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| author | Evan Cheng <evan.cheng@apple.com> | 2012-04-11 05:33:07 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-04-11 05:33:07 +0000 |
| commit | bee78fe5fcd8464f58bc729dede1a87d763ac3ae (patch) | |
| tree | bb6d76af14157c7b101d40484e2759dd900d5878 /lib/Target/ARM/ARMInstrInfo.td | |
| parent | 7eb46d834ccca887ab8fbd1d96080f9a4632bb48 (diff) | |
| download | llvm-bee78fe5fcd8464f58bc729dede1a87d763ac3ae.tar.gz llvm-bee78fe5fcd8464f58bc729dede1a87d763ac3ae.tar.bz2 llvm-bee78fe5fcd8464f58bc729dede1a87d763ac3ae.tar.xz | |
Clean up ARM fused multiply + add/sub support some more: rename some isel
predicates.
Also remove NEON2 since it's not really useful and it is confusing. If
NEON + VFP4 implies NEON2 but NEON2 doesn't imply NEON + VFP4, what does it
really mean?
rdar://10139676
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154480 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMInstrInfo.td')
| -rw-r--r-- | lib/Target/ARM/ARMInstrInfo.td | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td index 37284f979d..3caaa23661 100644 --- a/lib/Target/ARM/ARMInstrInfo.td +++ b/lib/Target/ARM/ARMInstrInfo.td @@ -181,12 +181,8 @@ def HasVFP3 : Predicate<"Subtarget->hasVFP3()">, AssemblerPredicate<"FeatureVFP3">; def HasVFP4 : Predicate<"Subtarget->hasVFP4()">, AssemblerPredicate<"FeatureVFP4">; -def NoVFP4 : Predicate<"!Subtarget->hasVFP4()">; def HasNEON : Predicate<"Subtarget->hasNEON()">, AssemblerPredicate<"FeatureNEON">; -def HasNEON2 : Predicate<"Subtarget->hasNEON2()">, - AssemblerPredicate<"FeatureNEON,FeatureVFP4">; -def NoNEON2 : Predicate<"!Subtarget->hasNEON2()">; def HasFP16 : Predicate<"Subtarget->hasFP16()">, AssemblerPredicate<"FeatureFP16">; def HasDivide : Predicate<"Subtarget->hasDivide()">, @@ -221,8 +217,10 @@ def UseMovt : Predicate<"Subtarget->useMovt()">; def DontUseMovt : Predicate<"!Subtarget->useMovt()">; def UseFPVMLx : Predicate<"Subtarget->useFPVMLx()">; -// Allow more precision in FP computation -def FPContractions : Predicate<"!TM.Options.NoExcessFPPrecision">; +// Prefer fused MAC for fp mul + add over fp VMLA / VMLS if they are available. +// But only select them if more precision in FP computation is allowed. +def UseFusedMAC : Predicate<"!TM.Options.NoExcessFPPrecision">; +def DontUseFusedMAC : Predicate<"!Subtarget->hasVFP4()">; //===----------------------------------------------------------------------===// // ARM Flag Definitions. |