third_party/llvm-7.0/llvm/test/CodeGen/X86/avx2-fma-fneg-combine.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=+avx2,+fma | FileCheck %s --check-prefix=X32
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx2,+fma | FileCheck %s --check-prefix=X64

; This test checks combinations of FNEG and FMA intrinsics

define <8 x float> @test1(<8 x float> %a, <8 x float> %b, <8 x float> %c)  {
; X32-LABEL: test1:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfmsub213ps {{.*#+}} ymm0 = (ymm1 * ymm0) - ymm2
; X32-NEXT:    retl
;
; X64-LABEL: test1:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfmsub213ps {{.*#+}} ymm0 = (ymm1 * ymm0) - ymm2
; X64-NEXT:    retq
entry:
  %sub.i = fsub <8 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %c
  %0 = tail call <8 x float> @llvm.x86.fma.vfmadd.ps.256(<8 x float> %a, <8 x float> %b, <8 x float> %sub.i) #2
  ret <8 x float> %0
}

declare <8 x float> @llvm.x86.fma.vfmadd.ps.256(<8 x float>, <8 x float>, <8 x float>)

define <4 x float> @test2(<4 x float> %a, <4 x float> %b, <4 x float> %c) {
; X32-LABEL: test2:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfnmsub213ps {{.*#+}} xmm0 = -(xmm1 * xmm0) - xmm2
; X32-NEXT:    retl
;
; X64-LABEL: test2:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfnmsub213ps {{.*#+}} xmm0 = -(xmm1 * xmm0) - xmm2
; X64-NEXT:    retq
entry:
  %0 = tail call <4 x float> @llvm.x86.fma.vfmadd.ps(<4 x float> %a, <4 x float> %b, <4 x float> %c) #2
  %sub.i = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %0
  ret <4 x float> %sub.i
}

declare <4 x float> @llvm.x86.fma.vfmadd.ps(<4 x float> %a, <4 x float> %b, <4 x float> %c)

define <4 x float> @test3(<4 x float> %a, <4 x float> %b, <4 x float> %c)  {
; X32-LABEL: test3:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfnmadd213ss {{.*#+}} xmm0 = -(xmm1 * xmm0) + xmm2
; X32-NEXT:    vbroadcastss {{.*#+}} xmm1 = [-0,-0,-0,-0]
; X32-NEXT:    vxorps %xmm1, %xmm0, %xmm0
; X32-NEXT:    retl
;
; X64-LABEL: test3:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfnmadd213ss {{.*#+}} xmm0 = -(xmm1 * xmm0) + xmm2
; X64-NEXT:    vbroadcastss {{.*#+}} xmm1 = [-0,-0,-0,-0]
; X64-NEXT:    vxorps %xmm1, %xmm0, %xmm0
; X64-NEXT:    retq
entry:
  %0 = tail call <4 x float> @llvm.x86.fma.vfnmadd.ss(<4 x float> %a, <4 x float> %b, <4 x float> %c) #2
  %sub.i = fsub <4 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %0
  ret <4 x float> %sub.i
}

declare <4 x float> @llvm.x86.fma.vfnmadd.ss(<4 x float> %a, <4 x float> %b, <4 x float> %c)

define <8 x float> @test4(<8 x float> %a, <8 x float> %b, <8 x float> %c) {
; X32-LABEL: test4:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm1 * ymm0) + ymm2
; X32-NEXT:    retl
;
; X64-LABEL: test4:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm1 * ymm0) + ymm2
; X64-NEXT:    retq
entry:
  %0 = tail call <8 x float> @llvm.x86.fma.vfmsub.ps.256(<8 x float> %a, <8 x float> %b, <8 x float> %c) #2
  %sub.i = fsub <8 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %0
  ret <8 x float> %sub.i
}

define <8 x float> @test5(<8 x float> %a, <8 x float> %b, <8 x float> %c) {
; X32-LABEL: test5:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm1 * ymm0) + ymm2
; X32-NEXT:    retl
;
; X64-LABEL: test5:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm1 * ymm0) + ymm2
; X64-NEXT:    retq
entry:
  %sub.c = fsub <8 x float> <float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00, float -0.000000e+00>, %c
  %0 = tail call <8 x float> @llvm.x86.fma.vfmsub.ps.256(<8 x float> %a, <8 x float> %b, <8 x float> %sub.c) #2
  ret <8 x float> %0
}

declare <8 x float> @llvm.x86.fma.vfmsub.ps.256(<8 x float>, <8 x float>, <8 x float>)


define <2 x double> @test6(<2 x double> %a, <2 x double> %b, <2 x double> %c) {
; X32-LABEL: test6:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vfnmsub213pd {{.*#+}} xmm0 = -(xmm1 * xmm0) - xmm2
; X32-NEXT:    retl
;
; X64-LABEL: test6:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vfnmsub213pd {{.*#+}} xmm0 = -(xmm1 * xmm0) - xmm2
; X64-NEXT:    retq
entry:
  %0 = tail call <2 x double> @llvm.x86.fma.vfmadd.pd(<2 x double> %a, <2 x double> %b, <2 x double> %c) #2
  %sub.i = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, %0
  ret <2 x double> %sub.i
}

declare <2 x double> @llvm.x86.fma.vfmadd.pd(<2 x double> %a, <2 x double> %b, <2 x double> %c)

define <8 x float> @test7(float %a, <8 x float> %b, <8 x float> %c)  {
; X32-LABEL: test7:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vmovss {{.*#+}} xmm2 = mem[0],zero,zero,zero
; X32-NEXT:    vmovss {{.*#+}} xmm3 = mem[0],zero,zero,zero
; X32-NEXT:    vsubps %ymm2, %ymm3, %ymm2
; X32-NEXT:    vbroadcastss %xmm2, %ymm2
; X32-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm2 * ymm0) + ymm1
; X32-NEXT:    retl
;
; X64-LABEL: test7:
; X64:       # %bb.0: # %entry
; X64-NEXT:    # kill: def $xmm0 killed $xmm0 def $ymm0
; X64-NEXT:    vmovss {{.*#+}} xmm3 = mem[0],zero,zero,zero
; X64-NEXT:    vsubps %ymm0, %ymm3, %ymm0
; X64-NEXT:    vbroadcastss %xmm0, %ymm0
; X64-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm1 * ymm0) + ymm2
; X64-NEXT:    retq
entry:
  %0 = insertelement <8 x float> undef, float %a, i32 0
  %1 = fsub <8 x float> <float -0.000000e+00, float undef, float undef, float undef, float undef, float undef, float undef, float undef>, %0
  %2 = shufflevector <8 x float> %1, <8 x float> undef, <8 x i32> zeroinitializer
  %3 = tail call <8 x float> @llvm.fma.v8f32(<8 x float> %2, <8 x float> %b, <8 x float> %c)
  ret <8 x float> %3

}

define <8 x float> @test8(float %a, <8 x float> %b, <8 x float> %c)  {
; X32-LABEL: test8:
; X32:       # %bb.0: # %entry
; X32-NEXT:    vmovss {{.*#+}} xmm2 = mem[0],zero,zero,zero
; X32-NEXT:    vbroadcastss {{.*#+}} xmm3 = [-0,-0,-0,-0]
; X32-NEXT:    vxorps %xmm3, %xmm2, %xmm2
; X32-NEXT:    vbroadcastss %xmm2, %ymm2
; X32-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm2 * ymm0) + ymm1
; X32-NEXT:    retl
;
; X64-LABEL: test8:
; X64:       # %bb.0: # %entry
; X64-NEXT:    vbroadcastss {{.*#+}} xmm3 = [-0,-0,-0,-0]
; X64-NEXT:    vxorps %xmm3, %xmm0, %xmm0
; X64-NEXT:    vbroadcastss %xmm0, %ymm0
; X64-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm1 * ymm0) + ymm2
; X64-NEXT:    retq
entry:
  %0 = fsub float -0.0, %a
  %1 = insertelement <8 x float> undef, float %0, i32 0
  %2 = shufflevector <8 x float> %1, <8 x float> undef, <8 x i32> zeroinitializer
  %3 = tail call <8 x float> @llvm.fma.v8f32(<8 x float> %2, <8 x float> %b, <8 x float> %c)
  ret <8 x float> %3
}

declare <8 x float> @llvm.fma.v8f32(<8 x float> %a, <8 x float> %b, <8 x float> %c)