1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
; Test that the StrNCmpOptimizer works correctly
; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | not grep 'call.*strncmp'
declare int %strncmp(sbyte*,sbyte*,int)
declare int %puts(sbyte*)
%hello = constant [6 x sbyte] c"hello\00"
%hell = constant [5 x sbyte] c"hell\00"
%null = constant [1 x sbyte] c"\00"
implementation ; Functions:
int %main () {
%hello_p = getelementptr [6 x sbyte]* %hello, int 0, int 0
%hell_p = getelementptr [5 x sbyte]* %hell, int 0, int 0
%null_p = getelementptr [1 x sbyte]* %null, int 0, int 0
%temp1 = call int %strncmp(sbyte* %hello_p, sbyte* %hello_p,int 5)
%temp2 = call int %strncmp(sbyte* %null_p, sbyte* %null_p,int 0)
%temp3 = call int %strncmp(sbyte* %hello_p, sbyte* %null_p,int 0)
%temp4 = call int %strncmp(sbyte* %null_p, sbyte* %hello_p,int 0)
%temp5 = call int %strncmp(sbyte* %hell_p, sbyte* %hello_p,int 4)
%rslt1 = add int %temp1, %temp2
%rslt2 = add int %rslt1, %temp3
%rslt3 = add int %rslt2, %temp4
%rslt4 = add int %rslt3, %temp5
ret int %rslt4
}
|
