ARM: Make use of d16-d31 when available.

src/arm/code-stubs-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2018 matching lines @@
 }
 
 
 void StoreBufferOverflowStub::Generate(MacroAssembler* masm) {
   // We don't allow a GC during a store buffer overflow so there is no need to
   // store the registers in any particular way, but we do have to store and
   // restore them.
   __ stm(db_w, sp, kCallerSaved | lr.bit());
   if (save_doubles_ == kSaveFPRegs) {
     CpuFeatures::Scope scope(VFP2);
-    __ sub(sp, sp, Operand(kDoubleSize * DwVfpRegister::kNumRegisters));
-    for (int i = 0; i < DwVfpRegister::kNumRegisters; i++) {
+    __ sub(sp, sp, Operand(kDoubleSize *
+                           DwVfpRegister::NumAvailableRegisters()));
+    for (int i = 0; i < DwVfpRegister::NumAvailableRegisters(); i++) {
       DwVfpRegister reg = DwVfpRegister::from_code(i);
       __ vstr(reg, MemOperand(sp, i * kDoubleSize));
     }
   }
   const int argument_count = 1;
   const int fp_argument_count = 0;
   const Register scratch = r1;
 
   AllowExternalCallThatCantCauseGC scope(masm);
   __ PrepareCallCFunction(argument_count, fp_argument_count, scratch);
   __ mov(r0, Operand(ExternalReference::isolate_address()));
   __ CallCFunction(
       ExternalReference::store_buffer_overflow_function(masm->isolate()),
       argument_count);
   if (save_doubles_ == kSaveFPRegs) {
     CpuFeatures::Scope scope(VFP2);
-    for (int i = 0; i < DwVfpRegister::kNumRegisters; i++) {
+    for (int i = 0; i < DwVfpRegister::NumAvailableRegisters(); i++) {
       DwVfpRegister reg = DwVfpRegister::from_code(i);
       __ vldr(reg, MemOperand(sp, i * kDoubleSize));
     }
-    __ add(sp, sp, Operand(kDoubleSize * DwVfpRegister::kNumRegisters));
+    __ add(sp, sp, Operand(kDoubleSize *
+                           DwVfpRegister::NumAvailableRegisters()));
   }
   __ ldm(ia_w, sp, kCallerSaved | pc.bit());  // Also pop pc to get Ret(0).
 }
 
 
 void UnaryOpStub::PrintName(StringStream* stream) {
   const char* op_name = Token::Name(op_);
   const char* overwrite_name = NULL;  // Make g++ happy.
   switch (mode_) {
     case UNARY_NO_OVERWRITE: overwrite_name = "Alloc"; break;
@@ skipping 1565 matching lines @@
       __ b(ne, &not_plus_half);
 
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13).
       __ vmov(double_scratch, -V8_INFINITY, scratch);
       __ VFPCompareAndSetFlags(double_base, double_scratch);
       __ vneg(double_result, double_scratch, eq);
       __ b(eq, &done);
 
       // Add +0 to convert -0 to +0.
-      __ vadd(double_scratch, double_base, kDoubleRegZero);
+      __ vadd(double_scratch, double_base, DwVfpRegister::ZeroReg());
       __ vsqrt(double_result, double_scratch);
       __ jmp(&done);
 
       __ bind(&not_plus_half);
       __ vmov(double_scratch, -0.5, scratch);
       __ VFPCompareAndSetFlags(double_exponent, double_scratch);
       __ b(ne, &call_runtime);
 
       // Calculates square root of base.  Check for the special case of
       // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13).
       __ vmov(double_scratch, -V8_INFINITY, scratch);
       __ VFPCompareAndSetFlags(double_base, double_scratch);
-      __ vmov(double_result, kDoubleRegZero, eq);
+      __ vmov(double_result, DwVfpRegister::ZeroReg(), eq);
       __ b(eq, &done);
 
       // Add +0 to convert -0 to +0.
-      __ vadd(double_scratch, double_base, kDoubleRegZero);
+      __ vadd(double_scratch, double_base, DwVfpRegister::ZeroReg());
       __ vmov(double_result, 1.0, scratch);
       __ vsqrt(double_scratch, double_scratch);
       __ vdiv(double_result, double_result, double_scratch);
       __ jmp(&done);
     }
 
     __ push(lr);
     {
       AllowExternalCallThatCantCauseGC scope(masm);
       __ PrepareCallCFunction(0, 2, scratch);
@@ skipping 340 matching lines @@
   Label invoke, handler_entry, exit;
 
   // Called from C, so do not pop argc and args on exit (preserve sp)
   // No need to save register-passed args
   // Save callee-saved registers (incl. cp and fp), sp, and lr
   __ stm(db_w, sp, kCalleeSaved | lr.bit());
 
   if (CpuFeatures::IsSupported(VFP2)) {
     CpuFeatures::Scope scope(VFP2);
     // Save callee-saved vfp registers.
-    __ vstm(db_w, sp, kFirstCalleeSavedDoubleReg, kLastCalleeSavedDoubleReg);
+    __ Vstm(db_w, sp, DwVfpRegister::FirstCalleeSavedReg(),
+            DwVfpRegister::LastCalleeSavedReg());
     // Set up the reserved register for 0.0.
-    __ vmov(kDoubleRegZero, 0.0);
+    __ vmov(DwVfpRegister::ZeroReg(), 0.0);
   }
 
   // Get address of argv, see stm above.
   // r0: code entry
   // r1: function
   // r2: receiver
   // r3: argc
 
   // Set up argv in r4.
   int offset_to_argv = (kNumCalleeSaved + 1) * kPointerSize;
   if (CpuFeatures::IsSupported(VFP2)) {
-    offset_to_argv += kNumDoubleCalleeSaved * kDoubleSize;
+    offset_to_argv += DwVfpRegister::NumCalleeSaved() * kDoubleSize;
   }
   __ ldr(r4, MemOperand(sp, offset_to_argv));
 
   // Push a frame with special values setup to mark it as an entry frame.
   // r0: code entry
   // r1: function
   // r2: receiver
   // r3: argc
   // r4: argv
   Isolate* isolate = masm->isolate();
@@ skipping 119 matching lines @@
   // Restore callee-saved registers and return.
 #ifdef DEBUG
   if (FLAG_debug_code) {
     __ mov(lr, Operand(pc));
   }
 #endif
 
   if (CpuFeatures::IsSupported(VFP2)) {
     CpuFeatures::Scope scope(VFP2);
     // Restore callee-saved vfp registers.
-    __ vldm(ia_w, sp, kFirstCalleeSavedDoubleReg, kLastCalleeSavedDoubleReg);
+    __ Vldm(ia_w, sp, DwVfpRegister::FirstCalleeSavedReg(),
+            DwVfpRegister::LastCalleeSavedReg());
   }
 
   __ ldm(ia_w, sp, kCalleeSaved | pc.bit());
 }
 
 
 // Uses registers r0 to r4.
 // Expected input (depending on whether args are in registers or on the stack):
 // * object: r0 or at sp + 1 * kPointerSize.
 // * function: r1 or at sp.
@@ skipping 3414 matching lines @@
 
   __ Pop(lr, r5, r1);
   __ Ret();
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM