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9c88c96b3f
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12428 Commits

Author SHA1 Message Date
Chris Lattner
9c88c96b3f Teach basicaa that x|c == x+c when the c bits of x are clear. This 
allows us to compile the example in readme.txt into:

LBB1_1:                                                     ## %bb
	movl	4(%rdx,%rax), %ecx
	movl	%ecx, %esi
	imull	(%rdx,%rax), %esi
	imull	%esi, %ecx
	movl	%esi, 8(%rdx,%rax)
	imull	%ecx, %esi
	movl	%ecx, 12(%rdx,%rax)
	movl	%esi, 16(%rdx,%rax)
	imull	%ecx, %esi
	movl	%esi, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

instead of:

LBB1_1: 
	movl	(%rdx,%rax), %ecx
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 8(%rdx,%rax)
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 12(%rdx,%rax)
	imull	8(%rdx,%rax), %ecx
	movl	%ecx, 16(%rdx,%rax)
	imull	12(%rdx,%rax), %ecx
	movl	%ecx, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

GCC (4.2) doesn't seem to be able to eliminate the loads in this 
testcase either, it generates:

L2:
	movl	(%rdx), %eax
	imull	4(%rdx), %eax
	movl	%eax, 8(%rdx)
	imull	4(%rdx), %eax
	movl	%eax, 12(%rdx)
	imull	8(%rdx), %eax
	movl	%eax, 16(%rdx)
	imull	12(%rdx), %eax
	movl	%eax, 20(%rdx)
	addl	$4, %ecx
	addq	$16, %rdx
	cmpl	$1002, %ecx
	jne	L2

llvm-svn: 89952
 2009-11-26 16:26:43 +00:00
Chris Lattner
677b93d4c8 teach basicaa that A[i] != A[i+1]. 
llvm-svn: 89951
 2009-11-26 16:18:10 +00:00
Chris Lattner
0b862edca3 update some notes slightly 
llvm-svn: 89913
 2009-11-26 01:51:18 +00:00
Viktor Kutuzov
c0799914a1 Rollback changes r89516: Added two SubtargetFeatures::AddFeatures methods, which accept a comma-separated string or already parsed command line parameters as input, and some code re-factoring to use these new methods. 
llvm-svn: 89893
 2009-11-25 22:44:18 +00:00
Bob Wilson
b1cce5329e Tail duplicate indirect branches for PowerPC, too. 
With the testcase for pr3120, the "threaded interpreter" runtime decreases
from 1788 to 1413 with this change.

llvm-svn: 89877
 2009-11-25 19:57:14 +00:00
Benjamin Kramer
fbac37018a Avoid some possibly unsafe uses of StringRef::data(). 
llvm-svn: 89873
 2009-11-25 18:26:09 +00:00
Devang Patel
d50fc13c19 Use StringRef (again) in DebugInfo interface. 
llvm-svn: 89866
 2009-11-25 17:36:49 +00:00
Bob Wilson
aee7a9e676 Based on the testcase for pr3120, running on my MacPro with Xeon processors, 
it is definitely profitable to tail duplicate indirect branches for x86.
This is likely to be true to various degrees for all modern x86 processors.

llvm-svn: 89865
 2009-11-25 17:27:53 +00:00
Bruno Cardoso Lopes
038281c523 Support PIC loading of constant pool entries 
llvm-svn: 89863
 2009-11-25 12:17:58 +00:00
Daniel Dunbar
ffe6484b7c Sketch structure for X86 disassembler. 
llvm-svn: 89850
 2009-11-25 06:53:08 +00:00
Bruno Cardoso Lopes
974ab18d0e Use endianess dependent offsets for load/store of doubles when 
using two swc/lwc instead of sdc/ldc.

llvm-svn: 89826
 2009-11-25 01:05:25 +00:00
Dale Johannesen
916d90c926 Fix compiler warnings. 
llvm-svn: 89824
 2009-11-25 00:58:21 +00:00
Bruno Cardoso Lopes
6d23fc8097 Only include in the callee saved regs the sub registers to avoid 
unnecessary save/restore.

llvm-svn: 89823
 2009-11-25 00:47:43 +00:00
Bruno Cardoso Lopes
7316c984a5 Add proper emission of load/store double to stack slots for mips1 targets! 
llvm-svn: 89821
 2009-11-25 00:36:00 +00:00
Devang Patel
4c7b5eaf23 Revert r89803. 
llvm-svn: 89819
 2009-11-25 00:31:13 +00:00
Bob Wilson
c5fa56c805 Refactor target hook for tail duplication as requested by Chris. 
Make tail duplication of indirect branches much more aggressive (for targets
that indicate that it is profitable), based on further experience with
this transformation.  I compiled 3 large applications with and without
this more aggressive tail duplication and measured minimal changes in code
size.  ("size" on Darwin seems to round the text size up to the nearest
page boundary, so I can only say that any code size increase was less than
one 4k page.) Radar 7421267.

llvm-svn: 89814
 2009-11-24 23:35:49 +00:00
Dale Johannesen
5809ff0e58 Do not store R31 into the caller's link area on PPC. 
This violates the ABI (that area is "reserved"), and
while it is safe if all code is generated with current
compilers, there is some very old code around that uses
that slot for something else, and breaks if it is stored
into.  Adjust testcases looking for current behavior.
I've verified that the stack frame size is right in all
testcases, whether it changed or not.  7311323.

llvm-svn: 89811
 2009-11-24 22:59:02 +00:00
Devang Patel
c68c2293a7 Enable debug info for ppc-darwin. 
llvm-svn: 89803
 2009-11-24 21:38:54 +00:00
Evan Cheng
b81878ed80 Enable predication of NEON instructions in Thumb2 mode. 
llvm-svn: 89748
 2009-11-24 08:06:15 +00:00
Dale Johannesen
ee890316d5 Make capitalization of names starting "is" more consistent. 
No functional change.

llvm-svn: 89724
 2009-11-24 01:09:07 +00:00
Evan Cheng
179a11776c Data type suffix must come after predicate. 
llvm-svn: 89723
 2009-11-24 01:05:23 +00:00
Anton Korobeynikov
0f885eb7fd Materialize global addresses via movt/movw pair, this is always better 
than doing the same via constpool:
1. Load from constpool costs 3 cycles on A9, movt/movw pair - just 2.
2. Load from constpool might stall up to 300 cycles due to cache miss.
3. Movt/movw does not use load/store unit.
4. Less constpool entries => better compiler performance.

This is only enabled on ELF systems, since darwin does not have needed
relocations (yet).

llvm-svn: 89720
 2009-11-24 00:44:37 +00:00
Jim Grosbach
a142a709c8 80 column violations 
llvm-svn: 89718
 2009-11-24 00:20:27 +00:00
Jeffrey Yasskin
0a0b21f8c5 * Move stub allocation inside the JITEmitter, instead of exposing a 
way for each TargetJITInfo subclass to allocate its own stubs. This
means stubs aren't as exactly-sized anymore, but it lets us get rid of
TargetJITInfo::emitFunctionStubAtAddr(), which lets ARM and PPC
support the eager JIT, fixing http://llvm.org/PR4816.

* Rename the JITEmitter's stub creation functions to describe the kind
of stub they create. So far, all of them create lazy-compilation
stubs, but they sometimes get used when far-call stubs are needed.
Fixing http://llvm.org/PR5201 will involve fixing this.

llvm-svn: 89715
 2009-11-23 23:35:19 +00:00
Dan Gohman
b5ec39e2dc Remove ISD::DEBUG_LOC and ISD::DBG_LABEL, which are no longer used. 
Note that "hasDotLocAndDotFile"-style debug info was already broken;
people wanting this functionality should implement it in the
AsmPrinter/DwarfWriter code.

llvm-svn: 89711
 2009-11-23 23:20:51 +00:00
Jeffrey Yasskin
ed6d1ce9ae Allow more than one stub to be being generated at the same time. 
It's probably better in the long run to replace the
indirect-GlobalVariable system. That'll be done after a subsequent
patch.

llvm-svn: 89708
 2009-11-23 22:49:00 +00:00
Evan Cheng
8c9f6147cd Massive refactoring of NEON instructions. Separate opcode from data size specifier suffix, move \t up stream to instruction format, and fix more 80 column violations. 
This fixes the NEON asm printing so the "predicate" field is printed between the opcode and the data type suffix.

llvm-svn: 89706
 2009-11-23 21:57:23 +00:00
Jim Grosbach
76b545e988 move fconst[sd] to UAL. <rdar://7414913> 
llvm-svn: 89700
 2009-11-23 21:08:25 +00:00
Johnny Chen
e59a67f527 Partially revert r84730 by removing N2VDup from ARMInstrFormats.td and modifying 
VDUPLND and VDUPLNQ to derive from N2V instead of N2VDup.  VDUPLND and VDUPLNQ
now expect op19_18 and op17_16 as the first two args.

llvm-svn: 89699
 2009-11-23 21:00:43 +00:00
Jim Grosbach
bbb786facf fold immediate of a + Const into the user as a subtract if it can fit as a negated two-part immediate. 
llvm-svn: 89694
 2009-11-23 20:35:53 +00:00
Johnny Chen
9999d2524e Revert r84572 by removing N3VImm from ARMInstrFormats.td now that we can specify 
{?,?,?,?} as op11_8 for VEXTd and VEXTq.

llvm-svn: 89693
 2009-11-23 20:09:13 +00:00
Johnny Chen
b49fe624e7 Partially revert r89377 by removing NLdStLN class definition from 
ARMInstrFormats.td and fixing VLD[234]LN* and VST[234]LN* to derive from NLdSt
instead of NLdStLN.

llvm-svn: 89684
 2009-11-23 18:16:16 +00:00
Johnny Chen
1116f46301 Make it clear that the index bit(s) of Vector Get Lane and Vector Set Lane 
should be left unspecified now that Bob Wilson has fixed pr5470.

llvm-svn: 89676
 2009-11-23 17:48:17 +00:00
David Goodwin
07713477dc Minor itinerary fixes for FP instructions. 
llvm-svn: 89672
 2009-11-23 17:34:12 +00:00
Jim Grosbach
928cb87167 Move default FrameReg val to getFrameIndexReference(). Otherwise, debug info can get bogus values. 
llvm-svn: 89618
 2009-11-22 20:05:32 +00:00
Jim Grosbach
33f06ed72e Generate more correct debug info for frame indices. 
llvm-svn: 89576
 2009-11-22 02:32:29 +00:00
Anton Korobeynikov
5511c0260f Minor optimization: when doing eq/ne comparions and RHS is a constant - swap operands, this will allow us to fold imm into comparison. 
llvm-svn: 89574
 2009-11-22 01:14:08 +00:00
Anton Korobeynikov
10669b8c42 Drop unsupported imm operands 
llvm-svn: 89573
 2009-11-22 01:13:54 +00:00
Anton Korobeynikov
44886c9a90 Use 2-byte alignment for functions. 4 bytes are clear overkill here. 
llvm-svn: 89572
 2009-11-22 01:13:39 +00:00
Anton Korobeynikov
9cea2b264c Use semicolon as assembler comment string 
llvm-svn: 89571
 2009-11-22 01:12:49 +00:00
Jim Grosbach
99c5b49c61 Revert 89562. We're being sneakier than I was giving us credit for, and this 
isn't necessary.

llvm-svn: 89568
 2009-11-21 23:34:09 +00:00
Jim Grosbach
d4603a5c4e Darwin requires a frame pointer for all non-leaf functions to support correct 
backtraces.

llvm-svn: 89562
 2009-11-21 21:40:08 +00:00
Evan Cheng
a7496ef9a6 Add predicate operand to NEON instructions. Fix lots (but not all) 80 col violations in ARMInstrNEON.td. 
llvm-svn: 89542
 2009-11-21 06:21:52 +00:00
Devang Patel
327919890c We are not using DBG_STOPPOINT anymore. 
llvm-svn: 89536
 2009-11-21 02:46:55 +00:00
Viktor Kutuzov
ac8f027245 Added two SubtargetFeatures::AddFeatures methods, which accept a comma-separated string or already parsed command line parameters as input, and some code re-factoring to use these new methods. 
llvm-svn: 89516
 2009-11-21 00:00:02 +00:00
Dan Gohman
e5eddcd606 Fix a thinko that caused spurious @GOTOFFs. 
llvm-svn: 89509
 2009-11-20 23:30:32 +00:00
Dan Gohman
ca4026afec Update for new getBlockAddress signature. 
llvm-svn: 89507
 2009-11-20 23:21:00 +00:00
Dan Gohman
3517f425b8 Target-independent support for TargetFlags on BlockAddress operands, 
and support for blockaddresses in x86-32 PIC mode.

llvm-svn: 89506
 2009-11-20 23:18:13 +00:00
Sean Callanan
78ee7f5d57 Recommitting PALIGNR shift width fixes. 
Thanks to Daniel Dunbar for fixing clang intrinsics:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=89499

llvm-svn: 89500
 2009-11-20 22:28:42 +00:00
Dale Johannesen
45f80d39f6 Remove an incorrect overaggressive optimization 
(PPC specific).

llvm-svn: 89496
 2009-11-20 22:16:40 +00:00