mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-02 00:42:52 +01:00
36db5853cb
to work out (in a very simplistic way) which function arguments (pointer arguments only) are only dereferenced and so do not escape. Mark such arguments 'nocapture'. llvm-svn: 61525
19 lines
325 B
LLVM
19 lines
325 B
LLVM
; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | grep readnone | count 4
|
|
@x = global i32 0
|
|
|
|
declare i32 @e() readnone
|
|
|
|
define i32 @f() {
|
|
%tmp = call i32 @e( ) ; <i32> [#uses=1]
|
|
ret i32 %tmp
|
|
}
|
|
|
|
define i32 @g() readonly {
|
|
ret i32 0
|
|
}
|
|
|
|
define i32 @h() readnone {
|
|
%tmp = load i32* @x ; <i32> [#uses=1]
|
|
ret i32 %tmp
|
|
}
|