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Author SHA1 Message Date
Chris Lattner
f7db1f1a3a Enhance the previous fix for PR4895 to allow more values than just 
simple constants for the true/false value of the select.  We now
do phi translation etc.  This really fixes PR4895 :)

llvm-svn: 82917
 2009-09-27 20:18:49 +00:00
Chris Lattner
0af7f0ceaf implement PR4895, by making FoldOpIntoPhi handle select conditions 
that are phi nodes.  Also tighten up FoldOpIntoPhi to treat constantexpr
operands to phis just like other variables, avoiding moving constantexpr
computations around.

Patch by Daniel Dunbar.

llvm-svn: 82913
 2009-09-27 19:57:57 +00:00
Chris Lattner
80349d5875 avoid copying MCAsmInfo by value, add an (extremely low prio) fixme. 
llvm-svn: 82911
 2009-09-27 19:38:39 +00:00
Tilmann Scheller
a23802520a Use explicit structs instead of std::pair to map callee saved regs to spill slots. 
llvm-svn: 82909
 2009-09-27 17:58:47 +00:00
Dan Gohman
2d607af763 Delete a bogus comment. 
llvm-svn: 82908
 2009-09-27 17:50:44 +00:00
Dan Gohman
89b2635c5c Remove a redundant assert. 
llvm-svn: 82907
 2009-09-27 17:48:37 +00:00
Jeffrey Yasskin
195b24c844 Enable -g with DEBUG_SYMBOLS and --enable-debug-symbols instead of 
DEBUG_RUNTIME.

llvm-svn: 82906
 2009-09-27 17:47:29 +00:00
Dan Gohman
8b4c141d97 Fix SCEVExpander's canonical addrec expansion code to work on loops that 
aren't in canonical loop-simplify form, since it doesn't itself depend
on LoopSimplify. This means handling loops without preheaders and loops
with multiple backedges.

llvm-svn: 82905
 2009-09-27 17:46:40 +00:00
Dan Gohman
3248b82ffc Add dominates and releaseMemory member functions to PostDominatorTree. 
llvm-svn: 82904
 2009-09-27 17:39:12 +00:00
Dan Gohman
641ab5a61e Grab an LLVM Context from an instruction that exists rather than one 
that is deleted in some situations. This fixes a use-after-free.

llvm-svn: 82903
 2009-09-27 16:10:30 +00:00
Dan Gohman
473ca67150 Clarify a comment. 
llvm-svn: 82902
 2009-09-27 15:41:19 +00:00
Dan Gohman
fa43cefae4 Tell ScalarEvolution to forget everything it knows about a loop before 
rotating the loop, since loop rotation is a very significant change.

llvm-svn: 82901
 2009-09-27 15:37:03 +00:00
Dan Gohman
eb9dbb2bd2 Micro-optimize DerivedType::dropAllTypeUses. 
llvm-svn: 82900
 2009-09-27 15:32:21 +00:00
Dan Gohman
16398e3bc0 Instead of testing whether an instruction dominates the loop preheader, 
test whether it properly dominates the loop header. This is equivalent
when the loop has a preheader, and has the advantage of working when
the loop doesn't have a preheader. Since IVUsers doesn't Require
LoopSimplify, the loop isn't guaranteed to have a preheader.

llvm-svn: 82899
 2009-09-27 15:30:00 +00:00
Dan Gohman
b84f5a3421 Add a properlyDominates member function to ScalarEvolution. 
llvm-svn: 82898
 2009-09-27 15:26:03 +00:00
Dan Gohman
9cc0852f45 Remove a redundant #include. 
llvm-svn: 82897
 2009-09-27 15:21:52 +00:00
Torok Edwin
dd5b0b7cda Avoid using mutex locks if not in multithreaded mode by using a SmartScopedMutex 
in RegisterStatistic.

llvm-svn: 82896
 2009-09-27 11:08:03 +00:00
Evan Cheng
ffe6da0734 Enable pre-regalloc load / store multiple pass for Thumb2. 
llvm-svn: 82893
 2009-09-27 09:46:04 +00:00
Chris Lattner
d66a99e60a rename REG -> REGISTER to make it explicit in the doc. <tt>ify some stuff. 
llvm-svn: 82892
 2009-09-27 08:01:44 +00:00
Chris Lattner
80d69b5973 implement and document support for filecheck variables. This 
allows matching and remembering a string and then matching and
verifying that the string occurs later in the file.

Change X86/xor.ll to use this in some cases where the test was
checking for an arbitrary register allocation decision.

llvm-svn: 82891
 2009-09-27 07:56:52 +00:00
Nick Lewycky
676778014b Remove dead code from this function and optimize. Update its corresponding 
LangRef entry too.

llvm-svn: 82890
 2009-09-27 07:55:32 +00:00
Nick Lewycky
d21c325f09 Instruction::clone does not need to take an LLVMContext&. Remove that and 
update all the callers.

llvm-svn: 82889
 2009-09-27 07:38:41 +00:00
Nick Lewycky
6ea218a96b Filecheckify this one test. 
llvm-svn: 82888
 2009-09-27 06:25:05 +00:00
Nick Lewycky
18d420fde7 Leave a pointer to the documentation so that people don't end up change one but 
not the other in the future.

llvm-svn: 82887
 2009-09-27 04:57:35 +00:00
Nick Lewycky
d77653667a Correct the version numbers to match those actually tested for by 
autoconf/AutoRegen.sh.

llvm-svn: 82886
 2009-09-27 04:56:27 +00:00
Nick Lewycky
c54e1a5528 Move the integer type out of 'derived' and into 'primitive'. This permits us 
to explain that derived types are all composed of other types, which primitive
types aren't. Without moving integer out of derived, this wouldn't be true.

Perform a few trivial cleanups; 'i1' went from a link to #t_primitive to
#t_integer (a holdover from when it was a bool type I suppose).

llvm-svn: 82884
 2009-09-27 00:45:11 +00:00
Chris Lattner
b47463f436 remove support for "NoSub" from regex. It seems like a minor optimization 
and makes the API more annoying.  Add a Regex::getNumMatches() method.

llvm-svn: 82877
 2009-09-26 21:27:04 +00:00
Torok Edwin
9d7a492755 Speed up clang-only link, by really linking only clang, and not the unittests 
too.

llvm-svn: 82873
 2009-09-26 20:18:58 +00:00
Evan Cheng
eafd25a098 Remove this test. 
llvm-svn: 82869
 2009-09-26 18:51:37 +00:00
Dan Gohman
0a396aa546 Fix SimplifyLibCalls to transfer attributes from callees rather than 
calls, since direct calls don't always reflect the attributes of their
callees.

llvm-svn: 82867
 2009-09-26 18:10:13 +00:00
Dan Gohman
60964df13d Fix a case where ScalarEvolution was expanding pointer arithmetic 
to inttoptr/ptrtoint unnecessarily.

llvm-svn: 82864
 2009-09-26 16:11:57 +00:00
Duncan Sands
ec5d64fdd5 For the NSWSub support in the builder to actually be useable, 
there need to be corresponding changes to the constant folders,
done in this patch.

llvm-svn: 82862
 2009-09-26 15:35:35 +00:00
Dan Gohman
6899a1cd58 Convert comparisons like (x == infinity) to (x >= infinity) on targets 
where FCMP_OEQ is not legal and FCMP_OGE is, such as x86. 

llvm-svn: 82861
 2009-09-26 15:24:17 +00:00
Duncan Sands
64511993cb Add methods for creating NSW subtraction, as already exists 
for addition.

llvm-svn: 82860
 2009-09-26 15:21:48 +00:00
Dan Gohman
2351c2f8b7 Add a comment describing natural loops. 
llvm-svn: 82859
 2009-09-26 15:09:53 +00:00
Daniel Dunbar
923dc62615 "Update" tests for -disable-if-conversion removal. I think branch.ll should just 
be removed, but I XFAIL'd it for now.

llvm-svn: 82847
 2009-09-26 05:29:36 +00:00
Evan Cheng
48479d0c8f Really remove this option. 
llvm-svn: 82838
 2009-09-26 02:49:49 +00:00
Evan Cheng
1088c37212 Remove a couple of unused command line options. 
llvm-svn: 82837
 2009-09-26 02:45:45 +00:00
Evan Cheng
c4e3168b65 Add comment. 
llvm-svn: 82836
 2009-09-26 02:43:36 +00:00
Evan Cheng
0b55bde4b3 Convert test to filecheck. 
llvm-svn: 82835
 2009-09-26 02:41:17 +00:00
Dan Gohman
7f73a0c1e4 Don't hoist or sink instructions with physreg uses if the physreg is 
allocatable. Even if it doesn't appear to have any defs, it may latter
on after register allocation.

llvm-svn: 82834
 2009-09-26 02:34:00 +00:00
Dan Gohman
8e056e8b9b I put the wrong rdar number in this test. 
llvm-svn: 82829
 2009-09-26 01:11:57 +00:00
Dan Gohman
487152872b Unbreak MachineLICM for instructions that reference RIP on x86-64 too. 
llvm-svn: 82825
 2009-09-25 23:58:45 +00:00
Dan Gohman
d585364b0b Rename ConstantFP's getInf to getInfinity. 
llvm-svn: 82823
 2009-09-25 23:40:21 +00:00
Dan Gohman
ba2b2eb3fe Move MachineMemOperand::getAlignment out of line, to avoid needing 
MathExtras.h in MachineMemOperand.h.

llvm-svn: 82822
 2009-09-25 23:33:20 +00:00
Daniel Dunbar
99d02b7818 Remove unused variable. 
llvm-svn: 82821
 2009-09-25 23:26:56 +00:00
Dan Gohman
d564cd42d9 Transform pow(x, 0.5) to (x == -inf ? inf : fabs(sqrt(x))), which is 
typically faster then doing a general pow.

llvm-svn: 82819
 2009-09-25 23:10:17 +00:00
Dan Gohman
01b2c857ed Add a ConstantFP::getInf utility function for creating infinity ConstantFPs. 
llvm-svn: 82818
 2009-09-25 23:00:48 +00:00
Dan Gohman
7c98ffa2b6 Fix MachineSink to be able to sink instructions that use physical registers 
which have no defs anywhere in the function. In particular, this fixes sinking
of instructions that reference RIP on x86-64, which is currently being modeled
as a register.

llvm-svn: 82815
 2009-09-25 22:53:29 +00:00
Anton Korobeynikov
35078c311e Regenerate 
llvm-svn: 82814
 2009-09-25 22:53:17 +00:00