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Author SHA1 Message Date
Dan Gohman
7c6a63aea3 TBAA-enable ArgumentPromotion. 
llvm-svn: 118804
 2010-11-11 18:09:32 +00:00
Dan Gohman
d88f1d63ac Add a FIXME comment. 
llvm-svn: 118803
 2010-11-11 18:08:43 +00:00
Jim Grosbach
abf0e10ea0 Encoding of destination fixup for ARM branch and conditional branch 
instructions.

llvm-svn: 118801
 2010-11-11 18:04:49 +00:00
Andrew Trick
5e77065d78 Check TRI->getReservedRegs because other allocators do it. Even though 
it makes no sense for allocation_order iterators to visit reserved regs.
The inline spiller depends on AliasAnalysis.
Manage the Query state to avoid uninitialized or stale results.

llvm-svn: 118800
 2010-11-11 17:46:29 +00:00
Dan Gohman
7c06994452 Add comments. 
llvm-svn: 118799
 2010-11-11 17:33:39 +00:00
Rafael Espindola
f7b3bb84e8 Make AliasedSymbol able to handle MCTargetExpr. They can get here if 
a weakref is used with a VariantKind.

llvm-svn: 118798
 2010-11-11 17:24:43 +00:00
Chris Lattner
3514fa6b11 add pr# 
llvm-svn: 118797
 2010-11-11 17:17:56 +00:00
Jim Grosbach
cfc32e3b5a Encoding for ARM LDRSH_POST. 
llvm-svn: 118794
 2010-11-11 16:55:29 +00:00
Rafael Espindola
f1ee36c3a3 Fix the symbol index of weak references. Also make RecordRelocation a bit 
easier to read by having const references to the symbol, aliased symbol and
renamed symbol.

llvm-svn: 118793
 2010-11-11 16:48:11 +00:00
Dan Gohman
503ad44b14 Add brief doxygen comments for AliasResult enum values. 
llvm-svn: 118792
 2010-11-11 16:37:38 +00:00
Dan Gohman
9f805118c3 Include ImmutablePass passes in -debug-pass=Arguments. 
llvm-svn: 118790
 2010-11-11 16:32:17 +00:00
Dan Gohman
8e986f9c2f Remove the memmove->memcpy optimization from CodeGen. MemCpyOpt does this. 
llvm-svn: 118789
 2010-11-11 16:24:49 +00:00
Dan Gohman
01ed16d764 Make Sink tbaa-aware. 
llvm-svn: 118788
 2010-11-11 16:21:47 +00:00
Dan Gohman
4a432aa7bc It's safe to sink some instructions which are not safe to speculatively 
execute. Make Sink's predicate more precise.

llvm-svn: 118787
 2010-11-11 16:20:28 +00:00
NAKAMURA Takumi
5b3bb628fb CMake: Add the new option "LLVM_LIT_ARGS". 
Defaults:
if (MSVC OR XCODE): "-sv --no-progress-bar"
else: "-sv"

llvm-svn: 118776
 2010-11-11 04:09:35 +00:00
Rafael Espindola
5766346831 Remove some explicit arguments to getELFSection. This is 
a leftover from the removal of isExplicit.

llvm-svn: 118774
 2010-11-11 03:40:25 +00:00
Jim Grosbach
8cb10f8def Encoding for ARM LDRSH and LDRSH_PRE. Cannonicalize operand names. 
llvm-svn: 118767
 2010-11-11 01:55:59 +00:00
Jim Grosbach
b86e183a33 Fix encoding of Ra register for ARM smla* instructions. 
llvm-svn: 118761
 2010-11-11 01:27:41 +00:00
Owen Anderson
f2e9cc82db Add support for specifying a PostEncoderMethod, which can perform post-processing after the automated encoding of an instruction. 
Not yet used.

llvm-svn: 118759
 2010-11-11 01:19:24 +00:00
Jim Grosbach
3b13f9013c ARM STRH encoding information. 
llvm-svn: 118757
 2010-11-11 01:09:40 +00:00
Dan Gohman
2ffc9c8de3 Add a testcase which demonstrates alias analysis pass precedence. 
llvm-svn: 118755
 2010-11-11 01:03:30 +00:00
Jakob Stoklund Olesen
e7e1f14d50 Delete SplittingSpiller. It was not being used by anyone, and it is being 
superceded by SplitKit.

llvm-svn: 118754
 2010-11-11 00:52:44 +00:00
Dan Gohman
50936c7c4b It's not necessary to clear out the Size and TBAATag at each of 
these points.

llvm-svn: 118752
 2010-11-11 00:42:22 +00:00
Dan Gohman
b476dc0f55 Set NonLocalDepInfo's Size field to UnknownSize when invalidating 
it, so that it doesn't appear to be a known size.

llvm-svn: 118748
 2010-11-11 00:20:27 +00:00
Jakob Stoklund Olesen
313b78d28e Insert two blank SlotIndexes between basic blocks instead of just one. 
This is the first small step towards using closed intervals for liveness instead
of the half-open intervals we're using now.

We want to be able to distinguish between a SlotIndex that represents a variable
being live-out of a basic block, and an index representing a variable live-in to
its successor.

That requires two separate indexes between blocks. One for live-outs and one for
live-ins.

With this change, getMBBEndIdx(MBB).getPrevSlot() becomes stable so it stays
greater than any instructions inserted at the end of MBB.

llvm-svn: 118747
 2010-11-11 00:19:20 +00:00
Devang Patel
a4eeec4604 Document debuginfo-tests. 
llvm-svn: 118746
 2010-11-11 00:13:39 +00:00
Jakob Stoklund Olesen
3eb4a7b12d Delete unused function. 
llvm-svn: 118743
 2010-11-10 23:56:02 +00:00
Jakob Stoklund Olesen
2f72fda7ef No need to add liveness that's already there. 
llvm-svn: 118742
 2010-11-10 23:56:00 +00:00
Jakob Stoklund Olesen
6a63cbe06d Hook up AliasAnalysis in InlineSpiller. This is used for rematerializing 
constant loads.

llvm-svn: 118741
 2010-11-10 23:55:56 +00:00
Jim Grosbach
2c1d6373ab Move LDM predicate operand encoding into base clase. Add STM missing STM 
encoding bits.

llvm-svn: 118738
 2010-11-10 23:44:32 +00:00
Jim Grosbach
ad037e5ded ARM LDM encoding for the mode (ia, ib, da, db) operand. 
llvm-svn: 118736
 2010-11-10 23:38:36 +00:00
Rafael Espindola
6ee5a9491d Factor some code into WriteSection. 
llvm-svn: 118733
 2010-11-10 23:36:59 +00:00
Jim Grosbach
ef95eee920 Fix ARM encoding of non-return LDM instructions. 
llvm-svn: 118732
 2010-11-10 23:18:49 +00:00
Jim Grosbach
d832c84199 Fix ARM encoding of LDM+Return instruction. 
llvm-svn: 118730
 2010-11-10 23:12:48 +00:00
Dan Gohman
8895f1c5d5 When clearing a non-local pointer dependency cache entry, clear 
the reverse map too. This fixes seflhost build errors.

llvm-svn: 118729
 2010-11-10 22:35:02 +00:00
Rafael Espindola
281431a034 Update the section index map after we add the medatada sections. 
llvm-svn: 118728
 2010-11-10 22:34:07 +00:00
Devang Patel
5520a6fc97 Take care of special characters while creating named MDNode name to hold function specific local variable's info. 
This fixes radar 8653152. I am checking in testcase as a separate check-in.

llvm-svn: 118726
 2010-11-10 22:19:21 +00:00
Rafael Espindola
576f8dd869 Use SectionIndexMap in WriteSymbolTable to make it a little less brittle. 
llvm-svn: 118725
 2010-11-10 22:16:43 +00:00
Dan Gohman
543edf7e84 Factor out the code for computing an AliasAnalysis::Location 
for a given instruction into a helper function.

llvm-svn: 118723
 2010-11-10 21:51:35 +00:00
Rafael Espindola
d3696f41c7 Factor some code into ComputeIndexMap. 
llvm-svn: 118722
 2010-11-10 21:51:05 +00:00
Dan Gohman
aef3e95364 Fully invalidate cached results when a prior query's size or 
type is insufficient for, or incompatible with, the current query.

llvm-svn: 118721
 2010-11-10 21:45:11 +00:00
Nate Begeman
c4fabeabb9 Fix an issue where we tried to turn a v2f32 build_vector into a v4i32 build vector with 2 elts 
llvm-svn: 118720
 2010-11-10 21:35:41 +00:00
Duncan Sands
815e967d98 Reduce the maximum recursion depth, 5 seems pointlessly too much. 
Probably it should just be 1, but compromise with 3.

llvm-svn: 118718
 2010-11-10 20:53:24 +00:00
Dan Gohman
2b4e8302a6 Enhance GVN to do more precise alias queries for non-local memory 
references. For example, this allows gvn to eliminate the load in
this example:

  void foo(int n, int* p, int *q) {
    p[0] = 0;
    p[1] = 1;
    if (n) {
      *q = p[0];
    }
  }

llvm-svn: 118714
 2010-11-10 20:37:15 +00:00
Rafael Espindola
859cfe5bbd Change the String<size> methods to take a fragment instead of a buffer. 
llvm-svn: 118709
 2010-11-10 20:02:59 +00:00
Jakob Stoklund Olesen
00c4d94862 Basic rematerialization during splitting. 
Whenever splitting wants to insert a copy, it checks if the value can be
rematerialized cheaply instead.

Missing features:
- Delete instructions when all uses have been rematerialized.
- Truncate live ranges to the remaining uses after rematerialization.

llvm-svn: 118702
 2010-11-10 19:31:50 +00:00
Andrew Trick
9d60f59b55 RABasic is nearly functionally complete. There are a few remaining 
benchmarks hitting an assertion.
Adds LiveIntervalUnion::collectInterferingVRegs.
Fixes "late spilling" by checking for any unspillable live vregs among
all physReg aliases.

llvm-svn: 118701
 2010-11-10 19:18:47 +00:00
Rafael Espindola
d05bf9ffe0 Use MCSectionELF in places we know we have an ELF section. 
llvm-svn: 118699
 2010-11-10 19:05:07 +00:00
Dan Gohman
efbd98c352 Use getValueOperand() and getPointerOperand() on load and store 
instructions instead of hard-coding operand numbers.

llvm-svn: 118698
 2010-11-10 19:03:33 +00:00
Dan Gohman
04e46fa78b Rename AccessesArguments and AccessesArgumentsReadonly, and rewrite 
their comments.

llvm-svn: 118696
 2010-11-10 18:30:00 +00:00