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llvm-mirror/test/Transforms/AddReadAttrs/2008-09-03-Mutual.ll
Duncan Sands c2ff9ca568 Add a new pass AddReadAttrs which works out which functions
can get the readnone/readonly attributes, and gives them it.
The plan is to remove markmodref (which did the same thing
by querying GlobalsModRef) and delete the analogous
functionality from GlobalsModRef.

llvm-svn: 56341
2008-09-19 08:17:05 +00:00

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221 B
LLVM

; RUN: llvm-as < %s | opt -addreadattrs | llvm-dis | grep readnone
define i32 @a() {
%tmp = call i32 @b( ) ; <i32> [#uses=1]
ret i32 %tmp
}
define i32 @b() {
%tmp = call i32 @a( ) ; <i32> [#uses=1]
ret i32 %tmp
}