From: Bob Wilson <bob.wilson@apple.com>
Date: Thu, 18 Mar 2010 16:52:15 +0000 (+0000)
Subject: Check if function names start with "llvm." before trying to lookup them up as
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=35ee7d6e045dd8488678e4d66f0ee6d052451851;p=oota-llvm.git

Check if function names start with "llvm." before trying to lookup them up as
intrinsics.  The intrinsic lookup code assumes that this check has been done
and assumes the names are at least 6 characters long.  Valgrind complained
about this.  pr6638.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98831 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp b/lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp
index ea9480d7625..34a8d3809ea 100644
--- a/lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp
+++ b/lib/Target/Blackfin/BlackfinIntrinsicInfo.cpp
@@ -53,6 +53,10 @@ std::string BlackfinIntrinsicInfo::getName(unsigned IntrID, const Type **Tys,
 
 unsigned
 BlackfinIntrinsicInfo::lookupName(const char *Name, unsigned Len) const {
+  if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
+      || Name[2] != 'v' || Name[3] != 'm')
+    return 0;  // All intrinsics start with 'llvm.'
+
 #define GET_FUNCTION_RECOGNIZER
 #include "BlackfinGenIntrinsics.inc"
 #undef GET_FUNCTION_RECOGNIZER
diff --git a/lib/Target/MBlaze/MBlazeIntrinsicInfo.cpp b/lib/Target/MBlaze/MBlazeIntrinsicInfo.cpp
index c8faffc8452..4931860912a 100644
--- a/lib/Target/MBlaze/MBlazeIntrinsicInfo.cpp
+++ b/lib/Target/MBlaze/MBlazeIntrinsicInfo.cpp
@@ -57,6 +57,10 @@ std::string MBlazeIntrinsicInfo::getName(unsigned IntrID, const Type **Tys,
 
 unsigned MBlazeIntrinsicInfo::
 lookupName(const char *Name, unsigned Len) const {
+  if (Len < 5 || Name[4] != '.' || Name[0] != 'l' || Name[1] != 'l'
+      || Name[2] != 'v' || Name[3] != 'm')
+    return 0;  // All intrinsics start with 'llvm.'
+
 #define GET_FUNCTION_RECOGNIZER
 #include "MBlazeGenIntrinsics.inc"
 #undef GET_FUNCTION_RECOGNIZER