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32 Commits

Author SHA1 Message Date
David Blaikie
46a9f016c5 More dead code removal (using -Wunreachable-code) 
llvm-svn: 148578
 2012-01-20 21:51:11 +00:00
Michael J. Spencer
447762da85 Merge System into Support. 
llvm-svn: 120298
 2010-11-29 18:16:10 +00:00
Jeffrey Yasskin
735b0ae247 Fix memcheck-found leaks: one false positive from using new[], and one true 
positive where pointers would be leaked on llvm_shutdown.

llvm-svn: 97759
 2010-03-04 22:15:01 +00:00
David Greene
033d65581d Do some cleanups suggested by Chris. 
llvm-svn: 87034
 2009-11-12 21:49:55 +00:00
David Greene
81eb42d8ca Make FixedStackPseudoSourceValue a first-class PseudoSourceValue by 
making it visible to clients and adding LLVM-style cast capability.
This will be used by AsmPrinter to determine when to emit spill comments
for an instruction.

llvm-svn: 87019
 2009-11-12 20:25:07 +00:00
Evan Cheng
ea68c7c9a8 Add PseudoSourceValue::mayAlias. It returns true if the object can ever alias any LLVM IR value. 
llvm-svn: 85762
 2009-11-01 23:50:04 +00:00
Chris Lattner
0997991252 pseudosourcevalue is also still using getGlobalContext(), so it isn't 
thread safe either.

llvm-svn: 85253
 2009-10-27 17:02:08 +00:00
Nick Lewycky
974e12b2d3 Remove includes of Support/Compiler.h that are no longer needed after the 
VISIBILITY_HIDDEN removal.

llvm-svn: 85043
 2009-10-25 06:57:41 +00:00
Nick Lewycky
02d5f77d26 Remove VISIBILITY_HIDDEN from class/struct found inside anonymous namespaces. 
Chris claims we should never have visibility_hidden inside any .cpp file but
that's still not true even after this commit.

llvm-svn: 85042
 2009-10-25 06:33:48 +00:00
Evan Cheng
f0236e011e Spill slots cannot alias. 
llvm-svn: 84432
 2009-10-18 19:58:47 +00:00
Evan Cheng
0e9d9ca855 -Revert parts of 84326 and 84411. Distinquishing between fixed and non-fixed 
stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot 
move above a store of spill slot #2. 
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.

llvm-svn: 84424
 2009-10-18 18:16:27 +00:00
Evan Cheng
8759585aba Revert 84315 for now. Re-thinking the patch. 
llvm-svn: 84321
 2009-10-17 07:53:04 +00:00
Evan Cheng
0818d87ed1 Rename getFixedStack to getStackObject. The stack objects represented are not 
necessarily fixed. Only those will negative frame indices are "fixed."

llvm-svn: 84315
 2009-10-17 06:22:26 +00:00
Duncan Sands
9ed7b16bf3 Introduce and use convenience methods for getting pointer types 
where the element is of a basic builtin type.  For example, to get
an i8* use getInt8PtrTy.

llvm-svn: 83379
 2009-10-06 15:40:36 +00:00
Dan Gohman
c0353bfff5 Give MachineMemOperand an operator<<, factoring out code from 
two different places for printing MachineMemOperands.

Drop the virtual from Value::dump and instead give Value a
protected virtual hook that can be overridden by subclasses
to implement custom printing. This lets printing be more
consistent, and simplifies printing of PseudoSourceValue
values.

llvm-svn: 82599
 2009-09-23 01:33:16 +00:00
Owen Anderson
55f1c09e31 Push LLVMContexts through the IntegerType APIs. 
llvm-svn: 78948
 2009-08-13 21:58:54 +00:00
Torok Edwin
fbcc663cbf llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable. 
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640
 2009-07-14 16:55:14 +00:00
Torok Edwin
56d0659726 assert(0) -> LLVM_UNREACHABLE. 
Make llvm_unreachable take an optional string, thus moving the cerr<< out of
line.
LLVM_UNREACHABLE is now a simple wrapper that makes the message go away for
NDEBUG builds.

llvm-svn: 75379
 2009-07-11 20:10:48 +00:00
Dan Gohman
4f2fea1a21 Now that errs() is properly non-buffered, there's no need to 
explicitly flush it.

llvm-svn: 67526
 2009-03-23 15:57:19 +00:00
Dan Gohman
ee1cd1781a Have PseudoSourceValue override Value::dump, so that it works 
on PseudoSourceValue values. This also fixes a FIXME in
lib/VMCode/AsmWriter.cpp.

llvm-svn: 60507
 2008-12-03 21:37:21 +00:00
Dan Gohman
a5b15bd09b Remove the std::ostream form of PseudoSourceValue's print, 
which isn't needed anymore.

llvm-svn: 55419
 2008-08-27 16:19:44 +00:00
Chris Lattner
a078d83e17 simplify PseudoSourceValue printing a bit. Unnest all of PseudoSourceValue.cpp from the llvm namespace. 
llvm-svn: 55293
 2008-08-24 20:37:32 +00:00
Evan Cheng
72e7d91591 Print PseudoSourceValue. 
llvm-svn: 55291
 2008-08-24 18:51:20 +00:00
Dan Gohman
09b0448dbc Enable rematerialization of constants using AliasAnalysis::pointsToConstantMemory, 
and knowledge of PseudoSourceValues. This unfortunately isn't sufficient to allow
constants to be rematerialized in PIC mode -- the extra indirection is a
complication.

llvm-svn: 54000
 2008-07-25 00:02:30 +00:00
Dan Gohman
793357b115 Fix edito in the PseudoSourceValue name list. 
llvm-svn: 53562
 2008-07-14 17:45:47 +00:00
Dan Gohman
02c7c6cb33 Include a frame index in the "fixed stack" pseudo source value 
instead of using the frame index for the SVOffset, which was
inconsistent.

llvm-svn: 53486
 2008-07-11 22:44:52 +00:00
Dan Gohman
bdc24adaaf A quick nm audit turned up several fixed tables and objects that were 
marked read-write. Use const so that they can be allocated in a
read-only segment.

llvm-svn: 48800
 2008-03-25 21:45:14 +00:00
Dan Gohman
7b5d916c98 From Chris' review: fix 80 column violations 
llvm-svn: 46961
 2008-02-11 18:57:43 +00:00
Dan Gohman
16d4bc3dc0 Follow Chris' suggestion; change the PseudoSourceValue accessors 
to return pointers instead of references, since this is always what
is needed.

llvm-svn: 46857
 2008-02-07 18:41:25 +00:00
Dan Gohman
2d489b5081 Re-apply the memory operand changes, with a fix for the static 
initializer problem, a minor tweak to the way the
DAGISelEmitter finds load/store nodes, and a renaming of the
new PseudoSourceValue objects.

llvm-svn: 46827
 2008-02-06 22:27:42 +00:00
Evan Cheng
27b32b87ed Revert 46556 and 46585. Dan please fix the PseudoSourceValue problem and re-commit. 
llvm-svn: 46623
 2008-01-31 21:00:00 +00:00
Dan Gohman
02b6792dd4 Add a new PseudoSourceValue class, which will be used to help track 
memory reference information in the backend. Most of this was written by
Florian Brander, cleanup and updating to TOT by me.

llvm-svn: 46556
 2008-01-30 16:35:31 +00:00