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Author SHA1 Message Date
Chris Lattner
298414ec18 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76705 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:28:43 +00:00
Evan Cheng
fc6ad402fb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76703 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:25:27 +00:00
Owen Anderson
e922c02019 Get rid of the Pass+Context magic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:24:57 +00:00
Chris Lattner
7cf12c7efd 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76700 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:05:44 +00:00
Lang Hames
fae02a2ab1 Exposed PHIElimination pass within CodeGen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76688 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 23:47:33 +00:00
David Greene
80607c9b2b 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76680 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 23:36:14 +00:00
Chris Lattner
354c0165e7 no really, I can spell! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76679 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 23:36:01 +00:00
Chris Lattner
cb45963643 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76678 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 23:34:23 +00:00
Bruno Cardoso Lopes
82a70ccb24 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76672 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 23:13:26 +00:00
Chris Lattner
3380d5c4aa revert r76602, 76603, and r76615, pending design discussions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76646 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 21:12:58 +00:00
Eli Friedman
b3e7171926 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.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76633 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 20:12:16 +00:00
David Greene
a358c1db5c 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76615 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 18:56:32 +00:00
Chris Lattner
40bbebde9d make AsmPrinter::doFinalization iterate over the global variables 
and call PrintGlobalVariable, allowing elimination and simplification
of various targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76604 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 18:38:57 +00:00
David Greene
4b938958bc Add PrefixPrinter arguments to the dump routines for MachineFunction and 
MachineBasicBlock.  We'll use these shortly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76603 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 18:27:05 +00:00
Owen Anderson
b3056faa55 Rename getConstantInt{True|False} to get{True|False} at Chris' behest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76598 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 18:03:38 +00:00
Chris Lattner
90f8b7073d Rename LessPrivateGlobalPrefix -> LinkerPrivateGlobalPrefix to match the 
LLVM IR concept.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76590 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 17:30:51 +00:00
Evan Cheng
5d885023fe 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76558 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 09:15:00 +00:00
Daniel Dunbar
fbee579ed4 Simplify / normalize some uses of Value::getName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76553 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 08:54:24 +00:00
Bruno Cardoso Lopes
68491c1217 Support adding relocations for data sections, handling the cases where 
global declared symbols are initialized with references from other global
symbols.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76540 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 06:51:32 +00:00
Evan Cheng
d101a72d79 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))


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76535 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 05:40:15 +00:00
Owen Anderson
f53c371983 Move a bit more state over to the LLVMContext. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76533 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 02:47:59 +00:00
Evan Cheng
c95be59371 Cross RC coalescing is now on by default. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76519 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-21 00:22:59 +00:00
Dale Johannesen
5339c551b5 Move stripping of bitcasts in inline asm arguments 
to a place where it affects everything.  Occurs
only on calls AFAIK.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76502 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 23:27:39 +00:00
Bill Wendling
ecc2da8efd Simplify the code in DarwinTargetAsmInfo::emitUsedDirectiveFor so that humans can understand it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76480 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 21:38:26 +00:00
Bill Wendling
4cef584860 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...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76479 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 21:30:28 +00:00
Evan Cheng
33d0474bf5 Use TII->findCommutedOpIndices to find the commute operands (rather than guessing). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76472 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 21:16:08 +00:00
Evan Cheng
753480ad20 Fix some sub-reg coalescing bugs where the coalescer wasn't updating the resulting interval's register class. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76458 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 19:47:55 +00:00
Bruno Cardoso Lopes
0a38dc5fda 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76414 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 08:52:02 +00:00
Chris Lattner
401e10c4fb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76399 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 06:14:25 +00:00
Chris Lattner
1d5c49327b use stripPointerCasts to simplify some code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76397 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 06:05:50 +00:00
Bill Wendling
3d10a5a757 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76385 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-20 01:03:30 +00:00
Jakob Stoklund Olesen
45d34fe358 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76373 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-19 19:09:59 +00:00
Daniel Dunbar
cfb8a1bea1 Fix some minor MSVC compiler warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76356 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-19 01:38:38 +00:00
Bruno Cardoso Lopes
e2b0ecd8be Use R_X86_64_32S to handle Jump Table Index relocation entries. Hide TAI usage inside getSection* functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76347 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-18 23:24:01 +00:00
Bruno Cardoso Lopes
617dd7baa6 Use a better name for the label relocations while emitting them for Jump Tables 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76334 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-18 20:52:11 +00:00
Bruno Cardoso Lopes
171375f73a Add support to properly reference private symbols on relocation entries. 
Use proper relocation type to build relocations for JumpTables (rodata
sections).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76326 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-18 19:30:09 +00:00
Evan Cheng
438d9900c0 Catch more coalescing opportunities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76282 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-18 04:52:23 +00:00
Evan Cheng
5248468473 Enable cross register class coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76281 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-18 02:10:10 +00:00
Evan Cheng
59959cd966 Fix pr4552. Stack slot coloring with register must take care not to generate illegal ams. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76258 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 22:42:51 +00:00
Chris Lattner
16fe990e56 remove AsmPrinter::findGlobalValue, just use Value::stripPointerCasts instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76246 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 22:00:23 +00:00
Evan Cheng
0768f0eb7f Simplify some more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76239 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 21:06:58 +00:00
Chris Lattner
3e0f60be46 Use more terse and precise linkage checks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76237 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 21:00:50 +00:00
Dan Gohman
8906f95006 Eliminate yet another copy of getOpcode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76236 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 20:58:59 +00:00
Chris Lattner
a4ff5e48fc 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76234 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 20:53:51 +00:00
Chris Lattner
e2cf37b88c Untangle a snarl that I discovered when updating the mangler, 
starting in getCurrentFunctionEHName.  Among other problems,
we would try to privative a "foo.eh" label, but end up emitting
the label as _Lfoo.eh instead of L_foo.eh on darwin.  This is really
bad, and the linker has always tolerated these labels existing.
For now, just emit them as _foo.eh.

This patch also fixes problems with ".eh" labels on unnamed
functions and eliminates two strangely defined TargetAsmInfo
hooks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76231 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 20:46:40 +00:00
Chris Lattner
6f37f8f9c3 fix include guard. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76228 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 20:32:07 +00:00
Evan Cheng
d129d73b72 Simplify the coalescer (finally!) by making LiveIntervals::processImplicitDefs a little more aggressive and teaching liveintervals to make use of isUndef marker on MachineOperands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76223 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 19:43:40 +00:00
Anton Korobeynikov
c5ec8a78ea Add support for naked functions 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76198 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 18:07:26 +00:00
Bruno Cardoso Lopes
b674dbe656 revert one of the loops to use indicies over iterators because there are vector insertions inside the loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76195 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 18:02:30 +00:00
Eli Friedman
a64eb92fe3 Make promotion in operation legalization for SETCC work correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76153 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-17 05:16:04 +00:00