Contribution of PowerPC port.

src/flag-definitions.h

 // Copyright 2012 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.
 
 // This file defines all of the flags.  It is separated into different section,
 // for Debug, Release, Logging and Profiling, etc.  To add a new flag, find the
 // correct section, and use one of the DEFINE_ macros, without a trailing ';'.
 //
 // This include does not have a guard, because it is a template-style include,
 // which can be included multiple times in different modes.  It expects to have
@@ skipping 366 matching lines @@
 DEFINE_BOOL(enable_movw_movt, false,
             "enable loading 32-bit constant by means of movw/movt "
             "instruction pairs (ARM only)")
 DEFINE_BOOL(enable_unaligned_accesses, true,
             "enable unaligned accesses for ARMv7 (ARM only)")
 DEFINE_BOOL(enable_32dregs, ENABLE_32DREGS_DEFAULT,
             "enable use of d16-d31 registers on ARM - this requires VFP3")
 DEFINE_BOOL(enable_vldr_imm, false,
             "enable use of constant pools for double immediate (ARM only)")
 DEFINE_BOOL(force_long_branches, false,
-            "force all emitted branches to be in long mode (MIPS only)")
+            "force all emitted branches to be in long mode (MIPS/PPC only)")
 
 // cpu-arm64.cc
 DEFINE_BOOL(enable_always_align_csp, true,
             "enable alignment of csp to 16 bytes on platforms which prefer "
             "the register to always be aligned (ARM64 only)")
 
 // bootstrapper.cc
 DEFINE_STRING(expose_natives_as, NULL, "expose natives in global object")
 DEFINE_STRING(expose_debug_as, NULL, "expose debug in global object")
 DEFINE_BOOL(expose_free_buffer, false, "expose freeBuffer extension")
@@ skipping 179 matching lines @@
 // parser.cc
 DEFINE_BOOL(allow_natives_syntax, false, "allow natives syntax")
 DEFINE_BOOL(trace_parse, false, "trace parsing and preparsing")
 
 // simulator-arm.cc, simulator-arm64.cc and simulator-mips.cc
 DEFINE_BOOL(trace_sim, false, "Trace simulator execution")
 DEFINE_BOOL(debug_sim, false, "Enable debugging the simulator")
 DEFINE_BOOL(check_icache, false,
             "Check icache flushes in ARM and MIPS simulator")
 DEFINE_INT(stop_sim_at, 0, "Simulator stop after x number of instructions")
-#if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_MIPS64)
+#if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_MIPS64) || \
+    defined(V8_TARGET_ARCH_PPC64)
 DEFINE_INT(sim_stack_alignment, 16,
            "Stack alignment in bytes in simulator. This must be a power of two "
            "and it must be at least 16. 16 is default.")
 #else
 DEFINE_INT(sim_stack_alignment, 8,
            "Stack alingment in bytes in simulator (4 or 8, 8 is default)")
 #endif
 DEFINE_INT(sim_stack_size, 2 * MB / KB,
            "Stack size of the ARM64 and MIPS64 simulator "
            "in kBytes (default is 2 MB)")
@@ skipping 328 matching lines @@
 #undef DEFINE_ALIAS_FLOAT
 #undef DEFINE_ALIAS_ARGS
 
 #undef FLAG_MODE_DECLARE
 #undef FLAG_MODE_DEFINE
 #undef FLAG_MODE_DEFINE_DEFAULTS
 #undef FLAG_MODE_META
 #undef FLAG_MODE_DEFINE_IMPLICATIONS
 
 #undef COMMA