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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Daniel Dunbar [Wed, 19 May 2010 06:20:44 +0000 (06:20 +0000)]
MC/X86: Lower MOV{8,16,32,64}{rm,mr} to fixed-register forms, as appropriate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104112
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Evan Cheng [Wed, 19 May 2010 06:07:03 +0000 (06:07 +0000)]
Mark pattern-less mayLoad / mayStore instructions neverHasSideEffects. These do not have other un-modeled side effects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104111
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Evan Cheng [Wed, 19 May 2010 06:06:09 +0000 (06:06 +0000)]
Target instruction selection should copy memoperands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104110
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Daniel Dunbar [Wed, 19 May 2010 04:31:36 +0000 (04:31 +0000)]
MC/X86: Strip spurious operands from CALL64r as we do for CALL64pcrel32, to
avoid same prefix byte problem as in r104062.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104108
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Evan Cheng [Wed, 19 May 2010 01:52:25 +0000 (01:52 +0000)]
Mark a few more pattern-less instructions with neverHasSideEffects. This is especially important on instructions like t2LEApcreal which are prime candidate for machine LICM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104102
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Dan Gohman [Wed, 19 May 2010 01:21:34 +0000 (01:21 +0000)]
Add a comment explaining why this code uses Append mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104095
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Evan Cheng [Wed, 19 May 2010 01:08:17 +0000 (01:08 +0000)]
Intrinsics which do a vector compare (results are all zero or all ones) are modeled as icmp / fcmp + sext. This is turned into a vsetcc by dag combine (yes, not a good long term solution). The targets can then isel the vsetcc to the appropriate instruction.
The trouble arises when the result of a vector cmp + sext is then and'ed with all ones. Instcombine will turn it into a vector cmp + zext, dag combiner will miss turning it into a vsetcc and hell breaks loose after that.
Teach dag combine to turn a vector cpm + zest into a vsetcc + and 1. This fixes rdar://
7923010.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104094
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Dan Gohman [Wed, 19 May 2010 00:53:19 +0000 (00:53 +0000)]
Factor out the code for picking integer arithmetic with immediate
opcodes into a helper function. This fixes a few places in the code
which were not properly selecting the 8-bit-immediate opcodes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104091
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Eric Christopher [Wed, 19 May 2010 00:22:04 +0000 (00:22 +0000)]
Add a test to make sure that we're lowering the shift amount correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104090
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Dan Gohman [Tue, 18 May 2010 23:55:57 +0000 (23:55 +0000)]
Add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104089
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Dan Gohman [Tue, 18 May 2010 23:48:08 +0000 (23:48 +0000)]
Fix the predicate which checks for non-sensical formulae which have
constants in registers which partially cancel out their immediate fields.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104088
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Dan Gohman [Tue, 18 May 2010 23:42:37 +0000 (23:42 +0000)]
Factor out the code for recomputing an LSRUse's Regs set after some
of its formulae have been removed into a helper function, and also
teach it how to update the RegUseTracker.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104087
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Bob Wilson [Tue, 18 May 2010 23:19:42 +0000 (23:19 +0000)]
Fix a crash when debugging the coalescer. DebugValue instructions are not
in the coalescer's instruction map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104086
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Dan Gohman [Tue, 18 May 2010 22:51:59 +0000 (22:51 +0000)]
Factor out code for estimating search space complexity into a helper
function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104082
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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
91177308-0d34-0410-b5e6-
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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
91177308-0d34-0410-b5e6-
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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
91177308-0d34-0410-b5e6-
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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
91177308-0d34-0410-b5e6-
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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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