mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
aea884eb82
The motivation for the change is that we can't have pseudo-global settings for
codegen living in TargetOptions because that doesn't work with LTO.
Ideally, these reciprocal attributes will be moved to the instruction-level via
FMF, metadata, or something else. But making them function attributes is at least
an improvement over the current state.
The ingredients of this patch are:
Remove the reciprocal estimate command-line debug option.
Add TargetRecip to TargetLowering.
Remove TargetRecip from TargetOptions.
Clean up the TargetRecip implementation to work with this new scheme.
Set the default reciprocal settings in TargetLoweringBase (everything is off).
Update the PowerPC defaults, users, and tests.
Update the x86 defaults, users, and tests.
Note that if this patch needs to be reverted, the related clang patch checked in
at r283251 should be reverted too.
Differential Revision: https://reviews.llvm.org/D24816
llvm-svn: 283252
271 lines
5.4 KiB
LLVM
271 lines
5.4 KiB
LLVM
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr7 -enable-unsafe-fp-math -mattr=-vsx | FileCheck %s
|
|
; RUN: llc -verify-machineinstrs < %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 double @llvm.sqrt.f64(double)
|
|
declare float @llvm.sqrt.f32(float)
|
|
declare <4 x float> @llvm.sqrt.v4f32(<4 x float>)
|
|
|
|
define double @foo(double %a, double %b) nounwind {
|
|
%x = call double @llvm.sqrt.f64(double %b)
|
|
%r = fdiv double %a, %x
|
|
ret double %r
|
|
|
|
; CHECK: @foo
|
|
; CHECK-DAG: frsqrte
|
|
; CHECK-DAG: fnmsub
|
|
; 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
|
|
; CHECK-SAFE: fsqrt
|
|
; CHECK-SAFE: fdiv
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define double @no_estimate_refinement_f64(double %a, double %b) #0 {
|
|
%x = call double @llvm.sqrt.f64(double %b)
|
|
%r = fdiv double %a, %x
|
|
ret double %r
|
|
|
|
; CHECK-LABEL: @no_estimate_refinement_f64
|
|
; CHECK: frsqrte
|
|
; CHECK-NOT: fmadd
|
|
; CHECK: fmul
|
|
; CHECK-NOT: fmadd
|
|
; CHECK: blr
|
|
}
|
|
|
|
|
|
define double @foof(double %a, float %b) nounwind {
|
|
%x = call float @llvm.sqrt.f32(float %b)
|
|
%y = fpext float %x to double
|
|
%r = fdiv double %a, %y
|
|
ret double %r
|
|
|
|
; CHECK: @foof
|
|
; CHECK-DAG: frsqrtes
|
|
; CHECK-DAG: fnmsubs
|
|
; CHECK: fmuls
|
|
; CHECK-NEXT: fmadds
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK-NEXT: fmul
|
|
; CHECK-NEXT: blr
|
|
|
|
; CHECK-SAFE: @foof
|
|
; CHECK-SAFE: fsqrts
|
|
; CHECK-SAFE: fdiv
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define float @food(float %a, double %b) nounwind {
|
|
%x = call double @llvm.sqrt.f64(double %b)
|
|
%y = fptrunc double %x to float
|
|
%r = fdiv float %a, %y
|
|
ret float %r
|
|
|
|
; CHECK: @foo
|
|
; CHECK-DAG: frsqrte
|
|
; CHECK-DAG: fnmsub
|
|
; CHECK: fmul
|
|
; 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
|
|
; CHECK-SAFE: fdivs
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define float @goo(float %a, float %b) nounwind {
|
|
%x = call float @llvm.sqrt.f32(float %b)
|
|
%r = fdiv float %a, %x
|
|
ret float %r
|
|
|
|
; CHECK: @goo
|
|
; CHECK-DAG: frsqrtes
|
|
; CHECK-DAG: fnmsubs
|
|
; CHECK: fmuls
|
|
; CHECK-NEXT: fmadds
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK-NEXT: blr
|
|
|
|
; CHECK-SAFE: @goo
|
|
; CHECK-SAFE: fsqrts
|
|
; CHECK-SAFE: fdivs
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
|
|
define float @no_estimate_refinement_f32(float %a, float %b) #0 {
|
|
%x = call float @llvm.sqrt.f32(float %b)
|
|
%r = fdiv float %a, %x
|
|
ret float %r
|
|
|
|
; CHECK-LABEL: @no_estimate_refinement_f32
|
|
; CHECK: frsqrtes
|
|
; CHECK-NOT: fmadds
|
|
; CHECK: fmuls
|
|
; CHECK-NOT: fmadds
|
|
; CHECK: 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 {
|
|
%x = call <4 x float> @llvm.sqrt.v4f32(<4 x float> %b)
|
|
%r = fdiv <4 x float> %a, %x
|
|
ret <4 x float> %r
|
|
|
|
; CHECK: @hoo
|
|
; CHECK: vrsqrtefp
|
|
|
|
; CHECK-SAFE: @hoo
|
|
; CHECK-SAFE-NOT: vrsqrtefp
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define double @foo2(double %a, double %b) nounwind {
|
|
%r = fdiv double %a, %b
|
|
ret double %r
|
|
|
|
; CHECK: @foo2
|
|
; CHECK-DAG: fre
|
|
; CHECK-DAG: fnmsub
|
|
; CHECK: fmadd
|
|
; CHECK-NEXT: fnmsub
|
|
; CHECK-NEXT: fmadd
|
|
; CHECK-NEXT: fmul
|
|
; CHECK-NEXT: blr
|
|
|
|
; CHECK-SAFE: @foo2
|
|
; CHECK-SAFE: fdiv
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define float @goo2(float %a, float %b) nounwind {
|
|
%r = fdiv float %a, %b
|
|
ret float %r
|
|
|
|
; CHECK: @goo2
|
|
; CHECK-DAG: fres
|
|
; CHECK-DAG: fnmsubs
|
|
; CHECK: fmadds
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK-NEXT: blr
|
|
|
|
; CHECK-SAFE: @goo2
|
|
; CHECK-SAFE: fdivs
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define <4 x float> @hoo2(<4 x float> %a, <4 x float> %b) nounwind {
|
|
%r = fdiv <4 x float> %a, %b
|
|
ret <4 x float> %r
|
|
|
|
; CHECK: @hoo2
|
|
; CHECK: vrefp
|
|
|
|
; CHECK-SAFE: @hoo2
|
|
; CHECK-SAFE-NOT: vrefp
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define double @foo3(double %a) nounwind {
|
|
%r = call double @llvm.sqrt.f64(double %a)
|
|
ret double %r
|
|
|
|
; CHECK: @foo3
|
|
; CHECK: fcmpu
|
|
; CHECK-DAG: frsqrte
|
|
; CHECK-DAG: fnmsub
|
|
; CHECK: fmul
|
|
; CHECK-NEXT: fmadd
|
|
; CHECK-NEXT: fmul
|
|
; CHECK-NEXT: fmul
|
|
; CHECK-NEXT: fmadd
|
|
; CHECK-NEXT: fmul
|
|
; CHECK-NEXT: fmul
|
|
; CHECK: blr
|
|
|
|
; CHECK-SAFE: @foo3
|
|
; CHECK-SAFE: fsqrt
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define float @goo3(float %a) nounwind {
|
|
%r = call float @llvm.sqrt.f32(float %a)
|
|
ret float %r
|
|
|
|
; CHECK: @goo3
|
|
; CHECK: fcmpu
|
|
; CHECK-DAG: frsqrtes
|
|
; CHECK-DAG: fnmsubs
|
|
; CHECK: fmuls
|
|
; CHECK-NEXT: fmadds
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK-NEXT: fmuls
|
|
; CHECK: blr
|
|
|
|
; CHECK-SAFE: @goo3
|
|
; CHECK-SAFE: fsqrts
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
define <4 x float> @hoo3(<4 x float> %a) nounwind {
|
|
%r = call <4 x float> @llvm.sqrt.v4f32(<4 x float> %a)
|
|
ret <4 x float> %r
|
|
|
|
; CHECK: @hoo3
|
|
; CHECK: vrsqrtefp
|
|
; CHECK-DAG: vcmpeqfp
|
|
|
|
; CHECK-SAFE: @hoo3
|
|
; CHECK-SAFE-NOT: vrsqrtefp
|
|
; CHECK-SAFE: blr
|
|
}
|
|
|
|
attributes #0 = { nounwind "reciprocal-estimates"="sqrtf:0,sqrtd:0" }
|
|
|