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211 Commits

Author SHA1 Message Date
Nick Lewycky
1a54547335 Don't crash on multiple return value with no obvious inserted value. 
Fixes PR4314.

llvm-svn: 73007
 2009-06-06 23:13:08 +00:00
Nick Lewycky
3dd0d690f3 Use Operands.data() instead of &Operands[0] where Operands is a potentially 
empty SmallVector.

llvm-svn: 72512
 2009-05-28 04:08:10 +00:00
Duncan Sands
3c115770e7 Factorize out a concept - no functionality change. 
llvm-svn: 67454
 2009-03-21 21:27:31 +00:00
Duncan Sands
926d062a48 Don't load values out of global constants with weak 
linkage: the value may be replaced with something
different at link time.  (Frontends that want to
allow values to be loaded out of weak constants can
give their constants weak_odr linkage).

llvm-svn: 67407
 2009-03-20 21:53:29 +00:00
Rafael Espindola
0aba6c9435 Add the private linkage. 
llvm-svn: 62279
 2009-01-15 20:18:42 +00:00
Chris Lattner
fa0c0e19f6 Fix PR3325, a miscompilation of invokes by IPSCCP. Patch by Jay Foad! 
llvm-svn: 62244
 2009-01-14 21:01:16 +00:00
Devang Patel
b6d277da6c Fix unused variable warnings. 
llvm-svn: 59778
 2008-11-21 01:52:59 +00:00
Nick Lewycky
f393d56364 Replace explicit loop with utility function. 
llvm-svn: 58593
 2008-11-03 03:49:14 +00:00
Dan Gohman
e1f9be27bc Tidy up several unbeseeming casts from pointer to intptr_t. 
llvm-svn: 55779
 2008-09-04 17:05:41 +00:00
Chris Lattner
9f10b57760 improve encapsulation of the BBExecutable set. 
llvm-svn: 55271
 2008-08-23 23:39:31 +00:00
Chris Lattner
15f29cad83 Switch an assortment of maps, sets and vectors to more efficient versions, 
patch contributed by m-s!

llvm-svn: 55270
 2008-08-23 23:36:38 +00:00
Bill Wendling
bebfe7b7fc Temporarily revert r54792. It's causing an ICE during bootstrapping. 
llvm-svn: 54804
 2008-08-14 23:05:24 +00:00
Devang Patel
8aa62f7dfa Use DenseMap. Patch by Pratik Solanki. 
llvm-svn: 54792
 2008-08-14 21:31:10 +00:00
Dan Gohman
374d9328b7 Fix SCCP's handling of struct value loads and stores. SCCP doesn't 
track individual leaf values in such cases, so it needs to treat
struct values as normal values in this case.

llvm-svn: 54760
 2008-08-13 21:22:48 +00:00
Dan Gohman
6564581be0 Enable first-class aggregates support. 
Remove the GetResultInst instruction. It is still accepted in LLVM assembly
and bitcode, where it is now auto-upgraded to ExtractValueInst. Also, remove
support for return instructions with multiple values. These are auto-upgraded
to use InsertValueInst instructions.

The IRBuilder still accepts multiple-value returns, and auto-upgrades them
to InsertValueInst instructions.

llvm-svn: 53941
 2008-07-23 00:34:11 +00:00
Dan Gohman
fcc6f11fc3 Tidy up some commments and use the getAggregateOperand and 
getInsertedValueOperand accessors. Thanks Matthijs!

llvm-svn: 52543
 2008-06-20 16:41:17 +00:00
Dan Gohman
3968f90c4c Fix the conditions under which SCCP should examine insertvalue 
instructions. Thanks to Matthijs Kooijman for pointing this out!

llvm-svn: 52542
 2008-06-20 16:39:44 +00:00
Dan Gohman
b4ee9dfc2d Teach SCCP about insertvalue and extractvalue, and about 
propagating constants across aggregate return values when
insertvalue and extractvalue are used.

llvm-svn: 52520
 2008-06-20 01:15:44 +00:00
Chris Lattner
bde5fd685d Fix PR2358 by resolving calls with undef arguments to overdefined. 
llvm-svn: 51535
 2008-05-24 03:59:33 +00:00
Dale Johannesen
da54faec0c Allow for switch with no cases. Was causing fault 
in gcc.dg/pr27531-1.c.

llvm-svn: 51464
 2008-05-23 01:01:31 +00:00
Dan Gohman
bab18cae46 Clean up the use of static and anonymous namespaces. This turned up 
several things that were neither in an anonymous namespace nor static
but not intended to be global.

llvm-svn: 51017
 2008-05-13 00:00:25 +00:00
Chris Lattner
b700ffd977 Fix various DOUTs to not call the extremely expensive Value::getName() 
method.  DOUT statements are disabled when assertions are off, but the
side effects of getName() are still evaluated.  Just call getNameSTart,
which is close enough and doesn't cause heap traffic.

llvm-svn: 50958
 2008-05-11 01:55:59 +00:00
Chris Lattner
858c3299c1 Simplify code by using SwitchInst::findCaseValue instead of reimplementing it. 
llvm-svn: 50957
 2008-05-10 23:56:54 +00:00
Nick Lewycky
1f831c0f57 Remove 'unwinds to' support from mainline. This patch undoes r47802 r47989 
r48047 r48084 r48085 r48086 r48088 r48096 r48099 r48109 and r48123.

llvm-svn: 50265
 2008-04-25 16:53:59 +00:00
Chris Lattner
a646a59205 code restructuring, not functionality change. 
llvm-svn: 50203
 2008-04-24 00:21:50 +00:00
Chris Lattner
10ffed0ed0 Don't replace multiple result of calls with undef, 
sccp tracks getresult values, not call values in this
case.

llvm-svn: 50202
 2008-04-24 00:19:54 +00:00
Chris Lattner
8c6e641cf4 code cleanup, no functionality change. 
llvm-svn: 50201
 2008-04-24 00:16:28 +00:00
Chris Lattner
721ea7ca10 Rewrite multiple return value handling in SCCP. Before, the -sccp pass 
would turn every getresult instruction into undef.  This helps with
rdar://5778210

llvm-svn: 50140
 2008-04-23 05:38:20 +00:00
Devang Patel
47b4a18b75 Be conservative if getresult operand is neither call nor invoke. 
llvm-svn: 49430
 2008-04-09 15:58:24 +00:00
Gabor Greif
6c6b8a57f3 API changes for class Use size reduction, wave 1. 
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277
 2008-04-06 20:25:17 +00:00
Dan Gohman
a363ba510c Don't include <map> in Pass.h, which doesn't need it. This requires 
adding <map> to many files that actually do need it.

llvm-svn: 48667
 2008-03-21 23:51:57 +00:00
Devang Patel
e163bda565 Add TODO reminder. 
llvm-svn: 48227
 2008-03-11 17:32:05 +00:00
Devang Patel
6c189c16b5 Initial multiple return values support. 
llvm-svn: 48210
 2008-03-11 05:46:42 +00:00
Nick Lewycky
8626cfb86d SCCP also needs to be taught to follow unwind_to 
llvm-svn: 48109
 2008-03-09 09:44:38 +00:00
Nick Lewycky
e13db2c263 Not all users of a BB are Instructions any more. 
llvm-svn: 48047
 2008-03-08 07:48:41 +00:00
Anton Korobeynikov
fd6b669c80 Make Transforms to be 4.3 warnings-clean 
llvm-svn: 47371
 2008-02-20 11:26:25 +00:00
Chris Lattner
7250586ec9 Fix PR1938 by forcing the code that uses an undefined value to branch one 
way or the other.  Rewriting the code itself prevents subsequent analysis
passes from making contradictory conclusions about the code that could 
cause an infeasible path to be made feasible.

llvm-svn: 46427
 2008-01-28 00:32:30 +00:00
Chris Lattner
ad9a6ccb83 Remove attribution from file headers, per discussion on llvmdev. 
llvm-svn: 45418
 2007-12-29 20:36:04 +00:00
Christopher Lamb
dfad5f19b4 Disable null pointer folding transforms for non-generic address spaces. This should probably be a target-specific predicate based on address space. That way for targets where this isn't applicable the predicate can be optimized away. 
llvm-svn: 45403
 2007-12-29 07:56:53 +00:00
Dan Gohman
30ba45b569 Use empty() member functions when that's what's being tested for instead 
of comparing begin() and end().

llvm-svn: 42585
 2007-10-03 19:26:29 +00:00
Duncan Sands
4b390d541e Place SCCPSolver also in the anonymous namespace. This 
pacifies g++-4.2.

llvm-svn: 40089
 2007-07-20 08:56:21 +00:00
Devang Patel
6e8f1aa332 Fix PR1431 
Test case at Transformations/SCCP/2007-05-16-InvokeCrash.ll

llvm-svn: 37185
 2007-05-17 22:10:15 +00:00
Nick Lewycky
c2306ff5b4 Fix typo in comment. 
llvm-svn: 36873
 2007-05-06 13:37:16 +00:00
Devang Patel
cd45427a87 Drop 'const' 
llvm-svn: 36662
 2007-05-03 01:11:54 +00:00
Devang Patel
8ee9065162 Use 'static const char' instead of 'static const int'. 
Due to darwin gcc bug, one version of darwin linker coalesces
static const int, which defauts PassID based pass identification.

llvm-svn: 36652
 2007-05-02 21:39:20 +00:00
Devang Patel
38a66bc82e Do not use typeinfo to identify pass in pass manager. 
llvm-svn: 36632
 2007-05-01 21:15:47 +00:00
Chris Lattner
022c2bc0c3 fix long lines 
llvm-svn: 36031
 2007-04-14 23:32:02 +00:00
Chris Lattner
758a83d1b0 minor cleanups 
llvm-svn: 34904
 2007-03-04 04:50:21 +00:00
Reid Spencer
55e4e98a2a For PR1195: 
Rename PackedType -> VectorType, ConstantPacked -> ConstantVector, and
PackedTyID -> VectorTyID. No functional changes.

llvm-svn: 34293
 2007-02-15 02:26:10 +00:00
Reid Spencer
8749d297f5 Apply the VISIBILITY_HIDDEN field to the remaining anonymous classes in 
the Transforms library. This reduces debug library size by 132 KB, debug
binary size by 376 KB, and reduces link time for llvm tools slightly.

llvm-svn: 33939
 2007-02-05 23:32:05 +00:00