Revert of MIPS: Add FPXX support to MIPS32R2

src/mips/constants-mips.h

Index: src/mips/constants-mips.h
diff --git a/src/mips/constants-mips.h b/src/mips/constants-mips.h
index c453aa120022d882ec6a42edf0d5557bb869a8c2..e7cb67b884ef33f7570105745683fad34fa5bd1d 100644
--- a/src/mips/constants-mips.h
+++ b/src/mips/constants-mips.h
@@ -64,13 +64,9 @@
 #elif defined(FPU_MODE_FP64)
   static const FpuMode kFpuMode = kFP64;
 #elif defined(FPU_MODE_FPXX)
-#if defined(_MIPS_ARCH_MIPS32R2) || defined(_MIPS_ARCH_MIPS32R6)
-static const FpuMode kFpuMode = kFPXX;
+  static const FpuMode kFpuMode = kFPXX;
 #else
-#error "FPXX is supported only on Mips32R2 and Mips32R6"
-#endif
-#else
-static const FpuMode kFpuMode = kFP32;
+  static const FpuMode kFpuMode = kFP32;
 #endif
 
 #if(defined(__mips_hard_float) && __mips_hard_float != 0)
@@ -96,9 +92,13 @@
 #error Unknown endianness
 #endif
 
-#define IsFp64Mode() (kFpuMode == kFP64)
-#define IsFp32Mode() (kFpuMode == kFP32)
-#define IsFpxxMode() (kFpuMode == kFPXX)
+#ifndef FPU_MODE_FPXX
+#define IsFp64Mode() \
+  (kFpuMode == kFP64)
+#else
+#define IsFp64Mode() \
+  (CpuFeatures::IsSupported(FP64FPU))
+#endif
 
 #ifndef _MIPS_ARCH_MIPS32RX
 #define IsMipsArchVariant(check) \