xref: /aosp_15_r20/external/llvm/test/Transforms/FunctionAttrs/2008-09-03-ReadNone.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: opt < %s -basicaa -functionattrs -S | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker@x = global i32 0
3*9880d681SAndroid Build Coastguard Worker
4*9880d681SAndroid Build Coastguard Worker; CHECK: declare i32 @e() #0
5*9880d681SAndroid Build Coastguard Workerdeclare i32 @e() readnone
6*9880d681SAndroid Build Coastguard Worker
7*9880d681SAndroid Build Coastguard Worker; CHECK: define i32 @f() #0
8*9880d681SAndroid Build Coastguard Workerdefine i32 @f() {
9*9880d681SAndroid Build Coastguard Worker	%tmp = call i32 @e( )		; <i32> [#uses=1]
10*9880d681SAndroid Build Coastguard Worker	ret i32 %tmp
11*9880d681SAndroid Build Coastguard Worker}
12*9880d681SAndroid Build Coastguard Worker
13*9880d681SAndroid Build Coastguard Worker; CHECK: define i32 @g() #1
14*9880d681SAndroid Build Coastguard Workerdefine i32 @g() readonly {
15*9880d681SAndroid Build Coastguard Worker	ret i32 0
16*9880d681SAndroid Build Coastguard Worker}
17*9880d681SAndroid Build Coastguard Worker
18*9880d681SAndroid Build Coastguard Worker; CHECK: define i32 @h() #1
19*9880d681SAndroid Build Coastguard Workerdefine i32 @h() readnone {
20*9880d681SAndroid Build Coastguard Worker	%tmp = load i32, i32* @x		; <i32> [#uses=1]
21*9880d681SAndroid Build Coastguard Worker	ret i32 %tmp
22*9880d681SAndroid Build Coastguard Worker}
23*9880d681SAndroid Build Coastguard Worker
24*9880d681SAndroid Build Coastguard Worker; CHECK: attributes #0 = { readnone }
25*9880d681SAndroid Build Coastguard Worker; CHECK: attributes #1 = { norecurse readnone }
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