[builtins] Introduce proper Float64Log1p operator.

src/compiler/mips/code-generator-mips.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator.h"
 #include "src/compiler/code-generator-impl.h"
 #include "src/compiler/gap-resolver.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/osr.h"
@@ skipping 467 matching lines @@
     __ sync();                                           \
   } while (0)
 
 #define ASSEMBLE_ATOMIC_STORE_INTEGER(asm_instr)         \
   do {                                                   \
     __ sync();                                           \
     __ asm_instr(i.InputRegister(2), i.MemoryOperand()); \
     __ sync();                                           \
   } while (0)
 
+#define ASSEMBLE_IEEE754_UNOP(name)                                           \
+  do {                                                                        \
+    FrameScope scope(masm(), StackFrame::MANUAL);                             \
+    __ PrepareCallCFunction(0, 1, kScratchReg);                               \
+    __ MovToFloatParameter(i.InputDoubleRegister(0));                         \
+    __ CallCFunction(ExternalReference::ieee754_##name##_function(isolate()), \
+                     0, 1);                                                   \
+    /* Move the result in the double result register. */                      \
+    __ MovFromFloatResult(i.OutputDoubleRegister());                          \
+  } while (0)
+
 void CodeGenerator::AssembleDeconstructFrame() {
   __ mov(sp, fp);
   __ Pop(ra, fp);
 }
 
 void CodeGenerator::AssembleDeconstructActivationRecord(int stack_param_delta) {
   int sp_slot_delta = TailCallFrameStackSlotDelta(stack_param_delta);
   if (sp_slot_delta > 0) {
     __ addiu(sp, sp, sp_slot_delta * kPointerSize);
   }
@@ skipping 213 matching lines @@
       __ bind(ool->exit());
       break;
     }
     case kArchStackSlot: {
       FrameOffset offset =
           frame_access_state()->GetFrameOffset(i.InputInt32(0));
       __ Addu(i.OutputRegister(), offset.from_stack_pointer() ? sp : fp,
               Operand(offset.offset()));
       break;
     }
-    case kIeee754Float64Log: {
-      // TODO(bmeurer): We should really get rid of this special instruction,
-      // and generate a CallAddress instruction instead.
-      FrameScope scope(masm(), StackFrame::MANUAL);
-      __ PrepareCallCFunction(0, 1, kScratchReg);
-      __ MovToFloatParameter(i.InputDoubleRegister(0));
-      __ CallCFunction(ExternalReference::ieee754_log_function(isolate()), 0,
-                       1);
-      // Move the result in the double result register.
-      __ MovFromFloatResult(i.OutputDoubleRegister());
+    case kIeee754Float64Log:
+      ASSEMBLE_IEEE754_UNOP(log);
       break;
-    }
+    case kIeee754Float64Log1p:
+      ASSEMBLE_IEEE754_UNOP(log1p);
+      break;
     case kMipsAdd:
       __ Addu(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsAddOvf:
       // Pseudo-instruction used for overflow/branch. No opcode emitted here.
       break;
     case kMipsSub:
       __ Subu(i.OutputRegister(), i.InputRegister(0), i.InputOperand(1));
       break;
     case kMipsSubOvf:
@@ skipping 1266 matching lines @@
       padding_size -= v8::internal::Assembler::kInstrSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8