PPC: [builtins] Introduce proper Float64Log1p, Float64Atan and Float64Atan2 operators.

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

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index 10da77bb9914eb23ca876645466fb6649c320401..a994b53947cc84d85d0d92f570004b3f1df52043 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -436,15 +436,33 @@ Condition FlagsConditionToCondition(FlagsCondition condition, ArchOpcode op) {
     DCHECK_EQ(LeaveRC, i.OutputRCBit());                                      \
   } while (0)
 
-#define ASSEMBLE_FLOAT_LOG()                                                \
-  do {                                                                      \
-    FrameScope scope(masm(), StackFrame::MANUAL);                           \
-    __ PrepareCallCFunction(0, 1, kScratchReg);                             \
-    __ MovToFloatParameter(i.InputDoubleRegister(0));                       \
-    __ CallCFunction(ExternalReference::ieee754_log_function(isolate()), 0, \
-                     1);                                                    \
-    __ MovFromFloatResult(i.OutputDoubleRegister());                        \
-    DCHECK_EQ(LeaveRC, i.OutputRCBit());                                    \
+#define ASSEMBLE_IEEE754_UNOP(name)                                            \
+  do {                                                                         \
+    /* 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_##name##_function(isolate()),  \
+                     0, 1);                                                    \
+    /* Move the result in the double result register. */                       \
+    __ MovFromFloatResult(i.OutputDoubleRegister());                           \
+    DCHECK_EQ(LeaveRC, i.OutputRCBit());                                       \
+  } while (0)
+
+#define ASSEMBLE_IEEE754_BINOP(name)                                           \
+  do {                                                                         \
+    /* TODO(bmeurer): We should really get rid of this special instruction, */ \
+    /* and generate a CallAddress instruction instead. */                      \
+    FrameScope scope(masm(), StackFrame::MANUAL);                              \
+    __ PrepareCallCFunction(0, 2, kScratchReg);                                \
+    __ MovToFloatParameters(i.InputDoubleRegister(0),                          \
+                           i.InputDoubleRegister(1));                          \
+    __ CallCFunction(ExternalReference::ieee754_##name##_function(isolate()),  \
+                     0, 2);                                                    \
+    /* Move the result in the double result register. */                       \
+    __ MovFromFloatResult(i.OutputDoubleRegister());                           \
+    DCHECK_EQ(LeaveRC, i.OutputRCBit());                                       \
   } while (0)
 
 #define ASSEMBLE_FLOAT_MAX(scratch_reg)                                       \
@@ -1239,10 +1257,17 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
       // and generate a CallAddress instruction instead.
       ASSEMBLE_FLOAT_MODULO();
       break;
-    case kPPC_LogDouble:
-      // TODO(bmeurer): We should really get rid of this special instruction,
-      // and generate a CallAddress instruction instead.
-      ASSEMBLE_FLOAT_LOG();
+    case kIeee754Float64Atan:
+      ASSEMBLE_IEEE754_UNOP(atan);
+      break;
+    case kIeee754Float64Atan2:
+      ASSEMBLE_IEEE754_BINOP(atan2);
+      break;
+    case kIeee754Float64Log:
+      ASSEMBLE_IEEE754_UNOP(log);
+      break;
+    case kIeee754Float64Log1p:
+      ASSEMBLE_IEEE754_UNOP(log1p);
       break;
     case kPPC_Neg:
       __ neg(i.OutputRegister(), i.InputRegister(0), LeaveOE, i.OutputRCBit());