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7346 Commits

Author SHA1 Message Date
David Greene
d1f9f45b05 Reorder if-else branches as suggested by Bill. 
llvm-svn: 76808
 2009-07-22 22:32:19 +00:00
David Greene
fede97eac6 Constify the key in Mi2IndexMap. 
llvm-svn: 76801
 2009-07-22 21:56:14 +00:00
Evan Cheng
88dbc00ca7 Ignore undef uses. 
llvm-svn: 76799
 2009-07-22 21:51:42 +00:00
Daniel Dunbar
3119e6a609 Switch some clients to Value::getName(), and other getName() user 
simplification.
 - NFC

llvm-svn: 76789
 2009-07-22 21:33:09 +00:00
David Greene
76d89c51ce Put comment printing under asm-verbose. 
llvm-svn: 76780
 2009-07-22 20:33:26 +00:00
David Greene
7f92a15a4b Make some changes suggested by Bill and Evan. 
llvm-svn: 76775
 2009-07-22 20:08:25 +00:00
Chris Lattner
e2bd5bc939 remove the SelectSectionForMachineConst hook, replacing it with 
a new getSectionForMergableConstant hook.  This removes one dependence
of TAI on Type, and provides the hook with enough info to make the 
right decision based on whether the global has relocations etc.

llvm-svn: 76705
 2009-07-22 00:28:43 +00:00
Evan Cheng
82499c09ff Let each target determines whether a machine instruction is dead. If true, that allows late codeine passes to delete it. 
This is considered a workaround. The problem is some targets are not modeling side effects correctly. PPC is apparently one of those. This patch allows ppc llvm-gcc to bootstrap on Darwin. Once we find out which instruction definitions are wrong, we can remove the PPCInstrInfo workaround.

llvm-svn: 76703
 2009-07-22 00:25:27 +00:00
Owen Anderson
cc287b28c9 Get rid of the Pass+Context magic. 
llvm-svn: 76702
 2009-07-22 00:24:57 +00:00
Chris Lattner
48dffde0d7 reimplement Constant::ContainsRelocations as 
Constant::getRelocationInfo(), which has a much simpler
to use API.  It still should not be part of libvmcore, but
is better than it was.  Also teach it to be smart about 
hidden visibility.

llvm-svn: 76700
 2009-07-22 00:05:44 +00:00
Lang Hames
0e61f87ea3 Exposed PHIElimination pass within CodeGen. 
llvm-svn: 76688
 2009-07-21 23:47:33 +00:00
David Greene
ddaf106a0c Add some support for iterative coalescers to calculate a joined live 
range's weight properly.  This is turned off right now in the sense that
you'll get an assert if you get into a situation that can only be caused
by an iterative coalescer.  All other code paths operate exactly as
before so there is no functional change with this patch.  The asserts
should be disabled if/when an iterative coalescer gets added to trunk.

llvm-svn: 76680
 2009-07-21 23:36:14 +00:00
Chris Lattner
fb908d7671 no really, I can spell! 
llvm-svn: 76679
 2009-07-21 23:36:01 +00:00
Chris Lattner
11b49ed2ce add an API so target-independent codegen can determine if a constant 
pool entry will require relocations against it.  I implemented this
conservatively for ARM, someone who is knowledgable about it should
see if this can be improved.

llvm-svn: 76678
 2009-07-21 23:34:23 +00:00
Bruno Cardoso Lopes
3483574772 Change ELFCodeEmitter logic to emit the constant pool and jump tables to 
their appropriate sections before the code itself. They need to be emitted
before the function because on some targets (x86 but not x86_64) the later
may reference a JT or CP entry address

llvm-svn: 76672
 2009-07-21 23:13:26 +00:00
Chris Lattner
135caf1a2b revert r76602, 76603, and r76615, pending design discussions. 
llvm-svn: 76646
 2009-07-21 21:12:58 +00:00
Eli Friedman
45160af6bd Remove shift amount flavor. It isn't actually complete enough to 
be useful, and it's currently unused.  (Some issues: it isn't actually 
rich enough to capture the semantics on many architectures, and
semantics can vary depending on the type being shifted.)

llvm-svn: 76633
 2009-07-21 20:12:16 +00:00
David Greene
94bfedaf40 Prefix IR dumps with LiveInterval indices when possible. This turns 
this:

	%ESI<def> = MOV32rr %EDI<kill>
	ADJCALLSTACKDOWN64 0, %RSP<imp-def>, %EFLAGS<imp-def,dead>, %RSP<imp-use>
	%reg1027<def> = MOVZX64rr32 %ESI
	%reg1027<def> = ADD64ri8 %reg1027, 15, %EFLAGS<imp-def,dead>
	%reg1027<def> = AND64ri8 %reg1027, -16, %EFLAGS<imp-def,dead>
	%RDI<def> = MOV64rr %RSP
	%RDI<def> = SUB64rr %RDI, %reg1027<kill>, %EFLAGS<imp-def,dead>
	%RSP<def> = MOV64rr %RDI

into this:

4	%reg1024<def> = MOV32rr %EDI<kill>
12	ADJCALLSTACKDOWN64 0, %RSP<imp-def>, %EFLAGS<imp-def,dead>, %RSP<imp-use>
20	%reg1025<def> = MOVZX64rr32 %reg1024
28	%reg1026<def> = MOV64rr %reg1025<kill>
36	%reg1026<def> = ADD64ri8 %reg1026, 15, %EFLAGS<imp-def,dead>
44	%reg1027<def> = MOV64rr %reg1026<kill>
52	%reg1027<def> = AND64ri8 %reg1027, -16, %EFLAGS<imp-def,dead>
60	%reg1028<def> = MOV64rr %RSP
68	%reg1029<def> = MOV64rr %reg1028<kill>
76	%reg1029<def> = SUB64rr %reg1029, %reg1027<kill>, %EFLAGS<imp-def,dead>
84	%RSP<def> = MOV64rr %reg1029

This helps greatly when debugging register allocation and coalescing
problems.

llvm-svn: 76615
 2009-07-21 18:56:32 +00:00
Chris Lattner
3d4ab7a231 make AsmPrinter::doFinalization iterate over the global variables 
and call PrintGlobalVariable, allowing elimination and simplification
of various targets.

llvm-svn: 76604
 2009-07-21 18:38:57 +00:00
David Greene
979d7aa03a Add PrefixPrinter arguments to the dump routines for MachineFunction and 
MachineBasicBlock.  We'll use these shortly.

llvm-svn: 76603
 2009-07-21 18:27:05 +00:00
Owen Anderson
7f61f8dc30 Rename getConstantInt{True|False} to get{True|False} at Chris' behest. 
llvm-svn: 76598
 2009-07-21 18:03:38 +00:00
Chris Lattner
0f65fbf095 Rename LessPrivateGlobalPrefix -> LinkerPrivateGlobalPrefix to match the 
LLVM IR concept.

llvm-svn: 76590
 2009-07-21 17:30:51 +00:00
Evan Cheng
c142755cec Another rewriter bug exposed by recent coalescer changes. ReuseInfo::GetRegForReload() should make sure the "switched" register is in the desired register class. I'm surprised this hasn't caused more failures in the past. 
llvm-svn: 76558
 2009-07-21 09:15:00 +00:00
Daniel Dunbar
a0a76c174b Simplify / normalize some uses of Value::getName. 
llvm-svn: 76553
 2009-07-21 08:54:24 +00:00
Bruno Cardoso Lopes
2015382398 Support adding relocations for data sections, handling the cases where 
global declared symbols are initialized with references from other global
symbols.

llvm-svn: 76540
 2009-07-21 06:51:32 +00:00
Evan Cheng
0cf19155ef Fix a dagga combiner bug: avoid creating illegal constant. 
Is this really a winning transformation?
fold (shl (srl x, c1), c2) -> (shl (and x, (shl -1, c1)), (sub c2, c1)) or                                                                              
                              (srl (and x, (shl -1, c1)), (sub c1, c2))

llvm-svn: 76535
 2009-07-21 05:40:15 +00:00
Owen Anderson
b64eef73cf Move a bit more state over to the LLVMContext. 
llvm-svn: 76533
 2009-07-21 02:47:59 +00:00
Evan Cheng
443ae1d494 Cross RC coalescing is now on by default. 
llvm-svn: 76519
 2009-07-21 00:22:59 +00:00
Dale Johannesen
04c5ef4742 Move stripping of bitcasts in inline asm arguments 
to a place where it affects everything.  Occurs
only on calls AFAIK.

llvm-svn: 76502
 2009-07-20 23:27:39 +00:00
Bill Wendling
ca94e95735 Simplify the code in DarwinTargetAsmInfo::emitUsedDirectiveFor so that humans can understand it. 
llvm-svn: 76480
 2009-07-20 21:38:26 +00:00
Bill Wendling
16a69eeaeb Pass in the unfortunately named "LessPrivatePrefix" for the 
"LinkerPrivatePrefix". It seems to have been used in only one place before I
started this "linker_private" business. I'm thinking that a rename is in
order...

llvm-svn: 76479
 2009-07-20 21:30:28 +00:00
Evan Cheng
2bac9b0d83 Use TII->findCommutedOpIndices to find the commute operands (rather than guessing). 
llvm-svn: 76472
 2009-07-20 21:16:08 +00:00
Evan Cheng
0048e876c3 Fix some sub-reg coalescing bugs where the coalescer wasn't updating the resulting interval's register class. 
llvm-svn: 76458
 2009-07-20 19:47:55 +00:00
Bruno Cardoso Lopes
b47b093de2 For PC relative relocations where symbols are defined in the same section they 
are referenced, ignore the relocation entry and patch the relocatable field with
the computed symbol offset directly

llvm-svn: 76414
 2009-07-20 08:52:02 +00:00
Chris Lattner
eac40b1473 implement a new magic global "llvm.compiler.used" which is like llvm.used, but 
doesn't cause ".no_dead_strip" to be emitted on darwin.

llvm-svn: 76399
 2009-07-20 06:14:25 +00:00
Chris Lattner
cbd8366755 use stripPointerCasts to simplify some code. 
llvm-svn: 76397
 2009-07-20 06:05:50 +00:00
Bill Wendling
1a10a060cb Add plumbing for the `linker_private' linkage type. This type is meant for 
"private" symbols which the assember shouldn't strip, but which the linker may
remove after evaluation. This is mostly useful for Objective-C metadata.

This is plumbing, so we don't have a use of it yet. More to come, etc.

llvm-svn: 76385
 2009-07-20 01:03:30 +00:00
Jakob Stoklund Olesen
96f9a917c8 Fix http://llvm.org/bugs/show_bug.cgi?id=4583 
Inline asm instructions may have additional <imp-def,kill> register operands.
These operands are not marked with a flag like the normal asm operands, so we
must not assert that there is a flag.

llvm-svn: 76373
 2009-07-19 19:09:59 +00:00
Daniel Dunbar
8be4e61a2d Fix some minor MSVC compiler warnings. 
llvm-svn: 76356
 2009-07-19 01:38:38 +00:00
Bruno Cardoso Lopes
84568ea6f1 Use R_X86_64_32S to handle Jump Table Index relocation entries. Hide TAI usage inside getSection* functions 
llvm-svn: 76347
 2009-07-18 23:24:01 +00:00
Bruno Cardoso Lopes
fc0fe7ea20 Use a better name for the label relocations while emitting them for Jump Tables 
llvm-svn: 76334
 2009-07-18 20:52:11 +00:00
Bruno Cardoso Lopes
d5eafae1fd Add support to properly reference private symbols on relocation entries. 
Use proper relocation type to build relocations for JumpTables (rodata
sections).

llvm-svn: 76326
 2009-07-18 19:30:09 +00:00
Evan Cheng
a19ee1bb42 Catch more coalescing opportunities. 
llvm-svn: 76282
 2009-07-18 04:52:23 +00:00
Evan Cheng
84f06f0ee6 Enable cross register class coalescing. 
llvm-svn: 76281
 2009-07-18 02:10:10 +00:00
Evan Cheng
92fc255bb4 Fix pr4552. Stack slot coloring with register must take care not to generate illegal ams. 
llvm-svn: 76258
 2009-07-17 22:42:51 +00:00
Chris Lattner
7cf9653432 remove AsmPrinter::findGlobalValue, just use Value::stripPointerCasts instead. 
llvm-svn: 76246
 2009-07-17 22:00:23 +00:00
Evan Cheng
51593b91d9 Simplify some more. 
llvm-svn: 76239
 2009-07-17 21:06:58 +00:00
Chris Lattner
e824b863e5 Use more terse and precise linkage checks. 
llvm-svn: 76237
 2009-07-17 21:00:50 +00:00
Dan Gohman
16335bfc09 Eliminate yet another copy of getOpcode. 
llvm-svn: 76236
 2009-07-17 20:58:59 +00:00
Chris Lattner
b6cede976e these two pieces of code are the same because we always 
emit the EHFrame label next to the section_eh_frame and
eh_frame_common labels.

llvm-svn: 76234
 2009-07-17 20:53:51 +00:00