Commit Graph

522 Commits

Author SHA1 Message Date
Chris Lattner 3af635a296 add a comment in verbose-asm mode indicating why a noop is being generated.
llvm-svn: 102401
2010-04-26 23:41:43 +00:00
Chris Lattner 6a5e706e3c on darwin empty functions need to codegen into something of non-zero length,
otherwise labels get incorrectly merged.  We handled this by emitting a 
".byte 0", but this isn't correct on thumb/arm targets where the text segment
needs to be a multiple of 2/4 bytes.  Handle this by emitting a noop.  This
is more gross than it should be because arm/ppc are not fully mc'ized yet.

This fixes rdar://7908505

llvm-svn: 102400
2010-04-26 23:37:21 +00:00
Chris Lattner f740a8ceeb fix PR6921 a different way. Intead of increasing the
alignment of globals with a specified alignment, we fix
common variables to obey their alignment.  Add a comment
explaining why this behavior is important.

llvm-svn: 102365
2010-04-26 18:46:46 +00:00
Chris Lattner e80442aa6d Revert r102300/102301, which serious broke objc apps.
llvm-svn: 102359
2010-04-26 18:30:45 +00:00
Chris Lattner 386a220f70 Fix PR6921: globals were not getting correctly rounded up to their
preferred alignment unless they were common or some other special
case.

llvm-svn: 102300
2010-04-25 05:30:43 +00:00
Chris Lattner 5100367ff3 Bill's change in r95336 broke empty aggregates embedded
in other types.  fix this by only bumping zero-byte globals
up to a single byte if the *entire global* is zero size,
fixing PR6340.

This also fixes empty arrays etc to be handled correctly,
and only does this on subsection-via-symbols targets (aka
darwin) which is the only place where this matters.

llvm-svn: 101879
2010-04-20 06:20:21 +00:00
Dan Gohman 53d4a08d2b Add const qualifiers to TargetLoweringObjectFile usage.
llvm-svn: 101640
2010-04-17 16:44:48 +00:00
Devang Patel 12563b3495 Add support to emit dwarf ranges.
llvm-svn: 101575
2010-04-16 23:33:45 +00:00
Chris Lattner 5418dd5fda move elf section uniquing to MCContext. Along the way
merge XCore's section into MCSectionELF

llvm-svn: 100812
2010-04-08 21:26:26 +00:00
Chris Lattner 2104b8d36e rename llvm::llvm_report_error -> llvm::report_fatal_error
llvm-svn: 100709
2010-04-07 22:58:41 +00:00
Chris Lattner b50e795369 tidy up
llvm-svn: 100700
2010-04-07 22:29:10 +00:00
Chris Lattner 29233c0458 add a comment line that got dropped
llvm-svn: 100638
2010-04-07 18:10:38 +00:00
Torok Edwin f8dba24a9b Workaround the breakage in r100616 by guarding all timers with
TimePassesIsEnabled. This should allow make check to pass.

llvm-svn: 100618
2010-04-07 10:44:46 +00:00
Benjamin Kramer 43c275fa56 Use raw_ostream.
llvm-svn: 100615
2010-04-07 09:26:51 +00:00
Dale Johannesen 5d7f0a0fdd Move printing of target-indepedent DEBUG_VALUE comments
into AsmPrinter.  Target-dependent form is still generated
by FastISel and still handled in X86 code.

llvm-svn: 100596
2010-04-07 01:15:14 +00:00
Dale Johannesen b36c70913b Revert 100573, it's causing some testsuite problems.
llvm-svn: 100578
2010-04-06 22:45:26 +00:00
Dale Johannesen 85b35b6214 Move printing of DEBUG_VALUE comments to target-independent place.
There is probably a more elegant way to do this.

llvm-svn: 100573
2010-04-06 22:21:07 +00:00
Chris Lattner 92aba5a817 propagate cookie management out one layer of function calls.
llvm-svn: 100510
2010-04-06 00:58:50 +00:00
Devang Patel fc4a1db23b Remove unnecessary include.
llvm-svn: 100505
2010-04-06 00:38:32 +00:00
Chris Lattner f0d6bd3ef4 change AsmPrinter to use DwarfDebug/DwarfException directly
instead of going through DwarfWriter.

llvm-svn: 100405
2010-04-05 05:11:15 +00:00
Chris Lattner 626cb66fdb just have all targets create the DwarfWriter.
llvm-svn: 100377
2010-04-05 00:42:55 +00:00
Chris Lattner 3a383cb7d9 1) make DIE take AsmPrinter instead of DwarfPrinter.
2) change DwarfDebug to not inherit from DwarfPrinter.

llvm-svn: 100372
2010-04-05 00:13:49 +00:00
Chris Lattner 4e4549deea resolve a fixme.
llvm-svn: 100346
2010-04-04 19:28:59 +00:00
Chris Lattner a179b52361 move gettemplabel and getdwlabel to AsmPrinter and rename
them for consistency.

llvm-svn: 100345
2010-04-04 19:25:43 +00:00
Chris Lattner 2b40a207bc more interface cleanup make some helpers static functions.
llvm-svn: 100343
2010-04-04 18:58:53 +00:00
Chris Lattner 7bde8c07a7 clean up the asmprinter header and privatize some stuff.
llvm-svn: 100342
2010-04-04 18:52:31 +00:00
Chris Lattner 1e15869d1f split inline asm support out to its own .cpp file.
llvm-svn: 100340
2010-04-04 18:34:07 +00:00
Chris Lattner 8ff29c523e inline processDebugLoc and simplify it.
llvm-svn: 100339
2010-04-04 18:18:51 +00:00
Chris Lattner c334d80b0d minor tidying.
llvm-svn: 100338
2010-04-04 18:16:38 +00:00
Chris Lattner 4a4710a055 clean up the asmprinter interface a bit, rename a few
"Print" methods to "Emit".  Emit is something that goes
to an mc streamer, Print is something that goes to a
raw_ostream (for inline asm) 

llvm-svn: 100337
2010-04-04 18:14:01 +00:00
Chris Lattner 21dc46e256 remove TargetMachine.h #include, also, TRI isn't used frequently
enough to warrant caching in AsmPrinter, so remove it.

llvm-svn: 100336
2010-04-04 18:06:11 +00:00
Chris Lattner 2cf5f9ec05 lazily allocate the GCMetadataPrinters map and remove DenseMap
from the AsmPrinter interface.

llvm-svn: 100331
2010-04-04 17:57:56 +00:00
Chris Lattner d20699bc87 Momentous day: remove the "O" member from AsmPrinter. Now all
"asm printering" happens through MCStreamer.  This also 
Streamerizes PIC16 debug info, which escaped my attention.

This removes a leak from LLVMTargetMachine of the 'legacy'
output stream.

llvm-svn: 100327
2010-04-04 08:18:47 +00:00
Chris Lattner 462720b1b6 now that all operand printing happens to specified streams, we can
print function level inline asm with EmitInlineAsm instead of writing
it directly to "O".

llvm-svn: 100326
2010-04-04 07:50:12 +00:00
Chris Lattner 1198002c81 remove the raw_ostream from various dwarf printing things.
The only thing left is LEB printing, which uses EmitRawText
for now.

llvm-svn: 100325
2010-04-04 07:48:20 +00:00
Chris Lattner ef8240bbac mcize the gc metadata printing stuff.
llvm-svn: 100324
2010-04-04 07:39:04 +00:00
Chris Lattner dd89ce9a82 use EmitRawText instead of O in DwarfPrinter.
llvm-svn: 100323
2010-04-04 07:25:52 +00:00
Chris Lattner 3bb09768cb fix PrintAsmOperand and PrintAsmMemoryOperand to pass down
raw_ostream to print to.

llvm-svn: 100313
2010-04-04 05:29:35 +00:00
Chris Lattner 0124fe38a6 change this back too
llvm-svn: 100310
2010-04-04 05:09:10 +00:00
Chris Lattner aa70abba05 check in what I tested. :(
llvm-svn: 100309
2010-04-04 05:08:10 +00:00
Chris Lattner f64c982943 MMI is always available, rename O -> OS in printInlineAsm.
llvm-svn: 100308
2010-04-04 05:07:45 +00:00
Chris Lattner 76c564b1bb change a ton of code to not implicitly use the "O" raw_ostream
member of AsmPrinter.  Instead, pass it in explicitly.

llvm-svn: 100306
2010-04-04 04:47:45 +00:00
Chris Lattner f33c7fcc28 asmstreamerize the .size directive for function bodies, force clients
of printOffset to pass in a stream to print to.

llvm-svn: 100296
2010-04-03 22:28:33 +00:00
Chris Lattner c6d67d4ca5 emit the cygwin stub thing through mcstreamer.
llvm-svn: 100295
2010-04-03 22:19:41 +00:00
Chris Lattner 1716721df1 add a twine form of MCStreamer::EmitRawText, and mc'ize
a few more things in AsmPrinter.cpp.

llvm-svn: 100294
2010-04-03 22:12:35 +00:00
Chris Lattner 86d61b5837 start moving towards emitting inline asm statements with
EmitInlineAsm.  However, this attempt is foiled by operands
being emitted directly to "O" so I'll have to do some surgery
and finish MCizing the world.

llvm-svn: 100291
2010-04-03 22:01:50 +00:00
Chris Lattner 8a87fb7633 add a new EmitInlineAsm function to asmprinter to handle inline asm.
If we have an MCAsmStreamer, we continue to emit asm textually, 
otherwise we (currently) emit an error to errs and ignore it.

llvm-svn: 100289
2010-04-03 21:35:55 +00:00
Chris Lattner fed39fa7b3 mc'ize comment printing around file scope inline asm.
llvm-svn: 100288
2010-04-03 21:13:18 +00:00
Chris Lattner 915c5f9862 Switch the code generator (except the JIT) onto the new DebugLoc
representation.  This eliminates the 'DILocation' MDNodes for 
file/line/col tuples from -O0 -g codegen.

This remove the old DebugLoc class, making it a typedef for DebugLoc,
I'll rename NewDebugLoc next.

I didn't update the JIT to use the new apis, so it will continue to
work, but be as slow as before.  Someone should eventually do this
or, better yet, rip out the JIT debug info stuff and build the JIT
on top of MC.

llvm-svn: 100209
2010-04-02 19:42:39 +00:00
Chris Lattner 9897043928 Rip out the 'is temporary' nonsense from the MCContext interface to
create symbols.  It is extremely error prone and a source of a lot
of the remaining integrated assembler bugs on x86-64.

This fixes rdar://7807601.

llvm-svn: 99902
2010-03-30 18:10:53 +00:00
Devang Patel bd477bef25 Refactor code to push DILocation prcessing into DwarfDebug.cpp from AsmPrinter.cpp.
This is same as r99772 (which was reverted) with just one meaningful difference where two source lines exchanged their positions.

llvm-svn: 99816
2010-03-29 17:20:31 +00:00
Devang Patel 1e8ccb5f8b Revert 99772.
llvm-svn: 99778
2010-03-28 21:23:37 +00:00
Devang Patel 32bdaef3fe Refactoring. Push DILocation processing in to DwarfDebug from AsmPrinter.
llvm-svn: 99772
2010-03-28 18:57:09 +00:00
Chris Lattner 8fce3dddfa reapply r98656 unmodified, which exposed the asmprinter not
handling constant unions.

llvm-svn: 98680
2010-03-16 21:25:55 +00:00
Daniel Dunbar 3a374da973 Revert r98656, its breaking all over the place.
llvm-svn: 98662
2010-03-16 19:35:34 +00:00
Chris Lattner 9ae99e0df5 improve support for uniontype and ConstantUnion, patch by Tim Northover!
llvm-svn: 98656
2010-03-16 19:15:03 +00:00
Chris Lattner db035a0af2 Fix the third (and last known) case of code update problems due
to LLVM IR changes with addr label weirdness.  In the testcase, we
generate references to the two bb's when codegen'ing the first
function:

_test1:                                 ## @test1
	leaq	Ltmp0(%rip), %rax
..
	leaq	Ltmp1(%rip), %rax

Then continue to codegen the second function where the blocks
get merged.  We're now smart enough to emit both labels, producing
this code:

_test_fun:                              ## @test_fun
## BB#0:                                ## %entry
Ltmp1:                                  ## Block address taken
Ltmp0:
## BB#1:                                ## %ret
	movl	$-1, %eax
	ret

Rejoice.

llvm-svn: 98595
2010-03-16 00:29:39 +00:00
Chris Lattner 561334a81f Implement support for the case when a reference to a addr-of-bb
label is generated, but then the block is deleted.  Since the
value is undefined, we just emit the label right after the entry 
label of the function.  It might matter that the label is in the
same section as the function was afterall.

llvm-svn: 98579
2010-03-15 20:39:00 +00:00
Devang Patel a3e9c9ca7b Emit dwarf variable info communicated by code generator through DBG_VALUE machine instructions.
This is a work in progress.

llvm-svn: 98556
2010-03-15 18:33:46 +00:00
Chris Lattner f18c0e6b4b remove dead method.
llvm-svn: 98526
2010-03-15 00:00:42 +00:00
Chris Lattner 9efbbcbe45 fix AsmPrinter::GetBlockAddressSymbol to always return a unique
label instead of trying to form one based on the BB name (which
causes collisions if the name is empty).  This fixes PR6608

llvm-svn: 98495
2010-03-14 17:53:23 +00:00
Chris Lattner c26f44fb07 change the DBG_LABEL MachineInstr to always be created
with an MCSymbol instead of an immediate.

llvm-svn: 98481
2010-03-14 07:56:48 +00:00
Chris Lattner 1065f49ad9 switch GC_LABEL to use an MCSymbol operand instead of a label ID operand.
llvm-svn: 98474
2010-03-14 07:27:07 +00:00
Chris Lattner ee2fbbc978 change the LabelSDNode to be EHLabelSDNode and make it hold
an MCSymbol.  Make the EH_LABEL MachineInstr hold its label
with an MCSymbol instead of ID.  Fix a bug in MMI.cpp which
would return labels named "Label4" instead of "label4".

llvm-svn: 98463
2010-03-14 02:33:54 +00:00
Chris Lattner 29bdac4928 eliminate the now-unneeded context argument of MBB::getSymbol()
llvm-svn: 98451
2010-03-13 21:04:28 +00:00
Chris Lattner e468f88b26 rearrange MCContext ownership. Before LLVMTargetMachine created it
and passing off ownership to AsmPrinter.  Now MachineModuleInfo
creates it and owns it by value.  This allows us to use MCSymbols
more consistently throughout the rest of the code generator, and
simplifies a bit of code.  This also allows MachineFunction to 
keep an MCContext reference handy, and cleans up the TargetRegistry
interfaces for AsmPrinters.

llvm-svn: 98450
2010-03-13 20:55:24 +00:00
Chris Lattner 5ea039ad5c remove gone method, grr symlinks.
llvm-svn: 98392
2010-03-12 21:30:49 +00:00
Chris Lattner 9e4cafe6f1 inline the now-trivial implementation of GetGlobalValueSymbol into
some of its callers.

llvm-svn: 98388
2010-03-12 21:09:07 +00:00
Chris Lattner c7b46f9d9c give Mangler access to TargetData.
llvm-svn: 98378
2010-03-12 20:47:28 +00:00
Chris Lattner be3242b523 finally give Mangler a getSymbol method, which returns an MCSymbol
for a global instead of messing around with string buffers.

llvm-svn: 98366
2010-03-12 18:55:20 +00:00
Chris Lattner 2eff505fba make the mangler take an MCContext instead of an MAI.
No functionality change.

llvm-svn: 98363
2010-03-12 18:44:54 +00:00
Richard Osborne 6d3e92dfee Add a new jump table encoding to indicate jump tables entries
are inside the function by the target at the point of use.

llvm-svn: 98255
2010-03-11 14:58:16 +00:00
Chris Lattner ac2361a9b0 set the temporary bit on MCSymbols correctly.
llvm-svn: 98124
2010-03-10 02:25:11 +00:00
Chris Lattner ba35a67062 reapply r98035:
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.

llvm-svn: 98047
2010-03-09 04:54:43 +00:00
Eric Christopher 66194fbf86 Speculatively revert r98035. It appears to have caused a set of buildbot
failures.

llvm-svn: 98039
2010-03-09 02:36:31 +00:00
Chris Lattner 06c5e9060c Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.

llvm-svn: 98035
2010-03-09 02:08:02 +00:00
Chris Lattner 9e57c676dd mcstreamerize AsmPrinter::printLabel.
llvm-svn: 98025
2010-03-09 01:02:30 +00:00
Chris Lattner b14490d912 add a EmitSymbolValue convenience method to MCStreamer.
llvm-svn: 98017
2010-03-09 00:39:24 +00:00
Chris Lattner 9889c1eb9e move .set generation out of DwarfPrinter into AsmPrinter and
MCize it.

llvm-svn: 98010
2010-03-08 23:58:37 +00:00
Devang Patel 3b548aa8e2 Avoid using DIDescriptor.isNull().
This is a first step towards eliminating checks in Descriptor constructors.

llvm-svn: 97975
2010-03-08 20:52:55 +00:00
Devang Patel bc97f6b757 Revert r97947.
llvm-svn: 97963
2010-03-08 19:20:38 +00:00
Devang Patel fe28599f6f Avoid using DIDescriptor.isNull().
This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.

llvm-svn: 97947
2010-03-08 18:25:48 +00:00
Chris Lattner e4f249bc06 use OutStreamer.EmitCodeAlignment for alignment in the text
segment.

llvm-svn: 96967
2010-02-23 18:46:22 +00:00
Chris Lattner 1fa9c2cce4 move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter,
and add a sparc implementation that knows about delay slots.  Patch by
Nathan Keynes!

llvm-svn: 96492
2010-02-17 18:52:56 +00:00
Dan Gohman 4a618827de Fix "the the" and similar typos.
llvm-svn: 95781
2010-02-10 16:03:48 +00:00
Chris Lattner ea26fa9971 fix a layering violation: VirtRegRewriter.cpp shouldn't use AsmPrinter.h.
llvm-svn: 95748
2010-02-10 01:23:18 +00:00
Chris Lattner 74e6852510 Move verbose asm instruction comments to using MCStreamer.
The major win of this is that the code is simpler and they 
print on the same line as the instruction again:

        movl    %eax, 96(%esp)          ## 4-byte Spill
        movl    96(%esp), %eax          ## 4-byte Reload
        cmpl    92(%esp), %eax          ## 4-byte Folded Reload
        jl      LBB7_86

llvm-svn: 95738
2010-02-10 00:47:53 +00:00
Chris Lattner ff68a42121 print all the newlines at the end of instructions with
OutStreamer.AddBlankLine instead of textually.

llvm-svn: 95734
2010-02-10 00:36:00 +00:00
Chris Lattner b06015aa69 move target-independent opcodes out of TargetInstrInfo
into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.

llvm-svn: 95687
2010-02-09 19:54:29 +00:00
Dan Gohman 227077d1be Implement AsmPrinter support for several more operators which have
direct MCExpr equivalents. Don't use MCExpr::Shr because it isn't
consistent between targets.

llvm-svn: 95620
2010-02-09 00:02:37 +00:00
Chris Lattner ebc970e4eb now that @GOTOFF is no longer represented as a suffix on a
MCSymbol, we can remove the 'suffix' argument of 
GetBlockAddressSymbol.  Do so.

llvm-svn: 95601
2010-02-08 23:10:08 +00:00
Dan Gohman e51b57bee0 ConstantFoldConstantExpression can theoretically return the original
expression; don't go into an infinite loop if it does.

llvm-svn: 95591
2010-02-08 22:19:11 +00:00
Dan Gohman 4268d6a7c3 When CodeGen'ing unoptimized code, there may be unfolded constant expressions
in global initializers. Instead of aborting, attempt to fold them on the
spot. If folding succeeds, emit the folded expression instead.

This fixes PR6255.

llvm-svn: 95583
2010-02-08 22:02:38 +00:00
Bill Wendling 6510dc8dc3 An empty global constant (one of size 0) may have a section immediately
following it. However, the EmitGlobalConstant method wasn't emitting a body for
the constant. The assembler doesn't like that. Before, we were generating this:

  .zerofill __DATA, __common, __cmd, 1, 3

This fix puts us back to that semantic.

llvm-svn: 95336
2010-02-05 00:17:02 +00:00
Chris Lattner 0b78cc2af5 don't emit \n's at the start of X86AsmPrinter::runOnMachineFunction,
.o files don't like that.

llvm-svn: 95187
2010-02-03 01:49:49 +00:00
Chris Lattner f1866ab682 privatize a bunch of methods and move \n printing into them.
llvm-svn: 95186
2010-02-03 01:46:05 +00:00
Chris Lattner 996ec840d0 rejigger the world so that EmitInstruction prints the \n at
the end of the instruction instead of expecting the caller to
do it.  This currently causes the asm-verbose instruction 
comments to be on the next line.

llvm-svn: 95178
2010-02-03 01:09:55 +00:00
Chris Lattner 41ad1905c9 sink handling of target-independent machine instrs (other
than DEBUG_VALUE :(  ) into the target indep AsmPrinter.cpp
file.   This allows elimination of the 
NO_ASM_WRITER_BOILERPLATE hack among other things.

llvm-svn: 95177
2010-02-03 01:00:52 +00:00
Chris Lattner b0d44c3807 refactor code so that LLVMTargetMachine creates the asmstreamer and
mccontext instead of having AsmPrinter do it.  This allows other 
types of MCStreamer's to be passed in.

llvm-svn: 95155
2010-02-02 23:37:42 +00:00
Chris Lattner 32445d300f move handling of asm-verbose out of AsmPrinter.cpp into LLVMTargetMachine.cpp with the rest of the command line options.
llvm-svn: 95152
2010-02-02 22:54:51 +00:00
Chris Lattner c968f4475e add target hooks for emitting random gunk before and after the function body.
llvm-svn: 94732
2010-01-28 01:58:58 +00:00
Chris Lattner 73de5fbfc3 Give AsmPrinter the most common expected implementation of
runOnMachineFunction, and switch PPC to use EmitFunctionBody.
The two ppc asmprinters now don't heave to define 
runOnMachineFunction.

llvm-svn: 94722
2010-01-28 01:28:58 +00:00
Chris Lattner 565896b9eb emit a 0 byte instead of a noop if a function is empty on darwin.
"0" is nice and target independent.

llvm-svn: 94718
2010-01-28 01:06:32 +00:00
Chris Lattner 94a946cac4 Remove the argument from EmitJumpTableInfo, because it doesn't need it.
Move the X86 implementation of function body emission up to 
AsmPrinter::EmitFunctionBody, which works by calling the virtual
EmitInstruction method.

llvm-svn: 94716
2010-01-28 01:02:27 +00:00
Chris Lattner 2b796241a7 Drop the argument to AsmPrinter::EmitConstantPool and make it virtual.
Overload it in the ARM backend to do nothing, since is does insane
constant pool emission.

llvm-svn: 94708
2010-01-28 00:19:24 +00:00
Chris Lattner cd99546b03 rename printVisibility to EmitVisibility and make it private,
constify EmitLinkage.

llvm-svn: 94705
2010-01-28 00:05:10 +00:00
Chris Lattner bc1e6f0873 add a new AsmPrinter::EmitFunctionEntryLabel virtual function,
which allows targets to override function entry label emission.
Use it to convert linux/ppc to use EmitFunctionHeader().

llvm-svn: 94667
2010-01-27 07:21:55 +00:00
Chris Lattner bac7498f8e mcize label emission for functions.
llvm-svn: 94624
2010-01-26 23:53:39 +00:00
Chris Lattner fc2e376a15 use EmitLinkage for functions as well as globals. One output
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.

llvm-svn: 94623
2010-01-26 23:51:52 +00:00
Chris Lattner dbf5a7617d pull linkage emission code out to a new EmitLinkage function.
llvm-svn: 94621
2010-01-26 23:47:12 +00:00
Chris Lattner 22fc38dd4f rearrange some directives, no functionality change.
llvm-svn: 94620
2010-01-26 23:41:48 +00:00
Chris Lattner c7b91156e4 now that enough stuff is constified, move function header printing
logic up from X86 into the common code.  The other targets will 
hopefully start using this soon.

llvm-svn: 94614
2010-01-26 23:18:44 +00:00
Chris Lattner b657c4cdc3 emit jump table an alias ".set" directives through MCStreamer as
assignments.

.set x, a-b

is the same as:

x = a-b

llvm-svn: 94596
2010-01-26 21:53:08 +00:00
Chris Lattner ff234e09b9 Eliminate SetDirective, and replace it with HasSetDirective.
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.

llvm-svn: 94585
2010-01-26 20:40:54 +00:00
Chris Lattner 547c761dd6 eliminate the TargetLowering::UsesGlobalOffsetTable bool, which is
subsumed by TargetLowering::getJumpTableEncoding().  Change uses of
it to be more specific.

llvm-svn: 94529
2010-01-26 06:53:37 +00:00
Chris Lattner 4db603f93b Now that printPICJumpTableSetLabel is not overloaded,
inline it into its only caller, allowing us to simplify it
and hoist bits out of the loop.

llvm-svn: 94528
2010-01-26 06:42:44 +00:00
Chris Lattner 8a785d7a67 Move getJTISymbol from MachineJumpTableInfo to MachineFunction,
which is more convenient, and change getPICJumpTableRelocBaseExpr
to take a MachineFunction to match.

Next, move the X86 code that create a PICBase symbol to
X86TargetLowering::getPICBaseSymbol from 
X86MCInstLower::GetPICBaseSymbol, which was an asmprinter specific 
library.  This eliminates a 'gross hack', and allows us to
implement X86ISelLowering::getPICJumpTableRelocBaseExpr which now
calls it.

This in turn allows us to eliminate the 
X86AsmPrinter::printPICJumpTableSetLabel method, which was the
only overload of printPICJumpTableSetLabel.

llvm-svn: 94526
2010-01-26 06:28:43 +00:00
Chris Lattner 273735bc5a add a new MachineJumpTableInfo::getJTISymbol method,
use it to implement the default TargetLowering::getPICJumpTableRelocBaseExpr

llvm-svn: 94523
2010-01-26 05:58:28 +00:00
Chris Lattner cc0f734cd0 simplify asmprinter: only emit .set directives when entries have
EK_LabelDifference32 kind and the target has .set support.  Simplify
X86AsmPrinter::printPICJumpTableSetLabel to make use of recent helpers.

llvm-svn: 94518
2010-01-26 05:15:20 +00:00
Chris Lattner 279de3ef64 rename printPICJumpTableEntry -> EmitJumpTableEntry,
make it private and non-virtual.  It handles the non-pic
case too, so just use it, simplifying EmitJumpTableInfo.

llvm-svn: 94517
2010-01-26 05:10:10 +00:00
Chris Lattner d051af7551 add a new MachineBasicBlock::getSymbol method, replacing
the AsmPrinter::GetMBBSymbol.

llvm-svn: 94515
2010-01-26 04:55:51 +00:00
Chris Lattner 6715952c25 make MachineFunction keep track of its ID and make
MachineFunctionAnalysis dole them out, instead of having
AsmPrinter do both.  Have the AsmPrinter::SetupMachineFunction
method set the 'AsmPrinter::MF' variable.

llvm-svn: 94509
2010-01-26 04:35:26 +00:00
Chris Lattner 5fc4160ea3 Add support for target-specific 32-bit custom-lowered
jump table entries.

llvm-svn: 94505
2010-01-26 04:05:28 +00:00
Chris Lattner a7c116016e switch jump table entry emission to be based on EntryKind
instead of magic variables.

llvm-svn: 94500
2010-01-26 03:43:22 +00:00
Chris Lattner b6db2c6b31 Rearrange handling of jump tables. Highlights:
1. MachineJumpTableInfo is now created lazily for a function the first time
   it actually makes a jump table instead of for every function.
2. The encoding of jump table entries is now described by the
   MachineJumpTableInfo::JTEntryKind enum.  This enum is determined by the
   TLI::getJumpTableEncoding() hook, instead of by lots of code scattered
   throughout the compiler that "knows" that jump table entries are always
   32-bits in pic mode (for example).
3. The size and alignment of jump table entries is now calculated based on
   their kind, instead of at machinefunction creation time.

Future work includes using the EntryKind in more places in the compiler,
eliminating other logic that "knows" the layout of jump tables in various
situations.

llvm-svn: 94470
2010-01-25 23:26:13 +00:00
Chris Lattner a4074257ab eliminate redundant argument to EmitJumpTableInfo
llvm-svn: 94464
2010-01-25 22:41:33 +00:00
Chris Lattner 3cde760023 mcstreamerize gprel32 emission.
llvm-svn: 94452
2010-01-25 21:28:50 +00:00
Chris Lattner 822742fef9 mcize the non-gprel cases of AsmPrinter::printPICJumpTableEntry
llvm-svn: 94450
2010-01-25 21:22:22 +00:00
Chris Lattner 00d188f379 handle the _set_ symbol with an MCSymbol.
llvm-svn: 94449
2010-01-25 21:17:10 +00:00
Chris Lattner 19bd039896 rename MAI::PICJumpTableDirective to MAI::GPRel32Directive to
make it clear what it is, instead of how it is used.

llvm-svn: 94448
2010-01-25 21:10:10 +00:00
Chris Lattner 360aeb76a2 pull the non-pic jump table case out of printPICJumpTableEntry
and MCize the non-pic case.  Now printPICJumpTableEntry really
is just about printing PIC entries.

llvm-svn: 94446
2010-01-25 21:01:58 +00:00
Chris Lattner ccabcd7f85 remove JumpTableDirective, it is always null.
llvm-svn: 94445
2010-01-25 20:52:54 +00:00
Chris Lattner 6330d5330e sink an arm specific method out of asmprinter into the ARMAsmPrinter and
rename it to avoid shadowing.

llvm-svn: 94440
2010-01-25 19:39:52 +00:00
Chris Lattner 601ef33c77 mcstreamerize .file and .file. This also fixes an issue where the
normal form of .file would fail if the filename had a weird character
in it.

llvm-svn: 94437
2010-01-25 18:58:59 +00:00
Chris Lattner bc696445e1 emit ELF .type directives through MCStreamer instead of doing it textually.
llvm-svn: 94436
2010-01-25 18:33:40 +00:00
Chris Lattner 866a539f5f add a comment
llvm-svn: 94417
2010-01-25 07:53:05 +00:00
Chris Lattner 91dac6d570 emit the .size directive for global variables on ELF through
mcstreamer.

llvm-svn: 94416
2010-01-25 07:52:13 +00:00
Chris Lattner b1301f7bce mcize lcomm, simplify .comm, extend both to support 64-bit sizes.
llvm-svn: 94299
2010-01-23 07:47:02 +00:00
Chris Lattner 76bdea3290 resolve a fixme: the "nonexecutable stack directive" is actually
a .section.  Switch to it with SwitchSection.

However, I think that this directive should be safe on any ELF target.
If so, we should hoist it up out of the X86 and SystemZ targets.

llvm-svn: 94298
2010-01-23 07:21:06 +00:00
Chris Lattner 0bfd279b37 mcize visibility directives.
llvm-svn: 94295
2010-01-23 06:53:23 +00:00
Chris Lattner 685508cf49 move the various directive enums out of the MCStreamer class
into a new MCDirectives.h file.

llvm-svn: 94294
2010-01-23 06:39:22 +00:00
Chris Lattner d1acffc845 Change constantexpr global variable initializers to convert the constants
to MCExpr then emit them through MCStreamer with EmitValue.  I think all
global variable initializers are now going through mcstreamer.

llvm-svn: 94293
2010-01-23 06:17:14 +00:00
Chris Lattner 1deb09c28d mcstreamerize .no_dead_strip and .reference for static ctors/dtors.
llvm-svn: 94290
2010-01-23 05:51:36 +00:00
Chris Lattner 4225a7b987 mcize jump table and constant pool entry labels, .local on elf,
and some .weak directives.

llvm-svn: 94284
2010-01-23 05:19:23 +00:00
Chris Lattner 68eeb5ec9c emit .ascii and .asciz through MCStreamer.
llvm-svn: 94282
2010-01-23 04:54:10 +00:00
Chris Lattner c3f23b84ea remove one form of EmitString, just use EmitBytes instead. We must
be careful to add a \0 at the end though, because EmitString didn't
do this.

llvm-svn: 94277
2010-01-23 03:11:46 +00:00
Chris Lattner 6f2d99df03 move "EOL" from asmprinter to dwarfprinter. It should eventually
be completely eliminated, but today is not that day.

llvm-svn: 94253
2010-01-22 23:47:11 +00:00
Chris Lattner fa82355f33 move uleb printing from asmprinter to dwarfprinter, mcize,
cleanup and eliminate a bunch more uses of "EOL".

llvm-svn: 94250
2010-01-22 23:18:42 +00:00
Chris Lattner 2303145081 move sleb printing out of asmprinter into dwarf printer, make clients
handle the comment better, MCize the non-.sleb case.

llvm-svn: 94244
2010-01-22 22:56:55 +00:00
Chris Lattner edf96a4cc3 add a new DwarfPrinter::EmitEncodingByte method which handles
pretty printing encoding comments and eliminates redundancy on
the client side.  We now get pretty dwarf like this again:

        .byte   255                                         ## @LPStart Encoding = omit
        .byte   0                                           ## @TType Encoding = absptr
        .byte   0x28                                        ## @TType base offset
        .byte   3                                           ## Call site Encoding = udata4
        .byte   0x1a                                        ## Call site table size
...

llvm-svn: 94239
2010-01-22 22:38:16 +00:00