" strcspn" ||
+                   Name == "strcspn" ||
                    Name == "strcoll" ||
                    Name == "strcasecmp" ||
                    Name == "strncasecmp") {