AMDGPU: Allow fp32-denormals feature for r600 targets

This was accidentally removed in r335942.

Differential Revision: https://reviews.llvm.org/D49934

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@338569 91177308-0d34-0410-b5e6-96231b3b80d8

Author: jvesely

lib/Target/AMDGPU/AMDGPU.td

@@ -267,15 +267,6 @@ def FeatureD16PreservesUnusedBits : SubtargetFeature<
 // Subtarget Features (options and debugging)
 //===------------------------------------------------------------===//
 
-// Some instructions do not support denormals despite this flag. Using
-// fp32 denormals also causes instructions to run at the double
-// precision rate for the device.
-def FeatureFP32Denormals : SubtargetFeature<"fp32-denormals",
-  "FP32Denormals",
-  "true",
-  "Enable single precision denormal handling"
->;
-
 // Denormal handling for fp64 and fp16 is controlled by the same
 // config register when fp16 supported.
 // TODO: Do we need a separate f16 setting when not legal?

lib/Target/AMDGPU/AMDGPUFeatures.td

@@ -19,6 +19,15 @@ def FeatureFMA : SubtargetFeature<"fmaf",
   "Enable single precision FMA (not as fast as mul+add, but fused)"
 >;
 
+// Some instructions do not support denormals despite this flag. Using
+// fp32 denormals also causes instructions to run at the double
+// precision rate for the device.
+def FeatureFP32Denormals : SubtargetFeature<"fp32-denormals",
+  "FP32Denormals",
+  "true",
+  "Enable single precision denormal handling"
+>;
+
 class SubtargetFeatureLocalMemorySize <int Value> : SubtargetFeature<
   "localmemorysize"#Value,
   "LocalMemorySize",