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; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
; These tests could be improved by 'movs r0, #0' being rematerialized below the
; test as 'mov.w r0, #0'.
define i1 @f1(i32 %a, i32 %b) {
%nb = sub i32 0, %b
%tmp = icmp ne i32 %a, %nb
ret i1 %tmp
}
; CHECK: f1:
; CHECK: cmn {{.*}}, r1
define i1 @f2(i32 %a, i32 %b) {
%nb = sub i32 0, %b
%tmp = icmp ne i32 %nb, %a
ret i1 %tmp
}
; CHECK: f2:
; CHECK: cmn {{.*}}, r1
define i1 @f3(i32 %a, i32 %b) {
%nb = sub i32 0, %b
%tmp = icmp eq i32 %a, %nb
ret i1 %tmp
}
; CHECK: f3:
; CHECK: cmn {{.*}}, r1
define i1 @f4(i32 %a, i32 %b) {
%nb = sub i32 0, %b
%tmp = icmp eq i32 %nb, %a
ret i1 %tmp
}
; CHECK: f4:
; CHECK: cmn {{.*}}, r1
define i1 @f5(i32 %a, i32 %b) {
%tmp = shl i32 %b, 5
%nb = sub i32 0, %tmp
%tmp1 = icmp eq i32 %nb, %a
ret i1 %tmp1
}
; CHECK: f5:
; CHECK: cmn.w {{.*}}, r1, lsl #5
define i1 @f6(i32 %a, i32 %b) {
%tmp = lshr i32 %b, 6
%nb = sub i32 0, %tmp
%tmp1 = icmp ne i32 %nb, %a
ret i1 %tmp1
}
; CHECK: f6:
; CHECK: cmn.w {{.*}}, r1, lsr #6
define i1 @f7(i32 %a, i32 %b) {
%tmp = ashr i32 %b, 7
%nb = sub i32 0, %tmp
%tmp1 = icmp eq i32 %a, %nb
ret i1 %tmp1
}
; CHECK: f7:
; CHECK: cmn.w {{.*}}, r1, asr #7
define i1 @f8(i32 %a, i32 %b) {
%l8 = shl i32 %a, 24
%r8 = lshr i32 %a, 8
%tmp = or i32 %l8, %r8
%nb = sub i32 0, %tmp
%tmp1 = icmp ne i32 %a, %nb
ret i1 %tmp1
}
; CHECK: f8:
; CHECK: cmn.w {{.*}}, {{.*}}, ror #8
define void @f9(i32 %a, i32 %b) nounwind optsize {
tail call void asm sideeffect "cmn.w r0, r1", ""() nounwind, !srcloc !0
ret void
}
!0 = metadata !{i32 81}
; CHECK: f9:
; CHECK: cmn.w r0, r1
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