1 ; RUN: opt < %s -instcombine -S | FileCheck %s 2 ; Verify that the non-default calling conv doesn't prevent the libcall simplification 3 4 @.str = private unnamed_addr constant [4 x i8] c"abc\00", align 1 5 6 define arm_aapcscc i32 @_abs(i32 %i) nounwind readnone { 7 ; CHECK: _abs 8 %call = tail call arm_aapcscc i32 @abs(i32 %i) nounwind readnone 9 ret i32 %call 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]] 14 } 15 16 declare arm_aapcscc i32 @abs(i32) nounwind readnone 17 18 define arm_aapcscc i32 @_labs(i32 %i) nounwind readnone { 19 ; CHECK: _labs 20 %call = tail call arm_aapcscc i32 @labs(i32 %i) nounwind readnone 21 ret i32 %call 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]] 26 } 27 28 declare arm_aapcscc i32 @labs(i32) nounwind readnone 29 30 define arm_aapcscc i32 @_strlen1() { 31 ; CHECK: _strlen1 32 %call = tail call arm_aapcscc i32 @strlen(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0)) 33 ret i32 %call 34 ; CHECK: ret i32 3 35 } 36 37 declare arm_aapcscc i32 @strlen(i8*) 38 39 define arm_aapcscc zeroext i1 @_strlen2(i8* %str) { 40 ; CHECK: _strlen2 41 %call = tail call arm_aapcscc i32 @strlen(i8* %str) 42 %cmp = icmp ne i32 %call, 0 43 ret i1 %cmp 44 45 ; CHECK: %[[STRLENFIRST:.*]] = load i8, i8* %str 46 ; CHECK: %[[CMP:.*]] = icmp ne i8 %[[STRLENFIRST]], 0 47 ; CHECK: ret i1 %[[CMP]] 48 } 49
