Codebase Browser
llvm
Go to App

llvm/llvm/test/CodeGen/AArch64/addsub-constant-folding.ll 

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64-unknown-unknown | FileCheck %s

declare void @use(i32 %arg)
declare void @vec_use(<4 x i32> %arg)

; (x+c1)+c2

define i32 @add_const_add_const(i32 %arg) {
; CHECK-LABEL: add_const_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    add w0, w0, #10
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define i32 @add_const_add_const_extrause(i32 %arg) {
; CHECK-LABEL: add_const_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    add w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    add w0, w19, #10
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_add_const_add_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #10
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_add_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #10
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    add v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_add_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_add_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI4_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI4_0]
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = add <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; (x+c1)-c2

define i32 @add_const_sub_const(i32 %arg) {
; CHECK-LABEL: add_const_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    add w0, w0, #6
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define i32 @add_const_sub_const_extrause(i32 %arg) {
; CHECK-LABEL: add_const_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    add w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    add w0, w19, #6
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_add_const_sub_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #6
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_sub_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #6
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    add v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_sub_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_sub_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI9_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI9_0]
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = sub <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; c2-(x+c1)

define i32 @add_const_const_sub(i32 %arg) {
; CHECK-LABEL: add_const_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #-6 // =0xfffffffa
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define i32 @add_const_const_sub_extrause(i32 %arg) {
; CHECK-LABEL: add_const_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    add w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    mov w8, #-6 // =0xfffffffa
; CHECK-NEXT:    sub w0, w8, w19
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = add i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define <4 x i32> @vec_add_const_const_sub(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mvni v1.4s, #5
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_const_sub_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    mvni v0.4s, #5
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_add_const_const_sub_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_add_const_const_sub_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI14_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI14_0]
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = add <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = sub <4 x i32> <i32 2, i32 3, i32 undef, i32 2>, %t0
  ret <4 x i32> %t1
}

; (x-c1)+c2

define i32 @sub_const_add_const(i32 %arg) {
; CHECK-LABEL: sub_const_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub w0, w0, #6
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define i32 @sub_const_add_const_extrause(i32 %arg) {
; CHECK-LABEL: sub_const_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    sub w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    sub w0, w19, #6
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_sub_const_add_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mvni v1.4s, #5
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_add_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    mvni v0.4s, #5
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    add v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_add_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_add_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI19_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI19_0]
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = add <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; (x-c1)-c2

define i32 @sub_const_sub_const(i32 %arg) {
; CHECK-LABEL: sub_const_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub w0, w0, #10
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define i32 @sub_const_sub_const_extrause(i32 %arg) {
; CHECK-LABEL: sub_const_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    sub w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    sub w0, w19, #10
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_sub_const_sub_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #10
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_sub_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #10
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_sub_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_sub_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI24_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI24_0]
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = sub <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; c2-(x-c1)

define i32 @sub_const_const_sub(i32 %arg) {
; CHECK-LABEL: sub_const_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #10 // =0xa
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define i32 @sub_const_const_sub_extrause(i32 %arg) {
; CHECK-LABEL: sub_const_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    sub w0, w0, #8
; CHECK-NEXT:    bl use
; CHECK-NEXT:    mov w8, #10 // =0xa
; CHECK-NEXT:    sub w0, w8, w19
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 %arg, 8
  call void @use(i32 %t0)
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define <4 x i32> @vec_sub_const_const_sub(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #10
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_const_sub_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #2
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 8, i32 8, i32 8, i32 8>
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_sub_const_const_sub_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_sub_const_const_sub_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI29_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI29_0]
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> %arg, <i32 21, i32 undef, i32 8, i32 8>
  %t1 = sub <4 x i32> <i32 2, i32 3, i32 undef, i32 2>, %t0
  ret <4 x i32> %t1
}

; (c1-x)+c2

define i32 @const_sub_add_const(i32 %arg) {
; CHECK-LABEL: const_sub_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #10 // =0xa
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define i32 @const_sub_add_const_extrause(i32 %arg) {
; CHECK-LABEL: const_sub_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w8, #8 // =0x8
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    bl use
; CHECK-NEXT:    mov w8, #10 // =0xa
; CHECK-NEXT:    sub w0, w8, w19
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  call void @use(i32 %t0)
  %t1 = add i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_const_sub_add_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_add_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #10
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_add_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_add_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #10
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  call void @vec_use(<4 x i32> %t0)
  %t1 = add <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_add_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_add_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI34_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI34_0]
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 21, i32 undef, i32 8, i32 8>, %arg
  %t1 = add <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; (c1-x)-c2

define i32 @const_sub_sub_const(i32 %arg) {
; CHECK-LABEL: const_sub_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #6 // =0x6
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define i32 @const_sub_sub_const_extrause(i32 %arg) {
; CHECK-LABEL: const_sub_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w8, #8 // =0x8
; CHECK-NEXT:    mov w19, w0
; CHECK-NEXT:    sub w0, w8, w0
; CHECK-NEXT:    bl use
; CHECK-NEXT:    mov w8, #6 // =0x6
; CHECK-NEXT:    sub w0, w8, w19
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  call void @use(i32 %t0)
  %t1 = sub i32 %t0, 2
  ret i32 %t1
}

define <4 x i32> @vec_const_sub_sub_const(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_sub_const:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #6
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_sub_const_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_sub_const_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #6
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> %t0, <i32 2, i32 2, i32 2, i32 2>
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_sub_const_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_sub_const_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI39_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI39_0]
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 21, i32 undef, i32 8, i32 8>, %arg
  %t1 = sub <4 x i32> %t0, <i32 2, i32 3, i32 undef, i32 2>
  ret <4 x i32> %t1
}

; c2-(c1-x)

define i32 @const_sub_const_sub(i32 %arg) {
; CHECK-LABEL: const_sub_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub w0, w0, #6
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define i32 @const_sub_const_sub_extrause(i32 %arg) {
; CHECK-LABEL: const_sub_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    stp x30, x19, [sp, #-16]! // 16-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 16
; CHECK-NEXT:    .cfi_offset w19, -8
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    mov w8, #8 // =0x8
; CHECK-NEXT:    sub w19, w8, w0
; CHECK-NEXT:    mov w0, w19
; CHECK-NEXT:    bl use
; CHECK-NEXT:    mov w8, #2 // =0x2
; CHECK-NEXT:    sub w0, w8, w19
; CHECK-NEXT:    ldp x30, x19, [sp], #16 // 16-byte Folded Reload
; CHECK-NEXT:    ret
  %t0 = sub i32 8, %arg
  call void @use(i32 %t0)
  %t1 = sub i32 2, %t0
  ret i32 %t1
}

define <4 x i32> @vec_const_sub_const_sub(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_const_sub:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mvni v1.4s, #5
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_const_sub_extrause(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_const_sub_extrause:
; CHECK:       // %bb.0:
; CHECK-NEXT:    sub sp, sp, #32
; CHECK-NEXT:    str x30, [sp, #16] // 8-byte Folded Spill
; CHECK-NEXT:    .cfi_def_cfa_offset 32
; CHECK-NEXT:    .cfi_offset w30, -16
; CHECK-NEXT:    movi v1.4s, #8
; CHECK-NEXT:    sub v0.4s, v1.4s, v0.4s
; CHECK-NEXT:    str q0, [sp] // 16-byte Folded Spill
; CHECK-NEXT:    bl vec_use
; CHECK-NEXT:    movi v0.4s, #2
; CHECK-NEXT:    ldr q1, [sp] // 16-byte Folded Reload
; CHECK-NEXT:    ldr x30, [sp, #16] // 8-byte Folded Reload
; CHECK-NEXT:    sub v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    add sp, sp, #32
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 8, i32 8, i32 8, i32 8>, %arg
  call void @vec_use(<4 x i32> %t0)
  %t1 = sub <4 x i32> <i32 2, i32 2, i32 2, i32 2>, %t0
  ret <4 x i32> %t1
}

define <4 x i32> @vec_const_sub_const_sub_nonsplat(<4 x i32> %arg) {
; CHECK-LABEL: vec_const_sub_const_sub_nonsplat:
; CHECK:       // %bb.0:
; CHECK-NEXT:    adrp x8, .LCPI44_0
; CHECK-NEXT:    ldr q1, [x8, :lo12:.LCPI44_0]
; CHECK-NEXT:    add v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %t0 = sub <4 x i32> <i32 21, i32 undef, i32 8, i32 8>, %arg
  %t1 = sub <4 x i32> <i32 2, i32 3, i32 undef, i32 2>, %t0
  ret <4 x i32> %t1
}