[llvm] r331605 - [X86] Add test cases for reciprocal estimation for v16f32 vectors with AVX512F.

Craig Topper via llvm-commits llvm-commits at lists.llvm.org
Sun May 6 10:45:40 PDT 2018


Author: ctopper
Date: Sun May  6 10:45:40 2018
New Revision: 331605

URL: http://llvm.org/viewvc/llvm-project?rev=331605&view=rev
Log:
[X86] Add test cases for reciprocal estimation for v16f32 vectors with AVX512F.

We should be able to use the vrsqrt14ps and vrcp14ps instructions for these cases.

Modified:
    llvm/trunk/test/CodeGen/X86/recip-fastmath.ll
    llvm/trunk/test/CodeGen/X86/recip-fastmath2.ll
    llvm/trunk/test/CodeGen/X86/sqrt-fastmath.ll

Modified: llvm/trunk/test/CodeGen/X86/recip-fastmath.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/recip-fastmath.ll?rev=331605&r1=331604&r2=331605&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/recip-fastmath.ll (original)
+++ llvm/trunk/test/CodeGen/X86/recip-fastmath.ll Sun May  6 10:45:40 2018
@@ -833,6 +833,408 @@ define <8 x float> @v8f32_two_step(<8 x
   ret <8 x float> %div
 }
 
+define <16 x float> @v16f32_no_estimate(<16 x float> %x) #0 {
+; SSE-LABEL: v16f32_no_estimate:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps {{.*#+}} xmm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm4, %xmm5
+; SSE-NEXT:    divps %xmm0, %xmm5
+; SSE-NEXT:    movaps %xmm4, %xmm6
+; SSE-NEXT:    divps %xmm1, %xmm6
+; SSE-NEXT:    movaps %xmm4, %xmm7
+; SSE-NEXT:    divps %xmm2, %xmm7
+; SSE-NEXT:    divps %xmm3, %xmm4
+; SSE-NEXT:    movaps %xmm5, %xmm0
+; SSE-NEXT:    movaps %xmm6, %xmm1
+; SSE-NEXT:    movaps %xmm7, %xmm2
+; SSE-NEXT:    movaps %xmm4, %xmm3
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_no_estimate:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm2 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vdivps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vdivps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_no_estimate:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm2 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vdivps %ymm0, %ymm2, %ymm0
+; FMA-RECIP-NEXT:    vdivps %ymm1, %ymm2, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_no_estimate:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm2 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vdivps %ymm0, %ymm2, %ymm0 # sched: [38:38.00]
+; BTVER2-NEXT:    vdivps %ymm1, %ymm2, %ymm1 # sched: [38:38.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_no_estimate:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm2 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vdivps %ymm0, %ymm2, %ymm0 # sched: [29:28.00]
+; SANDY-NEXT:    vdivps %ymm1, %ymm2, %ymm1 # sched: [29:28.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_no_estimate:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm2 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vdivps %ymm0, %ymm2, %ymm0 # sched: [21:14.00]
+; HASWELL-NEXT:    vdivps %ymm1, %ymm2, %ymm1 # sched: [21:14.00]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_no_estimate:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm2 = [1,1,1,1,1,1,1,1]
+; HASWELL-NO-FMA-NEXT:    vdivps %ymm0, %ymm2, %ymm0
+; HASWELL-NO-FMA-NEXT:    vdivps %ymm1, %ymm2, %ymm1
+; HASWELL-NO-FMA-NEXT:    retq
+;
+; KNL-LABEL: v16f32_no_estimate:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [10:1.00]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_no_estimate:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %x
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_one_step(<16 x float> %x) #1 {
+; SSE-LABEL: v16f32_one_step:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm3, %xmm4
+; SSE-NEXT:    movaps %xmm0, %xmm5
+; SSE-NEXT:    rcpps %xmm0, %xmm6
+; SSE-NEXT:    mulps %xmm6, %xmm5
+; SSE-NEXT:    movaps {{.*#+}} xmm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm3, %xmm0
+; SSE-NEXT:    subps %xmm5, %xmm0
+; SSE-NEXT:    mulps %xmm6, %xmm0
+; SSE-NEXT:    addps %xmm6, %xmm0
+; SSE-NEXT:    rcpps %xmm1, %xmm6
+; SSE-NEXT:    mulps %xmm6, %xmm1
+; SSE-NEXT:    movaps %xmm3, %xmm5
+; SSE-NEXT:    subps %xmm1, %xmm5
+; SSE-NEXT:    mulps %xmm6, %xmm5
+; SSE-NEXT:    addps %xmm6, %xmm5
+; SSE-NEXT:    rcpps %xmm2, %xmm1
+; SSE-NEXT:    mulps %xmm1, %xmm2
+; SSE-NEXT:    movaps %xmm3, %xmm6
+; SSE-NEXT:    subps %xmm2, %xmm6
+; SSE-NEXT:    mulps %xmm1, %xmm6
+; SSE-NEXT:    addps %xmm1, %xmm6
+; SSE-NEXT:    rcpps %xmm4, %xmm1
+; SSE-NEXT:    mulps %xmm1, %xmm4
+; SSE-NEXT:    subps %xmm4, %xmm3
+; SSE-NEXT:    mulps %xmm1, %xmm3
+; SSE-NEXT:    addps %xmm1, %xmm3
+; SSE-NEXT:    movaps %xmm5, %xmm1
+; SSE-NEXT:    movaps %xmm6, %xmm2
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_one_step:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vsubps %ymm1, %ymm3, %ymm1
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_one_step:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_one_step:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm4 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm4, %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm4, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vaddps %ymm1, %ymm4, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_one_step:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm0, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vrcpps %ymm1, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_one_step:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm4 # sched: [11:2.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_one_step:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm1, %ymm3, %ymm1
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; HASWELL-NO-FMA-NEXT:    retq
+;
+; KNL-LABEL: v16f32_one_step:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [10:1.00]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_one_step:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %x
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_two_step(<16 x float> %x) #2 {
+; SSE-LABEL: v16f32_two_step:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm3, %xmm4
+; SSE-NEXT:    movaps %xmm1, %xmm5
+; SSE-NEXT:    movaps %xmm0, %xmm1
+; SSE-NEXT:    rcpps %xmm0, %xmm0
+; SSE-NEXT:    movaps %xmm1, %xmm6
+; SSE-NEXT:    mulps %xmm0, %xmm6
+; SSE-NEXT:    movaps {{.*#+}} xmm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm3, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm0, %xmm7
+; SSE-NEXT:    addps %xmm0, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm1
+; SSE-NEXT:    movaps %xmm3, %xmm0
+; SSE-NEXT:    subps %xmm1, %xmm0
+; SSE-NEXT:    mulps %xmm7, %xmm0
+; SSE-NEXT:    addps %xmm7, %xmm0
+; SSE-NEXT:    rcpps %xmm5, %xmm1
+; SSE-NEXT:    movaps %xmm5, %xmm6
+; SSE-NEXT:    mulps %xmm1, %xmm6
+; SSE-NEXT:    movaps %xmm3, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm1, %xmm7
+; SSE-NEXT:    addps %xmm1, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm5
+; SSE-NEXT:    movaps %xmm3, %xmm1
+; SSE-NEXT:    subps %xmm5, %xmm1
+; SSE-NEXT:    mulps %xmm7, %xmm1
+; SSE-NEXT:    addps %xmm7, %xmm1
+; SSE-NEXT:    rcpps %xmm2, %xmm5
+; SSE-NEXT:    movaps %xmm2, %xmm6
+; SSE-NEXT:    mulps %xmm5, %xmm6
+; SSE-NEXT:    movaps %xmm3, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm5, %xmm7
+; SSE-NEXT:    addps %xmm5, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm2
+; SSE-NEXT:    movaps %xmm3, %xmm5
+; SSE-NEXT:    subps %xmm2, %xmm5
+; SSE-NEXT:    mulps %xmm7, %xmm5
+; SSE-NEXT:    addps %xmm7, %xmm5
+; SSE-NEXT:    rcpps %xmm4, %xmm2
+; SSE-NEXT:    movaps %xmm4, %xmm6
+; SSE-NEXT:    mulps %xmm2, %xmm6
+; SSE-NEXT:    movaps %xmm3, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm2, %xmm7
+; SSE-NEXT:    addps %xmm2, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm4
+; SSE-NEXT:    subps %xmm4, %xmm3
+; SSE-NEXT:    mulps %xmm7, %xmm3
+; SSE-NEXT:    addps %xmm7, %xmm3
+; SSE-NEXT:    movaps %xmm5, %xmm2
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_two_step:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm3
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; AVX-RECIP-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; AVX-RECIP-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vsubps %ymm0, %ymm4, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm3
+; AVX-RECIP-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; AVX-RECIP-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; AVX-RECIP-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vsubps %ymm1, %ymm4, %ymm1
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_two_step:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vmovaps %ymm2, %ymm4
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm0 * ymm4) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm4 * ymm0) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm4) + ymm4
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vmovaps %ymm2, %ymm4
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm1 * ymm4) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm4) + ymm4
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_two_step:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm0, %ymm4, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm1, %ymm4, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_two_step:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm0, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm0, %ymm4, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vrcpps %ymm1, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm1, %ymm4, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_two_step:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vmovaps %ymm2, %ymm4 # sched: [1:1.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm0 * ymm4) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm4 * ymm0) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vmovaps %ymm2, %ymm4 # sched: [1:1.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm1 * ymm4) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_two_step:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm3
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm4 = [1,1,1,1,1,1,1,1]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm0, %ymm4, %ymm0
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm3
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm1, %ymm4, %ymm1
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; HASWELL-NO-FMA-NEXT:    retq
+;
+; KNL-LABEL: v16f32_two_step:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [10:1.00]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_two_step:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %x
+  ret <16 x float> %div
+}
+
 attributes #0 = { "unsafe-fp-math"="true" "reciprocal-estimates"="!divf,!vec-divf" }
 attributes #1 = { "unsafe-fp-math"="true" "reciprocal-estimates"="divf,vec-divf" }
 attributes #2 = { "unsafe-fp-math"="true" "reciprocal-estimates"="divf:2,vec-divf:2" }

Modified: llvm/trunk/test/CodeGen/X86/recip-fastmath2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/recip-fastmath2.ll?rev=331605&r1=331604&r2=331605&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/recip-fastmath2.ll (original)
+++ llvm/trunk/test/CodeGen/X86/recip-fastmath2.ll Sun May  6 10:45:40 2018
@@ -1190,6 +1190,668 @@ define <8 x float> @v8f32_no_step2(<8 x
   ret <8 x float> %div
 }
 
+define <16 x float> @v16f32_one_step2(<16 x float> %x) #1 {
+; SSE-LABEL: v16f32_one_step2:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm3, %xmm4
+; SSE-NEXT:    movaps %xmm2, %xmm5
+; SSE-NEXT:    movaps %xmm0, %xmm6
+; SSE-NEXT:    rcpps %xmm3, %xmm2
+; SSE-NEXT:    mulps %xmm2, %xmm4
+; SSE-NEXT:    movaps {{.*#+}} xmm0 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm0, %xmm3
+; SSE-NEXT:    subps %xmm4, %xmm3
+; SSE-NEXT:    mulps %xmm2, %xmm3
+; SSE-NEXT:    addps %xmm2, %xmm3
+; SSE-NEXT:    rcpps %xmm5, %xmm4
+; SSE-NEXT:    mulps %xmm4, %xmm5
+; SSE-NEXT:    movaps %xmm0, %xmm2
+; SSE-NEXT:    subps %xmm5, %xmm2
+; SSE-NEXT:    mulps %xmm4, %xmm2
+; SSE-NEXT:    addps %xmm4, %xmm2
+; SSE-NEXT:    rcpps %xmm1, %xmm5
+; SSE-NEXT:    mulps %xmm5, %xmm1
+; SSE-NEXT:    movaps %xmm0, %xmm4
+; SSE-NEXT:    subps %xmm1, %xmm4
+; SSE-NEXT:    mulps %xmm5, %xmm4
+; SSE-NEXT:    addps %xmm5, %xmm4
+; SSE-NEXT:    rcpps %xmm6, %xmm1
+; SSE-NEXT:    mulps %xmm1, %xmm6
+; SSE-NEXT:    subps %xmm6, %xmm0
+; SSE-NEXT:    mulps %xmm1, %xmm0
+; SSE-NEXT:    addps %xmm1, %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm4
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm2
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm3
+; SSE-NEXT:    movaps %xmm4, %xmm1
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_one_step2:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vsubps %ymm1, %ymm3, %ymm1
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_one_step2:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_one_step2:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm4 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm4, %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm4, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vaddps %ymm0, %ymm4, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [7:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [7:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_one_step2:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm1, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vrcpps %ymm0, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_one_step2:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm4 # sched: [11:2.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm4 * ymm0) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_one_step2:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    retq # sched: [7:1.00]
+;
+; KNL-LABEL: v16f32_one_step2:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [5:0.50]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_one_step2:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 2.0, float 3.0, float 4.0, float 5.0, float 6.0, float 7.0, float 8.0, float 9.0, float 10.0, float 11.0, float 12.0, float 13.0, float 14.0, float 15.0, float 16.0>, %x
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_one_step_2_divs(<16 x float> %x) #1 {
+; SSE-LABEL: v16f32_one_step_2_divs:
+; SSE:       # %bb.0:
+; SSE-NEXT:    rcpps %xmm0, %xmm6
+; SSE-NEXT:    mulps %xmm6, %xmm0
+; SSE-NEXT:    movaps {{.*#+}} xmm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm4, %xmm5
+; SSE-NEXT:    subps %xmm0, %xmm5
+; SSE-NEXT:    mulps %xmm6, %xmm5
+; SSE-NEXT:    addps %xmm6, %xmm5
+; SSE-NEXT:    rcpps %xmm1, %xmm0
+; SSE-NEXT:    mulps %xmm0, %xmm1
+; SSE-NEXT:    movaps %xmm4, %xmm6
+; SSE-NEXT:    subps %xmm1, %xmm6
+; SSE-NEXT:    mulps %xmm0, %xmm6
+; SSE-NEXT:    addps %xmm0, %xmm6
+; SSE-NEXT:    rcpps %xmm2, %xmm0
+; SSE-NEXT:    mulps %xmm0, %xmm2
+; SSE-NEXT:    movaps %xmm4, %xmm7
+; SSE-NEXT:    subps %xmm2, %xmm7
+; SSE-NEXT:    mulps %xmm0, %xmm7
+; SSE-NEXT:    addps %xmm0, %xmm7
+; SSE-NEXT:    rcpps %xmm3, %xmm0
+; SSE-NEXT:    mulps %xmm0, %xmm3
+; SSE-NEXT:    subps %xmm3, %xmm4
+; SSE-NEXT:    mulps %xmm0, %xmm4
+; SSE-NEXT:    addps %xmm0, %xmm4
+; SSE-NEXT:    movaps {{.*#+}} xmm3 = [1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01]
+; SSE-NEXT:    mulps %xmm4, %xmm3
+; SSE-NEXT:    movaps {{.*#+}} xmm2 = [9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01]
+; SSE-NEXT:    mulps %xmm7, %xmm2
+; SSE-NEXT:    movaps {{.*#+}} xmm1 = [5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00]
+; SSE-NEXT:    mulps %xmm6, %xmm1
+; SSE-NEXT:    movaps {{.*#+}} xmm0 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00]
+; SSE-NEXT:    mulps %xmm5, %xmm0
+; SSE-NEXT:    mulps %xmm5, %xmm0
+; SSE-NEXT:    mulps %xmm6, %xmm1
+; SSE-NEXT:    mulps %xmm7, %xmm2
+; SSE-NEXT:    mulps %xmm4, %xmm3
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_one_step_2_divs:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vsubps %ymm0, %ymm3, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vsubps %ymm1, %ymm3, %ymm1
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm3, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_one_step_2_divs:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3
+; FMA-RECIP-NEXT:    vmulps %ymm0, %ymm3, %ymm0
+; FMA-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_one_step_2_divs:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3 # sched: [7:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2 # sched: [7:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm3, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_one_step_2_divs:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm0, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vrcpps %ymm1, %ymm4 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm4, %ymm1, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm4, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm1, %ymm4, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2 # sched: [12:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3 # sched: [12:1.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm3, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_one_step_2_divs:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm2 * ymm0) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm2 * ymm1) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2 # sched: [12:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3 # sched: [12:0.50]
+; HASWELL-NEXT:    vmulps %ymm0, %ymm3, %ymm0 # sched: [5:0.50]
+; HASWELL-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_one_step_2_divs:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm0, %ymm3, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm4 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm4, %ymm1, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm1, %ymm3, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm4, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm1, %ymm4, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm2 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm3 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm3, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    retq # sched: [7:1.00]
+;
+; KNL-LABEL: v16f32_one_step_2_divs:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [10:1.00]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    vmulps {{.*}}(%rip), %zmm0, %zmm1 # sched: [12:0.50]
+; KNL-NEXT:    vmulps %zmm0, %zmm1, %zmm0 # sched: [5:0.50]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_one_step_2_divs:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    vmulps {{.*}}(%rip), %zmm0, %zmm1 # sched: [11:0.50]
+; SKX-NEXT:    vmulps %zmm0, %zmm1, %zmm0 # sched: [4:0.33]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 2.0, float 3.0, float 4.0, float 5.0, float 6.0, float 7.0, float 8.0, float 9.0, float 10.0, float 11.0, float 12.0, float 13.0, float 14.0, float 15.0, float 16.0>, %x
+  %div2 = fdiv fast <16 x float> %div, %x
+  ret <16 x float> %div2
+}
+
+define <16 x float> @v16f32_two_step2(<16 x float> %x) #2 {
+; SSE-LABEL: v16f32_two_step2:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm3, %xmm6
+; SSE-NEXT:    movaps %xmm2, %xmm5
+; SSE-NEXT:    movaps %xmm0, %xmm4
+; SSE-NEXT:    rcpps %xmm3, %xmm2
+; SSE-NEXT:    mulps %xmm2, %xmm3
+; SSE-NEXT:    movaps {{.*#+}} xmm0 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm0, %xmm7
+; SSE-NEXT:    subps %xmm3, %xmm7
+; SSE-NEXT:    mulps %xmm2, %xmm7
+; SSE-NEXT:    addps %xmm2, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm6
+; SSE-NEXT:    movaps %xmm0, %xmm3
+; SSE-NEXT:    subps %xmm6, %xmm3
+; SSE-NEXT:    mulps %xmm7, %xmm3
+; SSE-NEXT:    addps %xmm7, %xmm3
+; SSE-NEXT:    rcpps %xmm5, %xmm2
+; SSE-NEXT:    movaps %xmm5, %xmm6
+; SSE-NEXT:    mulps %xmm2, %xmm6
+; SSE-NEXT:    movaps %xmm0, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm2, %xmm7
+; SSE-NEXT:    addps %xmm2, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm5
+; SSE-NEXT:    movaps %xmm0, %xmm2
+; SSE-NEXT:    subps %xmm5, %xmm2
+; SSE-NEXT:    mulps %xmm7, %xmm2
+; SSE-NEXT:    addps %xmm7, %xmm2
+; SSE-NEXT:    rcpps %xmm1, %xmm5
+; SSE-NEXT:    movaps %xmm1, %xmm6
+; SSE-NEXT:    mulps %xmm5, %xmm6
+; SSE-NEXT:    movaps %xmm0, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm5, %xmm7
+; SSE-NEXT:    addps %xmm5, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm1
+; SSE-NEXT:    movaps %xmm0, %xmm5
+; SSE-NEXT:    subps %xmm1, %xmm5
+; SSE-NEXT:    mulps %xmm7, %xmm5
+; SSE-NEXT:    addps %xmm7, %xmm5
+; SSE-NEXT:    rcpps %xmm4, %xmm1
+; SSE-NEXT:    movaps %xmm4, %xmm6
+; SSE-NEXT:    mulps %xmm1, %xmm6
+; SSE-NEXT:    movaps %xmm0, %xmm7
+; SSE-NEXT:    subps %xmm6, %xmm7
+; SSE-NEXT:    mulps %xmm1, %xmm7
+; SSE-NEXT:    addps %xmm1, %xmm7
+; SSE-NEXT:    mulps %xmm7, %xmm4
+; SSE-NEXT:    subps %xmm4, %xmm0
+; SSE-NEXT:    mulps %xmm7, %xmm0
+; SSE-NEXT:    addps %xmm7, %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm5
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm2
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm3
+; SSE-NEXT:    movaps %xmm5, %xmm1
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_two_step2:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm3
+; AVX-RECIP-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX-RECIP-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; AVX-RECIP-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; AVX-RECIP-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vsubps %ymm1, %ymm4, %ymm1
+; AVX-RECIP-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vaddps %ymm1, %ymm2, %ymm1
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm3
+; AVX-RECIP-NEXT:    vsubps %ymm3, %ymm4, %ymm3
+; AVX-RECIP-NEXT:    vmulps %ymm3, %ymm2, %ymm3
+; AVX-RECIP-NEXT:    vaddps %ymm3, %ymm2, %ymm2
+; AVX-RECIP-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vsubps %ymm0, %ymm4, %ymm0
+; AVX-RECIP-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vaddps %ymm0, %ymm2, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_two_step2:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm2
+; FMA-RECIP-NEXT:    vmovaps {{.*#+}} ymm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; FMA-RECIP-NEXT:    vmovaps %ymm2, %ymm4
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm1 * ymm4) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm4) + ymm4
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm2
+; FMA-RECIP-NEXT:    vmovaps %ymm2, %ymm4
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm0 * ymm4) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2
+; FMA-RECIP-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm4 * ymm0) + ymm3
+; FMA-RECIP-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm4) + ymm4
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_two_step2:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [5:1.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm1, %ymm4, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:2.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm2 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [7:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vsubps %ymm0, %ymm4, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [7:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_two_step2:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm1, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vmovaps {{.*#+}} ymm4 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00] sched: [7:0.50]
+; SANDY-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm1, %ymm4, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; SANDY-NEXT:    vrcpps %ymm0, %ymm2 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vsubps %ymm0, %ymm4, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:1.00]
+; SANDY-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_two_step2:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vbroadcastss {{.*#+}} ymm3 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NEXT:    vmovaps %ymm2, %ymm4 # sched: [1:1.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm1 * ymm4) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm1 = -(ymm4 * ymm1) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm1 = (ymm1 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NEXT:    vmovaps %ymm2, %ymm4 # sched: [1:1.00]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm4 = -(ymm0 * ymm4) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm4 = (ymm4 * ymm2) + ymm2 sched: [5:0.50]
+; HASWELL-NEXT:    vfnmadd213ps {{.*#+}} ymm0 = -(ymm4 * ymm0) + ymm3 sched: [5:0.50]
+; HASWELL-NEXT:    vfmadd132ps {{.*#+}} ymm0 = (ymm0 * ymm4) + ymm4 sched: [5:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_two_step2:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm2 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm3 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vbroadcastss {{.*#+}} ymm4 = [1,1,1,1,1,1,1,1] sched: [7:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm1, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm1, %ymm4, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm1, %ymm2, %ymm1 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm1, %ymm2, %ymm1 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm2 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm3 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm3, %ymm4, %ymm3 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm3, %ymm2, %ymm3 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm3, %ymm2, %ymm2 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm2, %ymm0, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vsubps %ymm0, %ymm4, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps %ymm0, %ymm2, %ymm0 # sched: [5:0.50]
+; HASWELL-NO-FMA-NEXT:    vaddps %ymm0, %ymm2, %ymm0 # sched: [3:1.00]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    retq # sched: [7:1.00]
+;
+; KNL-LABEL: v16f32_two_step2:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [5:0.50]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_two_step2:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 2.0, float 3.0, float 4.0, float 5.0, float 6.0, float 7.0, float 8.0, float 9.0, float 10.0, float 11.0, float 12.0, float 13.0, float 14.0, float 15.0, float 16.0>, %x
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_no_step(<16 x float> %x) #3 {
+; SSE-LABEL: v16f32_no_step:
+; SSE:       # %bb.0:
+; SSE-NEXT:    rcpps %xmm0, %xmm0
+; SSE-NEXT:    rcpps %xmm1, %xmm1
+; SSE-NEXT:    rcpps %xmm2, %xmm2
+; SSE-NEXT:    rcpps %xmm3, %xmm3
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_no_step:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_no_step:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm0
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_no_step:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_no_step:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm0, %ymm0 # sched: [7:2.00]
+; SANDY-NEXT:    vrcpps %ymm1, %ymm1 # sched: [7:2.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_no_step:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm0 # sched: [11:2.00]
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm1 # sched: [11:2.00]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_no_step:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm0 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm1 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    retq # sched: [7:1.00]
+;
+; KNL-LABEL: v16f32_no_step:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [10:1.00]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_no_step:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %x
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_no_step2(<16 x float> %x) #3 {
+; SSE-LABEL: v16f32_no_step2:
+; SSE:       # %bb.0:
+; SSE-NEXT:    rcpps %xmm3, %xmm3
+; SSE-NEXT:    rcpps %xmm2, %xmm2
+; SSE-NEXT:    rcpps %xmm1, %xmm1
+; SSE-NEXT:    rcpps %xmm0, %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm0
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm1
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm2
+; SSE-NEXT:    mulps {{.*}}(%rip), %xmm3
+; SSE-NEXT:    retq
+;
+; AVX-RECIP-LABEL: v16f32_no_step2:
+; AVX-RECIP:       # %bb.0:
+; AVX-RECIP-NEXT:    vrcpps %ymm1, %ymm1
+; AVX-RECIP-NEXT:    vrcpps %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; AVX-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; AVX-RECIP-NEXT:    retq
+;
+; FMA-RECIP-LABEL: v16f32_no_step2:
+; FMA-RECIP:       # %bb.0:
+; FMA-RECIP-NEXT:    vrcpps %ymm1, %ymm1
+; FMA-RECIP-NEXT:    vrcpps %ymm0, %ymm0
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0
+; FMA-RECIP-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; FMA-RECIP-NEXT:    retq
+;
+; BTVER2-LABEL: v16f32_no_step2:
+; BTVER2:       # %bb.0:
+; BTVER2-NEXT:    vrcpps %ymm1, %ymm1 # sched: [2:2.00]
+; BTVER2-NEXT:    vrcpps %ymm0, %ymm0 # sched: [2:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [7:2.00]
+; BTVER2-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [7:2.00]
+; BTVER2-NEXT:    retq # sched: [4:1.00]
+;
+; SANDY-LABEL: v16f32_no_step2:
+; SANDY:       # %bb.0:
+; SANDY-NEXT:    vrcpps %ymm1, %ymm1 # sched: [7:2.00]
+; SANDY-NEXT:    vrcpps %ymm0, %ymm0 # sched: [7:2.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:1.00]
+; SANDY-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:1.00]
+; SANDY-NEXT:    retq # sched: [1:1.00]
+;
+; HASWELL-LABEL: v16f32_no_step2:
+; HASWELL:       # %bb.0:
+; HASWELL-NEXT:    vrcpps %ymm1, %ymm1 # sched: [11:2.00]
+; HASWELL-NEXT:    vrcpps %ymm0, %ymm0 # sched: [11:2.00]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NEXT:    retq # sched: [7:1.00]
+;
+; HASWELL-NO-FMA-LABEL: v16f32_no_step2:
+; HASWELL-NO-FMA:       # %bb.0:
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm1, %ymm1 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vrcpps %ymm0, %ymm0 # sched: [11:2.00]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm0, %ymm0 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1 # sched: [12:0.50]
+; HASWELL-NO-FMA-NEXT:    retq # sched: [7:1.00]
+;
+; KNL-LABEL: v16f32_no_step2:
+; KNL:       # %bb.0:
+; KNL-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [5:0.50]
+; KNL-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [12:1.00]
+; KNL-NEXT:    retq # sched: [7:1.00]
+;
+; SKX-LABEL: v16f32_no_step2:
+; SKX:       # %bb.0:
+; SKX-NEXT:    vmovaps {{.*#+}} zmm1 = [1.000000e+00,2.000000e+00,3.000000e+00,4.000000e+00,5.000000e+00,6.000000e+00,7.000000e+00,8.000000e+00,9.000000e+00,1.000000e+01,1.100000e+01,1.200000e+01,1.300000e+01,1.400000e+01,1.500000e+01,1.600000e+01] sched: [8:0.50]
+; SKX-NEXT:    vdivps %zmm0, %zmm1, %zmm0 # sched: [18:10.00]
+; SKX-NEXT:    retq # sched: [7:1.00]
+  %div = fdiv fast <16 x float> <float 1.0, float 2.0, float 3.0, float 4.0, float 5.0, float 6.0, float 7.0, float 8.0, float 9.0, float 10.0, float 11.0, float 12.0, float 13.0, float 14.0, float 15.0, float 16.0>, %x
+  ret <16 x float> %div
+}
+
 attributes #0 = { "unsafe-fp-math"="true" "reciprocal-estimates"="!divf,!vec-divf" }
 attributes #1 = { "unsafe-fp-math"="true" "reciprocal-estimates"="divf,vec-divf" }
 attributes #2 = { "unsafe-fp-math"="true" "reciprocal-estimates"="divf:2,vec-divf:2" }

Modified: llvm/trunk/test/CodeGen/X86/sqrt-fastmath.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/sqrt-fastmath.ll?rev=331605&r1=331604&r2=331605&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/sqrt-fastmath.ll (original)
+++ llvm/trunk/test/CodeGen/X86/sqrt-fastmath.ll Sun May  6 10:45:40 2018
@@ -1,6 +1,7 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 | FileCheck %s --check-prefix=CHECK --check-prefix=SSE
-; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX1
+; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f  | FileCheck %s --check-prefix=CHECK --check-prefix=AVX --check-prefix=AVX512
 
 declare double @__sqrt_finite(double)
 declare float @__sqrtf_finite(float)
@@ -8,6 +9,7 @@ declare x86_fp80 @__sqrtl_finite(x86_fp8
 declare float @llvm.sqrt.f32(float)
 declare <4 x float> @llvm.sqrt.v4f32(<4 x float>)
 declare <8 x float> @llvm.sqrt.v8f32(<8 x float>)
+declare <16 x float> @llvm.sqrt.v16f32(<16 x float>)
 
 
 define double @finite_f64_no_estimate(double %d) #0 {
@@ -70,18 +72,31 @@ define float @finite_f32_estimate(float
 ; SSE-NEXT:    andnps %xmm2, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: finite_f32_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
-; AVX-NEXT:    vmulss %xmm1, %xmm0, %xmm2
-; AVX-NEXT:    vmulss %xmm1, %xmm2, %xmm1
-; AVX-NEXT:    vaddss {{.*}}(%rip), %xmm1, %xmm1
-; AVX-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
-; AVX-NEXT:    vmulss %xmm1, %xmm2, %xmm1
-; AVX-NEXT:    vxorps %xmm2, %xmm2, %xmm2
-; AVX-NEXT:    vcmpeqss %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vandnps %xmm1, %xmm0, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: finite_f32_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX1-NEXT:    vmulss %xmm1, %xmm0, %xmm2
+; AVX1-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vaddss {{.*}}(%rip), %xmm1, %xmm1
+; AVX1-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
+; AVX1-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vxorps %xmm2, %xmm2, %xmm2
+; AVX1-NEXT:    vcmpeqss %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vandnps %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: finite_f32_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX512-NEXT:    vmulss %xmm1, %xmm0, %xmm2
+; AVX512-NEXT:    vfmadd213ss {{.*#+}} xmm1 = (xmm2 * xmm1) + mem
+; AVX512-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
+; AVX512-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX512-NEXT:    vxorps %xmm2, %xmm2, %xmm2
+; AVX512-NEXT:    vcmpeqss %xmm2, %xmm0, %k1
+; AVX512-NEXT:    vmovss %xmm2, %xmm0, %xmm1 {%k1}
+; AVX512-NEXT:    vmovaps %xmm1, %xmm0
+; AVX512-NEXT:    retq
   %call = tail call float @__sqrtf_finite(float %f) #2
   ret float %call
 }
@@ -126,18 +141,33 @@ define float @sqrtf_check_denorms(float
 ; SSE-NEXT:    andnps %xmm2, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: sqrtf_check_denorms:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
-; AVX-NEXT:    vmulss %xmm1, %xmm0, %xmm2
-; AVX-NEXT:    vmulss %xmm1, %xmm2, %xmm1
-; AVX-NEXT:    vaddss {{.*}}(%rip), %xmm1, %xmm1
-; AVX-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
-; AVX-NEXT:    vmulss %xmm1, %xmm2, %xmm1
-; AVX-NEXT:    vandps {{.*}}(%rip), %xmm0, %xmm0
-; AVX-NEXT:    vcmpltss {{.*}}(%rip), %xmm0, %xmm0
-; AVX-NEXT:    vandnps %xmm1, %xmm0, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: sqrtf_check_denorms:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX1-NEXT:    vmulss %xmm1, %xmm0, %xmm2
+; AVX1-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vaddss {{.*}}(%rip), %xmm1, %xmm1
+; AVX1-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
+; AVX1-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vandps {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vcmpltss {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vandnps %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: sqrtf_check_denorms:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX512-NEXT:    vmulss %xmm1, %xmm0, %xmm2
+; AVX512-NEXT:    vfmadd213ss {{.*#+}} xmm1 = (xmm2 * xmm1) + mem
+; AVX512-NEXT:    vmulss {{.*}}(%rip), %xmm2, %xmm2
+; AVX512-NEXT:    vmulss %xmm1, %xmm2, %xmm1
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm2 = [NaN,NaN,NaN,NaN]
+; AVX512-NEXT:    vandps %xmm2, %xmm0, %xmm0
+; AVX512-NEXT:    vcmpltss {{.*}}(%rip), %xmm0, %k1
+; AVX512-NEXT:    vxorps %xmm0, %xmm0, %xmm0
+; AVX512-NEXT:    vmovss %xmm0, %xmm0, %xmm1 {%k1}
+; AVX512-NEXT:    vmovaps %xmm1, %xmm0
+; AVX512-NEXT:    retq
   %call = tail call float @__sqrtf_finite(float %x) #2
   ret float %call
 }
@@ -160,19 +190,35 @@ define <4 x float> @sqrt_v4f32_check_den
 ; SSE-NEXT:    movaps %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: sqrt_v4f32_check_denorms:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtps %xmm0, %xmm1
-; AVX-NEXT:    vmulps %xmm1, %xmm0, %xmm2
-; AVX-NEXT:    vmulps {{.*}}(%rip), %xmm2, %xmm3
-; AVX-NEXT:    vmulps %xmm1, %xmm2, %xmm1
-; AVX-NEXT:    vaddps {{.*}}(%rip), %xmm1, %xmm1
-; AVX-NEXT:    vmulps %xmm1, %xmm3, %xmm1
-; AVX-NEXT:    vandps {{.*}}(%rip), %xmm0, %xmm0
-; AVX-NEXT:    vmovaps {{.*#+}} xmm2 = [1.175494e-38,1.175494e-38,1.175494e-38,1.175494e-38]
-; AVX-NEXT:    vcmpleps %xmm0, %xmm2, %xmm0
-; AVX-NEXT:    vandps %xmm1, %xmm0, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: sqrt_v4f32_check_denorms:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtps %xmm0, %xmm1
+; AVX1-NEXT:    vmulps %xmm1, %xmm0, %xmm2
+; AVX1-NEXT:    vmulps {{.*}}(%rip), %xmm2, %xmm3
+; AVX1-NEXT:    vmulps %xmm1, %xmm2, %xmm1
+; AVX1-NEXT:    vaddps {{.*}}(%rip), %xmm1, %xmm1
+; AVX1-NEXT:    vmulps %xmm1, %xmm3, %xmm1
+; AVX1-NEXT:    vandps {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vmovaps {{.*#+}} xmm2 = [1.175494e-38,1.175494e-38,1.175494e-38,1.175494e-38]
+; AVX1-NEXT:    vcmpleps %xmm0, %xmm2, %xmm0
+; AVX1-NEXT:    vandps %xmm1, %xmm0, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: sqrt_v4f32_check_denorms:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtps %xmm0, %xmm1
+; AVX512-NEXT:    vmulps %xmm1, %xmm0, %xmm2
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm3 = [-3,-3,-3,-3]
+; AVX512-NEXT:    vfmadd231ps {{.*#+}} xmm3 = (xmm2 * xmm1) + xmm3
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm1 = [-0.5,-0.5,-0.5,-0.5]
+; AVX512-NEXT:    vmulps %xmm3, %xmm1, %xmm1
+; AVX512-NEXT:    vmulps %xmm1, %xmm2, %xmm1
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm2 = [NaN,NaN,NaN,NaN]
+; AVX512-NEXT:    vandps %xmm2, %xmm0, %xmm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm2 = [1.17549435E-38,1.17549435E-38,1.17549435E-38,1.17549435E-38]
+; AVX512-NEXT:    vcmpleps %xmm0, %xmm2, %xmm0
+; AVX512-NEXT:    vandps %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    retq
   %call = tail call <4 x float> @llvm.sqrt.v4f32(<4 x float> %x) #2
   ret <4 x float> %call
 }
@@ -209,15 +255,24 @@ define float @f32_estimate(float %x) #1
 ; SSE-NEXT:    movaps %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: f32_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
-; AVX-NEXT:    vmulss %xmm1, %xmm1, %xmm2
-; AVX-NEXT:    vmulss %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vaddss {{.*}}(%rip), %xmm0, %xmm0
-; AVX-NEXT:    vmulss {{.*}}(%rip), %xmm1, %xmm1
-; AVX-NEXT:    vmulss %xmm0, %xmm1, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: f32_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX1-NEXT:    vmulss %xmm1, %xmm1, %xmm2
+; AVX1-NEXT:    vmulss %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vaddss {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vmulss {{.*}}(%rip), %xmm1, %xmm1
+; AVX1-NEXT:    vmulss %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: f32_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtss %xmm0, %xmm0, %xmm1
+; AVX512-NEXT:    vmulss %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    vfmadd213ss {{.*#+}} xmm0 = (xmm1 * xmm0) + mem
+; AVX512-NEXT:    vmulss {{.*}}(%rip), %xmm1, %xmm1
+; AVX512-NEXT:    vmulss %xmm0, %xmm1, %xmm0
+; AVX512-NEXT:    retq
   %sqrt = tail call float @llvm.sqrt.f32(float %x)
   %div = fdiv fast float 1.0, %sqrt
   ret float %div
@@ -231,12 +286,19 @@ define <4 x float> @v4f32_no_estimate(<4
 ; SSE-NEXT:    divps %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: v4f32_no_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vsqrtps %xmm0, %xmm0
-; AVX-NEXT:    vmovaps {{.*#+}} xmm1 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
-; AVX-NEXT:    vdivps %xmm0, %xmm1, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: v4f32_no_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vsqrtps %xmm0, %xmm0
+; AVX1-NEXT:    vmovaps {{.*#+}} xmm1 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX1-NEXT:    vdivps %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v4f32_no_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vsqrtps %xmm0, %xmm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm1 = [1,1,1,1]
+; AVX512-NEXT:    vdivps %xmm0, %xmm1, %xmm0
+; AVX512-NEXT:    retq
   %sqrt = tail call <4 x float> @llvm.sqrt.v4f32(<4 x float> %x)
   %div = fdiv fast <4 x float> <float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
   ret <4 x float> %div
@@ -255,15 +317,26 @@ define <4 x float> @v4f32_estimate(<4 x
 ; SSE-NEXT:    movaps %xmm1, %xmm0
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: v4f32_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtps %xmm0, %xmm1
-; AVX-NEXT:    vmulps %xmm1, %xmm1, %xmm2
-; AVX-NEXT:    vmulps %xmm2, %xmm0, %xmm0
-; AVX-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
-; AVX-NEXT:    vmulps {{.*}}(%rip), %xmm1, %xmm1
-; AVX-NEXT:    vmulps %xmm0, %xmm1, %xmm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: v4f32_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtps %xmm0, %xmm1
+; AVX1-NEXT:    vmulps %xmm1, %xmm1, %xmm2
+; AVX1-NEXT:    vmulps %xmm2, %xmm0, %xmm0
+; AVX1-NEXT:    vaddps {{.*}}(%rip), %xmm0, %xmm0
+; AVX1-NEXT:    vmulps {{.*}}(%rip), %xmm1, %xmm1
+; AVX1-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v4f32_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtps %xmm0, %xmm1
+; AVX512-NEXT:    vmulps %xmm1, %xmm0, %xmm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm2 = [-3,-3,-3,-3]
+; AVX512-NEXT:    vfmadd213ps {{.*#+}} xmm0 = (xmm1 * xmm0) + xmm2
+; AVX512-NEXT:    vbroadcastss {{.*#+}} xmm2 = [-0.5,-0.5,-0.5,-0.5]
+; AVX512-NEXT:    vmulps %xmm0, %xmm2, %xmm0
+; AVX512-NEXT:    vmulps %xmm0, %xmm1, %xmm0
+; AVX512-NEXT:    retq
   %sqrt = tail call <4 x float> @llvm.sqrt.v4f32(<4 x float> %x)
   %div = fdiv fast <4 x float> <float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
   ret <4 x float> %div
@@ -280,12 +353,19 @@ define <8 x float> @v8f32_no_estimate(<8
 ; SSE-NEXT:    divps %xmm2, %xmm1
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: v8f32_no_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vsqrtps %ymm0, %ymm0
-; AVX-NEXT:    vmovaps {{.*#+}} ymm1 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
-; AVX-NEXT:    vdivps %ymm0, %ymm1, %ymm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: v8f32_no_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vsqrtps %ymm0, %ymm0
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm1 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX1-NEXT:    vdivps %ymm0, %ymm1, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v8f32_no_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vsqrtps %ymm0, %ymm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} ymm1 = [1,1,1,1,1,1,1,1]
+; AVX512-NEXT:    vdivps %ymm0, %ymm1, %ymm0
+; AVX512-NEXT:    retq
   %sqrt = tail call <8 x float> @llvm.sqrt.v8f32(<8 x float> %x)
   %div = fdiv fast <8 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
   ret <8 x float> %div
@@ -314,20 +394,136 @@ define <8 x float> @v8f32_estimate(<8 x
 ; SSE-NEXT:    movaps %xmm3, %xmm1
 ; SSE-NEXT:    retq
 ;
-; AVX-LABEL: v8f32_estimate:
-; AVX:       # %bb.0:
-; AVX-NEXT:    vrsqrtps %ymm0, %ymm1
-; AVX-NEXT:    vmulps %ymm1, %ymm1, %ymm2
-; AVX-NEXT:    vmulps %ymm2, %ymm0, %ymm0
-; AVX-NEXT:    vaddps {{.*}}(%rip), %ymm0, %ymm0
-; AVX-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
-; AVX-NEXT:    vmulps %ymm0, %ymm1, %ymm0
-; AVX-NEXT:    retq
+; AVX1-LABEL: v8f32_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtps %ymm0, %ymm1
+; AVX1-NEXT:    vmulps %ymm1, %ymm1, %ymm2
+; AVX1-NEXT:    vmulps %ymm2, %ymm0, %ymm0
+; AVX1-NEXT:    vaddps {{.*}}(%rip), %ymm0, %ymm0
+; AVX1-NEXT:    vmulps {{.*}}(%rip), %ymm1, %ymm1
+; AVX1-NEXT:    vmulps %ymm0, %ymm1, %ymm0
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v8f32_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vrsqrtps %ymm0, %ymm1
+; AVX512-NEXT:    vmulps %ymm1, %ymm0, %ymm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} ymm2 = [-3,-3,-3,-3,-3,-3,-3,-3]
+; AVX512-NEXT:    vfmadd213ps {{.*#+}} ymm0 = (ymm1 * ymm0) + ymm2
+; AVX512-NEXT:    vbroadcastss {{.*#+}} ymm2 = [-0.5,-0.5,-0.5,-0.5,-0.5,-0.5,-0.5,-0.5]
+; AVX512-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX512-NEXT:    vmulps %ymm0, %ymm1, %ymm0
+; AVX512-NEXT:    retq
   %sqrt = tail call <8 x float> @llvm.sqrt.v8f32(<8 x float> %x)
   %div = fdiv fast <8 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
   ret <8 x float> %div
 }
 
+define <16 x float> @v16f32_no_estimate(<16 x float> %x) #0 {
+; SSE-LABEL: v16f32_no_estimate:
+; SSE:       # %bb.0:
+; SSE-NEXT:    sqrtps %xmm3, %xmm4
+; SSE-NEXT:    sqrtps %xmm2, %xmm5
+; SSE-NEXT:    sqrtps %xmm1, %xmm2
+; SSE-NEXT:    sqrtps %xmm0, %xmm1
+; SSE-NEXT:    movaps {{.*#+}} xmm3 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; SSE-NEXT:    movaps %xmm3, %xmm0
+; SSE-NEXT:    divps %xmm1, %xmm0
+; SSE-NEXT:    movaps %xmm3, %xmm1
+; SSE-NEXT:    divps %xmm2, %xmm1
+; SSE-NEXT:    movaps %xmm3, %xmm2
+; SSE-NEXT:    divps %xmm5, %xmm2
+; SSE-NEXT:    divps %xmm4, %xmm3
+; SSE-NEXT:    retq
+;
+; AVX1-LABEL: v16f32_no_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vsqrtps %ymm1, %ymm1
+; AVX1-NEXT:    vsqrtps %ymm0, %ymm0
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm2 = [1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00,1.000000e+00]
+; AVX1-NEXT:    vdivps %ymm0, %ymm2, %ymm0
+; AVX1-NEXT:    vdivps %ymm1, %ymm2, %ymm1
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v16f32_no_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vsqrtps %zmm0, %zmm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
+; AVX512-NEXT:    vdivps %zmm0, %zmm1, %zmm0
+; AVX512-NEXT:    retq
+  %sqrt = tail call <16 x float> @llvm.sqrt.v16f32(<16 x float> %x)
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
+  ret <16 x float> %div
+}
+
+define <16 x float> @v16f32_estimate(<16 x float> %x) #1 {
+; SSE-LABEL: v16f32_estimate:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm1, %xmm4
+; SSE-NEXT:    movaps %xmm0, %xmm1
+; SSE-NEXT:    rsqrtps %xmm0, %xmm5
+; SSE-NEXT:    movaps {{.*#+}} xmm6 = [-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01]
+; SSE-NEXT:    movaps %xmm5, %xmm0
+; SSE-NEXT:    mulps %xmm5, %xmm0
+; SSE-NEXT:    mulps %xmm1, %xmm0
+; SSE-NEXT:    movaps {{.*#+}} xmm7 = [-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00]
+; SSE-NEXT:    addps %xmm7, %xmm0
+; SSE-NEXT:    mulps %xmm6, %xmm0
+; SSE-NEXT:    mulps %xmm5, %xmm0
+; SSE-NEXT:    rsqrtps %xmm4, %xmm5
+; SSE-NEXT:    movaps %xmm5, %xmm1
+; SSE-NEXT:    mulps %xmm5, %xmm1
+; SSE-NEXT:    mulps %xmm4, %xmm1
+; SSE-NEXT:    addps %xmm7, %xmm1
+; SSE-NEXT:    mulps %xmm6, %xmm1
+; SSE-NEXT:    mulps %xmm5, %xmm1
+; SSE-NEXT:    rsqrtps %xmm2, %xmm5
+; SSE-NEXT:    movaps %xmm5, %xmm4
+; SSE-NEXT:    mulps %xmm5, %xmm4
+; SSE-NEXT:    mulps %xmm2, %xmm4
+; SSE-NEXT:    addps %xmm7, %xmm4
+; SSE-NEXT:    mulps %xmm6, %xmm4
+; SSE-NEXT:    mulps %xmm5, %xmm4
+; SSE-NEXT:    rsqrtps %xmm3, %xmm2
+; SSE-NEXT:    movaps %xmm2, %xmm5
+; SSE-NEXT:    mulps %xmm2, %xmm5
+; SSE-NEXT:    mulps %xmm3, %xmm5
+; SSE-NEXT:    addps %xmm7, %xmm5
+; SSE-NEXT:    mulps %xmm6, %xmm5
+; SSE-NEXT:    mulps %xmm2, %xmm5
+; SSE-NEXT:    movaps %xmm4, %xmm2
+; SSE-NEXT:    movaps %xmm5, %xmm3
+; SSE-NEXT:    retq
+;
+; AVX1-LABEL: v16f32_estimate:
+; AVX1:       # %bb.0:
+; AVX1-NEXT:    vrsqrtps %ymm0, %ymm2
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm3 = [-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01,-5.000000e-01]
+; AVX1-NEXT:    vmulps %ymm2, %ymm2, %ymm4
+; AVX1-NEXT:    vmulps %ymm4, %ymm0, %ymm0
+; AVX1-NEXT:    vmovaps {{.*#+}} ymm4 = [-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00,-3.000000e+00]
+; AVX1-NEXT:    vaddps %ymm4, %ymm0, %ymm0
+; AVX1-NEXT:    vmulps %ymm0, %ymm3, %ymm0
+; AVX1-NEXT:    vmulps %ymm0, %ymm2, %ymm0
+; AVX1-NEXT:    vrsqrtps %ymm1, %ymm2
+; AVX1-NEXT:    vmulps %ymm2, %ymm2, %ymm5
+; AVX1-NEXT:    vmulps %ymm5, %ymm1, %ymm1
+; AVX1-NEXT:    vaddps %ymm4, %ymm1, %ymm1
+; AVX1-NEXT:    vmulps %ymm1, %ymm3, %ymm1
+; AVX1-NEXT:    vmulps %ymm1, %ymm2, %ymm1
+; AVX1-NEXT:    retq
+;
+; AVX512-LABEL: v16f32_estimate:
+; AVX512:       # %bb.0:
+; AVX512-NEXT:    vsqrtps %zmm0, %zmm0
+; AVX512-NEXT:    vbroadcastss {{.*#+}} zmm1 = [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
+; AVX512-NEXT:    vdivps %zmm0, %zmm1, %zmm0
+; AVX512-NEXT:    retq
+  %sqrt = tail call <16 x float> @llvm.sqrt.v16f32(<16 x float> %x)
+  %div = fdiv fast <16 x float> <float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0, float 1.0>, %sqrt
+  ret <16 x float> %div
+}
+
 
 attributes #0 = { "unsafe-fp-math"="true" "reciprocal-estimates"="!sqrtf,!vec-sqrtf,!divf,!vec-divf" }
 attributes #1 = { "unsafe-fp-math"="true" "reciprocal-estimates"="sqrt,vec-sqrt" }




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