Reviewers: danno, Jakob, Paul Lind, kisg, palfia, kilvadyb,
Description:
MIPS: Add flag for testing long branch mode.
TEST=
BUG=
Please review this at https://codereview.chromium.org/173773003/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files (+5, -2 lines):
M src/flag-definitions.h
M src/mips/assembler-mips.cc
Index: src/flag-definitions.h
diff --git a/src/flag-definitions.h b/src/flag-definitions.h
index
476e5348af3dd96ea158c27559c29171d660903d..13de6b56eedd5b171d2e8ba2768a3ac6998b9e2e
100644
--- a/src/flag-definitions.h
+++ b/src/flag-definitions.h
@@ -398,6 +398,8 @@ 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)")
// bootstrapper.cc
DEFINE_string(expose_natives_as, NULL, "expose natives in global object")
Index: src/mips/assembler-mips.cc
diff --git a/src/mips/assembler-mips.cc b/src/mips/assembler-mips.cc
index
f551dd5e104129e910996606ce45cc0c47573146..9adb9001fa400df8397a29eac072279f25a6db69
100644
--- a/src/mips/assembler-mips.cc
+++ b/src/mips/assembler-mips.cc
@@ -313,11 +313,12 @@ Assembler::Assembler(Isolate* isolate, void* buffer,
int buffer_size)
trampoline_pool_blocked_nesting_ = 0;
// We leave space (16 * kTrampolineSlotsSize)
// for BlockTrampolinePoolScope buffer.
- next_buffer_check_ = kMaxBranchOffset - kTrampolineSlotsSize * 16;
+ next_buffer_check_ = FLAG_force_long_branches
+ ? kMaxInt : kMaxBranchOffset - kTrampolineSlotsSize * 16;
internal_trampoline_exception_ = false;
last_bound_pos_ = 0;
- trampoline_emitted_ = false;
+ trampoline_emitted_ = FLAG_force_long_branches;
unbound_labels_count_ = 0;
block_buffer_growth_ = false;
--
--
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