Eric Christopher [Fri, 21 May 2010 23:03:53 +0000 (23:03 +0000)]
Expand on comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104396
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Kevin Enderby [Fri, 21 May 2010 23:01:38 +0000 (23:01 +0000)]
Added retl for 32-bit x86 and added retq for 64-bit x86.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104394
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Eric Christopher [Fri, 21 May 2010 22:39:11 +0000 (22:39 +0000)]
Fix comment and whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104392
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Chris Lattner [Fri, 21 May 2010 22:20:54 +0000 (22:20 +0000)]
expand on the llvm ir bitcode dox. Patch by Peter Housel!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104391
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Evan Cheng [Fri, 21 May 2010 21:22:19 +0000 (21:22 +0000)]
Allow machine cse to cse instructions which define physical registers. Controlled by option -machine-cse-phys-defs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104385
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Eric Christopher [Fri, 21 May 2010 21:08:52 +0000 (21:08 +0000)]
Fix section attribute name.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104381
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Bob Wilson [Fri, 21 May 2010 21:05:32 +0000 (21:05 +0000)]
Change CodeGen/ARM/2009-11-02-NegativeLane.ll to use 16-bit vector elements
so that it will continue to test what it was meant to test when I commit a
separate change for better support of BUILD_VECTOR and VECTOR_SHUFFLE for Neon.
Fix a DAG combiner crash exposed by this test change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104380
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Evan Cheng [Fri, 21 May 2010 20:53:24 +0000 (20:53 +0000)]
- Change MachineInstr::findRegisterDefOperandIdx so it can also look for defs
that are aliases of the specified register.
- Rename modifiesRegister to definesRegister since it's looking a def of the
specific register or one of its super-registers. It's not looking for def of a
sub-register or alias that could change the specified register.
- Added modifiesRegister to look for defs of aliases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104377
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Jakob Stoklund Olesen [Fri, 21 May 2010 20:02:01 +0000 (20:02 +0000)]
Add MachineInstr::readsWritesVirtualRegister() to determine if an instruction
reads or writes a register.
This takes partial redefines and undef uses into account.
Don't actually use it yet. That caused miscompiles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104372
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Devang Patel [Fri, 21 May 2010 18:49:09 +0000 (18:49 +0000)]
Simplify
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104338
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Dale Johannesen [Fri, 21 May 2010 18:44:47 +0000 (18:44 +0000)]
Previous commit message should refer to 104308.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104337
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Dale Johannesen [Fri, 21 May 2010 18:40:15 +0000 (18:40 +0000)]
Fix two bugs in 104348:
Case where MMX is disabled wasn't handled right.
MMX->MMX bitconverts are Legal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104336
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Nathan Jeffords [Fri, 21 May 2010 18:23:56 +0000 (18:23 +0000)]
added an assertion to MCObjectWriter::WriteBytes to catch misuse of the ZeroFillSize parameter
If the size of the string is greater than the zero fill size, the function will attempt to write a very large string of zeros to the object file (~4GB on 32 bit platforms). This assertion will catch the scenario and crash the program before the write occurs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104334
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Chris Lattner [Fri, 21 May 2010 18:17:54 +0000 (18:17 +0000)]
now that fp reg kill insertion stuff happens as a separate
pass after isel instead of being interlaced with it, we can
trust that all the code for a function has been isel'd before
it is run.
The practical impact of this is that we can scan for machine
instr phis instead of doing a fuzzy match on the LLVM BB for
phi nodes. Doing the fuzzy match required knowing when isel
would produce an fp reg stack phi which was gross. It was
also wrong in cases where select got lowered to a branch
tree because cmovs aren't available (PR6828).
Just do the scan on machine phis which is simpler, faster
and more correct. This fixes PR6828.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104333
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Chris Lattner [Fri, 21 May 2010 18:02:42 +0000 (18:02 +0000)]
Use less evil form of switch stmt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104331
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Chris Lattner [Fri, 21 May 2010 18:01:24 +0000 (18:01 +0000)]
use continue to reduce nesting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104330
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Chris Lattner [Fri, 21 May 2010 17:57:03 +0000 (17:57 +0000)]
pull a nested loop of this pass out to its own function,
eliminating the gymnastics around the ContainsFPCode var.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104328
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Chris Lattner [Fri, 21 May 2010 17:49:07 +0000 (17:49 +0000)]
modernize this pass a bit, fit in 80 columns.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104326
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Chris Lattner [Fri, 21 May 2010 17:47:50 +0000 (17:47 +0000)]
constify accessor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104325
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Jakob Stoklund Olesen [Fri, 21 May 2010 17:36:32 +0000 (17:36 +0000)]
Revert "Use MachineInstr::readsWritesVirtualRegister to determine if a register is read."
This reverts r104322. I think it was causing miscompilations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104323
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Jakob Stoklund Olesen [Fri, 21 May 2010 16:42:30 +0000 (16:42 +0000)]
Use MachineInstr::readsWritesVirtualRegister to determine if a register is read.
This correctly handles partial redefines and undef uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104322
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Jakob Stoklund Olesen [Fri, 21 May 2010 16:36:13 +0000 (16:36 +0000)]
Teach VirtRegRewriter to handle spilling in instructions that have multiple
definitions of the virtual register.
This happens when spilling the registers produced by REG_SEQUENCE:
%reg1047:5<def>, %reg1047:6<def>, %reg1047:7<def> = VLD3d8 %reg1033, 0, pred:14, pred:%reg0
The rewriter would spill the register multiple times, dead store elimination
tried to keep up, but ended up cutting the branch it was sitting on.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104321
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Jakob Stoklund Olesen [Fri, 21 May 2010 16:32:16 +0000 (16:32 +0000)]
If the first definition of a virtual register is a partial redef, add an
<imp-def> operand for the full register. This ensures that the full physical
register is marked live after register allocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104320
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Matt Fleming [Fri, 21 May 2010 12:54:43 +0000 (12:54 +0000)]
Currently, createMachOStreamer() is invoked directly in llvm-mc which
isn't ideal if we want to be able to use another object file format.
Add a createObjectStreamer() factory method so that the correct object
file streamer can be instantiated for a given target triple.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104318
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Matt Fleming [Fri, 21 May 2010 11:39:07 +0000 (11:39 +0000)]
Split out the x86_32 an x86_64 ELF backends as they handle ELF
differently. This will make adding ELF support easier in the long run.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104317
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Matt Fleming [Fri, 21 May 2010 11:36:59 +0000 (11:36 +0000)]
Add support for parsing the ELF .type assembler directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104316
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Lang Hames [Fri, 21 May 2010 03:04:04 +0000 (03:04 +0000)]
Removed scaleNumbering method declaration from LiveInterval (not defined, not used).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104311
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Dale Johannesen [Fri, 21 May 2010 00:52:33 +0000 (00:52 +0000)]
Fix i64->f64 conversion, x86-64, -no-sse. A bit
tricky since there's a 3rd 64-bit type, MMX vectors.
PR 7135.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104308
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Evan Cheng [Fri, 21 May 2010 00:43:17 +0000 (00:43 +0000)]
Change ARM scheduling default to list-hybrid if the target supports floating point instructions (and is not using soft float).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104307
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Evan Cheng [Fri, 21 May 2010 00:42:32 +0000 (00:42 +0000)]
Rename -pre-RA-sched=hybrid to -pre-RA-sched=list-hybrid.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104306
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Daniel Dunbar [Fri, 21 May 2010 00:27:55 +0000 (00:27 +0000)]
Remove dead option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104303
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Devang Patel [Fri, 21 May 2010 00:10:20 +0000 (00:10 +0000)]
Simplify.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104302
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Daniel Dunbar [Thu, 20 May 2010 23:50:19 +0000 (23:50 +0000)]
Fix __crashreport_info__ declaration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104300
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Evan Cheng [Thu, 20 May 2010 23:26:43 +0000 (23:26 +0000)]
Allow targets more controls on what nodes are scheduled by reg pressure, what for latency in hybrid mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104293
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Dan Gohman [Thu, 20 May 2010 22:46:54 +0000 (22:46 +0000)]
DominatorTree.getNode can return null for unreachable blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104290
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Dan Gohman [Thu, 20 May 2010 22:25:20 +0000 (22:25 +0000)]
Minor code cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104287
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Mikhail Glushenkov [Thu, 20 May 2010 21:11:37 +0000 (21:11 +0000)]
Print a space after the colon.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104279
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Dan Gohman [Thu, 20 May 2010 20:59:23 +0000 (20:59 +0000)]
Make Solve check its own post-condition, to reduce clutter in the
top-level LSRInstance logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104278
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Dan Gohman [Thu, 20 May 2010 20:52:00 +0000 (20:52 +0000)]
Add comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104276
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Daniel Dunbar [Thu, 20 May 2010 20:36:29 +0000 (20:36 +0000)]
MC/X86: Add movq alias for movabsq, to allow matching 64-bit immediates with movq.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104275
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Devang Patel [Thu, 20 May 2010 20:35:24 +0000 (20:35 +0000)]
Rename variable. add comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104274
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Dan Gohman [Thu, 20 May 2010 20:33:18 +0000 (20:33 +0000)]
More code cleanups. Use iterators instead of indices when indices
aren't needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104273
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Daniel Dunbar [Thu, 20 May 2010 20:20:39 +0000 (20:20 +0000)]
X86: Model i64i32imm properly, as a subclass of all immediates.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104272
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Daniel Dunbar [Thu, 20 May 2010 20:20:35 +0000 (20:20 +0000)]
X86: Fix immediate type of FOO64i32 operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104271
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Daniel Dunbar [Thu, 20 May 2010 20:20:32 +0000 (20:20 +0000)]
tblgen/Target: Add a isAsmParserOnly bit, and teach the disassembler to honor
it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104270
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Dan Gohman [Thu, 20 May 2010 20:05:31 +0000 (20:05 +0000)]
Fix OptimizeShadowIV to set Changed. Change OptimizeLoopTermCond to set
Changed directly instead of using a return value.
Rename FilterOutUndesirableDedicatedRegisters's Changed variable to
distinguish it from LSRInstance's Changed member.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104269
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Dan Gohman [Thu, 20 May 2010 20:00:41 +0000 (20:00 +0000)]
Add some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104268
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Dan Gohman [Thu, 20 May 2010 20:00:25 +0000 (20:00 +0000)]
Simplify this code. Don't do a DomTreeNode lookup for each visited block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104267
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Devang Patel [Thu, 20 May 2010 19:57:06 +0000 (19:57 +0000)]
Refactor.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104265
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Matt Fleming [Thu, 20 May 2010 19:45:09 +0000 (19:45 +0000)]
Grammar fix. This is a test commit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104264
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Dan Gohman [Thu, 20 May 2010 19:44:23 +0000 (19:44 +0000)]
Minor code cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104263
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Dan Gohman [Thu, 20 May 2010 19:26:52 +0000 (19:26 +0000)]
When canonicalizing icmp operand order to put the loop invariant
operand on the left, the interesting operand is on the right. This
fixes a bug where LSR was failing to recognize ICmpZero uses,
which led it to be unable to reverse the induction variable in the
attached testcase.
Delete test/CodeGen/X86/stack-color-with-reg-2.ll, because its test
is extremely fragile and hard to meaningfully update.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104262
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Mikhail Glushenkov [Thu, 20 May 2010 19:23:47 +0000 (19:23 +0000)]
llvmc: Make segfault detection work on Win32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104261
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Dan Gohman [Thu, 20 May 2010 19:16:03 +0000 (19:16 +0000)]
Set Changed to true when canonicalizing ICmp operand order; even though
it isn't a very interesting change, it's a change nonetheless.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104260
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Bob Wilson [Thu, 20 May 2010 18:39:53 +0000 (18:39 +0000)]
Handle Neon v2f64 and v2i64 vector shuffles as register copies.
This fixes the remaining issue with pr7167.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104257
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Jim Grosbach [Thu, 20 May 2010 18:34:01 +0000 (18:34 +0000)]
Remove dbg_value workaround and associated command line option
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104254
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Dan Gohman [Thu, 20 May 2010 18:05:01 +0000 (18:05 +0000)]
Delete MMX_MOVQ64gmr. It was the same as MMX_MOVQ64mr, but it didn't
have a pattern and it had an invalid encoding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104244
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Dale Johannesen [Thu, 20 May 2010 17:48:26 +0000 (17:48 +0000)]
The PPC MFCR instruction implicitly uses all 8 of the CR
registers. Currently it is not so marked, which leads to
VCMPEQ instructions that feed into it getting deleted.
If it is so marked, local RA complains about this sequence:
vreg = MCRF CR0
MFCR <kill of whatever preg got assigned to vreg>
All current uses of this instruction are only interested in
one of the 8 CR registers, so redefine MFCR to be a normal
unary instruction with a CR input (which is emitted only as
a comment). That avoids all problems.
7739628.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104238
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Devang Patel [Thu, 20 May 2010 16:49:22 +0000 (16:49 +0000)]
Strip llvm.dbg.lv also.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104236
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Dan Gohman [Thu, 20 May 2010 16:41:11 +0000 (16:41 +0000)]
Rename a variable to avoid shadowing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104234
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Devang Patel [Thu, 20 May 2010 16:36:41 +0000 (16:36 +0000)]
Split DbgVariable. Eventually, variable info will be communicated through frame index, or DBG_VALUE instruction, or collection of DBG_VALUE instructions. Plus each DbgVariable may not need a label.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104233
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Dan Gohman [Thu, 20 May 2010 16:23:28 +0000 (16:23 +0000)]
Minor code simplification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104232
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Dan Gohman [Thu, 20 May 2010 16:16:00 +0000 (16:16 +0000)]
Fix assembly parsing and encoding of the pushf and popf family of
instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104231
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Dan Gohman [Thu, 20 May 2010 15:42:55 +0000 (15:42 +0000)]
Set neverHasSideEffects on 64-bit pushf and popf, for consistency with
16-bit and 32-bit pushf and popf.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104228
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Dan Gohman [Thu, 20 May 2010 15:17:54 +0000 (15:17 +0000)]
Move the code for deleting BaseRegs and LSRUses into helper functions,
and fix a bug that valgrind noticed where the code would std::swap an
element with itself.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104225
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Benjamin Kramer [Thu, 20 May 2010 14:14:22 +0000 (14:14 +0000)]
Reduce string trashing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104223
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Evan Cheng [Thu, 20 May 2010 06:13:19 +0000 (06:13 +0000)]
Add a hybrid bottom up scheduler that reduce register usage while avoiding
pipeline stall. It's useful for targets like ARM cortex-a8. NEON has a lot
of long latency instructions so a strict register pressure reduction
scheduler does not work well.
Early experiments show this speeds up some NEON loops by over 30%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104216
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Nick Lewycky [Thu, 20 May 2010 03:30:09 +0000 (03:30 +0000)]
Fix typo in comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104209
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Dan Gohman [Thu, 20 May 2010 01:35:50 +0000 (01:35 +0000)]
Define the x86 pause instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104204
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Dan Gohman [Thu, 20 May 2010 01:23:41 +0000 (01:23 +0000)]
Fix the sfence instruction to use MRM_F8 instead of MRM7r, since it
doesn't have a register operand. Also, use I instead of PSI, for
consistency with mfence and lfence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104203
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Eric Christopher [Thu, 20 May 2010 00:59:30 +0000 (00:59 +0000)]
Fix build by actually declaring the variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104201
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Eric Christopher [Thu, 20 May 2010 00:49:07 +0000 (00:49 +0000)]
Partial code for emitting thread local bss data.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104197
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Bill Wendling [Thu, 20 May 2010 00:27:10 +0000 (00:27 +0000)]
Match "4" or "8" depending upon if it's 32- or 64-bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104196
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Eric Christopher [Thu, 20 May 2010 00:07:13 +0000 (00:07 +0000)]
Once more, with feeling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104190
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Daniel Dunbar [Wed, 19 May 2010 23:56:09 +0000 (23:56 +0000)]
lit: Add another place to look for bash.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104189
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Dan Gohman [Wed, 19 May 2010 23:43:12 +0000 (23:43 +0000)]
Teach LSR how to cope better with unrolled loops on targets where
the addressing modes don't make this trivially easy. This allows
it to avoid falling into the less precise heuristics in more
cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104186
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Bob Wilson [Wed, 19 May 2010 23:42:58 +0000 (23:42 +0000)]
Optimize away insertelement of an undef value. This shows up in
test/Codegen/ARM/reg_sequence.ll but it doesn't affect the generated code
because the coalescer cleans it up. Radar
7998853.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104185
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Chris Lattner [Wed, 19 May 2010 23:34:33 +0000 (23:34 +0000)]
fix rdar://
7986634 - match instruction opcodes case insensitively.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104183
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Bill Wendling [Wed, 19 May 2010 23:33:26 +0000 (23:33 +0000)]
Testcase for r104181.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104182
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Jim Grosbach [Wed, 19 May 2010 22:57:47 +0000 (22:57 +0000)]
Enable preserving debug information through post-RA scheduling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104175
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Jim Grosbach [Wed, 19 May 2010 22:57:06 +0000 (22:57 +0000)]
Fix the post-RA instruction scheduler to handle instructions referenced by
more than one dbg_value instruction. rdar://
7759363
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104174
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Evan Cheng [Wed, 19 May 2010 22:42:23 +0000 (22:42 +0000)]
Code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104173
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Devang Patel [Wed, 19 May 2010 21:58:28 +0000 (21:58 +0000)]
Revert r104165.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104172
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Jakob Stoklund Olesen [Wed, 19 May 2010 21:36:05 +0000 (21:36 +0000)]
Add support for partial redefs to the fast register allocator.
A partial redef now triggers a reload if required. Also don't add
<imp-def,dead> operands for physical superregisters.
Kill flags are still treated as full register kills, and <imp-use,kill> operands
are added for physical superregisters as before.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104167
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Devang Patel [Wed, 19 May 2010 21:26:53 +0000 (21:26 +0000)]
There is no need to maintain InsnsBeginScopeSet separately.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104165
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Eric Christopher [Wed, 19 May 2010 21:19:42 +0000 (21:19 +0000)]
A more combo tls testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104163
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Jakob Stoklund Olesen [Wed, 19 May 2010 20:36:22 +0000 (20:36 +0000)]
Add MachineInstr::readsVirtualRegister() in preparation for proper handling of
partial redefines.
We are going to treat a partial redefine of a virtual register as a
read-modify-write:
%reg1024:6 = OP
Unless the register is fully clobbered:
%reg1024:6 = OP, %reg1024<imp-def>
MachineInstr::readsVirtualRegister() knows the difference. The first case is a
read, the second isn't.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104149
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Eric Christopher [Wed, 19 May 2010 20:35:15 +0000 (20:35 +0000)]
Few more simple tls testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104148
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Evan Cheng [Wed, 19 May 2010 20:19:50 +0000 (20:19 +0000)]
Code refactoring: pull SchedPreference enum from TargetLowering.h to TargetMachine.h and put it in its own namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104147
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Jakob Stoklund Olesen [Wed, 19 May 2010 20:08:00 +0000 (20:08 +0000)]
TwoAddressInstructionPass doesn't really know how to merge live intervals when
lowering REG_SEQUENCE instructions.
Insert copies for REG_SEQUENCE sources not killed to avoid breaking later passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104146
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Mikhail Glushenkov [Wed, 19 May 2010 19:24:32 +0000 (19:24 +0000)]
llvmc: report an error if a child process segfaults.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104145
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Eric Christopher [Wed, 19 May 2010 18:59:37 +0000 (18:59 +0000)]
Attempt to run this test on x86 only.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104143
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Bob Wilson [Wed, 19 May 2010 18:58:37 +0000 (18:58 +0000)]
Testcase to go with 104141.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104142
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Bob Wilson [Wed, 19 May 2010 18:48:32 +0000 (18:48 +0000)]
When expanding a vector_shuffle, the element type may not be legal and may
need to be promoted. The BUILD_VECTOR and EXTRACT_VECTOR_ELT nodes generated
here already allow the promoted type to be used without further changes, so
just do the promotion. This fixes part of pr7167.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104141
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Daniel Dunbar [Wed, 19 May 2010 17:20:58 +0000 (17:20 +0000)]
MC/X86: Add missing entry for TAILJMP_1 to getRelaxedOpcode().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104122
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Daniel Dunbar [Wed, 19 May 2010 15:26:43 +0000 (15:26 +0000)]
MC/X86: Lower TAILCALLd[64] to JMP_1, to allow relaxation and to avoid same
prefix byte problem as in r104062.
- As a total hack to keep the TAILCALL markers in the output, which some tests depend on, this invents a new TAILJMP_1 instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104120
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Daniel Dunbar [Wed, 19 May 2010 08:07:12 +0000 (08:07 +0000)]
MC/X86: Strip spurious operands from TAILJMPr64 as we do for CALL64r and
CALL64pcrel32, for the same reason.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104116
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Evan Cheng [Wed, 19 May 2010 07:28:01 +0000 (07:28 +0000)]
t2LEApcrel and tLEApcrel are re-materializable. This makes it possible to hoist more loads during machine LICM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104115
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Evan Cheng [Wed, 19 May 2010 07:26:50 +0000 (07:26 +0000)]
Use 'adr' for LEApcrel and LEApcrel. Mark LEApcrel re-materializable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104114
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Tobias Grosser [Wed, 19 May 2010 07:00:17 +0000 (07:00 +0000)]
Update autoconf/automake versions in the documentation to match the versions used in Autogen.sh
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104113
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