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Author SHA1 Message Date
Douglas Gregor
354d1b85b2 A switch-on-string-literal construct that is a nice alternative to 
cascading "ifs" of strcmps/memcmps.

llvm-svn: 85459
 2009-10-29 00:34:30 +00:00
Chris Lattner
0a782eec94 teach ValueMapper about BlockAddress', making bugpoint a lot more useful. 
llvm-svn: 85458
 2009-10-29 00:31:02 +00:00
Chris Lattner
8f70e602d3 unindent massive blocks, no functionality change. 
llvm-svn: 85457
 2009-10-29 00:28:30 +00:00
Bill Wendling
784d38511f Reverting r85338 for now. It's causing a bootstrap failure on PPC darwin9. 
--- Reverse-merging r85338 into '.':
U    lib/CodeGen/SimpleRegisterCoalescing.cpp
U    lib/CodeGen/SimpleRegisterCoalescing.h

llvm-svn: 85454
 2009-10-29 00:22:16 +00:00
Dan Gohman
3f9f33080a Add indirectbr and blockaddress to the vim syntax highlighting file. 
llvm-svn: 85451
 2009-10-29 00:14:44 +00:00
Dan Gohman
c80f1a4033 Add a hasAddressTaken for BasicBlock. 
llvm-svn: 85449
 2009-10-29 00:09:08 +00:00
Chris Lattner
64ba3671c9 add IRBuilder support for IndirectBr 
llvm-svn: 85445
 2009-10-28 23:25:00 +00:00
Bob Wilson
f13be9d41e Reimplement BranchFolding change to avoid tail merging for a 1 instruction 
common tail, except when the OptimizeForSize function attribute is present.
Radar 7338114.

llvm-svn: 85441
 2009-10-28 22:10:20 +00:00
Dale Johannesen
e6fe8733fd When we generate spill code, then decide we don't need 
to spill after all, we weren't handling 2-instruction
spill sequences correctly (PPC Altivec).  We need to
remove the store in this case.  Removing the other
instruction(s) would be goodness but is not needed for
correctness, and isn't done here.  7331562.

llvm-svn: 85437
 2009-10-28 21:56:18 +00:00
Eric Christopher
d34a37560a Make sure we return the right sized type here. 
llvm-svn: 85436
 2009-10-28 21:32:16 +00:00
Bob Wilson
fc1194919b Revert r85346 change to control tail merging by CodeGenOpt::Level. 
I'm going to redo this using the OptimizeForSize function attribute.

llvm-svn: 85426
 2009-10-28 20:46:46 +00:00
Victor Hernandez
917cf94b22 Extend getMallocArraySize() to determine the array size if the malloc argument is: 
ArraySize * ElementSize
ElementSize * ArraySize
ArraySize << log2(ElementSize)
ElementSize << log2(ArraySize)

Refactor isArrayMallocHelper and delete isSafeToGetMallocArraySize, so that there is only 1 copy of the malloc array determining logic.
Update users of getMallocArraySize() to not bother calling isArrayMalloc() as well.

llvm-svn: 85421
 2009-10-28 20:18:55 +00:00
Viktor Kutuzov
4da1a5215a Fix to pass options from Gold plugin to LTO codegen 
llvm-svn: 85419
 2009-10-28 18:55:55 +00:00
Benjamin Kramer
0613c84aba Teach cmake that mk[sd]temp is defined in stdlib.h on some systems. 
This fixes parallel build with clang on glibc platforms.

llvm-svn: 85414
 2009-10-28 18:37:31 +00:00
David Goodwin
ae4f8e01b0 Make AntiDepReg.h internal. 
llvm-svn: 85412
 2009-10-28 18:29:54 +00:00
Bob Wilson
af37728221 Add a Thumb BRIND pattern. Change the ARM BRIND assembly to separate the 
opcode and operand with a tab.  Check for these instructions in the usual
places.

llvm-svn: 85411
 2009-10-28 18:26:41 +00:00
Evan Cheng
519b231883 fconsts and fconstd are obviously re-materializable. 
llvm-svn: 85410
 2009-10-28 18:19:56 +00:00
Jim Grosbach
e42dc83a9f Cleanup now that frame index scavenging via post-pass is working for ARM and Thumb2. 
llvm-svn: 85406
 2009-10-28 17:33:28 +00:00
Devang Patel
de81397884 llvm.dbg.global_variables do not exist anymore. 
llvm-svn: 85402
 2009-10-28 16:51:52 +00:00
Chris Lattner
a77d439989 add a new 'SetCurrentDebugType' API (requested by Andrew Haley for JIT 
stuff) to programmatically control the current debug flavor.  While 
I'm at it, doxygenate Debug.h and clean it up.

llvm-svn: 85395
 2009-10-28 15:32:19 +00:00
Dan Gohman
7948563977 Don't call SDNode::isPredecessorOf when it isn't necessary. If the load's 
chains have no users, they can't be predecessors of the condition.

llvm-svn: 85394
 2009-10-28 15:28:02 +00:00
Dan Gohman
a43a2a10a1 Simplify this code: if the unfolded load can't be hoisted, just delete 
the new instructions and leave the old one in place.

llvm-svn: 85393
 2009-10-28 15:23:36 +00:00
Edward O'Callaghan
fbe911a40e No newline at end of file. 
llvm-svn: 85390
 2009-10-28 15:04:53 +00:00
Benjamin Kramer
51f925548b Update CMake file. 
llvm-svn: 85389
 2009-10-28 13:29:18 +00:00
Gabor Greif
f47a614c2f use metavariable <result> instead of SSA name %result for consistency 
llvm-svn: 85388
 2009-10-28 13:14:50 +00:00
Gabor Greif
bb9bbb25af ooops, SSA name should not be part of the link 
llvm-svn: 85387
 2009-10-28 13:05:07 +00:00
Gabor Greif
fad893b79c advertise new syntax for unnamed instructions 
and eliminate confusing double-use of SSA names
(work in progress)

llvm-svn: 85385
 2009-10-28 09:21:30 +00:00
Owen Anderson
cfb2c9edeb Treat lifetime begin/end markers as allocations/frees respectively for the 
purposes for GVN/DSE.

llvm-svn: 85383
 2009-10-28 07:05:35 +00:00
Nick Lewycky
0376e34268 Add ABCD, a generalized implementation of the Elimination of Array Bounds 
Checks on Demand algorithm which looks at arbitrary branches instead of loop
iterations. This is GSoC work by Andre Tavares with only editorial changes
applied!

llvm-svn: 85382
 2009-10-28 07:03:15 +00:00
Evan Cheng
16ed5ac7ff Give ARMISD::EH_SJLJ_LONGJMP and EH_SJLJ_SETJMP names. 
llvm-svn: 85381
 2009-10-28 06:55:03 +00:00
Owen Anderson
a2584a4c64 Be more careful about invariance reasoning on "store" queries. Stores still need 
to depend on Ref and ModRef calls within the invariant region.

llvm-svn: 85380
 2009-10-28 06:30:52 +00:00
Evan Cheng
5935e48b96 X86 palignr intrinsics immediate field is in bits. ISel must transform it into bytes. 
llvm-svn: 85379
 2009-10-28 06:30:34 +00:00
Owen Anderson
6cf32f04df Add trivial support for the invariance intrinsics to memdep. This logic is 
purely local for now.

llvm-svn: 85378
 2009-10-28 06:18:42 +00:00
Chris Lattner
1efa0c450a add bitcode reader support for blockaddress. We can now fully 
round trip blockaddress through .ll and .bc files, so add a testcase.

There are still a bunch of places in the optimizer and other places
that need to be updated to work with these constructs, but at least
the basics are in now.

llvm-svn: 85377
 2009-10-28 05:53:48 +00:00
Chris Lattner
075e225442 bitcode writer support for blockaddress. 
llvm-svn: 85376
 2009-10-28 05:24:40 +00:00
Chris Lattner
f605b2e8f9 Previously, all operands to Constant were themselves constant. 
In the new world order, BlockAddress can have a BasicBlock operand.
This doesn't permute much, because if you have a ConstantExpr (or
anything more specific than Constant) we still know the operand has
to be a Constant.

llvm-svn: 85375
 2009-10-28 05:14:34 +00:00
Chris Lattner
920f44db54 doc bug spotted by apinski 
llvm-svn: 85372
 2009-10-28 04:47:06 +00:00
Chris Lattner
c22b8deb03 'static const void *X = &&y' can only be put in the 
readonly section if a reference to the containing function
is valid in the readonly section.

llvm-svn: 85370
 2009-10-28 04:12:16 +00:00
Dan Gohman
9547c094eb Rewrite SelectionDAG::isPredecessorOf to be iterative instead of 
recursive to avoid consuming extraordinary amounts of stack space
when processing tall graphs.

llvm-svn: 85369
 2009-10-28 03:44:30 +00:00
Chris Lattner
e897be280c full asmparser support for blockaddress. We can now do: 
$ llvm-as foo.ll -d -disable-output

which reads and prints the .ll file.  BC encoding is the
next project.  Testcase will go in once that works.

llvm-svn: 85368
 2009-10-28 03:39:23 +00:00
Chris Lattner
a1aa8a092d asmprinter support for BlockAddress. 
llvm-svn: 85367
 2009-10-28 03:38:12 +00:00
Chris Lattner
24819a6e06 when we tear down a module, we need to be careful to 
zap BlockAddress values.

llvm-svn: 85366
 2009-10-28 03:37:35 +00:00
Chris Lattner
3ad05ab257 basic blocks can now have non-instruction users. 
llvm-svn: 85365
 2009-10-28 03:36:44 +00:00
Dan Gohman
076a3b5e25 Teach MachineLICM to unfold loads from constant memory from 
otherwise unhoistable instructions in order to allow the loads
to be hoisted.

llvm-svn: 85364
 2009-10-28 03:21:57 +00:00
Evan Cheng
1babe43881 Use fconsts and fconstd to materialize small fp constants. 
llvm-svn: 85362
 2009-10-28 01:44:26 +00:00
Evan Cheng
4e3bc5efb7 Add a second ValueType argument to isFPImmLegal. 
llvm-svn: 85361
 2009-10-28 01:43:28 +00:00
Dan Gohman
00c9f3e905 Mark dead physregdefs dead immediately. This helps MachineSink and 
MachineLICM and other things which run before LiveVariables is run.

llvm-svn: 85360
 2009-10-28 01:13:53 +00:00
Dan Gohman
a9fb025f00 Allow constants of different types to share constant pool entries 
if they have compatible encodings.

llvm-svn: 85359
 2009-10-28 01:12:16 +00:00
Evan Cheng
1c7dfce330 Remove getIEEEFloatParts and getIEEEDoubleParts. They are not needed. 
llvm-svn: 85358
 2009-10-28 01:08:17 +00:00
Dan Gohman
b20fae567f Update SystemZ to use PSW following the way x86 uses EFLAGS. Besides 
eliminating a use of MVT::Flag, this is needed for an upcoming CodeGen
change.

This unfortunately requires SystemZ to switch to the list-burr
scheduler, in order to handle the physreg defs properly, however
that's what LLVM has available at this time.

llvm-svn: 85357
 2009-10-28 00:55:57 +00:00