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| author | Jim Grosbach <grosbach@apple.com> | 2010-03-25 23:32:19 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2010-03-25 23:32:19 +0000 |
| commit | bd17bc96bf54cc58d91c2d20964c6c5e28bffa57 (patch) | |
| tree | cab0b92000926f0dba8e5f471c7294d2009db045 /lib/Target/ARM/ARM.td | |
| parent | 44424646ac9db5c4d3919462bd0831ec22783085 (diff) | |
| download | external_llvm-bd17bc96bf54cc58d91c2d20964c6c5e28bffa57.zip external_llvm-bd17bc96bf54cc58d91c2d20964c6c5e28bffa57.tar.gz external_llvm-bd17bc96bf54cc58d91c2d20964c6c5e28bffa57.tar.bz2 | |
switch the flag for using NEON for SP floating point to a subtarget 'feature'
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99568 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARM.td')
| -rw-r--r-- | lib/Target/ARM/ARM.td | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/Target/ARM/ARM.td b/lib/Target/ARM/ARM.td index 50d54b4..931c81c 100644 --- a/lib/Target/ARM/ARM.td +++ b/lib/Target/ARM/ARM.td @@ -49,8 +49,14 @@ def FeatureFP16 : SubtargetFeature<"fp16", "HasFP16", "true", // FIXME: Currently, this is only flagged for Cortex-A8. It may be true for // others as well. We should do more benchmarking and confirm one way or // the other. -def HasSlowVMLx : SubtargetFeature<"vmlx", "SlowVMLx", "true", - "Disable VFP MAC instructions">; +def FeatureHasSlowVMLx : SubtargetFeature<"vmlx", "SlowVMLx", "true", + "Disable VFP MAC instructions">; +// Some processors benefit from using NEON instructions for scalar +// single-precision FP operations. +def FeatureNEONForFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP", + "true", + "Use NEON for single precision FP">; + //===----------------------------------------------------------------------===// // ARM Processors supported. @@ -115,7 +121,8 @@ def : Processor<"arm1156t2f-s", ARMV6Itineraries, // V7 Processors. def : Processor<"cortex-a8", CortexA8Itineraries, - [ArchV7A, FeatureThumb2, FeatureNEON, HasSlowVMLx]>; + [ArchV7A, FeatureThumb2, FeatureNEON, FeatureHasSlowVMLx, + FeatureNEONForFP]>; def : ProcNoItin<"cortex-a9", [ArchV7A, FeatureThumb2, FeatureNEON]>; //===----------------------------------------------------------------------===// |