mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-15 20:29:48 +00:00
912be27c05
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@234413 91177308-0d34-0410-b5e6-96231b3b80d8
110 lines
2.6 KiB
LLVM
110 lines
2.6 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=sse2 | FileCheck %s
|
|
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx,use-recip-est | FileCheck %s --check-prefix=RECIP
|
|
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx,use-recip-est -x86-recip-refinement-steps=2 | FileCheck %s --check-prefix=REFINE
|
|
|
|
; If the target's divss/divps instructions are substantially
|
|
; slower than rcpss/rcpps with a Newton-Raphson refinement,
|
|
; we should generate the estimate sequence.
|
|
|
|
; See PR21385 ( http://llvm.org/bugs/show_bug.cgi?id=21385 )
|
|
; for details about the accuracy, speed, and implementation
|
|
; differences of x86 reciprocal estimates.
|
|
|
|
define float @reciprocal_estimate(float %x) #0 {
|
|
%div = fdiv fast float 1.0, %x
|
|
ret float %div
|
|
|
|
; CHECK-LABEL: reciprocal_estimate:
|
|
; CHECK: movss
|
|
; CHECK-NEXT: divss
|
|
; CHECK-NEXT: movaps
|
|
; CHECK-NEXT: retq
|
|
|
|
; RECIP-LABEL: reciprocal_estimate:
|
|
; RECIP: vrcpss
|
|
; RECIP: vmulss
|
|
; RECIP: vsubss
|
|
; RECIP: vmulss
|
|
; RECIP: vaddss
|
|
; RECIP-NEXT: retq
|
|
|
|
; REFINE-LABEL: reciprocal_estimate:
|
|
; REFINE: vrcpss
|
|
; REFINE: vmulss
|
|
; REFINE: vsubss
|
|
; REFINE: vmulss
|
|
; REFINE: vaddss
|
|
; REFINE: vmulss
|
|
; REFINE: vsubss
|
|
; REFINE: vmulss
|
|
; REFINE: vaddss
|
|
; REFINE-NEXT: retq
|
|
}
|
|
|
|
define <4 x float> @reciprocal_estimate_v4f32(<4 x float> %x) #0 {
|
|
%div = fdiv fast <4 x float> <float 1.0, float 1.0, float 1.0, float 1.0>, %x
|
|
ret <4 x float> %div
|
|
|
|
; CHECK-LABEL: reciprocal_estimate_v4f32:
|
|
; CHECK: movaps
|
|
; CHECK-NEXT: divps
|
|
; CHECK-NEXT: movaps
|
|
; CHECK-NEXT: retq
|
|
|
|
; RECIP-LABEL: reciprocal_estimate_v4f32:
|
|
; RECIP: vrcpps
|
|
; RECIP: vmulps
|
|
; RECIP: vsubps
|
|
; RECIP: vmulps
|
|
; RECIP: vaddps
|
|
; RECIP-NEXT: retq
|
|
|
|
; REFINE-LABEL: reciprocal_estimate_v4f32:
|
|
; REFINE: vrcpps
|
|
; REFINE: vmulps
|
|
; REFINE: vsubps
|
|
; REFINE: vmulps
|
|
; REFINE: vaddps
|
|
; REFINE: vmulps
|
|
; REFINE: vsubps
|
|
; REFINE: vmulps
|
|
; REFINE: vaddps
|
|
; REFINE-NEXT: retq
|
|
}
|
|
|
|
define <8 x float> @reciprocal_estimate_v8f32(<8 x float> %x) #0 {
|
|
%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>, %x
|
|
ret <8 x float> %div
|
|
|
|
; CHECK-LABEL: reciprocal_estimate_v8f32:
|
|
; CHECK: movaps
|
|
; CHECK: movaps
|
|
; CHECK-NEXT: divps
|
|
; CHECK-NEXT: divps
|
|
; CHECK-NEXT: movaps
|
|
; CHECK-NEXT: movaps
|
|
; CHECK-NEXT: retq
|
|
|
|
; RECIP-LABEL: reciprocal_estimate_v8f32:
|
|
; RECIP: vrcpps
|
|
; RECIP: vmulps
|
|
; RECIP: vsubps
|
|
; RECIP: vmulps
|
|
; RECIP: vaddps
|
|
; RECIP-NEXT: retq
|
|
|
|
; REFINE-LABEL: reciprocal_estimate_v8f32:
|
|
; REFINE: vrcpps
|
|
; REFINE: vmulps
|
|
; REFINE: vsubps
|
|
; REFINE: vmulps
|
|
; REFINE: vaddps
|
|
; REFINE: vmulps
|
|
; REFINE: vsubps
|
|
; REFINE: vmulps
|
|
; REFINE: vaddps
|
|
; REFINE-NEXT: retq
|
|
}
|
|
|
|
attributes #0 = { "unsafe-fp-math"="true" }
|