PPC: Fix "[turbofan] Add support for reinterpreting integers as floating point and vice versa."

src/ppc/macro-assembler-ppc.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 <assert.h>  // For assert
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #if V8_TARGET_ARCH_PPC
 
 #include "src/base/bits.h"
@@ skipping 3731 matching lines @@
 #if V8_TARGET_ARCH_PPC64
   ld(dst, MemOperand(sp, 0));
 #else
   lwz(dst_hi, MemOperand(sp, Register::kExponentOffset));
   lwz(dst, MemOperand(sp, Register::kMantissaOffset));
 #endif
   addi(sp, sp, Operand(kDoubleSize));
 }
 
 
+void MacroAssembler::MovIntToFloat(DoubleRegister dst, Register src) {
+  subi(sp, sp, Operand(kFloatSize));
+  stw(src, MemOperand(sp, 0));
+  nop(GROUP_ENDING_NOP);  // LHS/RAW optimization
+  lfs(dst, MemOperand(sp, 0));
+  addi(sp, sp, Operand(kFloatSize));
+}
+
+
+void MacroAssembler::MovFloatToInt(Register dst, DoubleRegister src) {
+  subi(sp, sp, Operand(kFloatSize));
+  frsp(src, src);
+  stfs(src, MemOperand(sp, 0));
+  nop(GROUP_ENDING_NOP);  // LHS/RAW optimization
+  lwz(dst, MemOperand(sp, 0));
+  addi(sp, sp, Operand(kFloatSize));
+}
+
+
 void MacroAssembler::Add(Register dst, Register src, intptr_t value,
                          Register scratch) {
   if (is_int16(value)) {
     addi(dst, src, Operand(value));
   } else {
     mov(scratch, Operand(value));
     add(dst, src, scratch);
   }
 }
 
@@ skipping 594 matching lines @@
   }
   if (mag.shift > 0) srawi(result, result, mag.shift);
   ExtractBit(r0, dividend, 31);
   add(result, result, r0);
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_PPC