Air should have a disassembly mode that dumps IR and assembly intermixed

Air should have a disassembly mode that dumps IR and assembly intermixed
https://bugs.webkit.org/show_bug.cgi?id=168629

Reviewed by Filip Pizlo.

This will make dumping FTL disassembly dump Air intermixed
with the assembly generated by each Air Inst. This is similar
to how dumpDFGDisassembly dumps the generated assembly for each
Node.

Here is what the output will look like:

Generated FTL JIT code for foo#CUaFiQ:[0x10b76c960->0x10b76c2d0->0x10b7b6da0, FTLFunctionCall, 40 (NeverInline)], instruction count = 40:
BB#0: ; frequency = 1.000000
        0x469004e02e00: push %rbp
        0x469004e02e01: mov %rsp, %rbp
        0x469004e02e04: add $0xffffffffffffffd0, %rsp
    Move $0x10b76c960, %rax, $4487301472(@16)
        0x469004e02e08: mov $0x10b76c960, %rax
    Move %rax, 16(%rbp), @19
        0x469004e02e12: mov %rax, 0x10(%rbp)
    Patch &Patchpoint2, %rbp, %rax, @20
        0x469004e02e16: lea -0x50(%rbp), %rax
        0x469004e02e1a: mov $0x1084081e0, %r11
        0x469004e02e24: cmp %rax, (%r11)
        0x469004e02e27: ja 0x469004e02e9a
    Move 56(%rbp), %rdx, @23
        0x469004e02e2d: mov 0x38(%rbp), %rdx
    Move $0xffff000000000002, %rax, $-281474976710654(@15)
        0x469004e02e31: mov $0xffff000000000002, %rax
    Patch &BranchTest64(3,SameAsRep)1, NonZero, %rdx, %rax, %rdx, @26
        0x469004e02e3b: test %rdx, %rax
        0x469004e02e3e: jnz 0x469004e02f08
    Move 48(%rbp), %rax, @29
        0x469004e02e44: mov 0x30(%rbp), %rax
    Move %rax, %rcx, @31
        0x469004e02e48: mov %rax, %rcx
    Xor64 $6, %rcx, @31
        0x469004e02e4b: xor $0x6, %rcx
    Patch &BranchTest64(3,SameAsRep)1, NonZero, %rcx, $-2, %rax, @35
        0x469004e02e4f: test $0xfffffffffffffffe, %rcx
        0x469004e02e56: jnz 0x469004e02f12
    Patch &Branch32(3,SameAsRep)0, NotEqual, (%rdx), $266, %rdx, @45
        0x469004e02e5c: cmp $0x10a, (%rdx)
        0x469004e02e62: jnz 0x469004e02f1c
    BranchTest32 NonZero, %rax, $1, @49
        0x469004e02e68: test $0x1, %al
        0x469004e02e6a: jnz 0x469004e02e91
  Successors: #3, #1
BB#1: ; frequency = 1.000000
  Predecessors: #0
    Move $0, %rcx, @65
        0x469004e02e70: xor %rcx, %rcx
    Jump @66
  Successors: #2
BB#2: ; frequency = 1.000000
  Predecessors: #1, #3
    Move 24(%rdx), %rax, @58
        0x469004e02e73: mov 0x18(%rdx), %rax
    Patch &BranchAdd32(4,ForceLateUseUnlessRecoverable)3, Overflow, %rcx, %rax, %rcx, %rcx, %rax, @60
        0x469004e02e77: add %eax, %ecx
        0x469004e02e79: jo 0x469004e02f26
    Move $0xffff000000000000, %rax, $-281474976710656(@14)
        0x469004e02e7f: mov $0xffff000000000000, %rax
    Add64 %rcx, %rax, %rax, @62
        0x469004e02e89: add %rcx, %rax
    Ret64 %rax, @63
        0x469004e02e8c: mov %rbp, %rsp
        0x469004e02e8f: pop %rbp
        0x469004e02e90: ret
BB#3: ; frequency = 1.000000
  Predecessors: #0
    Move 16(%rdx), %rcx, @52
        0x469004e02e91: mov 0x10(%rdx), %rcx
    Jump @55
        0x469004e02e95: jmp 0x469004e02e73
  Successors: #2

* CMakeLists.txt:
* JavaScriptCore.xcodeproj/project.pbxproj:
* b3/air/AirCode.h:
(JSC::B3::Air::Code::setDisassembler):
(JSC::B3::Air::Code::disassembler):
* b3/air/AirDisassembler.cpp: Added.
(JSC::B3::Air::Disassembler::startEntrypoint):
(JSC::B3::Air::Disassembler::endEntrypoint):
(JSC::B3::Air::Disassembler::startLatePath):
(JSC::B3::Air::Disassembler::endLatePath):
(JSC::B3::Air::Disassembler::startBlock):
(JSC::B3::Air::Disassembler::addInst):
(JSC::B3::Air::Disassembler::dump):
* b3/air/AirDisassembler.h: Added.
* b3/air/AirGenerate.cpp:
(JSC::B3::Air::generate):
* ftl/FTLCompile.cpp:
(JSC::FTL::compile):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@212775 268f45cc-cd09-0410-ab3c-d52691b4dbfc