Dan Gohman [Tue, 18 May 2010 22:41:32 +0000 (22:41 +0000)]
Add some more debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104080
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Dan Gohman [Tue, 18 May 2010 22:39:15 +0000 (22:39 +0000)]
Factor out the code for deleting a formula from an LSRUse into
a helper function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104079
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Dan Gohman [Tue, 18 May 2010 22:37:37 +0000 (22:37 +0000)]
Make some debug output more informative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104078
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Dan Gohman [Tue, 18 May 2010 22:35:55 +0000 (22:35 +0000)]
Print an error message in Formula::print if the HasBaseReg flag
is inconsistent with the BaseRegs field. It's not print's job to
assert on an invalid condition, but it can make one more obvious.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104077
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Dan Gohman [Tue, 18 May 2010 22:33:00 +0000 (22:33 +0000)]
Rename RegUseTracker's RegUses member to RegUsesMap to avoid
confusion with LSRInstance's RegUses member.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104076
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Jakob Stoklund Olesen [Tue, 18 May 2010 22:20:09 +0000 (22:20 +0000)]
Remember to update VirtRegLastUse when spilling without killing before a call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104074
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Dan Gohman [Tue, 18 May 2010 21:54:15 +0000 (21:54 +0000)]
Teach mode load folding and unfolding code about CMP32ri8 and friends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104068
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Bill Wendling [Tue, 18 May 2010 21:47:08 +0000 (21:47 +0000)]
Don't eliminate frame pointers from leaf functions if "--disable-fp-elim" is
specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104066
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Dan Gohman [Tue, 18 May 2010 21:42:03 +0000 (21:42 +0000)]
When converting a test to a cmp to fold a load, use the cmp that has an
8-bit immediate field rather than one with a wider immediate field.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104064
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Eric Christopher [Tue, 18 May 2010 21:40:20 +0000 (21:40 +0000)]
Quick test to make sure we're emitting the tbss section correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104063
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Chris Lattner [Tue, 18 May 2010 21:40:18 +0000 (21:40 +0000)]
make mcinstlower remove all but the first operand to CALL64pcrel32.
The register use operands (e.g. the first argument is passed in a
register) is currently being modeled as a normal register use,
instead of correctly being an implicit use. This causes the operand
to get propagated onto the mcinst, which was causing the encoder to
emit a rex prefix byte, which generates an invalid call.
This fixes rdar://
7998435
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104062
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Evan Cheng [Tue, 18 May 2010 21:31:17 +0000 (21:31 +0000)]
Sink dag combine's post index load / store code that swap base ptr and index into the target hook. Only the target knows whether the swap is safe. In Thumb2 mode, the offset must be an immediate. rdar://
7998649
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104060
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Eric Christopher [Tue, 18 May 2010 21:26:41 +0000 (21:26 +0000)]
Implement EmitTBSSSymbol for MachOStreamer.
Fixes build failure as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104059
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mike-m [Tue, 18 May 2010 21:22:12 +0000 (21:22 +0000)]
Fix enum to address array bounds regression.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104058
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Eric Christopher [Tue, 18 May 2010 21:16:04 +0000 (21:16 +0000)]
Make EmitTBSSSymbol take a section argument so that we can find it later.
Fix up callers and users.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104057
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Jakob Stoklund Olesen [Tue, 18 May 2010 21:10:50 +0000 (21:10 +0000)]
Properly handle multiple definitions of a virtual register in the same
instruction.
This can happen on ARM:
>> %reg1035:5<def>, %reg1035:6<def> = VLD1q16 %reg1028, 0, pred:14, pred:%reg0
Regs: Q0=%reg1032* R0=%reg1028* R1=%reg1029* R2 R3=%reg1031*
Killing last use: %reg1028
Allocating %reg1035 from QPR
Assigning %reg1035 to Q1
<< %D2<def>, %D3<def> = VLD1q16 %R0<kill>, 0, pred:14, pred:%reg0, %Q1<imp-def>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104056
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Dale Johannesen [Tue, 18 May 2010 20:47:04 +0000 (20:47 +0000)]
Test passed on ppc, to my surprise; if it worked
there it may work everywhere...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104053
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Evan Cheng [Tue, 18 May 2010 20:07:47 +0000 (20:07 +0000)]
Continuously refine the register class of REG_SEQUENCE def with all the source registers and sub-register indices.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104051
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Evan Cheng [Tue, 18 May 2010 20:03:28 +0000 (20:03 +0000)]
Fix PR7162: Use source register classes and sub-indices to determine the correct register class of the definitions of REG_SEQUENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104050
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Dale Johannesen [Tue, 18 May 2010 19:03:51 +0000 (19:03 +0000)]
Testcase for llvm-gcc checkin 104042.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104043
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Kevin Enderby [Tue, 18 May 2010 18:09:20 +0000 (18:09 +0000)]
Incorporate Daniel's suggestion and use !isdigit(CurPtr[0]) and not
CurPtr[0] == '\n' when testing the character after a "0b" when looking
to see if it part of a something like "jmp 0b".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104039
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Kevin Enderby [Tue, 18 May 2010 17:51:35 +0000 (17:51 +0000)]
Fixed the problem with a branch to "0b" that was not parsed by llvm-mc
correctly. The Lexer was incorrectly eating the newline casusing it to branch
to address 0. Updated the test case to use a "0:" label and a branch to "0b".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104038
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Jakob Stoklund Olesen [Tue, 18 May 2010 17:31:12 +0000 (17:31 +0000)]
Teach the machine code verifier to use getSubRegisterRegClass().
The old approach was wrong. It had an off-by-one error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104034
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Daniel Dunbar [Tue, 18 May 2010 17:28:24 +0000 (17:28 +0000)]
MC/Mach-O: Implement support for setting indirect symbol table offset in section header.
Also, create symbol data for LHS of assignment, to match 'as' symbol ordering better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104033
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Daniel Dunbar [Tue, 18 May 2010 17:28:20 +0000 (17:28 +0000)]
MC/Mach-O: Remove some FIXMEs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104032
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Daniel Dunbar [Tue, 18 May 2010 17:28:17 +0000 (17:28 +0000)]
MC/Mach-O: Fail faster/harder when we see .file, which isn't yet supported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104031
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Daniel Dunbar [Tue, 18 May 2010 17:22:24 +0000 (17:22 +0000)]
MC/X86: Implement custom lowering to make sure we match things like
X86::ADC32ri $0, %eax
to
X86::ADC32i32 $0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104030
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Daniel Dunbar [Tue, 18 May 2010 17:22:19 +0000 (17:22 +0000)]
llc (et al): Add support for --show-encoding and --show-inst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104029
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Dan Gohman [Tue, 18 May 2010 15:25:14 +0000 (15:25 +0000)]
Usage of O_NONBLOCK in bjam is now confirmed as a bug and fixed upstream.
Update the comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104021
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Benjamin Kramer [Tue, 18 May 2010 12:15:34 +0000 (12:15 +0000)]
Simplify MCContext::(Next|Get)Instance
- Allocate MCLabels in the context so they don't leak.
- Avoid duplicated densemap lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104020
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Sean Hunt [Tue, 18 May 2010 06:22:50 +0000 (06:22 +0000)]
Replace FIRST_* and LAST_* macros with a generic STMT_RANGE macro
Also rename ABSTRACT to ABSTRACT_STMT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104018
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Evan Cheng [Tue, 18 May 2010 00:03:40 +0000 (00:03 +0000)]
FIX PR7158. SimplifyVBinOp was asserting when it fails to constant fold (op (build_vector), (build_vector)).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104004
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Jakob Stoklund Olesen [Mon, 17 May 2010 23:29:23 +0000 (23:29 +0000)]
ARMBaseRegisterInfo::estimateRSStackSizeLimit() could return prematurely with a
too large limit.
The function would return immediately when finding an addrmode 3/5 instruction.
It needs to keep scanning in case there is an addrmode 6 instruction which drops
the limit to 0.
A test case is very difficult to produce because it will only fail when the
scavenger is used.
rdar://problem/
7894847
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103995
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Evan Cheng [Mon, 17 May 2010 23:24:12 +0000 (23:24 +0000)]
Fix PR7175. Insert copies of a REG_SEQUENCE source if it is used by other REG_SEQUENCE instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103994
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Bill Wendling [Mon, 17 May 2010 23:09:50 +0000 (23:09 +0000)]
- Set the "HasCalls" flag after instruction selection is finished.
- Change the logic DisableFramePointerElim() to check for the
-disable-non-leaf-fp-elim before -disable-fp-elim.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103990
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Kevin Enderby [Mon, 17 May 2010 23:08:19 +0000 (23:08 +0000)]
Added support in MC for Directional Local Labels.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103989
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Eric Christopher [Mon, 17 May 2010 22:53:55 +0000 (22:53 +0000)]
More data/parsing support for tls directives. Add a few more testcases
and cleanup comments as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103985
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Evan Cheng [Mon, 17 May 2010 22:09:49 +0000 (22:09 +0000)]
Fix PR7156. If the sources of a REG_SEQUENCE are all IMPLICIT_DEF's. Replace it with an IMPLICIT_DEF rather than deleting it or else it would be left without a def.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103984
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Evan Cheng [Mon, 17 May 2010 21:54:50 +0000 (21:54 +0000)]
vmov of immediates are trivially re-materializable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103982
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Daniel Dunbar [Mon, 17 May 2010 21:54:30 +0000 (21:54 +0000)]
MC/Mach-O/x86: Optimal nop sequences should only be used for the .text sections, not all sections in the text segment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103981
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Daniel Dunbar [Mon, 17 May 2010 21:54:26 +0000 (21:54 +0000)]
MC: Add dyn_cast support to MCSection.
- Of questionable utility, since in general anything which wants to do this should probably be within a target specific hook, which can rely on the sections being of the appropriate type. However, it can be useful for short term hacks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103980
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Daniel Dunbar [Mon, 17 May 2010 21:19:59 +0000 (21:19 +0000)]
MC/Mach-O: Reverse order of SymbolData scanning when emitting instructions.
- This fixes a string table mismatch with 'as' when two new symbols are defined
in a single instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103979
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Jakob Stoklund Olesen [Mon, 17 May 2010 21:02:08 +0000 (21:02 +0000)]
Pull the UsedInInstr.test() calls into calcSpillCost() and remember aliases.
This fixes the miscompilations of MultiSource/Applications/JM/l{en,de}cod.
Clang now successfully self hosts in a debug build with the fast register allocator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103975
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Eric Christopher [Mon, 17 May 2010 21:02:07 +0000 (21:02 +0000)]
Add some section and constant support for darwin TLS.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103974
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Evan Cheng [Mon, 17 May 2010 20:57:12 +0000 (20:57 +0000)]
Careful with reg_sequence coalescing to not to overwrite sub-register indices.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103971
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Bob Wilson [Mon, 17 May 2010 20:31:13 +0000 (20:31 +0000)]
Fix a regression in 464.h264 for thumb1 and thumb2 nightly tests.
Obvious in retrospect but not fun to debug.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103969
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Daniel Dunbar [Mon, 17 May 2010 20:12:31 +0000 (20:12 +0000)]
MC/Mach-O: Fix some differences in symbol flag handling.
- Don't clear weak reference flag, 'as' was only "trying" to do this, it wasn't
actually succeeding.
- Clear the "lazy bound" bit when we mark something external. This corresponds
roughly to the lazy clearing of the bit that 'as' implements in
symbol_table_lookup.
- The exact meaning of these flags appears pretty loose, since 'as' isn't very
consistent. For now we just try to match 'as', we will clean this up one day
hopefully.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103964
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Jakob Stoklund Olesen [Mon, 17 May 2010 20:01:24 +0000 (20:01 +0000)]
Optimize empty DenseMap iteration.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103962
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Jakob Stoklund Olesen [Mon, 17 May 2010 20:01:22 +0000 (20:01 +0000)]
Remove debug option. Add comment on spill order determinism.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103961
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Evan Cheng [Mon, 17 May 2010 19:51:20 +0000 (19:51 +0000)]
Turn on -neon-reg-sequence by default.
Using NEON load / store multiple instructions will no longer create gobs of vmov of D registers!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103960
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Daniel Dunbar [Mon, 17 May 2010 17:46:23 +0000 (17:46 +0000)]
llvm-mc: Support reassignment of variables in one special case, when the
variable has not yet been used in an expression. This allows us to support a few
cases that show up in real code (mostly because gcc generates it for Objective-C
on Darwin), without giving up a reasonable semantic model for assignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103950
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Jakob Stoklund Olesen [Mon, 17 May 2010 17:18:59 +0000 (17:18 +0000)]
Avoid allocating the same physreg to multiple virtregs in one instruction.
While that approach works wonders for register pressure, it tends to break
everything.
This should unbreak the arm-linux builder and fix a number of miscompilations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103946
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Jakob Stoklund Olesen [Mon, 17 May 2010 15:30:37 +0000 (15:30 +0000)]
Minor optimizations. DenseMap::begin() is surprisingly slow on an empty map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103940
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Jakob Stoklund Olesen [Mon, 17 May 2010 15:30:32 +0000 (15:30 +0000)]
Extract spill cost calculation to a new method, and use definePhysReg() to clear
out aliases when allocating. Clean up allocVirtReg().
Use calcSpillCost() to allow more aggressive hinting. Now the hint is always
taken unless blocked by a reserved register. This leads to more coalescing,
lower register pressure, and less spilling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103939
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Zhongxing Xu [Mon, 17 May 2010 09:47:55 +0000 (09:47 +0000)]
Remove unused member variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103936
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Jakob Stoklund Olesen [Mon, 17 May 2010 04:50:57 +0000 (04:50 +0000)]
Only use clairvoyance when defining a register, and then only if it has one use.
This makes allocation independent on the ordering of use-def chains.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103935
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Jakob Stoklund Olesen [Mon, 17 May 2010 03:26:09 +0000 (03:26 +0000)]
Eliminate a hash table probe when killing virtual registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103934
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Jakob Stoklund Olesen [Mon, 17 May 2010 03:26:06 +0000 (03:26 +0000)]
Execute virtreg kills immediately instead of after processing all uses.
This is safe to do because the physreg has been marked UsedInInstr and the kill flag will be set on the last operand using the virtreg if there are more then one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103933
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:49:21 +0000 (02:49 +0000)]
Sprinkle superregister <imp-def> and <imp-kill> operands when dealing with subregister indices.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103931
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:49:18 +0000 (02:49 +0000)]
Now that we don't keep live registers across calls, there is not reason to go
through the very long list of call-clobbered registers. We just assume all
registers are clobbered.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103930
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:49:15 +0000 (02:49 +0000)]
Boldly attempt consistent capitalization. Functional changes unintended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103929
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Eric Christopher [Mon, 17 May 2010 02:13:02 +0000 (02:13 +0000)]
Assume that we'll handle mangling the symbols earlier and just put the
symbol to the file as we have it. Simplifies out tbss handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103928
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:07:32 +0000 (02:07 +0000)]
Spill and kill all virtual registers across a call.
Debug code doesn't use callee saved registers anyway, and the code is simpler this way. Now spillVirtReg always kills, and the isKill parameter is not needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103927
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:07:29 +0000 (02:07 +0000)]
Reduce hashtable probes by using DenseMap::insert() for lookup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103926
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Jakob Stoklund Olesen [Mon, 17 May 2010 02:07:22 +0000 (02:07 +0000)]
Make MBB a class member instead of passing it around everywhere.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103925
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Evan Cheng [Mon, 17 May 2010 01:47:47 +0000 (01:47 +0000)]
Yes, if the redef is a copy, update the old val# with the copy. But make sure to clear the copy field if the redef is not a copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103922
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Evan Cheng [Mon, 17 May 2010 01:11:46 +0000 (01:11 +0000)]
No reason not to run the NEON domain croassing fix up pass in thumb2 mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103917
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Dale Johannesen [Sun, 16 May 2010 20:19:40 +0000 (20:19 +0000)]
Removing as part of previous reversion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103915
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Dale Johannesen [Sun, 16 May 2010 20:19:04 +0000 (20:19 +0000)]
Revert 103911; it broke a test that expects bitconvert
<1xi64> -> i64 to work in MMX registers on hosts where -no-sse
is the default (not mine). The right thing is
to accept this and make i64->f64 conversions go through memory,
but I don't have time right now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103914
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Dale Johannesen [Sun, 16 May 2010 18:22:38 +0000 (18:22 +0000)]
Make x86-64 64-bit bitconvert work when SSE is not available.
(This worked as of about 6 months ago and I didn't track down
exactly what broke it; I think this fix is appropriate.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103911
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Anton Korobeynikov [Sun, 16 May 2010 09:15:36 +0000 (09:15 +0000)]
Chris said that the comment char should be escaped. Fix all the occurences of "@" in *.td
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103903
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Anton Korobeynikov [Sun, 16 May 2010 09:08:45 +0000 (09:08 +0000)]
Add support for thiscall calling convention.
Patch by Charles Davis and Steven Watanabe!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103902
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Anton Korobeynikov [Sun, 16 May 2010 08:54:20 +0000 (08:54 +0000)]
Generalize the ARM DAG combiner of mul with constants to all power-of-two cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103901
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Evan Cheng [Sun, 16 May 2010 03:27:48 +0000 (03:27 +0000)]
Model vst lane instructions with REG_SEQUENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103898
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Rafael Espindola [Sun, 16 May 2010 03:13:23 +0000 (03:13 +0000)]
Avoid renaming loadable modules at install time. Now the gold plugin is named
LLVMgold.so both in both the build and install directories.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103897
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Rafael Espindola [Sun, 16 May 2010 03:05:14 +0000 (03:05 +0000)]
Use $ORIGIN in the rpath of libraries.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103896
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Dale Johannesen [Sat, 15 May 2010 18:51:12 +0000 (18:51 +0000)]
Fix uint64->{float, double} conversion to do rounding correctly in 32-bit.
The implementation in LegalizeIntegerTypes to handle this as
sint64->float + appropriate power of 2 is subject to double rounding,
considered incorrect by numerics people. Use this implementation only
when it is safe. This leads to using library calls in some cases
that produced inline code before, but it's correct now.
(EVTToAPFloatSemantics belongs somewhere else, any suggestions?)
Add a correctly rounding (though not particularly fast) conversion
that uses X87 80-bit computations for x86-32.
7885399,
5901940. This shows up in gcc.c-torture/execute/ieee/rbug.c
in the gcc testsuite on some platforms.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103883
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Dale Johannesen [Sat, 15 May 2010 18:38:02 +0000 (18:38 +0000)]
Improve assertion messages.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103882
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Anton Korobeynikov [Sat, 15 May 2010 18:16:59 +0000 (18:16 +0000)]
Some cheap DAG combine goodness for multiplication with a particular constant.
This can be extended later on to handle more "complex" constants.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103881
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Anton Korobeynikov [Sat, 15 May 2010 17:19:20 +0000 (17:19 +0000)]
"trap" pseudo-op turned out to be apple-local.
Temporary emit it as raw bytes until it will be added to binutils as well.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103878
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Chris Lattner [Sat, 15 May 2010 17:11:55 +0000 (17:11 +0000)]
improve portability to systems that don't have round, patch by
Evzen Muller!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103877
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Chris Lattner [Sat, 15 May 2010 17:10:24 +0000 (17:10 +0000)]
improve portability to systems that don't have powf/modf (e.g. solaris 9)
patch by Evzen Muller!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103876
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Chandler Carruth [Sat, 15 May 2010 10:23:23 +0000 (10:23 +0000)]
Fix an GCC warning that seems to have actually caught a bug (!!!) in
a condition's grouping. Every other use of Allocatable.test(Hint) groups it the
same way as it is indented, so move the parentheses to agree with that
grouping.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103869
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Evan Cheng [Sat, 15 May 2010 07:53:37 +0000 (07:53 +0000)]
Model 128-bit vld lane with REG_SEQUENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103868
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Jakob Stoklund Olesen [Sat, 15 May 2010 06:09:08 +0000 (06:09 +0000)]
Calculate liveness on the fly for local registers.
When working top-down in a basic block, substituting physregs for virtregs, the use-def chains are kept up to date. That means we can recognize a virtreg kill by the use-def chain becoming empty.
This makes the fast allocator independent of incoming kill flags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103866
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Nick Lewycky [Sat, 15 May 2010 04:26:25 +0000 (04:26 +0000)]
Teach the always inliner to release its inline cost estimates, like the basic
inliner did in r103653. Why does the always inliner even bother with cost
estimates anyways?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103858
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Nick Lewycky [Sat, 15 May 2010 03:41:58 +0000 (03:41 +0000)]
Clean up, no functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103857
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Jakob Stoklund Olesen [Sat, 15 May 2010 02:52:58 +0000 (02:52 +0000)]
Add reg_nodbg_iterator
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103856
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Evan Cheng [Sat, 15 May 2010 02:20:21 +0000 (02:20 +0000)]
v4i64 and v8i64 are only synthesizable when NEON is available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103855
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Evan Cheng [Sat, 15 May 2010 02:18:07 +0000 (02:18 +0000)]
Allow TargetLowering::getRegClassFor() to be called on illegal types. Also
allow target to override it in order to map register classes to illegal
but synthesizable types. e.g. v4i64, v8i64 for ARM / NEON.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103854
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Evan Cheng [Sat, 15 May 2010 01:36:29 +0000 (01:36 +0000)]
Model 64-bit lane vld with REG_SEQUENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103851
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Evan Cheng [Sat, 15 May 2010 01:35:44 +0000 (01:35 +0000)]
A partial re-def instruction may be a copy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103850
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Evan Cheng [Fri, 14 May 2010 23:21:14 +0000 (23:21 +0000)]
Teach two-address pass to do some coalescing while eliminating REG_SEQUENCE
instructions.
e.g.
%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1027<def> = EXTRACT_SUBREG %reg1026, 6
%reg1028<def> = EXTRACT_SUBREG %reg1026<kill>, 5
...
%reg1029<def> = REG_SEQUENCE %reg1028<kill>, 5, %reg1027<kill>, 6, %reg1028, 7, %reg1027, 8, %reg1028, 9, %reg1027, 10, %reg1030<kill>, 11, %reg1032<kill>, 12
After REG_SEQUENCE is eliminated, we are left with:
%reg1026<def> = VLDMQ %reg1025<kill>, 260, pred:14, pred:%reg0
%reg1029:6<def> = EXTRACT_SUBREG %reg1026, 6
%reg1029:5<def> = EXTRACT_SUBREG %reg1026<kill>, 5
The regular coalescer will not be able to coalesce reg1026 and reg1029 because it doesn't
know how to combine sub-register indices 5 and 6. Now 2-address pass will consult the
target whether sub-registers 5 and 6 of reg1026 can be combined to into a larger
sub-register (or combined to be reg1026 itself as is the case here). If it is possible,
it will be able to replace references of reg1026 with reg1029 + the larger sub-register
index.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103835
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Dan Gohman [Fri, 14 May 2010 23:01:02 +0000 (23:01 +0000)]
Add some comments about undef.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103834
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Evan Cheng [Fri, 14 May 2010 22:54:52 +0000 (22:54 +0000)]
Model VST*_UPD and VST*oddUPD pair with REG_SEQUENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103833
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Dan Gohman [Fri, 14 May 2010 22:53:18 +0000 (22:53 +0000)]
Fast ISel trivially coalesces away no-op casts, so check for this when
setting kill flags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103832
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Jakob Stoklund Olesen [Fri, 14 May 2010 22:40:43 +0000 (22:40 +0000)]
Don't bother spilling before a return
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103831
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Jakob Stoklund Olesen [Fri, 14 May 2010 22:40:40 +0000 (22:40 +0000)]
RegAllocLocal can count copies too
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103830
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Bill Wendling [Fri, 14 May 2010 22:17:42 +0000 (22:17 +0000)]
SystemZ really does mean "has calls" and not just "adjusts stack." Go ahead and
replace the check with the appropriate predicate. Modify the testcase to reflect
the correct code. (It should be saving callee-saved registers on the stack
allocated by the calling fuction.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103829
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Jakob Stoklund Olesen [Fri, 14 May 2010 22:02:56 +0000 (22:02 +0000)]
Track allocatable instead of reserved regs, and never take an unallocatable hint.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103828
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