1 ; Test that the memcmpOptimizer works correctly
2 ; RUN: opt < %s -simplify-libcalls -S | not grep {call.*memcmp}
4 @h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=0]
5 @hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=0]
6 @hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=0]
8 declare i32 @memcmp(i8*, i8*, i32)
10 define void @test(i8* %P, i8* %Q, i32 %N, i32* %IP, i1* %BP) {
11 %A = call i32 @memcmp( i8* %P, i8* %P, i32 %N ) ; <i32> [#uses=1]
12 volatile store i32 %A, i32* %IP
13 %B = call i32 @memcmp( i8* %P, i8* %Q, i32 0 ) ; <i32> [#uses=1]
14 volatile store i32 %B, i32* %IP
15 %C = call i32 @memcmp( i8* %P, i8* %Q, i32 1 ) ; <i32> [#uses=1]
16 volatile store i32 %C, i32* %IP
17 %D = call i32 @memcmp( i8* %P, i8* %Q, i32 2 ) ; <i32> [#uses=1]
18 %E = icmp eq i32 %D, 0 ; <i1> [#uses=1]
19 volatile store i1 %E, i1* %BP