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9672 Commits

Author SHA1 Message Date
Dan Gohman
d0c66476e1 Move the code for initialing the entry block livein set out of 
SelectionDAGISel.

llvm-svn: 101258
 2010-04-14 17:05:00 +00:00
Dan Gohman
859cb3eea9 Reorgnaize this code to be more tidy and readable. 
llvm-svn: 101256
 2010-04-14 17:02:07 +00:00
Dan Gohman
a1656764cc Trim #includes. 
llvm-svn: 101255
 2010-04-14 16:54:39 +00:00
Dan Gohman
2c09c272ff Move the code for emitting livein copies out of SelectionDAGISel. 
llvm-svn: 101254
 2010-04-14 16:51:49 +00:00
Dan Gohman
6471bcb1fd Sink landing-pad marking code out of 
SelectionDAGISel::runOnMachineFunction into FunctionLowering.

llvm-svn: 101252
 2010-04-14 16:32:56 +00:00
Dan Gohman
625913100a It's not necessary to recompute EB here. 
llvm-svn: 101251
 2010-04-14 16:30:40 +00:00
Dan Gohman
1158c51fe0 Generalize this code to handle Instructions in addition to ConstantExprs. 
llvm-svn: 101210
 2010-04-14 02:33:23 +00:00
Dan Gohman
f3d8d6ef18 Reorder the methods of this class to be a little more organized. 
llvm-svn: 101206
 2010-04-14 02:09:45 +00:00
Devang Patel
4cc398507f Clear MachineInstr->MCSymbol maps at the end of a function. 
llvm-svn: 101202
 2010-04-14 01:18:28 +00:00
Evan Cheng
aadcfa8ad7 Fast path implicit_def check. 
llvm-svn: 101183
 2010-04-13 22:13:34 +00:00
Devang Patel
7c2bc9dbfe Do not include types without any definition in pubtypes list. 
llvm-svn: 101171
 2010-04-13 20:35:04 +00:00
Evan Cheng
6e5407402e Avoid variable shadowing. 
llvm-svn: 101170
 2010-04-13 20:25:29 +00:00
Evan Cheng
bc94b6f1fd Expand postra machine licm's capability a little more. If an instruction's register operands are all loop invariants, then it's safe to hoist it. 
llvm-svn: 101167
 2010-04-13 20:21:05 +00:00
Jakob Stoklund Olesen
a75eedea38 Teach MachineSinking to handle easy critical edges. 
Sometimes it is desirable to sink instructions along a critical edge:

x = ...
if (a && b) ...
else use(x);

The 'a && b' condition creates a critical edge to the else block, but we still
want to sink the computation of x into the block. The else block is dominated by
the parent block, so we are not pushing instructions into new code paths.

llvm-svn: 101165
 2010-04-13 19:06:14 +00:00
Evan Cheng
d83c1b5a0e Teach postra machine licm to hoist more obvious invariants, e.g. instructions with no source operands. 
llvm-svn: 101154
 2010-04-13 18:16:00 +00:00
Dan Gohman
a400b6eca8 Add a few comments. 
llvm-svn: 101148
 2010-04-13 17:07:06 +00:00
Dan Gohman
2bca857d78 Eliminate MachineBasicBlock::const_livein_iterator and make 
MachineBasicBlock::livein_iterator a const_iterator, because
clients shouldn't ever be using the iterator interface to
mutate the livein set.

llvm-svn: 101147
 2010-04-13 16:57:55 +00:00
Dan Gohman
80b52785a4 Rename MachineFrameInfo variables to MFI, for consistency with 
the rest of CodeGen.

llvm-svn: 101146
 2010-04-13 16:56:45 +00:00
Dan Gohman
22f72726f3 Move MachineRegisterInfo's isLiveIn and isLiveOut out of line. 
llvm-svn: 101145
 2010-04-13 16:55:37 +00:00
Dan Gohman
9652ec03e5 Delete an unused member variable. 
llvm-svn: 101143
 2010-04-13 16:51:39 +00:00
Chris Lattner
dabcd9738c add llvm codegen support for -ffunction-sections and -fdata-sections, 
patch by Sylvere Teissier!

llvm-svn: 101106
 2010-04-13 00:36:43 +00:00
Dan Gohman
3646979c2c Remove a #include. 
llvm-svn: 101043
 2010-04-12 16:26:03 +00:00
Benjamin Kramer
9904b07b61 Plug trivial leak. 
llvm-svn: 101034
 2010-04-12 11:38:35 +00:00
Evan Cheng
90788354c9 Enable post regalloc machine licm by default. 
llvm-svn: 101023
 2010-04-12 06:25:28 +00:00
Dan Gohman
5c9f7ed9aa Remove unnecessary parens. 
llvm-svn: 101010
 2010-04-12 02:24:01 +00:00
Bob Wilson
c340ffd866 Tidy whitespace. 
llvm-svn: 100904
 2010-04-09 21:38:26 +00:00
Devang Patel
55172d3571 Clear InsnsBeginScopeSet and InsnsEndScopeSet at the end of function. 
llvm-svn: 100867
 2010-04-09 16:04:20 +00:00
Dan Gohman
f9cf2772f6 Delete this obsolete comment. 
llvm-svn: 100858
 2010-04-09 14:12:01 +00:00
Chandler Carruth
362be7d46d Add a missing dependency to this library when building with CMake. 
llvm-svn: 100852
 2010-04-09 05:55:25 +00:00
Bob Wilson
1fa38ca6fd Use getNumImplicitDefs() and getNumImplicitUses(). 
llvm-svn: 100850
 2010-04-09 04:46:43 +00:00
Bob Wilson
ed50c79a3a Fix up some comments. 
llvm-svn: 100849
 2010-04-09 04:34:03 +00:00
Dan Gohman
127f5c53e1 Add variants of ult, ule, etc. which take a uint64_t RHS, for convenience. 
llvm-svn: 100824
 2010-04-08 23:03:40 +00:00
Chris Lattner
e154403f78 delete a forwarding function. 
llvm-svn: 100815
 2010-04-08 21:34:17 +00:00
Chris Lattner
1cf4bded13 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
0225dbbfee remove the TargetLoweringObjectFileMachO::getMachoSection 
api and update clients to use MCContext instead.

llvm-svn: 100808
 2010-04-08 20:40:11 +00:00
Chris Lattner
60ff59e5c1 move macho section uniquing from MCParser and TLOF to MCContext where 
the compiler and asmparser now unique to the same sections.  This fixes
rdar://7835021.

llvm-svn: 100807
 2010-04-08 20:30:37 +00:00
Evan Cheng
619f1b8a94 Coalescer should not delete copy instructions whose defs are partially dead. e.g. 
%RDI<def,dead> = MOV64rr %RAX<kill>, %EDI<imp-def>

llvm-svn: 100804
 2010-04-08 20:02:37 +00:00
Ted Kremenek
141d32b7e9 Fix -Wsign-compare warning (issued by clang++). 
llvm-svn: 100799
 2010-04-08 18:49:30 +00:00
Devang Patel
17b5b1dd88 Rename a function. 
llvm-svn: 100797
 2010-04-08 18:43:56 +00:00
Chris Lattner
f6e9c0c4bd implicit defs get added to the end of machine instrs sometimes. Scan the whole instruction for the metadata operand instead of assuming it will be at the end of the instruction. 
llvm-svn: 100792
 2010-04-08 18:20:52 +00:00
Devang Patel
89756fdbfc One instruction may start (or end) multiple lexical scopes. 
There is no need to remember labels identifying regions marked by such instructions in each scope.

llvm-svn: 100781
 2010-04-08 16:50:29 +00:00
Devang Patel
3cc4a24666 Remove dead code. 
llvm-svn: 100771
 2010-04-08 15:48:02 +00:00
Devang Patel
b9f9a00513 Delete out of date comment. 
llvm-svn: 100769
 2010-04-08 15:41:13 +00:00
Devang Patel
9ada7b28a2 Refactor. 
llvm-svn: 100768
 2010-04-08 15:37:09 +00:00
Benjamin Kramer
0fb23008bb Use twines to simplify calls to report_fatal_error. For code size and readability. 
llvm-svn: 100756
 2010-04-08 10:44:28 +00:00
Evan Cheng
3fa0b6fb03 Avoid using f64 to lower memcpy from constant string. It's cheaper to use i32 store of immediates. 
llvm-svn: 100751
 2010-04-08 07:37:57 +00:00
Evan Cheng
2f7cee1730 Make post regalloc machine licm functional. It now passes all of MultiSource. 
llvm-svn: 100742
 2010-04-08 01:03:47 +00:00
Chris Lattner
579e7eb423 convert a report_fatal_error that I was able to trigger into a nice error 
so the user at least knows what inline asm is a problem.  For example:

error: inline asm not supported yet: don't know how to handle tied indirect register inputs
pr8788-1.c:14:10: note: generated from here
    asm ("\n" : "+r" (stack->regs)
         ^

Instead of:
fatal error: error in backend: Don't know how to handle tied indirect register inputs yet!

llvm-svn: 100731
 2010-04-08 00:09:16 +00:00
Chris Lattner
f9fbc74e40 minor tidying. 
llvm-svn: 100725
 2010-04-07 23:50:38 +00:00
Chris Lattner
96ed85d7ab use assertions instead of unreachable for logic errors. 
llvm-svn: 100724
 2010-04-07 23:47:51 +00:00
Chris Lattner
393ea6fc22 introduce a new recoverable error handling API to LLVMContext 
and use it in one place in inline asm handling stuff.  Before
we'd generate this for an invalid modifier letter:

$ clang asm.c -c -o t.o
fatal error: error in backend: Invalid operand found in inline asm: 'abc incl    ${0:Z}'
INLINEASM <es:abc incl    ${0:Z}>, 10, %EAX<def>, 2147483657, %EAX, 14, %EFLAGS<earlyclobber,def,dead>, <!-1>


Now we generate this:

$ clang asm.c -c -o t.o
error: invalid operand in inline asm: 'incl    ${0:Z}'
asm.c:3:12: note: generated from here
  __asm__ ("incl    %Z0" : "+r" (X));
           ^
1 error generated.

This is much better but still admittedly not great ("why" is the operand 
invalid??), codegen should try harder with its diagnostics :)

llvm-svn: 100723
 2010-04-07 23:40:44 +00:00
Chris Lattner
80b41881bc rename llvm::llvm_report_error -> llvm::report_fatal_error 
llvm-svn: 100709
 2010-04-07 22:58:41 +00:00
Chris Lattner
0768c834fe remove some unneeded errorhandling stuff. 
llvm-svn: 100703
 2010-04-07 22:44:07 +00:00
Chris Lattner
cc827ee016 tidy up 
llvm-svn: 100700
 2010-04-07 22:29:10 +00:00
Anton Korobeynikov
e5c1563130 Remove late ARM codegen optimization pass committed by accident. 
It is not ready for public yet.

llvm-svn: 100673
 2010-04-07 18:23:27 +00:00
Anton Korobeynikov
f93145e685 Initial support for different kinds of FU reservation. 
llvm-svn: 100645
 2010-04-07 18:19:32 +00:00
Anton Korobeynikov
bf7bbe3e94 Factor out scoreboard into separate class. This way we might have several different score boards. 
llvm-svn: 100644
 2010-04-07 18:19:24 +00:00
Anton Korobeynikov
d873a16430 Add hook to insert late LLVM=>LLVM passes just before isel 
llvm-svn: 100640
 2010-04-07 18:18:42 +00:00
Chris Lattner
f520500a06 fix 80 col violation, patch by Alastair Lynn 
llvm-svn: 100639
 2010-04-07 18:13:33 +00:00
Chris Lattner
7816ae8fd0 add a comment line that got dropped 
llvm-svn: 100638
 2010-04-07 18:10:38 +00:00
Chris Lattner
60e5f55565 fix a latent bug my inline asm stuff exposed: 
MachineOperand::isIdenticalTo wasn't handling metadata operands.

llvm-svn: 100636
 2010-04-07 18:03:19 +00:00
Benjamin Kramer
389c863692 Remove unused method. 
llvm-svn: 100620
 2010-04-07 11:23:46 +00:00
Torok Edwin
9028487b8b 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
Bill Wendling
8282504a14 Use the "NamedGroupTimer" class to categorize DWARF emission better. 
llvm-svn: 100616
 2010-04-07 09:28:04 +00:00
Benjamin Kramer
663f265996 Use raw_ostream. 
llvm-svn: 100615
 2010-04-07 09:26:51 +00:00
Evan Cheng
0f71b51991 Add comments for missed opportunities. 
llvm-svn: 100610
 2010-04-07 06:00:33 +00:00
Evan Cheng
eb32efa3b6 Fix typo. 
llvm-svn: 100609
 2010-04-07 05:59:12 +00:00
Chris Lattner
122572e13a Have the inst emitter add the !srcloc mdnode to the machine instr. 
Have the asmprinter use the mdnode to scavenge a source location if
present.  Document this nonsense in langref.

llvm-svn: 100607
 2010-04-07 05:38:05 +00:00
Chris Lattner
2bf164dbf2 remove another magic number. 
llvm-svn: 100606
 2010-04-07 05:27:36 +00:00
Chris Lattner
dde7376e9d Three changes: 
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

llvm-svn: 100605
 2010-04-07 05:20:54 +00:00
Dale Johannesen
c0f9c29448 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
Evan Cheng
ac90d47ea3 Post regalloc LICM. Work in progress. 
llvm-svn: 100592
 2010-04-07 00:41:17 +00:00
Devang Patel
bcab88162a Do not emit specification DIE with DW_AT_specification attribute for member functions of a funcation local class. This trips gdb's partial scan of DIEs at load time. Fixes Radar 7833483. 
llvm-svn: 100586
 2010-04-06 23:53:48 +00:00
John McCall
e20cc3b28c Fix a number of clang -Wsign-compare warnings that didn't have an obvious 
solution.  The only reason these don't fire with gcc-4.2 is that gcc turns off
part of -Wsign-compare in C++ on accident.

llvm-svn: 100581
 2010-04-06 23:35:53 +00:00
Dale Johannesen
2a51b8abe5 Revert 100573, it's causing some testsuite problems. 
llvm-svn: 100578
 2010-04-06 22:45:26 +00:00
Dale Johannesen
fefeacda3b 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
Dale Johannesen
fef6eb4076 Allow for the possibility that a debug-value points 
to a SDNode that didn't have code generated for it.

llvm-svn: 100566
 2010-04-06 21:59:56 +00:00
Stuart Hastings
4f6cdc07e9 Reverting 100530 & 100531 due to regressions in the GDB test suite. 
llvm-svn: 100563
 2010-04-06 21:38:29 +00:00
Evan Cheng
99617bac24 Code clean up. Move includes from VirtRegRewriter.h to VirtRegRewriter.cpp. 
llvm-svn: 100532
 2010-04-06 17:19:55 +00:00
Stuart Hastings
749cf45929 Revise debug info machinery to digest nested functions and classes. 
A certain GDB testsuite case (local.cc) has a function nested inside a
class nested inside another function.  GCC presents the innermost
function to llvm-convert first.  Heretofore, the debug info mistakenly
placed the inner function at module scope.  This patch walks the GCC
context links and instantiates the outer class and function so the
debug info is properly nested.  Radar 7426545.

llvm-svn: 100530
 2010-04-06 17:19:32 +00:00
Mon P Wang
c0da8af5c3 Remove assert to treat memmove and memset like memcpy 
llvm-svn: 100521
 2010-04-06 08:27:51 +00:00
Chris Lattner
960095d2c8 propagate cookie management out one layer of function calls. 
llvm-svn: 100510
 2010-04-06 00:58:50 +00:00
Chris Lattner
344a742ed1 report errors through LLVMContext's inline asm handler if available. 
llvm-svn: 100509
 2010-04-06 00:55:39 +00:00
Chris Lattner
8c1f45d90b Give MachineModuleInfo an actual Module*. 
llvm-svn: 100508
 2010-04-06 00:51:52 +00:00
Devang Patel
5e0cb53223 Remove unnecessary include. 
llvm-svn: 100505
 2010-04-06 00:38:32 +00:00
Evan Cheng
c6dc63d62c Fix an obvious copy-n-paste bug. It's not known to cause any miscompilation. 
llvm-svn: 100494
 2010-04-05 23:33:29 +00:00
Chris Lattner
f753452587 Give AsmParser an option to control whether it finalizes 
the stream.  New demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000	subq	$0x08,%rsp
0000000000000004	movl	%edi,(%rsp)
0000000000000007	movl	%edi,%eax
0000000000000009	incl	%eax
000000000000000b	movl	%eax,(%rsp)
000000000000000e	movl	%eax,0x04(%rsp)
0000000000000012	addq	$0x08,%rsp
0000000000000016	ret

llvm-svn: 100492
 2010-04-05 23:15:42 +00:00
Chris Lattner
5b4c7591ac add .o file writing for inline asm in llc. Here's a silly 
demo:

$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
<inline asm>:1:2: error: unrecognized instruction
	abc incl    %eax
	^
LLVM ERROR: Error parsing inline asm

Only problem seems to be that the parser finalizes OutStreamer 
at the end of the first inline asm, which isn't what we want.
For example:

$ cat asm.c
int foo(int X) {
 __asm__ ("incl    %0" : "+r" (X));
 return X;
}
$ clang asm.c -S -o - -emit-llvm | llc
...
	subq	$8, %rsp
	movl	%edi, (%rsp)
	movl	%edi, %eax
	## InlineAsm Start
	incl    %eax
	## InlineAsm End
	movl	%eax, (%rsp)
	movl	%eax, 4(%rsp)
	addq	$8, %rsp
	ret
$ clang asm.c -S -o - -emit-llvm | llc -filetype=obj -o t.o
$ otool -tv t.o
t.o:
(__TEXT,__text) section
_foo:
0000000000000000	subq	$0x08,%rsp
0000000000000004	movl	%edi,(%rsp)
0000000000000007	movl	%edi,%eax
0000000000000009	incl	%eax
$ 

don't stop at inc!

llvm-svn: 100491
 2010-04-05 23:11:24 +00:00
Bill Wendling
bf50ddf6ac Output floating point representations in DWARF format. This is done by outputing 
the FP encoding directly as a hex representation.

llvm-svn: 100487
 2010-04-05 22:59:21 +00:00
Chris Lattner
269737461d stringref-ize the MemoryBuffer::get apis. This requires 
a co-committed clang patch.

llvm-svn: 100485
 2010-04-05 22:42:30 +00:00
Dan Gohman
302746a632 Add a comment. 
llvm-svn: 100459
 2010-04-05 20:24:08 +00:00
Chris Lattner
7d609ea6cb lowering a volatile llvm.memcpy to a libc memcpy is ok. 
PR6779

llvm-svn: 100457
 2010-04-05 20:11:45 +00:00
Dan Gohman
2aff0055c1 Don't do code sinking on unreachable blocks. It's unprofitable and hazardous. 
llvm-svn: 100455
 2010-04-05 19:17:22 +00:00
Chris Lattner
aa58ed7c00 remove the now-redundant MMI pointer in SelectionDAG. 
llvm-svn: 100419
 2010-04-05 06:19:28 +00:00
Chris Lattner
91309715b4 hopefully sate the clang self host build, which is apparently 
instantiating some folding set stuff that GCC isn't, requiring 
some types to not be incomplete.

I don't know if clang is right or wrong, but unbreaking the
bot is goodness.  Here's the broken build:
http://google1.osuosl.org:8011/builders/clang-x86_64-darwin10-selfhost/builds/1813/steps/compile.llvm.stage2/logs/stdio

llvm-svn: 100418
 2010-04-05 06:12:01 +00:00
Chris Lattner
097a332684 remove some redundant MMI arguments. 
llvm-svn: 100417
 2010-04-05 06:10:13 +00:00
Chris Lattner
6f3c3f60ce unthread MMI from FastISel 
llvm-svn: 100416
 2010-04-05 06:05:26 +00:00
Chris Lattner
cfca39ef59 remove the MMI pointer from MachineFrameInfo. 
llvm-svn: 100415
 2010-04-05 05:57:52 +00:00
Chris Lattner
811d538611 enhance MachineFunction to have a MMI pointer. 
llvm-svn: 100414
 2010-04-05 05:49:50 +00:00
Chris Lattner
341747c032 privatize more stuff, eliminate vtables. 
llvm-svn: 100410
 2010-04-05 05:32:45 +00:00
Chris Lattner
5d96bd2bbe reprivatize now that DwarfWriter is gone. 
llvm-svn: 100409
 2010-04-05 05:31:04 +00:00
Chris Lattner
59156acba1 prune #includes, MMI can never be null 
llvm-svn: 100408
 2010-04-05 05:28:23 +00:00
Chris Lattner
f2fb401571 prune #includes, realize the MMI can never be null. 
llvm-svn: 100407
 2010-04-05 05:24:55 +00:00
Chris Lattner
37d4f1e56e finally blast DwarfWriter away. 
llvm-svn: 100406
 2010-04-05 05:12:59 +00:00
Chris Lattner
df6b0827aa 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
248e65ec05 trim some spurious references to DwarfWriter. SDIsel really doesn't 
need it anymore, so don't addRequire it.

llvm-svn: 100400
 2010-04-05 04:09:20 +00:00
Chris Lattner
16ed3bfb2b eliminate DwarfDebug::shouldEmit, which is the same now as MMI::hasDebugInfo 
llvm-svn: 100386
 2010-04-05 03:52:55 +00:00
Chris Lattner
697c2edddc fix a regression on 2009-08-17-DebugInfo.m 
llvm-svn: 100385
 2010-04-05 03:49:26 +00:00
Chris Lattner
c930f73b4d selection dag doesn't need DwarfWriter, remove some tendrils. 
llvm-svn: 100382
 2010-04-05 02:23:33 +00:00
Chris Lattner
1fda8b3a8b fastisel doesn't need DwarfWriter, remove some tendricles. 
llvm-svn: 100381
 2010-04-05 02:19:28 +00:00
Chris Lattner
6040137045 just have all targets create the DwarfWriter. 
llvm-svn: 100377
 2010-04-05 00:42:55 +00:00
Chris Lattner
fd80e7cca8 nuke DwarfPrinter 
llvm-svn: 100375
 2010-04-05 00:27:29 +00:00
Chris Lattner
122288eb97 make DwarfException not inherit from DwarfPrinter. 
llvm-svn: 100374
 2010-04-05 00:26:50 +00:00
Chris Lattner
c1b63a2dfa change SizeOf to take AsmPrinter instead of TargetData, 
simplifying a bunch of code.

llvm-svn: 100373
 2010-04-05 00:18:22 +00:00
Chris Lattner
2b89b0d279 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
0744c47856 Move EmitFrameMoves into AsmPrinter. 
llvm-svn: 100371
 2010-04-04 23:41:46 +00:00
Chris Lattner
303e9e2e0a simplify code and reduce indentation. 
llvm-svn: 100369
 2010-04-04 23:31:58 +00:00
Chris Lattner
2eaed62f7c now that the magic is dispelled, move EmitSectionOffset to AsmPrinter. 
llvm-svn: 100368
 2010-04-04 23:25:33 +00:00
Chris Lattner
ecdad4bb0c eliminate the magic AbsoluteDebugSectionOffsets MAI hook, 
which is really a property of the section being referenced.
Add a predicate to MCSection to replace it.

Yay for reduction in magic.

llvm-svn: 100367
 2010-04-04 23:22:29 +00:00
Chris Lattner
957eddbcb0 only emit section labels if we have debug info, fixing a few 
regtest failures.

llvm-svn: 100366
 2010-04-04 23:17:54 +00:00
Chris Lattner
7295a273aa I was wrong, ocaml isn't referencing 'Ldata_begin', so remove it. 
llvm-svn: 100365
 2010-04-04 23:10:38 +00:00
Chris Lattner
4bd354ecd8 add some assertions to EmitSectionOffset. 
llvm-svn: 100364
 2010-04-04 23:06:31 +00:00
Chris Lattner
a991a67a29 stop emitting some dead L labels. 
llvm-svn: 100363
 2010-04-04 23:02:02 +00:00
Chris Lattner
265b59119d Store an use the symbols emitted at the start of the debug 
sections instead of magically rematerializing them later.

llvm-svn: 100362
 2010-04-04 22:59:04 +00:00
Chris Lattner
53453a2dc8 remove the didInitial ivar, rename emitInitial to be more 
descriptive, change EmitSectionOffset back to taking a
symbol instead of a string.

llvm-svn: 100361
 2010-04-04 22:33:59 +00:00
Chris Lattner
df18fb3a6d simplify EmitSectionOffset a little bit, improve comments. 
llvm-svn: 100360
 2010-04-04 22:25:14 +00:00
Chris Lattner
168d49e6cd The "IsSmall" argument to EmitSectionOffset is always true, 
constant fold it away.

llvm-svn: 100356
 2010-04-04 21:34:40 +00:00
Chris Lattner
da4fe3e7d2 eliminate the "isEH" argument to EmitSectionOffset. 
llvm-svn: 100355
 2010-04-04 21:31:54 +00:00
Chris Lattner
2f1c065cef isAbsoluteEHSectionOffsets always returns false, eliminate it 
and substitute false at the one call site.

llvm-svn: 100354
 2010-04-04 21:29:44 +00:00
Chris Lattner
c83be77854 move some more stuff to asmprinter. 
llvm-svn: 100351
 2010-04-04 20:20:50 +00:00
Chris Lattner
7214d4d564 simplify some code. 
llvm-svn: 100350
 2010-04-04 20:10:41 +00:00
Chris Lattner
703ccb1b4c move EmitEncodingByte to AsmPrinter. 
llvm-svn: 100349
 2010-04-04 20:04:21 +00:00
Chris Lattner
071eb40cd2 move EmitCFAByte to AsmPrinter. 
llvm-svn: 100348
 2010-04-04 20:01:25 +00:00
Chris Lattner
24ed58efd1 inline EmitDifference away. 
llvm-svn: 100347
 2010-04-04 19:58:12 +00:00
Chris Lattner
779e051357 resolve a fixme. 
llvm-svn: 100346
 2010-04-04 19:28:59 +00:00
Chris Lattner
c2b0a02be0 move gettemplabel and getdwlabel to AsmPrinter and rename 
them for consistency.

llvm-svn: 100345
 2010-04-04 19:25:43 +00:00
Chris Lattner
342b44f89f move uleb/sleb printing into AsmPrinter from DwarfPrinter. 
llvm-svn: 100344
 2010-04-04 19:09:29 +00:00
Chris Lattner
3bdfd5a34d more interface cleanup make some helpers static functions. 
llvm-svn: 100343
 2010-04-04 18:58:53 +00:00
Chris Lattner
328ffc8c32 clean up the asmprinter header and privatize some stuff. 
llvm-svn: 100342
 2010-04-04 18:52:31 +00:00
Chris Lattner
dd1f2b6e33 use stringref instead of strtol to avoid errno gymnastics. 
llvm-svn: 100341
 2010-04-04 18:42:18 +00:00
Chris Lattner
d7a37abb77 split inline asm support out to its own .cpp file. 
llvm-svn: 100340
 2010-04-04 18:34:07 +00:00
Chris Lattner
e55c5e9d81 inline processDebugLoc and simplify it. 
llvm-svn: 100339
 2010-04-04 18:18:51 +00:00
Chris Lattner
a5c6be681c minor tidying. 
llvm-svn: 100338
 2010-04-04 18:16:38 +00:00
Chris Lattner
0d3490e0b0 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
cb654f3113 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
71a1b87241 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
3eaaa7bb6c 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
b0eb3e8e49 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
1917725796 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
6142bb4162 mcize the gc metadata printing stuff. 
llvm-svn: 100324
 2010-04-04 07:39:04 +00:00
Chris Lattner
da368251bf use EmitRawText instead of O in DwarfPrinter. 
llvm-svn: 100323
 2010-04-04 07:25:52 +00:00
Chris Lattner
00699c02d5 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
f56580493f change this back too 
llvm-svn: 100310
 2010-04-04 05:09:10 +00:00
Chris Lattner
d37e89c481 check in what I tested. :( 
llvm-svn: 100309
 2010-04-04 05:08:10 +00:00
Chris Lattner
d3805cbfe6 MMI is always available, rename O -> OS in printInlineAsm. 
llvm-svn: 100308
 2010-04-04 05:07:45 +00:00
Chris Lattner
8fb6be1886 fix an ugly wart in the MCInstPrinter api where the 
raw_ostream to print an instruction to had to be specified
at MCInstPrinter construction time instead of being able
to pick at each call to printInstruction.

llvm-svn: 100307
 2010-04-04 05:04:31 +00:00
Chris Lattner
cdbca3e8fe 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
Mon P Wang
484bbe6aa9 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100304
 2010-04-04 03:10:48 +00:00
Chris Lattner
fde2b21277 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
e952450d5a emit the cygwin stub thing through mcstreamer. 
llvm-svn: 100295
 2010-04-03 22:19:41 +00:00
Chris Lattner
b6769a8513 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
940911edf1 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
4e8e791414 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
512e2aa3d2 mc'ize comment printing around file scope inline asm. 
llvm-svn: 100288
 2010-04-03 21:13:18 +00:00
David Greene
7c81589636 Ok, third time's the charm. No changes from last time except the CMake 
source addition.  Apparently the buildbots were wrong about failures.

---

Add some switches helpful for debugging:

-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.

llvm-svn: 100249
 2010-04-02 23:17:14 +00:00
Dale Johannesen
86b4078f90 Skip debug info when looking for existing EH calls at the 
beginning of a block.

llvm-svn: 100230
 2010-04-02 21:49:27 +00:00
Benjamin Kramer
88e421e531 Fix anachronism. 
llvm-svn: 100225
 2010-04-02 20:47:05 +00:00
Chris Lattner
9da2b8a955 fix the llvm-x86_64-linux buildbot. 
llvm-svn: 100223
 2010-04-02 20:36:25 +00:00
Chris Lattner
c7be637524 remove empty file. 
llvm-svn: 100222
 2010-04-02 20:26:36 +00:00
Chris Lattner
0da97990f6 stop using DebugLoc::getUnknownLoc() 
llvm-svn: 100215
 2010-04-02 20:17:23 +00:00
Chris Lattner
305c84b8ee 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
Evan Cheng
5d825988d0 Correctly lower memset / memcpy of undef. It should be a nop. PR6767. 
llvm-svn: 100208
 2010-04-02 19:36:14 +00:00
Evan Cheng
499918dabf Revert 100204. It broke a bunch of tests and apparently changed what passes are run during codegen. 
llvm-svn: 100207
 2010-04-02 19:29:15 +00:00
Benjamin Kramer
69aee9e31b Update CMake. 
llvm-svn: 100206
 2010-04-02 19:09:51 +00:00
David Greene
554373897c Let's try this again. Re-apply 100143 including an apparent missing 
<string> include.  For some reason the buildbot choked on this while my
builds did not.  It's probably due to a difference in system headers.

---

Add some switches helpful for debugging:

-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.

llvm-svn: 100204
 2010-04-02 18:46:26 +00:00
Mon P Wang
0ccf050ca3 Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang
a01350755e Reapply address space patch after fixing an issue in MemCopyOptimizer. 
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)

llvm-svn: 100191
 2010-04-02 18:04:15 +00:00
Evan Cheng
921fc2c77b After trivial coalescing, the MI being visited may have become a copy. Avoid adding it to CSE hash table since copies aren't being considered for CSE and they may be deleted. 
rdar://7819990

llvm-svn: 100170
 2010-04-02 02:21:24 +00:00
Dale Johannesen
5b35f2ee86 Teach AnalyzeBranch, RemoveBranch and the branch 
folder to be tolerant of debug info following the
branch(es) at the end of a block.

llvm-svn: 100168
 2010-04-02 01:38:09 +00:00
Eric Christopher
77e4cc4bbd Revert r100143. 
llvm-svn: 100146
 2010-04-01 22:54:42 +00:00
Devang Patel
1d51b57a85 Revert r100117. 
llvm-svn: 100145
 2010-04-01 22:47:29 +00:00
David Greene
a358be0ef7 Add some switches helpful for debugging: 
-print-before=<Pass Name>

Dump IR before running pass <Pass Name>.

-print-before-all

Dump IR before running each pass.

-print-after-all

Dump IR after running each pass.

These are helpful when tracking down a miscompilation.  It is easy to
get IR dumps and do diffs on them, etc.

To make this work well, add a new getPrinterPass API to Pass so that
each kind of pass (ModulePass, FunctionPass, etc.) can create a Pass
suitable for dumping out the kind of object the Pass works on.

llvm-svn: 100143
 2010-04-01 22:43:57 +00:00
Devang Patel
97a60f2ce5 Do not eagerly record known previous location. DBG_VALUE may not cause a new label due to one or other reason. 
llvm-svn: 100134
 2010-04-01 20:22:44 +00:00
Evan Cheng
9307af84c2 Skip checking preferred alignment of GVs defined in other translation units all together. 
llvm-svn: 100133
 2010-04-01 20:13:28 +00:00
Evan Cheng
8728924812 - Avoid using floating point stores to implement memset unless the value is zero. 
- Do not try to infer GV alignment unless its type is sized. It's not possible to infer alignment if it has opaque type.

llvm-svn: 100118
 2010-04-01 18:19:11 +00:00
Devang Patel
52c509b85d Skip instructions until new scope is seen. 
llvm-svn: 100117
 2010-04-01 17:32:01 +00:00
Devang Patel
e55fdcf347 Cosmetic changes. 
Update comment, rename a local variable.

llvm-svn: 100116
 2010-04-01 17:16:48 +00:00
Evan Cheng
562bb43207 Fix sdisel memcpy, memset, memmove lowering: 
1. Makes it possible to lower with floating point loads and stores.
2. Avoid unaligned loads / stores unless it's fast.
3. Fix some memcpy lowering logic bug related to when to optimize a
   load from constant string into a constant.
4. Adjust x86 memcpy lowering threshold to make it more sane.
5. Fix x86 target hook so it uses vector and floating point memory
   ops more effectively.
rdar://7774704

llvm-svn: 100090
 2010-04-01 06:04:33 +00:00
Bill Wendling
5aa9aa529b Reapply r100056. It doesn't look like it's the one that's causing a failure. 
llvm-svn: 100065
 2010-04-01 00:00:43 +00:00
Bill Wendling
c463229fea Revert r100056. It was causing a failure on MSVC. 
llvm-svn: 100062
 2010-03-31 23:26:26 +00:00
Stuart Hastings
7c358afa1d Reverting 100048; it broke two Frontend debug info tests. 
llvm-svn: 100058
 2010-03-31 23:08:46 +00:00
Bill Wendling
43ca5bc535 Rewrite CorrectExtraCFGEdges() to make it more understandable. 
* Set the "DestA" and "DestB" according to how they're understood by the
  method. I.e., if one or both of them should point to the "fall through" block,
  then point to the fall through block.

* Improve the loop that removes superfluous edges to be more understandable.

llvm-svn: 100056
 2010-03-31 22:54:38 +00:00
Stuart Hastings
3a9c4bcef8 Debug info can now properly represent functions inside classes inside other functions. Partial fix for Radar 7424645. 
llvm-svn: 100048
 2010-03-31 21:10:54 +00:00
Benjamin Kramer
b67e098ab6 Reduce string trashing. 
llvm-svn: 100038
 2010-03-31 20:15:45 +00:00
Benjamin Kramer
a71501e0dd DwarfDebug: Allocate DIEValues with a BumpPtrAllocator. Most of them are 
POD-like anyway, so we don't even care about calling their d'tors (DIEBlock
being the exception).

~6% less mallocs and ~1% compile time improvement on clang -O0 -g oggenc.c

llvm-svn: 100035
 2010-03-31 19:34:01 +00:00
Chris Lattner
7919973f2d reduce indentation 
llvm-svn: 99999
 2010-03-31 06:09:04 +00:00
Chris Lattner
421f945e1f tidy up 
llvm-svn: 99998
 2010-03-31 06:06:37 +00:00
Chris Lattner
fac22403cb MI != 0 is checked in the assert right above this. 
llvm-svn: 99995
 2010-03-31 05:42:48 +00:00
Chris Lattner
baad3cbf19 use the isDebugValue() predicate and pop_back_val() 
llvm-svn: 99993
 2010-03-31 05:39:57 +00:00
Chris Lattner
9653faca87 assert is a function-like macro, not a control flow operator. 
llvm-svn: 99992
 2010-03-31 05:36:29 +00:00
Chris Lattner
d015147472 reduce indentation, fit in 80 cols and various other cosmetic cleanups. 
llvm-svn: 99989
 2010-03-31 05:15:22 +00:00
Chris Lattner
1d2ea2510d use the optimized debug info apis in sdisel. 
llvm-svn: 99986
 2010-03-31 04:24:50 +00:00
Chris Lattner
27c9cacb63 add new apis for getting/setting !dbg metadata on 
instructions.  In addition to being a convenience,
they are faster than the old apis, particularly when
not going from an MDKindID like people should be
doing.

llvm-svn: 99982
 2010-03-31 03:34:40 +00:00
Bob Wilson
aae933cc81 Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
llvm-svn: 99948
 2010-03-30 22:27:04 +00:00
Devang Patel
2a2b092bf0 Ignore invalid metadata. 
llvm-svn: 99938
 2010-03-30 22:09:52 +00:00
Mon P Wang
9351ea594a Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, 
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928
 2010-03-30 20:55:56 +00:00
Benjamin Kramer
4b94ce229d Introduce SpecificBumpPtrAllocator, a wrapper for BumpPtrAllocator which allows 
only a single type of object to be allocated. Use it to make VNInfo destruction
typesafe.

llvm-svn: 99919
 2010-03-30 20:16:45 +00:00
Chris Lattner
8e4cf6f425 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
Evan Cheng
6286e43067 Funky indentation. 
llvm-svn: 99901
 2010-03-30 18:08:53 +00:00
Devang Patel
a103a31a3c There is no need to fall through after processing DBG_VALUE machine instruction. 
llvm-svn: 99899
 2010-03-30 18:07:00 +00:00
Daniel Dunbar
c457891855 Fix -Asserts warning. 
llvm-svn: 99895
 2010-03-30 17:57:42 +00:00
Torok Edwin
df7c52143e Reapply r99881 with some fixes: only call destructor in releaseMemory! 
llvm-svn: 99883
 2010-03-30 11:17:48 +00:00
Torok Edwin
0994bb75ce Revert 99881, it brooke smooshlab's llvm-gcc-i386-darwin9. 
llvm-svn: 99882
 2010-03-30 10:25:08 +00:00
Torok Edwin
24db267b1e Introduce another Reset() method in BumpPtrAllocator that calls a destructor 
on all objects it has allocated, if they are all of the same size and alignment.
Use this to destruct all VNInfos allocated in LiveIntervalAnalysis (PR6653).

valnos is not reliable for this purpose, as seen in r99400
(which still leaked, and sometimes caused double frees).

llvm-svn: 99881
 2010-03-30 10:08:26 +00:00
Evan Cheng
e195c4f65d Avoid being influenced by the presence of dbg_value instructions. 
llvm-svn: 99879
 2010-03-30 05:49:07 +00:00
Bill Wendling
bec66951a6 Re-add back in the slow way of determining of a clean-up should become a 
catch-all. The "dominates" way won't catch all of the selectors which must be
changed.

llvm-svn: 99850
 2010-03-29 23:37:07 +00:00
Bill Wendling
faacede11f A more general (and simpler!) implementation of r99671. It performs a similar 
transform. I.e., if a clean-up eh.selector call dominates the invoke of an
_Unwind_Resume_or_Rethrow, then we convert the eh.selector into a
catch-all. This patch, however, uses the DominatorTree information, and doesn't
go through the whole rigmarole of starting at the eh.exception call, finding the
corresponding URoR and eh.selector calls, and trying to trace through any number
of instruction types to get to them.

llvm-svn: 99846
 2010-03-29 23:02:46 +00:00
Devang Patel
953a86e2bb Encode start location of debug value, communicated through DBG_VALUE machine instruction, in a variable's DIE. 
llvm-svn: 99845
 2010-03-29 22:59:58 +00:00
Evan Cheng
b1ddb193c7 Fix PR4975. Avoid referencing empty vector. 
llvm-svn: 99840
 2010-03-29 21:27:30 +00:00
Evan Cheng
aafcb722f9 Pool allocate SDDbgValue nodes. 
llvm-svn: 99836
 2010-03-29 20:48:30 +00:00
Chris Lattner
369d564845 use RAII for ExceptionTimer too 
llvm-svn: 99833
 2010-03-29 20:39:38 +00:00
Chris Lattner
b01fcba466 fix a variety of issues were we'd start DebugTimer but 
not stop it by using RAII.

llvm-svn: 99832
 2010-03-29 20:38:20 +00:00
Devang Patel
cfd24dc84c 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
66e9b05428 Revert 99772. 
llvm-svn: 99778
 2010-03-28 21:23:37 +00:00
Chris Lattner
24b8a8bebd add a statistic for the # times isel has to backtrack. 
llvm-svn: 99774
 2010-03-28 19:46:56 +00:00
Devang Patel
bb5063a8cd Refactoring. Push DILocation processing in to DwarfDebug from AsmPrinter. 
llvm-svn: 99772
 2010-03-28 18:57:09 +00:00
Chris Lattner
5ad69fe4b6 finally remove the immAllOnesV_bc/immAllZerosV_bc patterns 
and those derived from them.  These are obnoxious because
they were written as: PatLeaf<(bitconvert).  Not having an
argument was foiling adding better type checking for operand
count matching up with what was required (in this case,
bitconvert always requires an operand!)

llvm-svn: 99759
 2010-03-28 08:43:23 +00:00
Chris Lattner
78dc3c322f comply with the wishes of a fixme. 
llvm-svn: 99742
 2010-03-28 05:55:17 +00:00
Chris Lattner
918dd19018 now that (parallel) is gone and a variety of bugs in targets 
are cleaned up, we can remove an old fixme.

llvm-svn: 99741
 2010-03-28 05:54:03 +00:00
Chris Lattner
3f060e3216 add an optimized form of OPC_EmitMergeInputChains for the 1, 0 and 
1, 1 cases which are by-far the most frequent.  This shrinks the X86
isel table from 77014 -> 74657 bytes.

llvm-svn: 99740
 2010-03-28 05:50:16 +00:00
Chris Lattner
bacf4edba3 don't add nodes to the now-dead nodes list multiple times, this 
can cause a crash on crazy situations in msp430 when morph-node-to
is disabled.

llvm-svn: 99739
 2010-03-28 05:28:31 +00:00
Chris Lattner
bb65543f01 don't add flag nodes with chain results to the NowDeadNodes 
list multiple times when MorphNodeTo can't be applied.

llvm-svn: 99735
 2010-03-28 04:54:33 +00:00
Chris Lattner
85756c913d improve -debug-only=isel comments for cases when we don't enter a 
scope due to obviously false predicate.

llvm-svn: 99723
 2010-03-27 18:54:50 +00:00
Bill Wendling
3f00f8044f Forgot the part where we handle the ".llvm.eh.catch.all.value". 
llvm-svn: 99697
 2010-03-27 01:24:30 +00:00
Bill Wendling
ced10a4468 Return if we changed anything or not. 
llvm-svn: 99695
 2010-03-27 01:22:38 +00:00
Bill Wendling
4b55d4fd59 If a selector has a call to ".llvm.eh.catch.all.value" that we haven't 
converted, then use the initializer, since using the name itself won't work.

llvm-svn: 99692
 2010-03-27 01:19:12 +00:00
Bill Wendling
dc6507730a If we mark clean-ups as clean-ups, then it could break when inlining through an 
'invoke' instruction. You will get a situation like this:

bb:
  %ehptr = eh.exception()
  %sel = eh.selector(%ehptr, @per, 0);

...

bb2:
  invoke _Unwind_Resume_or_Rethrow(%ehptr) %normal unwind to %lpad

lpad:
  ...

The unwinder will see the %sel call as a clean-up and, if it doesn't have a
catch further up the call stack, it will skip running it. But there *is* another
catch up the stack -- the catch for the %lpad. However, we can't see that. This
is fixed in code-gen, where we detect this situation, and convert the "clean-up"
selector call into a "catch-all" selector call. This gives us the correct
semantics.

llvm-svn: 99671
 2010-03-26 23:41:30 +00:00
Anton Korobeynikov
add7caa0f3 Add few missed libcalls and correct names for others. 
llvm-svn: 99656
 2010-03-26 21:32:14 +00:00
Dale Johannesen
5c20ece13a Debug info shouldn't affect kills. 
llvm-svn: 99637
 2010-03-26 19:21:26 +00:00
Evan Cheng
1f419ac4da LiveVariables should clear kill / dead markers first. This allows us to remove a hack in the scheduler. 
llvm-svn: 99597
 2010-03-26 02:12:24 +00:00
Evan Cheng
0b7dd682dd Try trivial remat before the coalescer gives up on a vr / physreg coalescing for fear of tying up a physical register. 
llvm-svn: 99575
 2010-03-26 00:07:25 +00:00
Dale Johannesen
f5c1282ba6 Handle DEBUG_VALUE in this pass. 
llvm-svn: 99573
 2010-03-26 00:02:44 +00:00
Evan Cheng
032f5d7258 Code clean up. 
llvm-svn: 99544
 2010-03-25 19:46:11 +00:00
Chris Lattner
bea905d2e9 fix a valgrind error on copy-constructor-synthesis.cpp, which is caused when 
the custom insertion hook deletes the instruction, then we try to set dead
flags on it.  Neither the code that I added nor the code that was there 
before was safe.

llvm-svn: 99538
 2010-03-25 18:49:10 +00:00
Evan Cheng
ffebd856cb Remove an unused option. 
llvm-svn: 99537
 2010-03-25 18:37:23 +00:00
Devang Patel
5f38bf4c87 Add comment. 
llvm-svn: 99507
 2010-03-25 15:09:44 +00:00
Evan Cheng
8c19404e5c Scheduler assumes SDDbgValue nodes are in source order. That's true currently. But add an assertion to verify it. 
llvm-svn: 99501
 2010-03-25 07:16:57 +00:00
Chris Lattner
13f444cdf1 Change tblgen to emit FOOISD opcode names as two 
bytes instead of one byte.  This is important because
we're running up to too many opcodes to fit in a byte
and it is aggrevated by FIRST_TARGET_MEMORY_OPCODE
making the numbering sparse.  This just bites the
bullet and bloats out the table.  In practice, this
increases the size of the x86 isel table from 74.5K
to 76K.  I think we'll cope :)

This fixes rdar://7791648

llvm-svn: 99494
 2010-03-25 06:33:05 +00:00
Evan Cheng
0ad874a05c Remove a fixme that doesn't make sense any more. 
llvm-svn: 99489
 2010-03-25 06:02:53 +00:00
Evan Cheng
0917f4a575 Make sure SDDbgValue.Invalid is initialized to false by all the constructors. 
llvm-svn: 99487
 2010-03-25 05:50:26 +00:00