1 ; RUN: opt < %s -instcombine -S | FileCheck %s
2 ; Verify that the non-default calling conv doesn't prevent the libcall simplification
4 @.str = private unnamed_addr constant [4 x i8] c"abc\00", align 1
6 define arm_aapcscc i32 @_abs(i32 %i) nounwind readnone {
8 %call = tail call arm_aapcscc i32 @abs(i32 %i) nounwind readnone
10 ; CHECK: %[[ISPOS:.*]] = icmp sgt i32 %i, -1
11 ; CHECK: %[[NEG:.*]] = sub i32 0, %i
12 ; CHECK: %[[RET:.*]] = select i1 %[[ISPOS]], i32 %i, i32 %[[NEG]]
13 ; CHECK: ret i32 %[[RET]]
16 declare arm_aapcscc i32 @abs(i32) nounwind readnone
18 define arm_aapcscc i32 @_labs(i32 %i) nounwind readnone {
20 %call = tail call arm_aapcscc i32 @labs(i32 %i) nounwind readnone
22 ; CHECK: %[[ISPOS:.*]] = icmp sgt i32 %i, -1
23 ; CHECK: %[[NEG:.*]] = sub i32 0, %i
24 ; CHECK: %[[RET:.*]] = select i1 %[[ISPOS]], i32 %i, i32 %[[NEG]]
25 ; CHECK: ret i32 %[[RET]]
28 declare arm_aapcscc i32 @labs(i32) nounwind readnone
30 define arm_aapcscc i32 @_strlen1() {
32 %call = tail call arm_aapcscc i32 @strlen(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0))
37 declare arm_aapcscc i32 @strlen(i8*)
39 define arm_aapcscc zeroext i1 @_strlen2(i8* %str) {
41 %call = tail call arm_aapcscc i32 @strlen(i8* %str)
42 %cmp = icmp ne i32 %call, 0
45 ; CHECK: %[[STRLENFIRST:.*]] = load i8, i8* %str
46 ; CHECK: %[[CMP:.*]] = icmp ne i8 %[[STRLENFIRST]], 0
47 ; CHECK: ret i1 %[[CMP]]