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6a475e691d
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49026 Commits

Author SHA1 Message Date
Eli Friedman
6a475e691d Update SimplifyCFG for atomic operations. 
This commit includes a mention of the landingpad instruction, but it's not
changing the behavior around it.  I think the current behavior is correct,
though.  Bill, can you double-check that?

llvm-svn: 137691
 2011-08-15 23:59:28 +00:00
Eli Friedman
f0e7c084ea Add comments and test for atomic load/store and mem2reg. 
llvm-svn: 137690
 2011-08-15 23:55:52 +00:00
Devang Patel
00c82827ab Refactor. 
llvm-svn: 137689
 2011-08-15 23:47:24 +00:00
Owen Anderson
2e722e7cd4 Specify a necessary fixed bit for VLD3DUP, and otherwise rearrange the Thumb2 NEON decoding hooks to bring us closer to correctness. 
llvm-svn: 137686
 2011-08-15 23:38:54 +00:00
Bruno Cardoso Lopes
f026c60f3d While I'm here, remove the "_alt" hacks to a series of INSERT_SUBREG and 
also add the AVX versions of the 128-bit patterns

llvm-svn: 137685
 2011-08-15 23:36:51 +00:00
Bruno Cardoso Lopes
1e817d1451 Reorder declarations of vmovmskp* and also put the necessary AVX 
predicate and TB encoding fields. This fix the encoding for the
attached testcase. This fixes PR10625.

llvm-svn: 137684
 2011-08-15 23:36:45 +00:00
Devang Patel
822410da56 Continue to hoist uses of getCompileUnit() up. The goal is to get rid of uses of getCompileUnit(). 
llvm-svn: 137683
 2011-08-15 23:36:40 +00:00
Bill Wendling
3a5b0249c3 In places where it's using "getFirstNonPHI", skip the landingpad instruction if necessary. 
llvm-svn: 137679
 2011-08-15 23:19:54 +00:00
Jim Grosbach
31c0c9a1f6 MCTargetAsmParser target match predicate support. 
Allow a target assembly parser to do context sensitive constraint checking
on a potential instruction match. This will be used, for example, to handle
Thumb2 IT block parsing.

llvm-svn: 137675
 2011-08-15 23:03:29 +00:00
Devang Patel
f1b61abc8c Add a finalize() hook, that'll let DIBuilder construct compile unit lazily. 
llvm-svn: 137673
 2011-08-15 23:00:00 +00:00
Bill Wendling
3016a47ed2 Don't sink the instruction to before a landingpad instruction. 
llvm-svn: 137672
 2011-08-15 22:53:05 +00:00
Devang Patel
e0aa92d509 This is somewhat déjà-vu, but avoid using getCompileUnit() as much as possible. 
llvm-svn: 137668
 2011-08-15 22:24:32 +00:00
Eli Friedman
fdd5480178 Update inter-procedural optimizations for atomic load/store. 
llvm-svn: 137667
 2011-08-15 22:16:46 +00:00
Eli Friedman
36ef5fd140 Update instcombine for atomic load/store. 
llvm-svn: 137664
 2011-08-15 22:09:40 +00:00
Devang Patel
8fe83ecaf3 Refactor. Variables are part of compile unit so let CompileUnit create new variable. 
llvm-svn: 137663
 2011-08-15 22:04:40 +00:00
Eli Friedman
a88908f4e7 Add some comments here because the lack of a check for volatile/atomic here is a bit unusual. 
llvm-svn: 137662
 2011-08-15 21:56:39 +00:00
Bruno Cardoso Lopes
b81c3ed76d Fix PR10656. It's only profitable to use 128-bit inserts and extracts 
when AVX mode is one. Otherwise is just more work for the type
legalizer.

llvm-svn: 137661
 2011-08-15 21:45:54 +00:00
Devang Patel
f5e3a86ea0 There is no need to maintain a set to keep track of variables that use location expressions. In such cases, AT_location attribute's value will be a label. 
llvm-svn: 137659
 2011-08-15 21:43:21 +00:00
Devang Patel
9ea2ce9b7b Fix warning. 
llvm-svn: 137658
 2011-08-15 21:35:16 +00:00
Devang Patel
1113107823 Simplify. Let DbgVariable keep track of variable's DBG_VALUE machine instruction. 
llvm-svn: 137656
 2011-08-15 21:24:36 +00:00
Bill Wendling
a75d2d0416 Duncan pointed out that the LandingPadInst might read memory. (It might also 
write to memory.) Marking it as such makes some checks for immobility go away.

llvm-svn: 137655
 2011-08-15 21:14:31 +00:00
Eli Friedman
b25f5aeda5 Fix llvm::CloneModule to correctly clone globals. Patch per bug report by Simon Moll on llvmdev. 
llvm-svn: 137654
 2011-08-15 21:05:06 +00:00
Eli Friedman
bfebfae6f6 Fix predicates methods on Instruction to handle atomic load/store correctly. 
llvm-svn: 137652
 2011-08-15 21:00:18 +00:00
Eli Friedman
5acfaeab2d Misc analysis passes that need to be aware of atomic load/store. 
llvm-svn: 137650
 2011-08-15 20:54:19 +00:00
Eli Friedman
e18709e5b2 Atomic load/store support in LICM. 
llvm-svn: 137648
 2011-08-15 20:52:09 +00:00
Owen Anderson
42946000dd Enforce the constraint that Rt must be even on LDRD/STRD instructions in ARM mode. Update tests to reflect this fact. 
Patch by James Molloy.

llvm-svn: 137647
 2011-08-15 20:51:32 +00:00
Owen Anderson
f86afc2459 Remove dead classes. 
llvm-svn: 137643
 2011-08-15 20:11:11 +00:00
Bill Wendling
0c8837a1f1 The "landingpad" instruction will never be "trivially" dead. 
llvm-svn: 137642
 2011-08-15 20:10:51 +00:00
Owen Anderson
4854258d9c Fix incorrect encoding of UMAAL and friends. Patch by James Molloy. 
llvm-svn: 137641
 2011-08-15 20:08:25 +00:00
Devang Patel
7e0fc7cf86 Simplify mapping to variable from its abstract variable info. 
When a variable is inlined multiple places, abstract variable keeps name, location, type etc.. info and all other concreate instances of the variable directly refers to abstract variable.

llvm-svn: 137637
 2011-08-15 19:01:20 +00:00
Owen Anderson
cd94fca93d Fix decoding LDRSB and LDRSH in Thumb1 mode. Patch by James Molloy. 
llvm-svn: 137636
 2011-08-15 19:00:06 +00:00
Owen Anderson
894585de33 Fix problems decoding the to/from-lane NEON memory instructions, and add a comprehensive NEON decoding testcase. 
llvm-svn: 137635
 2011-08-15 18:44:44 +00:00
Devang Patel
2b6f546226 Refactor. 
llvm-svn: 137632
 2011-08-15 18:40:16 +00:00
Devang Patel
84b2564244 Refactor. 
llvm-svn: 137631
 2011-08-15 18:35:42 +00:00
Bill Wendling
a8d6570a7a Don't try to sink the landingpad instruction. It's immobile. 
llvm-svn: 137629
 2011-08-15 18:23:40 +00:00
Bill Wendling
8cc5168e87 The landingpad instruction isn't loop-invariant. 
llvm-svn: 137628
 2011-08-15 18:22:49 +00:00
Bill Wendling
b0c5dd0ebd Mark the SCC as "might unwind" if we run into a 'resume' instruction. 
llvm-svn: 137627
 2011-08-15 18:22:00 +00:00
Bill Wendling
a5dc9de3c4 Skip the insertion iterator past the landingpad instruction if there. 
llvm-svn: 137626
 2011-08-15 18:21:07 +00:00
Devang Patel
1b73744344 Refactor. Global variables are part of compile unit so let CompileUnit create new global variable. 
llvm-svn: 137621
 2011-08-15 17:57:41 +00:00
Devang Patel
ec9a83977b Refactor. A subprogram is part of compile unit so let CompileUnit construct new subprogram. 
llvm-svn: 137618
 2011-08-15 17:24:54 +00:00
Jim Grosbach
b2b673661a Update comment to reflect MC target machine refactor. 
llvm-svn: 137615
 2011-08-15 16:52:24 +00:00
Bill Wendling
e4ea267524 Add inlining for the new EH scheme. 
This builds off of the current scheme, but instead of llvm.eh.exception and
llvm.eh.selector, it uses the landingpad instruction. And instead of
llvm.eh.resume, it uses the resume instruction.

Because of the invariants in the landing pad instruction, a lot of code that's
currently needed to find the appropriate intrinsic calls for an invoke
instruction won't be needed once we go to the new EH scheme. The "FIXME"s tell
us what to remove after we switch.

llvm-svn: 137576
 2011-08-14 08:01:36 +00:00
Nick Lewycky
e020632f7e This transform is not safe. Thanks to Eli for pointing that out! 
llvm-svn: 137575
 2011-08-14 04:51:49 +00:00
Nick Lewycky
0326303a7a Don't attempt to add 'nsw' when intermediate instructions had no such guarantee. 
llvm-svn: 137572
 2011-08-14 03:41:33 +00:00
Nick Lewycky
b6a9488190 Teach instcombine to preserve the nsw bit by doing an after-the-fact analysis 
when combining add and sub instructions. Patch by Pranav Bhandarkar!

llvm-svn: 137570
 2011-08-14 01:45:19 +00:00
NAKAMURA Takumi
89d778eb47 EE: Provide the symbol "lseek64" explicitly with <unistd.h> on Linux glibc. 
With libcxx, it seems <unistd.h> would not be provided. Thanks to Ryuta Suzuki.

llvm-svn: 137567
 2011-08-14 00:34:04 +00:00
Nadav Rotem
9a776ed9cd Fix PR 10635. When generating integer constants, the constant element type may 
be illegal, even if the requested vector type is legal. Testcase is one of the
disabled ARM tests in the vector-select patch.

llvm-svn: 137562
 2011-08-13 20:31:45 +00:00
Bob Wilson
90799621b3 Expand VMOVQQQQ pseudo instructions. 
Apparently we never added code to expand these pseudo instructions, and in
over a year, no one has noticed.  Our register allocator must be awesome!

llvm-svn: 137551
 2011-08-13 05:14:55 +00:00
Nick Lewycky
5b5b31917d Remove the last improper use of getGlobalContext() from LLVM. 
This caused a race condition where a thread calls ~LLVMContextImpl which calls
Module::dropAllReferences which calls begin() on an empty ilist that would
create the sentinel, which racily accesses the global context.

This can not be fixed by locking inside createSentinel because the lock would
need to be shared with all users of the global context, including those that
reside outside LLVM's own code.

llvm-svn: 137546
 2011-08-13 01:04:44 +00:00
Eli Friedman
baf0f69f9a Move "atomic" and "volatile" designations on instructions after the opcode 
of the instruction.

Note that this change affects the existing non-atomic load and store
instructions; the parser now accepts both forms, and the change is noted
in the release notes.

llvm-svn: 137527
 2011-08-12 22:50:01 +00:00