PPC64: [turbofan] Changed TruncateFloat64ToInt64 to TryTruncateFloat64ToInt64.

src/ppc/constants-ppc.h

 // 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.
 
 #ifndef V8_PPC_CONSTANTS_PPC_H_
 #define V8_PPC_CONSTANTS_PPC_H_
 
 #include <stdint.h>
 
 #include "src/base/logging.h"
@@ skipping 261 matching lines @@
   FSEL = 23 << 1,   // Floating Select
   FMUL = 25 << 1,   // Floating Multiply
   FMSUB = 28 << 1,  // Floating Multiply-Subtract
   FMADD = 29 << 1,  // Floating Multiply-Add
 
   // Bits 10-1
   FCMPU = 0 << 1,      // Floating Compare Unordered
   FRSP = 12 << 1,      // Floating-Point Rounding
   FCTIW = 14 << 1,     // Floating Convert to Integer Word X-form
   FCTIWZ = 15 << 1,    // Floating Convert to Integer Word with Round to Zero
+  MTFSB1 = 38 << 1,    // Move to FPSCR Bit 1
   FNEG = 40 << 1,      // Floating Negate
   MCRFS = 64 << 1,     // Move to Condition Register from FPSCR
+  MTFSB0 = 70 << 1,    // Move to FPSCR Bit 0
   FMR = 72 << 1,       // Floating Move Register
   MTFSFI = 134 << 1,   // Move to FPSCR Field Immediate
   FABS = 264 << 1,     // Floating Absolute Value
   FRIN = 392 << 1,     // Floating Round to Integer Nearest
   FRIZ = 424 << 1,     // Floating Round to Integer Toward Zero
   FRIP = 456 << 1,     // Floating Round to Integer Plus
   FRIM = 488 << 1,     // Floating Round to Integer Minus
   MFFS = 583 << 1,     // move from FPSCR x-form
   MTFSF = 711 << 1,    // move to FPSCR fields XFL-form
   FCTID = 814 << 1,    // Floating convert to integer doubleword
@@ skipping 101 matching lines @@
 #undef CR_LT
 #undef CR_GT
 #undef CR_EQ
 #undef CR_SO
 #endif
 
 enum CRBit { CR_LT = 0, CR_GT = 1, CR_EQ = 2, CR_SO = 3, CR_FU = 3 };
 
 #define CRWIDTH 4
 
+// These are the documented bit positions biased down by 32
+enum FPSCRBit {
+  VXSOFT = 21,  // 53: Software-Defined Condition
+  VXSQRT = 22,  // 54: Invalid Square Root
+  VXCVI = 23    // 55: Invalid Integer Convert
+};
+
 // -----------------------------------------------------------------------------
 // Supervisor Call (svc) specific support.
 
 // Special Software Interrupt codes when used in the presence of the PPC
 // simulator.
 // svc (formerly swi) provides a 24bit immediate value. Use bits 22:0 for
 // standard SoftwareInterrupCode. Bit 23 is reserved for the stop feature.
 enum SoftwareInterruptCodes {
   // transition to C code
   kCallRtRedirected = 0x10,
@@ skipping 166 matching lines @@
   // Lookup the register number for the name provided.
   static int Number(const char* name);
 
  private:
   static const char* names_[kNumDoubleRegisters];
 };
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PPC_CONSTANTS_PPC_H_