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By default, for cortex-a8 use NEON for single-precision FP. 

llvm-svn: 78200
This commit is contained in:
David Goodwin 2009-08-05 16:01:19 +00:00
parent b6fec38426
commit a307edbdd5
2 changed files with 7 additions and 5 deletions
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8
llvm/lib/Target/ARM/ARM.td
View File

@ -32,9 +32,6 @@ def ArchV6T2 : SubtargetFeature<"v6t2", "ARMArchVersion", "V6T2",
"ARM v6t2">; "ARM v6t2">;
def ArchV7A : SubtargetFeature<"v7a", "ARMArchVersion", "V7A", def ArchV7A : SubtargetFeature<"v7a", "ARMArchVersion", "V7A",
"ARM v7A">; "ARM v7A">;
def FeatureNEONFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP",
"true",
"Use NEON for single-precision FP">;
def FeatureVFP2 : SubtargetFeature<"vfp2", "ARMFPUType", "VFPv2", def FeatureVFP2 : SubtargetFeature<"vfp2", "ARMFPUType", "VFPv2",
"Enable VFP2 instructions">; "Enable VFP2 instructions">;
def FeatureVFP3 : SubtargetFeature<"vfp3", "ARMFPUType", "VFPv3", def FeatureVFP3 : SubtargetFeature<"vfp3", "ARMFPUType", "VFPv3",
@ -43,6 +40,9 @@ def FeatureNEON : SubtargetFeature<"neon", "ARMFPUType", "NEON",
"Enable NEON instructions">; "Enable NEON instructions">;
def FeatureThumb2 : SubtargetFeature<"thumb2", "ThumbMode", "Thumb2", def FeatureThumb2 : SubtargetFeature<"thumb2", "ThumbMode", "Thumb2",
"Enable Thumb2 instructions">; "Enable Thumb2 instructions">;
def FeatureNEONFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP",
"true",
"Use NEON for single-precision FP">;
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
// ARM Processors supported. // ARM Processors supported.
@ -113,7 +113,7 @@ def : Processor<"arm1156t2f-s", V6Itineraries,
// V7 Processors. // V7 Processors.
def : Processor<"cortex-a8", CortexA8Itineraries, def : Processor<"cortex-a8", CortexA8Itineraries,
[ArchV7A, FeatureThumb2, FeatureNEON]>; [ArchV7A, FeatureThumb2, FeatureNEON, FeatureNEONFP]>;
def : Processor<"cortex-a9", V7Itineraries, def : Processor<"cortex-a9", V7Itineraries,
[ArchV7A, FeatureThumb2, FeatureNEON]>; [ArchV7A, FeatureThumb2, FeatureNEON]>;

4
llvm/lib/Target/ARM/ARMSubtarget.h
View File

@ -42,7 +42,9 @@ protected:
/// ARMFPUType - Floating Point Unit type. /// ARMFPUType - Floating Point Unit type.
ARMFPEnum ARMFPUType; ARMFPEnum ARMFPUType;
/// UseNEONForSinglePrecisionFP - if NEON is available use for FP /// UseNEONForSinglePrecisionFP - if the NEONFP attribute has been
/// specified. Use the method useNEONForSinglePrecisionFP() to
/// determine if NEON should actually be used.
bool UseNEONForSinglePrecisionFP; bool UseNEONForSinglePrecisionFP;
/// IsThumb - True if we are in thumb mode, false if in ARM mode. /// IsThumb - True if we are in thumb mode, false if in ARM mode.