maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[AArch64] More @llvm.fma.f16 tests 

Follow up of rL371321 that added FMA FP16 patterns. This adds more tests
for @llvm.fma.f16. This probably shows we miss one fmsub optimisation
opportunity, which I will look into.

llvm-svn: 371833
This commit is contained in:
Sjoerd Meijer 2019-09-13 09:44:13 +00:00
parent ea27b932b5
commit b55456aaa0
1 changed files with 43 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
llvm/test/CodeGen/AArch64/fp16_intrinsic_scalar_3op.ll
View File

@ -1,6 +1,4 @@
; RUN: llc < %s -mtriple=aarch64-eabi -mattr=+v8.2a,+fullfp16 | FileCheck %s
declare half @llvm.fma.f16(half, half, half)
; RUN: llc < %s -mtriple=aarch64-eabi -mattr=+v8.2a,+neon,+fullfp16 | FileCheck %s
define dso_local half @t_vfmah_f16(half %a, half %b, half %c) {
; CHECK-LABEL: t_vfmah_f16:
@ -11,3 +9,45 @@ entry:
ret half %0
}
define half @fnma16(half %a, half %b, half %c) nounwind readnone ssp {
entry:
; CHECK-LABEL: fnma16:
; CHECK: fnmadd h0, h0, h1, h2
%0 = tail call half @llvm.fma.f16(half %a, half %b, half %c)
%mul = fmul half %0, -1.000000e+00
ret half %mul
}
define half @fms16(half %a, half %b, half %c) nounwind readnone ssp {
entry:
; CHECK-LABEL: fms16:
; CHECK: fmsub h0, h0, h1, h2
%mul = fmul half %b, -1.000000e+00
%0 = tail call half @llvm.fma.f16(half %a, half %mul, half %c)
ret half %0
}
define half @fms16_com(half %a, half %b, half %c) nounwind readnone ssp {
entry:
; CHECK-LABEL: fms16_com:
; FIXME: This should be a fmsub.
; CHECK: fneg h1, h1
; CHECK-NEXT: fmadd h0, h1, h0, h2
%mul = fmul half %b, -1.000000e+00
%0 = tail call half @llvm.fma.f16(half %mul, half %a, half %c)
ret half %0
}
define half @fnms16(half %a, half %b, half %c) nounwind readnone ssp {
entry:
; CHECK-LABEL: fnms16:
; CHECK: fnmsub h0, h0, h1, h2
%mul = fmul half %c, -1.000000e+00
%0 = tail call half @llvm.fma.f16(half %a, half %b, half %mul)
ret half %0
}
declare half @llvm.fma.f16(half, half, half)