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[ARM] Select VFMA 

llvm-svn: 368264
This commit is contained in:
Sam Tebbs 2019-08-08 08:21:01 +00:00
parent 579d6d1aa5
commit 7ca980edcd
2 changed files with 31 additions and 0 deletions
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7
llvm/lib/Target/ARM/ARMInstrMVE.td
View File

@ -2646,6 +2646,13 @@ let Predicates = [HasMVEFloat, UseFusedMAC] in {
(v4f32 (MVE_VFMSf32 $src1, $src2, $src3))>;
}
let Predicates = [HasMVEFloat] in {
def : Pat<(v8f16 (fma (v8f16 MQPR:$src1), (v8f16 MQPR:$src2), (v8f16 MQPR:$src3))),
(v8f16 (MVE_VFMAf16 $src3, $src1, $src2))>;
def : Pat<(v4f32 (fma (v4f32 MQPR:$src1), (v4f32 MQPR:$src2), (v4f32 MQPR:$src3))),
(v4f32 (MVE_VFMAf32 $src3, $src1, $src2))>;
}
def MVE_VADDf32 : MVE_VADDSUBFMA_fp<"vadd", "f32", 0b0, 0b0, 0b1, 0b0>;
def MVE_VADDf16 : MVE_VADDSUBFMA_fp<"vadd", "f16", 0b1, 0b0, 0b1, 0b0>;

24
llvm/test/CodeGen/Thumb2/mve-vfma.ll Normal file
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@ -0,0 +1,24 @@
; RUN: llc -mtriple=thumbv8.1m.main-arm-none-eabi -mattr=+mve.fp %s -o - | FileCheck %s
define arm_aapcs_vfpcc <4 x float> @fma_v4f32(<4 x float> %dst, <4 x float> %s1, <4 x float> %s2) {
; CHECK-LABEL: fma_v4f32:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: vfma.f32 q0, q1, q2
; CHECK-NEXT: bx lr
entry:
%0 = tail call fast <4 x float> @llvm.fma.v4f32(<4 x float> %s1, <4 x float> %s2, <4 x float> %dst)
ret <4 x float> %0
}
define arm_aapcs_vfpcc <8 x half> @fma_v8f16(<8 x half> %dst, <8 x half> %s1, <8 x half> %s2) {
; CHECK-LABEL: fma_v8f16:
; CHECK: @ %bb.0: @ %entry
; CHECK-NEXT: vfma.f16 q0, q1, q2
; CHECK-NEXT: bx lr
entry:
%0 = tail call fast <8 x half> @llvm.fma.v8f16(<8 x half> %s1, <8 x half> %s2, <8 x half> %dst)
ret <8 x half> %0
}
declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>)
declare <8 x half> @llvm.fma.v8f16(<8 x half>, <8 x half>, <8 x half>)