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Author SHA1 Message Date
Dan Gohman
cc9634d988 Recognize n != 0 ? n : 1 as umax(n, 1). Previously only ULT/UGT/ULE/UGE 
comparisons were recognized for umax, but instcombine canonicalizes
unsigned comparisons with zero to this simpler form.

llvm-svn: 73717
 2009-06-18 20:21:07 +00:00
Owen Anderson
cc8947381f Simplify using mutexes that become no-ops when not in multithreaded mode. 
llvm-svn: 73716
 2009-06-18 20:15:26 +00:00
Anton Korobeynikov
fed9dcc88c Revert IRBuilder CC propagation. Fix SimplifyLibCalls instead. 
llvm-svn: 73715
 2009-06-18 20:05:31 +00:00
Owen Anderson
5d40f51e4e Simplify a lot of code by using a R/W mutex that becomes a no-op when multithreading is disabled. 
llvm-svn: 73714
 2009-06-18 19:10:19 +00:00
Owen Anderson
377fe286ca Use SmartMutex to simplify. 
llvm-svn: 73712
 2009-06-18 18:36:34 +00:00
Owen Anderson
a1d2310ac7 Simplify the SmartMutex implementation a bit. 
llvm-svn: 73711
 2009-06-18 18:29:03 +00:00
Owen Anderson
4760da0a7a Give RWMutex the SmartRWMutex treatment too. 
llvm-svn: 73710
 2009-06-18 18:26:15 +00:00
Owen Anderson
9aaa6b8958 Insert a SmartMutex templated class into the class hierarchy, which takes a template parameter specifying whether this mutex 
should become a no-op when not running in multithreaded mode.  Make sys::Mutex a typedef of SmartMutex<false>, to preserve source compatibility.

llvm-svn: 73709
 2009-06-18 17:53:17 +00:00
Ted Kremenek
e88e953645 Update CMake files to account for new location of Threading.cpp. 
llvm-svn: 73708
 2009-06-18 17:47:09 +00:00
Owen Anderson
a59f91c08d Move Threading.[h|cpp] from Support to System. 
llvm-svn: 73707
 2009-06-18 16:54:52 +00:00
Dan Gohman
fd857b0406 Remove the code from IVUsers that attempted to handle 
casted induction variables in cases where the cast
isn't foldable. It ended up being a pessimization in
many cases. This could be fixed, but it would require
a bunch of complicated code in IVUsers' clients. The
advantages of this approach aren't visible enough to
justify it at this time.

llvm-svn: 73706
 2009-06-18 16:54:06 +00:00
Dan Gohman
dc884a7830 Generalize the zext(trunc(t) & C) instcombine to work even with 
C is not a low-bits mask, and add a similar instcombine for
zext((trunc(t) & C) ^ C).

llvm-svn: 73705
 2009-06-18 16:30:21 +00:00
Dan Gohman
b426c5dd35 Update a comment to reflect the code. 
llvm-svn: 73704
 2009-06-18 16:24:47 +00:00
Owen Anderson
7d2d5c974e Fix the double checked locking in this file too. 
llvm-svn: 73703
 2009-06-18 16:17:42 +00:00
Owen Anderson
a74e3d8a1c As pointed out by Duncan, I accidentally dropped the first MemoryFence of the 
double-checked locking pattern here.

llvm-svn: 73701
 2009-06-18 16:08:27 +00:00
Anton Korobeynikov
82ab724191 Forgot to commit this hunk 
llvm-svn: 73693
 2009-06-18 08:30:57 +00:00
Anton Korobeynikov
e492bc7546 Propagate calling conv for invokes too 
llvm-svn: 73692
 2009-06-18 08:13:56 +00:00
Chris Lattner
47e29d1422 Don't use int8_t, that requires DataTypes.h 
llvm-svn: 73682
 2009-06-18 04:56:53 +00:00
Owen Anderson
f71490c586 Fix build when disable thread support. 
Patch by Howard Su.

llvm-svn: 73680
 2009-06-18 04:44:46 +00:00
Zhongxing Xu
8b992b2a97 include header for uint8_t. 
llvm-svn: 73675
 2009-06-18 04:11:43 +00:00
Nick Lewycky
bd1de19b3f Add braces to clarify if/else structure and remove warning. 
llvm-svn: 73673
 2009-06-18 03:01:42 +00:00
Evan Cheng
82a8ab8a8e - Update register allocation hint after coalescing. This is done by the target since the hint is target dependent. This is important for ARM register pair hints. 
- Register allocator should resolve the second part of the hint (register number) before passing it to the target since it knows virtual register to physical register mapping.
- More fixes to get ARM load / store double word working.

llvm-svn: 73671
 2009-06-18 02:04:01 +00:00
Dale Johannesen
6bffdac70a It looks like nobody is working on PR 4158, so I'm 
adding a check to catch this case at compile time
instead of quietly generating incorrect code.
That will at least let us identify CBE failures
that are not due to this problem.

llvm-svn: 73668
 2009-06-18 01:07:23 +00:00
Dan Gohman
9b236593c3 Fix trailing whitespace from ScalarEvolution::print. 
llvm-svn: 73666
 2009-06-18 00:37:45 +00:00
Bob Wilson
1866500851 ARM unified syntax is not specific to ELF; use it for Darwin, too. 
llvm-svn: 73665
 2009-06-18 00:36:17 +00:00
Dan Gohman
e72fd546a2 Teach ScalarEvolution how to recognize another xor(and(x, C), C) case. 
If C is a single bit and the and gets analyzed as a truncate and
zero-extend, the xor can be represnted as an add.

llvm-svn: 73664
 2009-06-18 00:00:20 +00:00
Dan Gohman
eb8d3f5fd5 Delete unnecessary braces. 
llvm-svn: 73663
 2009-06-17 23:54:37 +00:00
Owen Anderson
00e7ebbc38 Reapply r73647 in a non-broken form. 
llvm-svn: 73662
 2009-06-17 23:49:06 +00:00
Anton Korobeynikov
dbb79a8409 Fix asm string from MOVi16 
llvm-svn: 73661
 2009-06-17 23:43:36 +00:00
Anton Korobeynikov
4e0c3634cc Thumb2 instructions are enabled only in unified assembler mode. 
Emit switch directive for it. I have no idea whether this is
requirement for Darwin or not.

llvm-svn: 73660
 2009-06-17 23:43:18 +00:00
Dan Gohman
1530824138 Instcombine zext(trunc(x) & mask) to x&mask, even if the trunc has 
multiple users.

llvm-svn: 73656
 2009-06-17 23:17:05 +00:00
Owen Anderson
66eb50a125 Use double-checked locking for this lazy initialization. 
llvm-svn: 73653
 2009-06-17 22:53:57 +00:00
Owen Anderson
0e2a78e820 Protect the GC table in Function.cpp 
llvm-svn: 73647
 2009-06-17 22:23:31 +00:00
Anton Korobeynikov
77a0bd41fc Honour calling convention and attributes of Callee by default. 
llvm-svn: 73646
 2009-06-17 22:20:46 +00:00
Owen Anderson
2db8ec3635 Use atomic increment here. 
llvm-svn: 73643
 2009-06-17 22:01:09 +00:00
Owen Anderson
327464c4d3 Thread-safe (and ManagedStatic-ized) LeakDetector! 
llvm-svn: 73642
 2009-06-17 21:56:05 +00:00
Owen Anderson
4874790cb9 Guard mutation of the timing info global. 
llvm-svn: 73639
 2009-06-17 21:28:54 +00:00
Owen Anderson
a4471607bc We need to use double-checked locking for lazy initialization in this case when running multithreaded. 
llvm-svn: 73636
 2009-06-17 21:16:20 +00:00
Stefanus Du Toit
bbf53428f9 Fix link to BasicBlock doxygen documentation in Programmer's Manual 
llvm-svn: 73635
 2009-06-17 21:12:26 +00:00
Lang Hames
5c64015a56 VNInfo cleanup. 
llvm-svn: 73634
 2009-06-17 21:01:20 +00:00
Dan Gohman
50b7d0d843 Add -disable-output to a bunch of tests that don't care about the output. 
llvm-svn: 73633
 2009-06-17 20:56:26 +00:00
Dale Johannesen
26f0dd9021 This fixes a bug introduced in 72661, which can 
move loads back past a check that the load address
is valid, see new testcase.  The test that went
in with 72661 has exactly this case, except that
the conditional it's moving past is checking
something else; I've settled for changing that
test to reference a global, not a pointer.  It
may be possible to scan all the tests you pass and
make sure none of them are checking any component
of the address, but it's not trivial and I'm not
trying to do that here.

llvm-svn: 73632
 2009-06-17 20:48:23 +00:00
Owen Anderson
b43a8ba8e5 Factor out some common code. 
llvm-svn: 73631
 2009-06-17 20:43:39 +00:00
Owen Anderson
f8776799ec Add an RAII ScopedWriter, which allows one to acquire a writer lock for the duration of a scope. Simplify a lot of uses of 
writer locks in Constants.cpp by using it.

llvm-svn: 73630
 2009-06-17 20:34:43 +00:00
Owen Anderson
3bf7bd1297 Simplify the locking on the Constants tables, and make it more efficient, by pushing it into the ValueMap from the callers. 
Document those ValueMap functions that are _not_ locked, so that callers are aware that they need to do the locking themselves.

llvm-svn: 73628
 2009-06-17 20:10:08 +00:00
Torok Edwin
09a9b85420 Add debug message about non-local loads being clobbered. 
llvm-svn: 73625
 2009-06-17 18:48:18 +00:00
Owen Anderson
fedb566872 Type safety for Constants.cpp! Some of this is temporary, as I'm planning to push some of the R/W locking into FoldingSet. 
llvm-svn: 73624
 2009-06-17 18:40:29 +00:00
Anton Korobeynikov
7fd29c57a8 Initial support for some Thumb2 instructions. 
Patch by Viktor Kutuzov and Anton Korzh from Access Softek, Inc.

llvm-svn: 73622
 2009-06-17 18:13:58 +00:00
Dan Gohman
c7dfa0d7c0 Update comments to use doxygen syntax. 
llvm-svn: 73621
 2009-06-17 17:51:33 +00:00
Owen Anderson
d7312aff32 Protect the ValueHandle table. 
llvm-svn: 73620
 2009-06-17 17:36:57 +00:00