xref: /aosp_15_r20/external/llvm/test/CodeGen/Thumb2/thumb2-rsb.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58) 
1*9880d681SAndroid Build Coastguard Worker; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s
2*9880d681SAndroid Build Coastguard Worker
3*9880d681SAndroid Build Coastguard Workerdefine i32 @f1(i32 %a, i32 %b) {
4*9880d681SAndroid Build Coastguard Worker    %tmp = shl i32 %b, 5
5*9880d681SAndroid Build Coastguard Worker    %tmp1 = sub i32 %tmp, %a
6*9880d681SAndroid Build Coastguard Worker    ret i32 %tmp1
7*9880d681SAndroid Build Coastguard Worker}
8*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f1:
9*9880d681SAndroid Build Coastguard Worker; CHECK: 	rsb	r0, r0, r1, lsl #5
10*9880d681SAndroid Build Coastguard Worker
11*9880d681SAndroid Build Coastguard Workerdefine i32 @f2(i32 %a, i32 %b) {
12*9880d681SAndroid Build Coastguard Worker    %tmp = lshr i32 %b, 6
13*9880d681SAndroid Build Coastguard Worker    %tmp1 = sub i32 %tmp, %a
14*9880d681SAndroid Build Coastguard Worker    ret i32 %tmp1
15*9880d681SAndroid Build Coastguard Worker}
16*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f2:
17*9880d681SAndroid Build Coastguard Worker; CHECK: 	rsb	r0, r0, r1, lsr #6
18*9880d681SAndroid Build Coastguard Worker
19*9880d681SAndroid Build Coastguard Workerdefine i32 @f3(i32 %a, i32 %b) {
20*9880d681SAndroid Build Coastguard Worker    %tmp = ashr i32 %b, 7
21*9880d681SAndroid Build Coastguard Worker    %tmp1 = sub i32 %tmp, %a
22*9880d681SAndroid Build Coastguard Worker    ret i32 %tmp1
23*9880d681SAndroid Build Coastguard Worker}
24*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f3:
25*9880d681SAndroid Build Coastguard Worker; CHECK: 	rsb	r0, r0, r1, asr #7
26*9880d681SAndroid Build Coastguard Worker
27*9880d681SAndroid Build Coastguard Workerdefine i32 @f4(i32 %a, i32 %b) {
28*9880d681SAndroid Build Coastguard Worker    %l8 = shl i32 %a, 24
29*9880d681SAndroid Build Coastguard Worker    %r8 = lshr i32 %a, 8
30*9880d681SAndroid Build Coastguard Worker    %tmp = or i32 %l8, %r8
31*9880d681SAndroid Build Coastguard Worker    %tmp1 = sub i32 %tmp, %a
32*9880d681SAndroid Build Coastguard Worker    ret i32 %tmp1
33*9880d681SAndroid Build Coastguard Worker}
34*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: f4:
35*9880d681SAndroid Build Coastguard Worker; CHECK: 	rsb	r0, r0, r0, ror #8
36