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82135e5a2f2f53a94de46d0c974e4ab90dac0bb5
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1034 Commits

Author SHA1 Message Date
Duncan Sands
2576db727b Remove unused variable. Tweak a comment while there. 
llvm-svn: 103586
 2010-05-12 07:11:33 +00:00
Nathan Jeffords
76a07580ad updated support for the COFF .linkonce 
Now, the .linkonce directive is emitted as part of MCSectionCOFF::PrintSwitchToSection instead of AsmPrinter::EmitLinkage since it is an attribute of the section the symbol was placed into not the symbol itself.

llvm-svn: 103568
 2010-05-12 04:26:09 +00:00
Devang Patel
1a0df9a80e Enable multiple Compile Units in one module. 
This means now 'llvm-ld a.bc b.bc' will preserve debug info appropriately.

llvm-svn: 103439
 2010-05-10 22:49:55 +00:00
Devang Patel
0625af2a88 Instead of just verifying compile unit, verify entire type, variable, namespace etc.. 
llvm-svn: 103327
 2010-05-07 23:33:41 +00:00
Devang Patel
cbe7a8508a Remove DIGlobal. 
llvm-svn: 103325
 2010-05-07 23:19:07 +00:00
Devang Patel
8d6a2b7428 Verify entire type descriptor not just tag. 
llvm-svn: 103303
 2010-05-07 21:45:47 +00:00
Devang Patel
32cc43c242 Wrap const MDNode * inside DIDescriptor. 
llvm-svn: 103295
 2010-05-07 20:54:48 +00:00
Devang Patel
cfa8e9d45f Avoid DIDescriptor::getNode(). Use overloaded operators instead. 
llvm-svn: 103272
 2010-05-07 18:11:54 +00:00
Dan Gohman
7421ae48bf Disable the new unknown-location code for now. It causes a major 
increase in the debug line info section, and it's causing
regressions in a gdb testsuite.

llvm-svn: 103226
 2010-05-07 01:08:53 +00:00
Dan Gohman
47d04e3e41 Update LabelsBeforeInsn also, when creating unknown-position labels. 
llvm-svn: 103145
 2010-05-06 00:29:41 +00:00
Chris Lattner
35096e82c5 Fix PR7054 - Assertion `Symbol->isUndefined() && "Cannot define a symbol twice!"' failed. 
Users can write broken code that emits the same label twice with asm renaming,
detect this and emit a fatal backend error instead of aborting.

llvm-svn: 103140
 2010-05-06 00:05:37 +00:00
Dan Gohman
50849c63e4 Emit debug info for MachineInstrs with unknown debug locations, instead 
of just letting them inherit the debug locations of adjacent instructions.

Debug info should aim to be either accurate or absent.

llvm-svn: 103135
 2010-05-05 23:41:32 +00:00
Devang Patel
075e9b5d66 Set DW_AT_APPLE_omit_frame_ptr in endFunction() where MachineFunction is available all the time. 
llvm-svn: 103001
 2010-05-04 06:15:30 +00:00
Dale Johannesen
1ebb395cee Don't count debug info as instructions. This was 
preventing the emission of the NOP on Darwin for a
function with no actual code.  From timberwolfmc
with TEST=optllcdbg.

llvm-svn: 102843
 2010-05-01 16:41:11 +00:00
Devang Patel
b4e3b9025c Attach AT_APPLE_optimized attribute to optimized function's debug info. 
llvm-svn: 102743
 2010-04-30 19:38:23 +00:00
Devang Patel
080e4fb2f0 Print variable scope name in DEBUG_VALUE comment. Useful in some cases. e.g. 
##DEBUG_VALUE: runOnMachineFunction:this <- RDI+0
	##DEBUG_VALUE: runOnMachineFunction:fn <- RSI+0
	##DEBUG_VALUE: DeadDefs <- undef ## SimpleRegisterCoalescing.cpp:2706
	##DEBUG_VALUE: getRegInfo:this <- [%rsp+$56]+$0
	##DEBUG_VALUE: getTarget:this <- [%rsp+$56]+$0

llvm-svn: 102655
 2010-04-29 18:52:10 +00:00
Chris Lattner
08e9e72fa9 Rework global alignment computation again. Now we do round up 
alignment of globals to the preferred alignment, but only when
there is no section specified on the global (by far the common
case).

llvm-svn: 102515
 2010-04-28 19:58:07 +00:00
Devang Patel
50c9431203 Emit debug info for byval parameters. 
llvm-svn: 102486
 2010-04-28 01:39:28 +00:00
Chris Lattner
a3facc5cb5 further simplify EmitAlignment by eliminating the 
ForcedAlignBits argument, tweaking the single client of it.

llvm-svn: 102484
 2010-04-28 01:08:40 +00:00
Chris Lattner
72bdee4c10 remove a dead argument to EmitAlignment. 
llvm-svn: 102483
 2010-04-28 01:06:02 +00:00
Chris Lattner
9e06e53fc6 remove some default arguments to EmitAlignment. 
llvm-svn: 102482
 2010-04-28 01:05:45 +00:00
Devang Patel
173b2b9d05 Refactor. 
llvm-svn: 102481
 2010-04-28 01:03:09 +00:00
Devang Patel
cfc76fdaf1 Use isReg(), isImm() and isFPImm(). 
llvm-svn: 102470
 2010-04-27 22:04:41 +00:00
Devang Patel
1f34c2727d Check operand type first. 
llvm-svn: 102468
 2010-04-27 21:49:04 +00:00
Devang Patel
1a0bbe25e3 Ignore DBG_VALUE instructions that points to undef values. 
llvm-svn: 102463
 2010-04-27 20:54:45 +00:00
Devang Patel
6c74a872a8 Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges. 
This patch fixes bug (PR6894) introduced by previous version of this patch.

llvm-svn: 102454
 2010-04-27 19:46:33 +00:00
Evan Cheng
eb828b6391 Do not count kill, implicit_def instructions as printed instructions. 
llvm-svn: 102453
 2010-04-27 19:38:45 +00:00
Chris Lattner
64d43d80be round zero-byte .zerofill directives up to 1 byte. This 
should fix some "g++.dg-struct-layout-1" failures, 
rdar://7886017

llvm-svn: 102421
 2010-04-27 07:41:44 +00:00
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
Devang Patel
bd798ce8dd Use DW_AT_entry_pc instead of DW_AT_low_pc/DW_AT_high_pc pair. This simplifies debug range entries. 
llvm-svn: 102394
 2010-04-26 22:54:28 +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
Dan Gohman
e9135cb3fb Revert 102135, 102129, 102127, 102106, 102104, 102102, 102012, 102004, 
because 102004 causes codegen to emit invalid assembly on at least
x86_64-unknown-gnu-linux.

llvm-svn: 102155
 2010-04-23 01:18:53 +00:00
Devang Patel
6adc5620ab Add comment. 
llvm-svn: 102129
 2010-04-22 20:56:35 +00:00
Devang Patel
ea2744f4dc Adjust debug range offsets for isWeakForLinker() functions. 
llvm-svn: 102127
 2010-04-22 20:52:00 +00:00
Devang Patel
0fde4aeedd Rename InsnAfterLabelMap and InsnBeforeLabelMap. 
llvm-svn: 102106
 2010-04-22 18:43:35 +00:00
Devang Patel
53f530d44c Keep track of MCSymbol used to mark beginning of a function. 
llvm-svn: 102104
 2010-04-22 18:39:21 +00:00
Devang Patel
bae14a1cab At this point Start and End are not null. 
llvm-svn: 102102
 2010-04-22 18:28:58 +00:00
Devang Patel
1a6e399874 Add command line option to disable debug info printing in .s file. This option does not impact debug info generation and preservation through earlier compile starges. 
llvm-svn: 102012
 2010-04-21 19:08:53 +00:00
Devang Patel
0940a8085e Identify when a lexical scope is split in to multiple instruction ranges. Emit such ranges using DW_AT_ranges. 
llvm-svn: 102004
 2010-04-21 16:32:19 +00:00
Evan Cheng
4158a0ff6b Implement -disable-non-leaf-fp-elim which disable frame pointer elimination 
optimization for non-leaf functions. This will be hooked up to gcc's
-momit-leaf-frame-pointer option. rdar://7886181

llvm-svn: 101984
 2010-04-21 03:18:23 +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
3df671a81c Remove MachineFunction's DefaultDebugLoc member, and make DwarfDebug.cpp 
responsible for figuring out what that's supposed to be on its own.

llvm-svn: 101844
 2010-04-20 00:37:27 +00:00
Devang Patel
6188093cca Add DW_AT_APPLE_omit_frame_ptr to encode -fomit-frame-pointer flag. 
llvm-svn: 101805
 2010-04-19 19:14:02 +00:00
Dan Gohman
53d4a08d2b Add const qualifiers to TargetLoweringObjectFile usage. 
llvm-svn: 101640
 2010-04-17 16:44:48 +00:00
Dan Gohman
88f7f6aeda Use const_cast instead of a C-style cast to cast away const. 
llvm-svn: 101639
 2010-04-17 16:43:55 +00:00
Devang Patel
12563b3495 Add support to emit dwarf ranges. 
llvm-svn: 101575
 2010-04-16 23:33:45 +00:00
Dan Gohman
b29cda9b3c Fix a bunch of namespace polution. 
llvm-svn: 101376
 2010-04-15 17:08:50 +00:00