thumb2-tst2.ll
1.55 KB
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; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
; These tests would be improved by 'movs r0, #0' being rematerialized below the
; tst as 'mov.w r0, #0'.
define i32 @f2(i32 %a, i32 %b) {
; CHECK-LABEL: f2:
; CHECK: tst {{.*}}, r1
%tmp = and i32 %a, %b
%tmp1 = icmp eq i32 %tmp, 0
%ret = select i1 %tmp1, i32 42, i32 24
ret i32 %ret
}
define i32 @f4(i32 %a, i32 %b) {
; CHECK-LABEL: f4:
; CHECK: tst {{.*}}, r1
%tmp = and i32 %a, %b
%tmp1 = icmp eq i32 0, %tmp
%ret = select i1 %tmp1, i32 42, i32 24
ret i32 %ret
}
define i32 @f6(i32 %a, i32 %b) {
; CHECK-LABEL: f6:
; CHECK: tst.w {{.*}}, r1, lsl #5
%tmp = shl i32 %b, 5
%tmp1 = and i32 %a, %tmp
%tmp2 = icmp eq i32 %tmp1, 0
%ret = select i1 %tmp2, i32 42, i32 24
ret i32 %ret
}
define i32 @f7(i32 %a, i32 %b) {
; CHECK-LABEL: f7:
; CHECK: tst.w {{.*}}, r1, lsr #6
%tmp = lshr i32 %b, 6
%tmp1 = and i32 %a, %tmp
%tmp2 = icmp eq i32 %tmp1, 0
%ret = select i1 %tmp2, i32 42, i32 24
ret i32 %ret
}
define i32 @f8(i32 %a, i32 %b) {
; CHECK-LABEL: f8:
; CHECK: tst.w {{.*}}, r1, asr #7
%tmp = ashr i32 %b, 7
%tmp1 = and i32 %a, %tmp
%tmp2 = icmp eq i32 %tmp1, 0
%ret = select i1 %tmp2, i32 42, i32 24
ret i32 %ret
}
define i32 @f9(i32 %a, i32 %b) {
; CHECK-LABEL: f9:
; CHECK: tst.w {{.*}}, {{.*}}, ror #8
%l8 = shl i32 %a, 24
%r8 = lshr i32 %a, 8
%tmp = or i32 %l8, %r8
%tmp1 = and i32 %a, %tmp
%tmp2 = icmp eq i32 %tmp1, 0
%ret = select i1 %tmp2, i32 42, i32 24
ret i32 %ret
}