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2010-02-26pass in more section kinds, enough to get the .align 0x90Chris Lattner
stuff to emit optimal nops in the right places. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97233 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25This is a patch to the assembler frontend to detect when aligning a textKevin Enderby
section with TextAlignFillValue and calls EmitCodeAlignment() instead of calling EmitValueToAlignment(). This allows x86 assembly code to be aligned with optimal nops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23This is the second patch to allow x86 code to be aligned with optimal nops.Kevin Enderby
With the compiler changed to use EmitCodeAlignment() it does change the functionality. But X86 assembly code assembled with llvm-mc does not change its output. For that we will eventually change the assembler frontend to detect a '.align x, 0x90' when used in a section that 'hasInstructions' and use EmitCodeAlignment, but will wait until we have better target hooks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96988 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23genericize MCAsmStreamer::EmitCodeAlignment to support other targetsChris Lattner
so that it doesn't break them when the code generator starts using it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96966 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23This is the first patch to put the needed bits in place to eventually allow codeKevin Enderby
to be aligned with optimal nops. This patch does not change any functionality and when the compiler is changed to use EmitCodeAlignment() it should also not change the resulting output. Once the compiler change is made and everything looks good the next patch with the table of optimal X86 nops will be added to WriteNopData() changing the output. There are many FIXMEs in this patch which will be removed when we have better target hooks (coming soon I hear). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96963 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22MC/Mach-O: Remove non-sensical comment, and add a missing AddValueSymbols call.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96809 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21MC/X86: Add stub AsmBackend.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96763 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21MC: Sketch registry support for target specific assembler backends.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96762 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17MC/Mach-O: Update fixup values for change to X86 offsets.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96532 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Pacify gcc-4.5, which warns (correctly) that these switches haveDuncan Sands
cases that are not part of the enum. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96477 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Fix pcrel relocations. Oh and,Daniel Dunbar
-- ddunbar@ozzy:tmp$ clang -m32 -integrated-as hello.c && ./a.out hello world! -- git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96096 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MC/Mach-O: Start emitting fixups/relocations for instructions.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96095 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Switch MCAsmFixup to storing MCFixupKind instead of just a size.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96094 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Sink fixup list into MCDataFragment.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96093 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Switch MCFillFragment to only taking constant values. Symbolic ↵Daniel Dunbar
expressions can always be emitted as data + fixups. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MC/Mach-O: Implement EmitValue using data fragments + fixups instead of fill ↵Daniel Dunbar
fragment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96091 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Start applying fixups in the data section.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96090 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MCAssembler: Add assorted dump() methods.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96089 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13MC/AsmParser: Attempt to constant fold expressions up-front. This ensures we ↵Daniel Dunbar
avoid fixups for obvious cases like '-(16)'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96064 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11add a new MCInstPrinter::getOpcodeName interface, when it is Chris Lattner
implemented, llvm-mc --show-inst now uses it to print the instruction opcode as well as the number. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95929 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11MC: Move assembler-backend's fixup list into the fragment.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95926 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11MC: Move MCSectionData::Fixup out to MCAsmFixup.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-11make getFixupKindInfo return a const reference, allowingChris Lattner
the tables to be const. Teach MCCodeEmitter to handle the target-indep kinds so that we don't crash on them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95924 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10MC: Switch MCFixup to just hold an MCExpr pointer instead of index into theDaniel Dunbar
MCInst it came from. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95767 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10llvm-mc: Remove --show-fixups and always show as part of --show-encoding.Daniel Dunbar
Also, fix a silly memory leak. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95752 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10daniel *really* likes fixups!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-10Add ability for MCInstPrinters to add comments for instructions.Chris Lattner
Enhance the x86 backend to show the hex values of immediates in comments when they are large. For example: movl $1072693248, 4(%esp) ## imm = 0x3FF00000 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95728 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09llvm-mc: Add --show-fixups option, for displaying the instruction fixup ↵Daniel Dunbar
information in the asm comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95710 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09MC: First cut at MCFixup, for getting fixup/relocation information out of an ↵Daniel Dunbar
MCCodeEmitter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95708 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-09make -show-inst be formatted a bit nicer. Before:Chris Lattner
movl $3735928559, a ## inst: <MCInst 1273 <MCOperand Reg:0> <MCOperand Imm:1> <MCOperand Reg:0> <MCOperand Expr:(a)> <MCOperand Reg:0> <MCOperand Expr:(3735928559)>> after: movl $3735928559, a ## <MCInst #1273 ## <MCOperand Reg:0> ## <MCOperand Imm:1> ## <MCOperand Reg:0> ## <MCOperand Expr:(a)> ## <MCOperand Reg:0> ## <MCOperand Expr:(3735928559)>> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08Document that MCExpr::Mod is actually remainder.Dan Gohman
Document that MCExpr::Div, Mod, and the comparison operators are all signed operators. Document that the comparison operators' results are target-dependent. Document that the behavior of shr is target-dependent. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95619 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08don't make hte dtor private or we can't construct the class.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95587 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-08add scaffolding for target-specific MCExprs.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95559 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05print encodings like this:Chris Lattner
pslld 69, %mm3 ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0x00,0x00,0x00] instead of like this: pslld 69, %mm3 ## encoding: [0x0f,0xf2,0x1c,0x25,0x45,0000,0000,0000] this only affects 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95441 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-05MC: Change default comment column to 40 characters.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95378 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04Use a tab instead of space after .type, for consistency.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95272 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03llvm-mc: Add --show-inst option, for showing the MCInst inline with the assemblyDaniel Dunbar
output. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95227 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-03print instruction encodings with the existing comment facilities,Chris Lattner
so that llvm-mc -show-encoding prints like this: hlt ## encoding: [0xf4] instead of like this: hlt # encoding: [0xf4] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95207 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02refactor code so that LLVMTargetMachine creates the asmstreamer and Chris Lattner
mccontext instead of having AsmPrinter do it. This allows other types of MCStreamer's to be passed in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95155 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02MC/Mach-O: Set SOME_INSTRUCTIONS bit for sections.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95135 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-02Add a new top-level MachO.h file for manifest constants, fixing Chris Lattner
a layering violation from MC -> Target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95113 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26use EmitLinkage for functions as well as globals. One outputChris Lattner
change is that we now use ".linkonce discard" for global variables instead of ".linkonce samesize". These should be the same, just less strict. If anyone is interested in mcizing MCSection for COFF targets, this should be easy to fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94623 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Eliminate SetDirective, and replace it with HasSetDirective.Chris Lattner
Default HasSetDirective to true, since most targets have it. The targets that claim to not have it probably do, or it is spelled differently. These include Blackfin, Mips, Alpha, and PIC16. All of these except pic16 are normal ELF targets, so they almost certainly have it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94585 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26Emit .comm alignment in bytes but .align in powers of 2 for ARM ELF.Rafael Espindola
Original patch by Sandeep Patel and updated by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94582 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26eliminate MCAsmInfo::NeedsSet: we now just use .set on any platformChris Lattner
that has it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94581 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25mcstreamerize gprel32 emission.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94452 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25rename MAI::PICJumpTableDirective to MAI::GPRel32Directive toChris Lattner
make it clear what it is, instead of how it is used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94448 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25remove JumpTableDirective, it is always null.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25wirte up .file and .file to the mc asmparser.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94438 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-25mcstreamerize .file and .file. This also fixes an issue where theChris Lattner
normal form of .file would fail if the filename had a weird character in it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94437 91177308-0d34-0410-b5e6-96231b3b80d8
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