Now Attributes are divided in three groups

- return attributes - inreg, zext and sext
- parameter attributes
- function attributes - nounwind, readonly, readnone, noreturn

Return attributes use 0 as the index.
Function attributes use ~0U as the index.

This patch requires corresponding changes in llvm-gcc and clang.

llvm-svn: 56704

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Transforms/IPO/AddReadAttrs.cpp b/llvm/lib/Transforms/IPO/AddReadAttrs.cpp
index 4e0677b0d8e..897548bad5b 100644
--- a/llvm/lib/Transforms/IPO/AddReadAttrs.cpp
+++ b/llvm/lib/Transforms/IPO/AddReadAttrs.cpp
@@ -105,10 +105,10 @@ bool AddReadAttrs::runOnSCC(const std::vector<CallGraphNode *> &SCC) {
     MadeChange = true;
 
     // Clear out any existing attributes.
-    F->removeAttribute(0, Attribute::ReadOnly | Attribute::ReadNone);
+    F->removeAttribute(~0, Attribute::ReadOnly | Attribute::ReadNone);
 
     // Add in the new attribute.
-    F->addAttribute(0, ReadsMemory ? Attribute::ReadOnly : Attribute::ReadNone);
+    F->addAttribute(~0, ReadsMemory ? Attribute::ReadOnly : Attribute::ReadNone);
 
     if (ReadsMemory)
       NumReadOnly++;