http://codereview.chromium.org/651029/diff/3020/4056
File src/arm/assembler-thumb2-inl.h (right):

http://codereview.chromium.org/651029/diff/3020/4056#newcode212
src/arm/assembler-thumb2-inl.h:212: if (pc_offset() & 2 != 0) {
This doesn't do what you think it does (precedence of & and !=).

http://codereview.chromium.org/651029/diff/3020/4056#newcode214
src/arm/assembler-thumb2-inl.h:214: // Pad with a T1 NOP
Comments should end with full stops throughout.  Please use 'thumb'
instead of the abbreviation 'T1' for clarity.

http://codereview.chromium.org/651029/diff/3020/4056#newcode227
src/arm/assembler-thumb2-inl.h:227: ASSERT((pc_offset() & 1) == 0);
Please add a comment explaining where the '3' comes from.

http://codereview.chromium.org/651029/diff/3020/4058
File src/arm/assembler-thumb2.cc (right):

http://codereview.chromium.org/651029/diff/3020/4058#newcode612
src/arm/assembler-thumb2.cc:612:
Two blank lines between functions.

http://codereview.chromium.org/651029/diff/3020/4058#newcode624
src/arm/assembler-thumb2.cc:624: // the label points to an arm
instruction
Punctuation (ARM is all caps).

http://codereview.chromium.org/651029/diff/3020/4058#newcode641
src/arm/assembler-thumb2.cc:641: i0 = b11110 * B11 | b1000 * B5;
Instead of bxxxx we should have meaningful names here.

http://codereview.chromium.org/651029/diff/3020/4058#newcode651
src/arm/assembler-thumb2.cc:651: ASSERT(false);
UNREACHABLE() or UNIMPLEMENTED().  Also below.

http://codereview.chromium.org/651029/diff/3020/4058#newcode717
src/arm/assembler-thumb2.cc:717:
Spurious edit.

http://codereview.chromium.org/651029/diff/3020/4058#newcode1159
src/arm/assembler-thumb2.cc:1159: instr_arm_at(pc_ - 2 * kInstrArmSize)
==
The line above looks indented too much.

http://codereview.chromium.org/651029/diff/3020/4058#newcode1885
src/arm/assembler-thumb2.cc:1885: emit_int32(0x03000000 | num_prinfo_);
Do you ensure that you are 4 byte aligned before doing this?

http://codereview.chromium.org/651029/diff/3020/4052
File src/arm/assembler-thumb2.h (right):

http://codereview.chromium.org/651029/diff/3020/4052#newcode642
src/arm/assembler-thumb2.h:642: // hack to keep the code patcher happy
for now
Comments should start with a capital letter.

http://codereview.chromium.org/651029/diff/3020/4052#newcode1141
src/arm/assembler-thumb2.h:1141: static const int kMaxNumPRInfo =
kMaxDistBetweenPools/kInstrArmSize;
Not your fault, but this / should be surrounded by spaces.

http://codereview.chromium.org/651029/diff/3020/4052#newcode1176
src/arm/assembler-thumb2.h:1176: Register rm, ShiftOp shiftOp, int
shiftBy);
Funky indentation.

http://codereview.chromium.org/651029/diff/3020/4057
File src/arm/instr-thumb2.h (right):

http://codereview.chromium.org/651029/diff/3020/4057#newcode229
src/arm/instr-thumb2.h:229: int imm_;
The instruction needs to be a very lightweight object.  This thing has
15 fields, most of which will be unused in most instructions.  Just
initializing this object is likely to cost you.

I suggest that you leave instr0_ and instr1_ and make all the rest
inlined accessor functions.

http://codereview.chromium.org/651029

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