File: thumb2-rsb.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2 %s -o - | FileCheck %s

define i32 @f1(i32 %a, i32 %b) {
    %tmp = shl i32 %b, 5
    %tmp1 = sub i32 %tmp, %a
    ret i32 %tmp1
}
; CHECK-LABEL: f1:
; CHECK: 	rsb	r0, r0, r1, lsl #5

define i32 @f2(i32 %a, i32 %b) {
    %tmp = lshr i32 %b, 6
    %tmp1 = sub i32 %tmp, %a
    ret i32 %tmp1
}
; CHECK-LABEL: f2:
; CHECK: 	rsb	r0, r0, r1, lsr #6

define i32 @f3(i32 %a, i32 %b) {
    %tmp = ashr i32 %b, 7
    %tmp1 = sub i32 %tmp, %a
    ret i32 %tmp1
}
; CHECK-LABEL: f3:
; CHECK: 	rsb	r0, r0, r1, asr #7

define i32 @f4(i32 %a, i32 %b) {
    %l8 = shl i32 %a, 24
    %r8 = lshr i32 %a, 8
    %tmp = or i32 %l8, %r8
    %tmp1 = sub i32 %tmp, %a
    ret i32 %tmp1
}
; CHECK-LABEL: f4:
; CHECK: 	rsb	r0, r0, r0, ror #8