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| author | Stephen Hines <srhines@google.com> | 2012-03-05 14:40:54 -0800 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2012-03-05 14:40:54 -0800 |
| commit | c02a5c5e8d9c1fd2a20ad4aed40f328564e95b40 (patch) | |
| tree | 9a892d465bc8a229322b6c296c346250a95ecd6c /lib/Target/ARM/ARM.td | |
| parent | 2987cbcdaef9e14f635b6f9ac32c58ff26a2fc0f (diff) | |
| parent | c3384c93c0e4c50da4ad093f08997507f9281c75 (diff) | |
| download | external_llvm-c02a5c5e8d9c1fd2a20ad4aed40f328564e95b40.zip external_llvm-c02a5c5e8d9c1fd2a20ad4aed40f328564e95b40.tar.gz external_llvm-c02a5c5e8d9c1fd2a20ad4aed40f328564e95b40.tar.bz2 | |
Merge branch 'upstream' into merge-20120305
Conflicts:
lib/Support/Atomic.cpp
Change-Id: I563b3bc2a82942ccbae5bed42e53b9149a8bf3a0
Diffstat (limited to 'lib/Target/ARM/ARM.td')
| -rw-r--r-- | lib/Target/ARM/ARM.td | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/lib/Target/ARM/ARM.td b/lib/Target/ARM/ARM.td index 86aeeb2..b05fe62 100644 --- a/lib/Target/ARM/ARM.td +++ b/lib/Target/ARM/ARM.td @@ -1,4 +1,4 @@ -//===- ARM.td - Describe the ARM Target Machine ------------*- tablegen -*-===// +//===-- ARM.td - Describe the ARM Target Machine -----------*- tablegen -*-===// // // The LLVM Compiler Infrastructure // @@ -32,9 +32,15 @@ def FeatureVFP2 : SubtargetFeature<"vfp2", "HasVFPv2", "true", def FeatureVFP3 : SubtargetFeature<"vfp3", "HasVFPv3", "true", "Enable VFP3 instructions", [FeatureVFP2]>; +def FeatureVFP4 : SubtargetFeature<"vfp4", "HasVFPv4", "true", + "Enable VFP4 instructions", + [FeatureVFP3]>; def FeatureNEON : SubtargetFeature<"neon", "HasNEON", "true", "Enable NEON instructions", [FeatureVFP3]>; +def FeatureNEON2 : SubtargetFeature<"neon2", "HasNEON2", "true", + "Enable Advanced SIMD2 instructions", + [FeatureNEON]>; def FeatureThumb2 : SubtargetFeature<"thumb2", "HasThumb2", "true", "Enable Thumb2 instructions">; def FeatureNoARM : SubtargetFeature<"noarm", "NoARM", "true", @@ -70,6 +76,8 @@ def FeatureVMLxForwarding : SubtargetFeature<"vmlx-forwarding", def FeatureNEONForFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP", "true", "Use NEON for single precision FP">; +// Allow more precision in FP computation +def FPContractions : Predicate<"!TM.Options.NoExcessFPPrecision">; // Disable 32-bit to 16-bit narrowing for experimentation. def FeaturePref32BitThumb : SubtargetFeature<"32bit", "Pref32BitThumb", "true", @@ -83,6 +91,11 @@ def FeatureAvoidPartialCPSR : SubtargetFeature<"avoid-partial-cpsr", "AvoidCPSRPartialUpdate", "true", "Avoid CPSR partial update for OOO execution">; +// Some processors perform return stack prediction. CodeGen should avoid issue +// "normal" call instructions to callees which do not return. +def FeatureHasRAS : SubtargetFeature<"ras", "HasRAS", "true", + "Has return address stack">; + /// Some M architectures don't have the DSP extension (v7E-M vs. v7M) def FeatureDSPThumb2 : SubtargetFeature<"t2dsp", "Thumb2DSP", "true", "Supports v7 DSP instructions in Thumb2">; @@ -198,13 +211,14 @@ def : Processor<"arm1156t2f-s", ARMV6Itineraries, [HasV6T2Ops, FeatureVFP2, // V7a Processors. def : Processor<"cortex-a8", CortexA8Itineraries, [ProcA8, HasV7Ops, FeatureNEON, FeatureDB, - FeatureDSPThumb2]>; + FeatureDSPThumb2, FeatureHasRAS]>; def : Processor<"cortex-a9", CortexA9Itineraries, [ProcA9, HasV7Ops, FeatureNEON, FeatureDB, - FeatureDSPThumb2]>; + FeatureDSPThumb2, FeatureHasRAS]>; def : Processor<"cortex-a9-mp", CortexA9Itineraries, [ProcA9, HasV7Ops, FeatureNEON, FeatureDB, - FeatureDSPThumb2, FeatureMP]>; + FeatureDSPThumb2, FeatureMP, + FeatureHasRAS]>; // V7M Processors. def : ProcNoItin<"cortex-m3", [HasV7Ops, |