[llvm-commits] [llvm] r98503 - in /llvm/trunk/lib/Target/ARM: ARM.td ARMISelLowering.cpp ARMSubtarget.cpp ARMSubtarget.h

[Anton Korobeynikov]

Author: asl
Date: Sun Mar 14 13:42:38 2010
New Revision: 98503

URL: http://llvm.org/viewvc/llvm-project?rev=98503&view=rev
Log:
Add substarget feature for FP16

Modified:
    llvm/trunk/lib/Target/ARM/ARM.td
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
    llvm/trunk/lib/Target/ARM/ARMSubtarget.cpp
    llvm/trunk/lib/Target/ARM/ARMSubtarget.h

Modified: llvm/trunk/lib/Target/ARM/ARM.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARM.td?rev=98503&r1=98502&r2=98503&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARM.td (original)
+++ llvm/trunk/lib/Target/ARM/ARM.td Sun Mar 14 13:42:38 2010
@@ -40,6 +40,8 @@
                                    "Enable NEON instructions">;
 def FeatureThumb2 : SubtargetFeature<"thumb2", "ThumbMode", "Thumb2",
                                      "Enable Thumb2 instructions">;
+def FeatureFP16   : SubtargetFeature<"fp16", "HasFP16", "true",
+                                     "Enable half-precision floating point">;
 
 //===----------------------------------------------------------------------===//
 // ARM Processors supported.

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=98503&r1=98502&r2=98503&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Sun Mar 14 13:42:38 2010
@@ -436,7 +436,7 @@
       setOperationAction(ISD::FP_TO_SINT, MVT::i32, Custom);
     }
     // Special handling for half-precision FP.
-    if (Subtarget->hasVFP3()) {
+    if (Subtarget->hasVFP3() && Subtarget->hasFP16()) {
       setOperationAction(ISD::FP16_TO_FP32, MVT::f32, Custom);
       setOperationAction(ISD::FP32_TO_FP16, MVT::i32, Custom);
     }

Modified: llvm/trunk/lib/Target/ARM/ARMSubtarget.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMSubtarget.cpp?rev=98503&r1=98502&r2=98503&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMSubtarget.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMSubtarget.cpp Sun Mar 14 13:42:38 2010
@@ -41,6 +41,7 @@
   , PostRAScheduler(false)
   , IsR9Reserved(ReserveR9)
   , UseMovt(UseMOVT)
+  , HasFP16(false)
   , stackAlignment(4)
   , CPUString("generic")
   , TargetType(isELF) // Default to ELF unless otherwise specified.

Modified: llvm/trunk/lib/Target/ARM/ARMSubtarget.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMSubtarget.h?rev=98503&r1=98502&r2=98503&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMSubtarget.h (original)
+++ llvm/trunk/lib/Target/ARM/ARMSubtarget.h Sun Mar 14 13:42:38 2010
@@ -66,6 +66,10 @@
   /// imms (including global addresses).
   bool UseMovt;
 
+  /// HasFP16 - True if subtarget supports half-precision FP (We support VFP+HF
+  /// only so far)
+  bool HasFP16;
+
   /// stackAlignment - The minimum alignment known to hold of the stack frame on
   /// entry to the function and which must be maintained by every function.
   unsigned stackAlignment;
@@ -116,6 +120,8 @@
   bool useNEONForSinglePrecisionFP() const {
     return hasNEON() && UseNEONForSinglePrecisionFP; }
 
+  bool hasFP16() const { return HasFP16; }
+
   bool isTargetDarwin() const { return TargetType == isDarwin; }
   bool isTargetELF() const { return TargetType == isELF; }