1 ; Test that the memcmpOptimizer works correctly
2 ; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | \
3 ; RUN: not grep {call.*memcmp}
4 ; RUN: llvm-as < %s | opt -simplify-libcalls -disable-output
6 @h = constant [2 x i8] c"h\00" ; <[2 x i8]*> [#uses=0]
7 @hel = constant [4 x i8] c"hel\00" ; <[4 x i8]*> [#uses=0]
8 @hello_u = constant [8 x i8] c"hello_u\00" ; <[8 x i8]*> [#uses=0]
10 declare i32 @memcmp(i8*, i8*, i32)
12 define void @test(i8* %P, i8* %Q, i32 %N, i32* %IP, i1* %BP) {
13 %A = call i32 @memcmp( i8* %P, i8* %P, i32 %N ) ; <i32> [#uses=1]
14 volatile store i32 %A, i32* %IP
15 %B = call i32 @memcmp( i8* %P, i8* %Q, i32 0 ) ; <i32> [#uses=1]
16 volatile store i32 %B, i32* %IP
17 %C = call i32 @memcmp( i8* %P, i8* %Q, i32 1 ) ; <i32> [#uses=1]
18 volatile store i32 %C, i32* %IP
19 %D = call i32 @memcmp( i8* %P, i8* %Q, i32 2 ) ; <i32> [#uses=1]
20 %E = icmp eq i32 %D, 0 ; <i1> [#uses=1]
21 volatile store i1 %E, i1* %BP