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Match common pattern for FNMAC. Add NEON SP support.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78085 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Goodwin 2009-08-04 18:44:29 +00:00
parent 831b500ec1
commit b84f3d427c
3 changed files with 6 additions and 1 deletions
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1
lib/Target/ARM/ARMInstrNEON.td
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@ -953,6 +953,7 @@ defm VQDMLSL : N3VLInt3_HS<0, 1, 0b1011, 0, "vqdmlsl.s", int_arm_neon_vqdmlsl>;
// Vector Multiply-Accumulate/Subtract used for single-precision FP
def : N3VDMulOps<fmul, fadd, VMLAfd>;
def : N3VDMulOps<fmul, fsub, VMLSfd>;
// Vector Subtract Operations.

5
lib/Target/ARM/ARMInstrVFP.td
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@ -346,6 +346,11 @@ def FNMACS : ASbIn<0b11100000, (outs SPR:$dst), (ins SPR:$dstin, SPR:$a, SPR:$b)
let Inst{6} = 1;
}
def : Pat<(fsub DPR:$dstin, (fmul DPR:$a, DPR:$b)),
(FNMACD DPR:$dstin, DPR:$a, DPR:$b)>, Requires<[DontUseNEONForFP]>;
def : Pat<(fsub SPR:$dstin, (fmul SPR:$a, SPR:$b)),
(FNMACS SPR:$dstin, SPR:$a, SPR:$b)>, Requires<[DontUseNEONForFP]>;
def FNMSCD : ADbI<0b11100001, (outs DPR:$dst), (ins DPR:$dstin, DPR:$a, DPR:$b),
"fnmscd", " $dst, $a, $b",
[(set DPR:$dst, (fsub (fneg (fmul DPR:$a, DPR:$b)), DPR:$dstin))]>,

1
test/CodeGen/ARM/fnmacs.ll
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@ -1,4 +1,3 @@
; XFAIL: *
; RUN: llvm-as < %s | llc -march=arm -mattr=+vfp2 | grep -E {fnmacs\\W*s\[0-9\]+,\\W*s\[0-9\]+,\\W*s\[0-9\]+} | count 1
; RUN: llvm-as < %s | llc -march=arm -mattr=+neon,+neonfp | grep -E {vmls.f32\\W*d\[0-9\]+,\\W*d\[0-9\]+,\\W*d\[0-9\]+} | count 1
; RUN: llvm-as < %s | llc -march=arm -mattr=+neon,-neonfp | grep -E {fnmacs\\W*s\[0-9\]+,\\W*s\[0-9\]+,\\W*s\[0-9\]+} | count 1