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8751 Commits

Author SHA1 Message Date
Chris Lattner d051af7551 add a new MachineBasicBlock::getSymbol method, replacing 
the AsmPrinter::GetMBBSymbol.

llvm-svn: 94515
 2010-01-26 04:55:51 +00:00
Lang Hames 090c7e82dd New PBQP solver. 
* Fixed a reduction bug which occasionally led to infinite-cost (invalid)
  register allocation solutions despite the existence finite-cost solutions.
* Significantly reduced memory usage (>50% reduction).
* Simplified a lot of the solver code.

llvm-svn: 94514
 2010-01-26 04:49:58 +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
Evan Cheng 555f61bf58 Implement cond ? -1 : 0 with sbb. 
llvm-svn: 94490
 2010-01-26 02:00:44 +00:00
Dale Johannesen d5575f29f1 Generate DEBUG_VALUE comments on x86. The (limited) 
dbg.declare's we currently generate go through both
register allocators without perturbing the results.

llvm-svn: 94480
 2010-01-26 00:09:58 +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 a14ac3fd80 prep work to support a future where getJumpTableInfo will return 
a null pointer for functions with no jump tables.  No functionality
change.

llvm-svn: 94469
 2010-01-25 23:22:00 +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 823aed16f9 make -fno-rtti the default unless a directory builds with REQUIRES_RTTI. 
llvm-svn: 94378
 2010-01-24 20:43:08 +00:00
Chris Lattner 62f2840572 fix some issues where we weren't emitting enough newlines. 
llvm-svn: 94370
 2010-01-24 19:01:06 +00:00
Chris Lattner 5adf987417 when emitting DIEs, emit the comment on the same line as the directive. 
This fixes FrontendObjC/2009-11-30-Objc-ID.m

llvm-svn: 94369
 2010-01-24 18:54:17 +00:00
Mon P Wang 4f45512c23 It seems better to scalarize vectors of size 1 instead of widening them. 
Add support to widen SETCC.

llvm-svn: 94342
 2010-01-24 00:24:43 +00:00
Mon P Wang 586d997e98 Improved widening loads by adding support for wider loads if 
the alignment allows.  Fixed a bug where we didn't use a
vector load/store for PR5626.

llvm-svn: 94338
 2010-01-24 00:05:03 +00:00
Bill Wendling 8cbc25d945 Remove the '-disable-scheduling' flag and replace it with the 'source' option of 
the '-pre-RA-sched' flag. It actually makes more sense to do it this way. Also,
keep track of the SDNode ordering by default. Eventually, we would like to make
this ordering a way to break a "tie" in the scheduler. However, doing that now
breaks the "CodeGen/X86/abi-isel.ll" test for 32-bit Linux.

llvm-svn: 94308
 2010-01-23 10:26:57 +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 e244ff35d8 remove a dead call. 
llvm-svn: 94297
 2010-01-23 07:17:54 +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 ded9af63bb teach MCAsmStreamer::EmitBytes to use .ascii and .asciz 
llvm-svn: 94259
 2010-01-23 00:15:00 +00:00
Evan Cheng c22893a3b7 Enable pre-regalloc scheduling load clustering by default. 
llvm-svn: 94255
 2010-01-22 23:49:45 +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 56940ab899 remove uses of EOL. 
llvm-svn: 94252
 2010-01-22 23:43:14 +00:00
Chris Lattner 7859b1c226 add a new EmitCFAByte method and use it. 
llvm-svn: 94251
 2010-01-22 23:40:08 +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
Devang Patel ac277eb930 Remove MetadataBase class because it is not adding significant value. 
llvm-svn: 94243
 2010-01-22 22:52:10 +00:00
Dale Johannesen 7048797468 Ignore DEBUG_VALUE when building live intervals; 
this makes the code work transparently the same
whether they're there or not.

llvm-svn: 94240
 2010-01-22 22:38:21 +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
Chris Lattner 69bb026835 rename the dwarf class to DwarfPrinter. This matches the filename 
and much more accurately describes what it is all about.

llvm-svn: 94233
 2010-01-22 22:23:57 +00:00
Chris Lattner 00a6ae240e fix indentation 
llvm-svn: 94232
 2010-01-22 22:19:51 +00:00
Chris Lattner f5c834fce1 inline away the trivial AsmPrinter::EOL() method. 
llvm-svn: 94230
 2010-01-22 22:09:00 +00:00