-; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -enable-unsafe-fp-math | FileCheck %s
-; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 | FileCheck -check-prefix=CHECK-SAFE %s
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -enable-unsafe-fp-math -mattr=-vsx | FileCheck %s
+; RUN: llc < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -mattr=-vsx | FileCheck -check-prefix=CHECK-SAFE %s
target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-f128:128:128-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
declare <4 x float> @llvm.sqrt.v4f32(<4 x float>)
define double @foo(double %a, double %b) nounwind {
-entry:
%x = call double @llvm.sqrt.f64(double %b)
%r = fdiv double %a, %x
ret double %r
; CHECK-DAG: frsqrte
; CHECK-DAG: fnmsub
; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: fmul
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmul
; CHECK: blr
; CHECK-SAFE: @foo
}
define double @foof(double %a, float %b) nounwind {
-entry:
%x = call float @llvm.sqrt.f32(float %b)
%y = fpext float %x to double
%r = fdiv double %a, %y
; CHECK-DAG: frsqrtes
; CHECK-DAG: fnmsubs
; CHECK: fmuls
-; CHECK: fmadds
-; CHECK: fmuls
-; CHECK: fmul
-; CHECK: blr
+; CHECK-NEXT: fmadds
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: fmul
+; CHECK-NEXT: blr
; CHECK-SAFE: @foof
; CHECK-SAFE: fsqrts
}
define float @food(float %a, double %b) nounwind {
-entry:
%x = call double @llvm.sqrt.f64(double %b)
%y = fptrunc double %x to float
%r = fdiv float %a, %y
; CHECK-DAG: frsqrte
; CHECK-DAG: fnmsub
; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: frsp
-; CHECK: fmuls
-; CHECK: blr
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: frsp
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: blr
; CHECK-SAFE: @foo
; CHECK-SAFE: fsqrt
}
define float @goo(float %a, float %b) nounwind {
-entry:
%x = call float @llvm.sqrt.f32(float %b)
%r = fdiv float %a, %x
ret float %r
; CHECK-DAG: frsqrtes
; CHECK-DAG: fnmsubs
; CHECK: fmuls
-; CHECK: fmadds
-; CHECK: fmuls
-; CHECK: fmuls
-; CHECK: blr
+; CHECK-NEXT: fmadds
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: blr
; CHECK-SAFE: @goo
; CHECK-SAFE: fsqrts
; CHECK-SAFE: blr
}
+; Recognize that this is rsqrt(a) * rcp(b) * c,
+; not 1 / ( 1 / sqrt(a)) * rcp(b) * c.
+define float @rsqrt_fmul(float %a, float %b, float %c) {
+ %x = call float @llvm.sqrt.f32(float %a)
+ %y = fmul float %x, %b
+ %z = fdiv float %c, %y
+ ret float %z
+
+; CHECK: @rsqrt_fmul
+; CHECK-DAG: frsqrtes
+; CHECK-DAG: fres
+; CHECK-DAG: fnmsubs
+; CHECK-DAG: fmuls
+; CHECK-DAG: fnmsubs
+; CHECK-DAG: fmadds
+; CHECK-DAG: fmadds
+; CHECK: fmuls
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: blr
+
+; CHECK-SAFE: @rsqrt_fmul
+; CHECK-SAFE: fsqrts
+; CHECK-SAFE: fmuls
+; CHECK-SAFE: fdivs
+; CHECK-SAFE: blr
+}
+
define <4 x float> @hoo(<4 x float> %a, <4 x float> %b) nounwind {
-entry:
%x = call <4 x float> @llvm.sqrt.v4f32(<4 x float> %b)
%r = fdiv <4 x float> %a, %x
ret <4 x float> %r
}
define double @foo2(double %a, double %b) nounwind {
-entry:
%r = fdiv double %a, %b
ret double %r
; CHECK-DAG: fre
; CHECK-DAG: fnmsub
; CHECK: fmadd
-; CHECK: fnmsub
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: blr
+; CHECK-NEXT: fnmsub
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: blr
; CHECK-SAFE: @foo2
; CHECK-SAFE: fdiv
}
define float @goo2(float %a, float %b) nounwind {
-entry:
%r = fdiv float %a, %b
ret float %r
; CHECK-DAG: fres
; CHECK-DAG: fnmsubs
; CHECK: fmadds
-; CHECK: fmuls
-; CHECK: blr
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: blr
; CHECK-SAFE: @goo2
; CHECK-SAFE: fdivs
}
define <4 x float> @hoo2(<4 x float> %a, <4 x float> %b) nounwind {
-entry:
%r = fdiv <4 x float> %a, %b
ret <4 x float> %r
}
define double @foo3(double %a) nounwind {
-entry:
%r = call double @llvm.sqrt.f64(double %a)
ret double %r
; CHECK: @foo3
+; CHECK: fcmpu
; CHECK-DAG: frsqrte
; CHECK-DAG: fnmsub
; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: fmul
-; CHECK: fmadd
-; CHECK: fmul
-; CHECK: fre
-; CHECK: fnmsub
-; CHECK: fmadd
-; CHECK: fnmsub
-; CHECK: fmadd
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmadd
+; CHECK-NEXT: fmul
+; CHECK-NEXT: fmul
; CHECK: blr
; CHECK-SAFE: @foo3
}
define float @goo3(float %a) nounwind {
-entry:
%r = call float @llvm.sqrt.f32(float %a)
ret float %r
; CHECK: @goo3
+; CHECK: fcmpu
; CHECK-DAG: frsqrtes
; CHECK-DAG: fnmsubs
; CHECK: fmuls
-; CHECK: fmadds
-; CHECK: fmuls
-; CHECK: fres
-; CHECK: fnmsubs
-; CHECK: fmadds
+; CHECK-NEXT: fmadds
+; CHECK-NEXT: fmuls
+; CHECK-NEXT: fmuls
; CHECK: blr
; CHECK-SAFE: @goo3
}
define <4 x float> @hoo3(<4 x float> %a) nounwind {
-entry:
%r = call <4 x float> @llvm.sqrt.v4f32(<4 x float> %a)
ret <4 x float> %r
; CHECK: @hoo3
; CHECK: vrsqrtefp
-; CHECK: vrefp
+; CHECK-DAG: vcmpeqfp
; CHECK-SAFE: @hoo3
; CHECK-SAFE-NOT: vrsqrtefp