1; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mcpu=nehalem | FileCheck %s --check-prefix=SCALAR-EST --check-prefix=VECTOR-EST 2; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mcpu=sandybridge | FileCheck %s --check-prefix=SCALAR-ACC --check-prefix=VECTOR-EST 3; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mcpu=broadwell | FileCheck %s --check-prefix=SCALAR-ACC --check-prefix=VECTOR-EST 4; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mcpu=skylake | FileCheck %s --check-prefix=SCALAR-ACC --check-prefix=VECTOR-ACC 5 6; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mattr=+fast-scalar-fsqrt,-fast-vector-fsqrt | FileCheck %s --check-prefix=SCALAR-ACC --check-prefix=VECTOR-EST 7; RUN: llc < %s -mtriple=x86_64-unknown-unknown -O2 -mattr=-fast-scalar-fsqrt,+fast-vector-fsqrt | FileCheck %s --check-prefix=SCALAR-EST --check-prefix=VECTOR-ACC 8 9declare float @llvm.sqrt.f32(float) #0 10declare <4 x float> @llvm.sqrt.v4f32(<4 x float>) #0 11declare <8 x float> @llvm.sqrt.v8f32(<8 x float>) #0 12 13define float @foo_x1(float %f) #0 { 14; SCALAR-EST-LABEL: foo_x1: 15; SCALAR-EST: # %bb.0: 16; SCALAR-EST-NEXT: rsqrtss %xmm0 17; SCALAR-EST: retq 18; 19; SCALAR-ACC-LABEL: foo_x1: 20; SCALAR-ACC: # %bb.0: 21; SCALAR-ACC-NEXT: {{^ *v?sqrtss %xmm0}} 22; SCALAR-ACC-NEXT: retq 23 %call = tail call float @llvm.sqrt.f32(float %f) #1 24 ret float %call 25} 26 27define <4 x float> @foo_x4(<4 x float> %f) #0 { 28; VECTOR-EST-LABEL: foo_x4: 29; VECTOR-EST: # %bb.0: 30; VECTOR-EST-NEXT: rsqrtps %xmm0 31; VECTOR-EST: retq 32; 33; VECTOR-ACC-LABEL: foo_x4: 34; VECTOR-ACC: # %bb.0: 35; VECTOR-ACC-NEXT: {{^ *v?sqrtps %xmm0}} 36; VECTOR-ACC-NEXT: retq 37 %call = tail call <4 x float> @llvm.sqrt.v4f32(<4 x float> %f) #1 38 ret <4 x float> %call 39} 40 41define <8 x float> @foo_x8(<8 x float> %f) #0 { 42; VECTOR-EST-LABEL: foo_x8: 43; VECTOR-EST: # %bb.0: 44; VECTOR-EST-NEXT: rsqrtps 45; VECTOR-EST: retq 46; 47; VECTOR-ACC-LABEL: foo_x8: 48; VECTOR-ACC: # %bb.0: 49; VECTOR-ACC-NEXT: {{^ *v?sqrtps %[xy]mm0}} 50; VECTOR-ACC-NOT: rsqrt 51; VECTOR-ACC: retq 52 %call = tail call <8 x float> @llvm.sqrt.v8f32(<8 x float> %f) #1 53 ret <8 x float> %call 54} 55 56attributes #0 = { "unsafe-fp-math"="true" } 57attributes #1 = { nounwind readnone } 58