1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
|
; Test that the memcmpOptimizer works correctly
; RUN: llvm-as < %s | opt -simplify-libcalls | llvm-dis | not grep 'call.*memcmp' &&
; RUN: llvm-as < %s | opt -simplify-libcalls -disable-output
declare int %memcmp(sbyte*,sbyte*,int)
%h = constant [2 x sbyte] c"h\00"
%hel = constant [4 x sbyte] c"hel\00"
%hello_u = constant [8 x sbyte] c"hello_u\00"
implementation
void %test(sbyte *%P, sbyte *%Q, int %N, int* %IP, bool *%BP) {
%A = call int %memcmp(sbyte *%P, sbyte* %P, int %N)
volatile store int %A, int* %IP
%B = call int %memcmp(sbyte *%P, sbyte* %Q, int 0)
volatile store int %B, int* %IP
%C = call int %memcmp(sbyte *%P, sbyte* %Q, int 1)
volatile store int %C, int* %IP
%D = call int %memcmp(sbyte *%P, sbyte* %Q, int 2)
%E = seteq int %D, 0
volatile store bool %E, bool* %BP
ret void
}
|
