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Author SHA1 Message Date
Dan Gohman
6ebfd72f37 Fix SCEVExpander::visitAddRecExpr so that it remembers the induction variable 
it inserted rather than using LoopInfo::getCanonicalInductionVariable to
rediscover it, since that doesn't work on non-canonical loops. This fixes
infinite recurrsion on such loops; PR7562.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109419 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:28:14 +00:00
Dan Gohman
7da5d3fc65 Handle Values with no value in getCopyFromRegs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109415 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:15:41 +00:00
Owen Anderson
d805bcbb06 Hopefully the last test commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:13:21 +00:00
Dan Gohman
052f000158 Remove LCSSA's bogus dependence on LoopSimplify and LoopSimplify's bogus 
dependence on DominanceFrontier. Instead, add an explicit DominanceFrontier
pass in StandardPasses.h to ensure that it gets scheduled at the right
time.

Declare that loop unrolling preserves ScalarEvolution, and shuffle some
getAnalysisUsages.

This eliminates one LoopSimplify and one LCCSA run in the standard
compile opts sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109413 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:11:16 +00:00
Dan Gohman
572365ec88 Preserve ScalarEvolution in the loop unroller. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109412 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:02:06 +00:00
Owen Anderson
3d0c7231fd Another test commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109411 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:00:59 +00:00
Dan Gohman
38d49ad083 Avoid depending on LCSSA implicitly pulling in LoopSimplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109410 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 18:00:43 +00:00
Owen Anderson
f5b057c1f0 Test commit for new post-commit hooks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109409 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:56:42 +00:00
Dan Gohman
b08ba8824e Fix (at least) quadratic worst-case complexity in DominanceFrontier::splitBlock: 
don't visit all blocks in the function, and don't iterate over the split blocks'
predecessor lists for each block visited.

Also, remove the special-case test for the entry block. Splitting the entry
block isn't common enough to make this worthwhile.

This fixes a major compile-time bottleneck which is exposed now that
LoopSimplify isn't being redundantly run both before and after
DominanceFrontier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109408 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:55:15 +00:00
Eric Christopher
ecfa079206 80-col. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109407 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:53:07 +00:00
Dan Gohman
d2d975233d Avoid copying and recopying a std::set. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109405 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:45:33 +00:00
Dan Gohman
e96a6fe351 Exit a search loop when the search goal is found. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109404 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:41:45 +00:00
Dan Gohman
1deeaa6467 Fix formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109403 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:39:33 +00:00
Dan Gohman
ce0fe5da0d A block dominates itself, by definition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109402 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:38:15 +00:00
Dan Gohman
b7aa26bbdb Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109401 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:37:36 +00:00
Dan Gohman
cb6816dc81 A block dominates itself, by definition. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109400 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:35:32 +00:00
Dan Gohman
a29dbd2dcc Use DominatorTree::properlyDominates instead of dominates with an 
explicit inequality check.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109398 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 17:34:05 +00:00
Dan Gohman
d8939a8225 Add an svn:ignore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109394 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 16:01:15 +00:00
Duncan Sands
b3893b193b Pacify gcc-4.5 which wrongly thinks that RExcess (passed as the Excess parameter) 
may be used uninitialized in the callers of HighRegPressure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109393 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 07:54:17 +00:00
Douglas Gregor
fd2878c8d0 Fix format-specifier warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109391 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 03:55:44 +00:00
Michael J. Spencer
933304ef0c MC: Fix whitespace error from last commit. 
A Visual C++ extension that removes trailing new lines? Seriously?

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109390 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 03:01:28 +00:00
Michael J. Spencer
801a359116 MC: Add WinCOFFObjectWriter implementation. 
Origonal Windows COFF implementation by Nathan Jedffords.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109389 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 02:17:32 +00:00
Lang Hames
6f4e4df100 Factored out a bit of common code to mark VNInfos for deletion. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109388 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 01:49:41 +00:00
Rafael Espindola
84ae206c97 Clone and restore the module being reduced in 
ReduceMiscompilingFunctions::TestFuncs. This makes the test functional
(i.e., no side effects).

Before we would end up using dead functions if a pass decided to remove them
(inline for example) and we would also keep broken functions and conclude that
that a single function was enough to reproduce the bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109387 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-26 00:07:51 +00:00
Benjamin Kramer
82d5baec32 Reduce string trashing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109386 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 23:18:32 +00:00
Nick Lewycky
47c424226f Don't pass -export-dynamic to the linker on Cygwin and MinGW. These platforms 
accept the flag and do nothing but warn about it, cleverly bypassing our
configure-based detection system. Patch by Takumi Nakamura!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109385 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 22:33:04 +00:00
Evan Cheng
e28ed16d25 Add comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109383 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 18:59:43 +00:00
Douglas Gregor
037b5e4128 Remove extraneous semicolon 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109373 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 17:34:42 +00:00
Douglas Gregor
1984d98376 Unbreak CMake build 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 17:10:14 +00:00
Bob Wilson
3f92f73970 Fix crashes when scheduling a CopyToReg node -- getMachineOpcode asserts on 
those.  Radar 8231572.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109367 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-25 05:34:27 +00:00
Eli Friedman
83b4a97060 Revert r109361; it's impossible to write a call with an argument with an 
invalid type.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109365 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 23:06:59 +00:00
Rafael Espindola
b30cdd830b Revert unintended white space change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109364 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 23:05:45 +00:00
Rafael Espindola
97595eb05c Fix a trivial use after free. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109363 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 23:02:11 +00:00
Eli Friedman
13f03f0006 Minor simplification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109362 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 23:00:59 +00:00
Eli Friedman
568463b556 Make the ll parser check that arguments have valid types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 23:00:26 +00:00
Eli Friedman
327f4e4ab2 PR7704: A function is not allowed to return a function; make sure to enforce 
this consistently.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 22:58:04 +00:00
Anton Korobeynikov
cec36f4c11 Hook in GlobalMerge pass 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109359 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 21:52:08 +00:00
Nick Lewycky
de4e94a18c Revert this because we can't clone cyclic MDNodes which are creating during a 
build of llvm-gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 20:54:02 +00:00
Anton Korobeynikov
8c64b9766e Add hook to insert late LLVM=>LLVM passes just before isel 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109354 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 20:48:54 +00:00
Nick Lewycky
fee12b2985 Whether function-local or not, a MDNode may reference a Function in which case 
it needs to be mapped to refer to the function in the new module, not the old
one. Fixes PR7700.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 19:43:25 +00:00
Chris Lattner
1ec9e6a5dc add a new NullablePtr class which makes it more obvious in API 
that a pointer can be null, forcing clients to think about it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109348 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 18:47:46 +00:00
Peter Collingbourne
0cb24daeea Document BUILD_EXAMPLES makefile variable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109346 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 17:54:00 +00:00
Duncan Sands
ffe8c8871a Clarify that if a new value handle is added while dropping value handles 
hanging off a value, then the dropping code will intentionally not drop
it too (since this is almost certainly a bug).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109337 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 12:09:22 +00:00
Bob Wilson
f28dd88611 Change ScheduleDAGInstrs::Defs and ::Uses to be variable-size vectors 
instead of fixed size arrays, so that increasing FirstVirtualRegister to 16K
won't cause a compile time performance regression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109330 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 06:01:53 +00:00
Devang Patel
2f58485fc8 Use current working directory when Dirname is empty. This only happens when absolute source file path is used on compiler command line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109302 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 00:53:22 +00:00
Evan Cheng
70017e44cd Add an ILP scheduler. This is a register pressure aware scheduler that's 
appropriate for targets without detailed instruction iterineries.
The scheduler schedules for increased instruction level parallelism in
low register pressure situation; it schedules to reduce register pressure
when the register pressure becomes high.

On x86_64, this is a win for all tests in CFP2000. It also sped up 256.bzip2
by 16%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109300 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 00:39:05 +00:00
Bruno Cardoso Lopes
3c8e1bee63 Support x86 "eiz" and "riz" pseudo index registers in the assembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-24 00:06:39 +00:00
Jim Grosbach
c2723a57f3 Use the appropriate register class for an i32 when adding ARM::LR to the 
function live in set. This will give us tGPR for Thumb1 and GPR otherwise,
so the copy will be spillable. rdar://8224931

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 23:50:35 +00:00
Jim Grosbach
734738d3bd Remove too-strict assertion. We may want the vreg copy of the physical register 
to be of a different register class. For example, in Thumb1 if the live-in is
a high register, we want the vreg to be a low register. rdar://8224931

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109291 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 23:48:02 +00:00
Matt Fleming
19d92fcae2 Consolidate the ELF section directive tests into a single file as 
suggested by Chris Lattner.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109290 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-23 23:40:41 +00:00