Remove neonfp attribute and instead set default based on CPU string. Add -arm-use-neon-fp to override the default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83218 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARM.td b/lib/Target/ARM/ARM.td
index 8069e2b..8851fbb 100644
--- a/lib/Target/ARM/ARM.td
+++ b/lib/Target/ARM/ARM.td
@@ -40,9 +40,6 @@
"Enable NEON instructions">;
def FeatureThumb2 : SubtargetFeature<"thumb2", "ThumbMode", "Thumb2",
"Enable Thumb2 instructions">;
-def FeatureNEONFP : SubtargetFeature<"neonfp", "UseNEONForSinglePrecisionFP",
- "true",
- "Use NEON for single-precision FP">;
//===----------------------------------------------------------------------===//
// ARM Processors supported.
@@ -105,7 +102,7 @@
// V7 Processors.
def : Processor<"cortex-a8", CortexA8Itineraries,
- [ArchV7A, FeatureThumb2, FeatureNEON, FeatureNEONFP]>;
+ [ArchV7A, FeatureThumb2, FeatureNEON]>;
def : ProcNoItin<"cortex-a9", [ArchV7A, FeatureThumb2, FeatureNEON]>;
//===----------------------------------------------------------------------===//
diff --git a/lib/Target/ARM/ARMSubtarget.cpp b/lib/Target/ARM/ARMSubtarget.cpp
index 704cf7a..cf1ee3f 100644
--- a/lib/Target/ARM/ARMSubtarget.cpp
+++ b/lib/Target/ARM/ARMSubtarget.cpp
@@ -21,12 +21,16 @@
static cl::opt<bool>
ReserveR9("arm-reserve-r9", cl::Hidden,
cl::desc("Reserve R9, making it unavailable as GPR"));
+static cl::opt<bool>
+UseNEONFP("arm-use-neon-fp",
+ cl::desc("Use NEON for single-precision FP"),
+ cl::init(false), cl::Hidden);
ARMSubtarget::ARMSubtarget(const std::string &TT, const std::string &FS,
bool isThumb)
: ARMArchVersion(V4T)
, ARMFPUType(None)
- , UseNEONForSinglePrecisionFP(false)
+ , UseNEONForSinglePrecisionFP(UseNEONFP)
, IsThumb(isThumb)
, ThumbMode(Thumb1)
, PostRAScheduler(false)
@@ -97,6 +101,8 @@
// Set CPU specific features.
if (CPUString == "cortex-a8") {
PostRAScheduler = true;
+ if (UseNEONFP.getPosition() == 0)
+ UseNEONForSinglePrecisionFP = true;
}
}