llvm/test/CodeGen/Thumb2/mve-complex-deinterleaving-f64-add.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s --mattr=+mve.fp,+fp64 -o - | FileCheck %s

target triple = "thumbv8.1m.main-none-none-eabi"


; Expected to not transform
define arm_aapcs_vfpcc <2 x double> @complex_add_v2f64(<2 x double> %a, <2 x double> %b) {
; CHECK-LABEL: complex_add_v2f64:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    vadd.f64 d3, d3, d0
; CHECK-NEXT:    vsub.f64 d2, d2, d1
; CHECK-NEXT:    vmov q0, q1
; CHECK-NEXT:    bx lr
entry:
  %a.real = shufflevector <2 x double> %a, <2 x double> zeroinitializer, <1 x i32> <i32 0>
  %a.imag = shufflevector <2 x double> %a, <2 x double> zeroinitializer, <1 x i32> <i32 1>
  %b.real = shufflevector <2 x double> %b, <2 x double> zeroinitializer, <1 x i32> <i32 0>
  %b.imag = shufflevector <2 x double> %b, <2 x double> zeroinitializer, <1 x i32> <i32 1>
  %0 = fsub fast <1 x double> %b.real, %a.imag
  %1 = fadd fast <1 x double> %b.imag, %a.real
  %interleaved.vec = shufflevector <1 x double> %0, <1 x double> %1, <2 x i32> <i32 0, i32 1>
  ret <2 x double> %interleaved.vec
}

; Expected to not transform
define arm_aapcs_vfpcc <4 x double> @complex_add_v4f64(<4 x double> %a, <4 x double> %b) {
; CHECK-LABEL: complex_add_v4f64:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    vadd.f64 d5, d5, d0
; CHECK-NEXT:    vsub.f64 d4, d4, d1
; CHECK-NEXT:    vadd.f64 d7, d7, d2
; CHECK-NEXT:    vmov q0, q2
; CHECK-NEXT:    vsub.f64 d6, d6, d3
; CHECK-NEXT:    vmov q1, q3
; CHECK-NEXT:    bx lr
entry:
  %a.real = shufflevector <4 x double> %a, <4 x double> zeroinitializer, <2 x i32> <i32 0, i32 2>
  %a.imag = shufflevector <4 x double> %a, <4 x double> zeroinitializer, <2 x i32> <i32 1, i32 3>
  %b.real = shufflevector <4 x double> %b, <4 x double> zeroinitializer, <2 x i32> <i32 0, i32 2>
  %b.imag = shufflevector <4 x double> %b, <4 x double> zeroinitializer, <2 x i32> <i32 1, i32 3>
  %0 = fsub fast <2 x double> %b.real, %a.imag
  %1 = fadd fast <2 x double> %b.imag, %a.real
  %interleaved.vec = shufflevector <2 x double> %0, <2 x double> %1, <4 x i32> <i32 0, i32 2, i32 1, i32 3>
  ret <4 x double> %interleaved.vec
}

; Expected to not transform
define arm_aapcs_vfpcc <8 x double> @complex_add_v8f64(<8 x double> %a, <8 x double> %b) {
; CHECK-LABEL: complex_add_v8f64:
; CHECK:       @ %bb.0: @ %entry
; CHECK-NEXT:    .vsave {d8, d9, d10, d11}
; CHECK-NEXT:    vpush {d8, d9, d10, d11}
; CHECK-NEXT:    add r0, sp, #32
; CHECK-NEXT:    vmov q4, q1
; CHECK-NEXT:    vmov q1, q0
; CHECK-NEXT:    vldrw.u32 q0, [r0]
; CHECK-NEXT:    add r0, sp, #48
; CHECK-NEXT:    vadd.f64 d1, d1, d2
; CHECK-NEXT:    vsub.f64 d0, d0, d3
; CHECK-NEXT:    vldrw.u32 q1, [r0]
; CHECK-NEXT:    add r0, sp, #64
; CHECK-NEXT:    vadd.f64 d3, d3, d8
; CHECK-NEXT:    vsub.f64 d2, d2, d9
; CHECK-NEXT:    vldrw.u32 q4, [r0]
; CHECK-NEXT:    add r0, sp, #80
; CHECK-NEXT:    vadd.f64 d9, d9, d4
; CHECK-NEXT:    vsub.f64 d8, d8, d5
; CHECK-NEXT:    vldrw.u32 q2, [r0]
; CHECK-NEXT:    vadd.f64 d11, d5, d6
; CHECK-NEXT:    vsub.f64 d10, d4, d7
; CHECK-NEXT:    vmov q2, q4
; CHECK-NEXT:    vmov q3, q5
; CHECK-NEXT:    vpop {d8, d9, d10, d11}
; CHECK-NEXT:    bx lr
entry:
  %a.real = shufflevector <8 x double> %a, <8 x double> zeroinitializer, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
  %a.imag = shufflevector <8 x double> %a, <8 x double> zeroinitializer, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
  %b.real = shufflevector <8 x double> %b, <8 x double> zeroinitializer, <4 x i32> <i32 0, i32 2, i32 4, i32 6>
  %b.imag = shufflevector <8 x double> %b, <8 x double> zeroinitializer, <4 x i32> <i32 1, i32 3, i32 5, i32 7>
  %0 = fsub fast <4 x double> %b.real, %a.imag
  %1 = fadd fast <4 x double> %b.imag, %a.real
  %interleaved.vec = shufflevector <4 x double> %0, <4 x double> %1, <8 x i32> <i32 0, i32 4, i32 1, i32 5, i32 2, i32 6, i32 3, i32 7>
  ret <8 x double> %interleaved.vec
}