mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 07:29:55 +00:00
E.g., ( a / D; b / D ) -> ( recip = 1.0 / D; a * recip; b * recip) A hook is added to allow the target to control whether it needs to do such combine. Reviewed in http://reviews.llvm.org/D6334 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222510 91177308-0d34-0410-b5e6-96231b3b80d8
95 lines
2.6 KiB
LLVM
95 lines
2.6 KiB
LLVM
; RUN: llc -march=aarch64 < %s | FileCheck %s
|
|
|
|
; Following test cases check:
|
|
; a / D; b / D; c / D;
|
|
; =>
|
|
; recip = 1.0 / D; a * recip; b * recip; c * recip;
|
|
define void @three_fdiv_float(float %D, float %a, float %b, float %c) #0 {
|
|
; CHECK-LABEL: three_fdiv_float:
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fdiv
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
%div = fdiv float %a, %D
|
|
%div1 = fdiv float %b, %D
|
|
%div2 = fdiv float %c, %D
|
|
tail call void @foo_3f(float %div, float %div1, float %div2)
|
|
ret void
|
|
}
|
|
|
|
define void @three_fdiv_double(double %D, double %a, double %b, double %c) #0 {
|
|
; CHECK-LABEL: three_fdiv_double:
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fdiv
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
%div = fdiv double %a, %D
|
|
%div1 = fdiv double %b, %D
|
|
%div2 = fdiv double %c, %D
|
|
tail call void @foo_3d(double %div, double %div1, double %div2)
|
|
ret void
|
|
}
|
|
|
|
define void @three_fdiv_4xfloat(<4 x float> %D, <4 x float> %a, <4 x float> %b, <4 x float> %c) #0 {
|
|
; CHECK-LABEL: three_fdiv_4xfloat:
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fdiv
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
%div = fdiv <4 x float> %a, %D
|
|
%div1 = fdiv <4 x float> %b, %D
|
|
%div2 = fdiv <4 x float> %c, %D
|
|
tail call void @foo_3_4xf(<4 x float> %div, <4 x float> %div1, <4 x float> %div2)
|
|
ret void
|
|
}
|
|
|
|
define void @three_fdiv_2xdouble(<2 x double> %D, <2 x double> %a, <2 x double> %b, <2 x double> %c) #0 {
|
|
; CHECK-LABEL: three_fdiv_2xdouble:
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fdiv
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
; CHECK: fmul
|
|
%div = fdiv <2 x double> %a, %D
|
|
%div1 = fdiv <2 x double> %b, %D
|
|
%div2 = fdiv <2 x double> %c, %D
|
|
tail call void @foo_3_2xd(<2 x double> %div, <2 x double> %div1, <2 x double> %div2)
|
|
ret void
|
|
}
|
|
|
|
; Following test cases check we never combine two FDIVs if neither of them
|
|
; calculates a reciprocal.
|
|
define void @two_fdiv_float(float %D, float %a, float %b) #0 {
|
|
; CHECK-LABEL: two_fdiv_float:
|
|
; CHECK: fdiv
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fmul
|
|
%div = fdiv float %a, %D
|
|
%div1 = fdiv float %b, %D
|
|
tail call void @foo_2f(float %div, float %div1)
|
|
ret void
|
|
}
|
|
|
|
define void @two_fdiv_double(double %D, double %a, double %b) #0 {
|
|
; CHECK-LABEL: two_fdiv_double:
|
|
; CHECK: fdiv
|
|
; CHECK: fdiv
|
|
; CHECK-NEXT-NOT: fmul
|
|
%div = fdiv double %a, %D
|
|
%div1 = fdiv double %b, %D
|
|
tail call void @foo_2d(double %div, double %div1)
|
|
ret void
|
|
}
|
|
|
|
declare void @foo_3f(float, float, float)
|
|
declare void @foo_3d(double, double, double)
|
|
declare void @foo_3_4xf(<4 x float>, <4 x float>, <4 x float>)
|
|
declare void @foo_3_2xd(<2 x double>, <2 x double>, <2 x double>)
|
|
declare void @foo_2f(float, float)
|
|
declare void @foo_2d(double, double)
|
|
|
|
attributes #0 = { "unsafe-fp-math"="true" }
|