[IR] Make paramHasAttr to use arg indices instead of attr indices

This avoids the confusing 'CS.paramHasAttr(ArgNo + 1, Foo)' pattern.

Previously we were testing return value attributes with index 0, so I
introduced hasReturnAttr() for that use case.

llvm-svn: 300367

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
index 80fea977f40..4d13b3f4068 100644
--- a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -828,7 +828,7 @@ static bool isFunctionMallocLike(Function *F, const SCCNodeSet &SCCNodes) {
       case Instruction::Call:
       case Instruction::Invoke: {
         CallSite CS(RVI);
-        if (CS.paramHasAttr(0, Attribute::NoAlias))
+        if (CS.hasRetAttr(Attribute::NoAlias))
           break;
         if (CS.getCalledFunction() && SCCNodes.count(CS.getCalledFunction()))
           break;