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Author SHA1 Message Date
Evan Cheng
ec5cb0cdbd Initilize the machine LICM CSE map upon the first time an instruction is hoisted to 
the loop preheader. Add instructions which are already in the preheader block that
may be common expressions of those that are hoisted out. These does get a few more
instructions CSE'ed.

llvm-svn: 85799
 2009-11-02 08:09:49 +00:00
Evan Cheng
e79ff8a615 These are done / no longer care. 
llvm-svn: 85798
 2009-11-02 07:58:25 +00:00
Evan Cheng
532dfd431f Add an entry. 
llvm-svn: 85797
 2009-11-02 07:51:19 +00:00
Chris Lattner
8243ac1abf now that ip sccp *really* subsumes ipcp, remove ipcp again. 
llvm-svn: 85796
 2009-11-02 07:34:29 +00:00
Chris Lattner
f1afb57935 improve IPSCCP to be able to propagate the result of "!mayBeOverridden" 
function to calls of that function, regardless of whether it has local
linkage or has its address taken.  Not escaping should only affect 
whether we make an aggressive assumption about the arguments to a 
function, not whether we can track the result of it.

llvm-svn: 85795
 2009-11-02 07:33:59 +00:00
Evan Cheng
ce9d8e2737 Remove an irrelevant and poorly reduced test case. 
llvm-svn: 85794
 2009-11-02 07:11:54 +00:00
Chris Lattner
c9279a9b4d don't mark the arguments of prototype overdefined, they will never be queried. 
llvm-svn: 85793
 2009-11-02 06:34:04 +00:00
Chris Lattner
9c7e443b07 restore some code I removed in r85788, refactor it into 
a shared place instead of duplicating it 4 times.

llvm-svn: 85792
 2009-11-02 06:28:16 +00:00
Chris Lattner
23f5603692 remove some confused code that dates from when we had 
"multiple return values" but not "first class aggregates"

llvm-svn: 85791
 2009-11-02 06:17:06 +00:00
Chris Lattner
c670f866ce avoid redundant lookups in BBExecutable, and make it a SmallPtrSet. 
llvm-svn: 85790
 2009-11-02 06:11:23 +00:00
Chris Lattner
16b825e51f Use the libanalysis 'ConstantFoldLoadFromConstPtr' function 
instead of reinventing SCCP-specific logic.  This gives us
new powers.

llvm-svn: 85789
 2009-11-02 06:06:14 +00:00
Chris Lattner
32acebedf7 switch the main 'ValueState' map from being an std::map to being 
a DenseMap.  Doing this required being aware of subtle iterator
invalidation issues, but it provides a big speedup.  In a 
release-asserts build, this sped up optimizing 403.gcc from
1.34s -> 0.79s (IPSCCP) and 1.11s -> 0.44s (SCCP).

This commit also conflates in a bunch of general cleanups, sorry.

llvm-svn: 85788
 2009-11-02 05:55:40 +00:00
Evan Cheng
57f7c7c914 Unbreak ARMBaseRegisterInfo::copyRegToReg. 
llvm-svn: 85787
 2009-11-02 04:44:55 +00:00
Chris Lattner
9fc809ca55 fix a bug exposed by moving SRoA earlier which caused a crash building kc++ 
llvm-svn: 85786
 2009-11-02 04:37:17 +00:00
Jim Grosbach
104a2c2b79 Missing bit of universal built + hosted 
llvm-svn: 85785
 2009-11-02 03:46:35 +00:00
Chris Lattner
7e74831e52 only IPSCCP incoming arguments if the function is executable, this fixes 
an assertion on the buildbot.

llvm-svn: 85784
 2009-11-02 03:25:55 +00:00
Chris Lattner
0a8c553eb2 add a new ValueState::getConstantInt() helper, use it to 
simplify some code.

llvm-svn: 85783
 2009-11-02 03:21:36 +00:00
Edward O'Callaghan
ad76c7541b Fix malloc.h is deprecated warning on DragonFly BSD. 
llvm-svn: 85782
 2009-11-02 03:20:57 +00:00
Edward O'Callaghan
e91c6a1a44 Fix for warning seen on DF-BSD, Victor, please fix this to use a shift instead of pow() 
llvm-svn: 85781
 2009-11-02 03:14:31 +00:00
Chris Lattner
4372b58329 tidy up some more: remove some extraneous inline specifiers, return harder. 
llvm-svn: 85780
 2009-11-02 03:03:42 +00:00
Edward O'Callaghan
64a2e8f6a5 Apply fix for PR5135, Credit to Andreas Neustifter. 
llvm-svn: 85779
 2009-11-02 02:55:39 +00:00
Chris Lattner
1c8cb53667 eliminate the SCCPSolver::getValueMapping method. 
llvm-svn: 85778
 2009-11-02 02:54:24 +00:00
Chris Lattner
f02562df08 fix failures introduced in r85774 
llvm-svn: 85777
 2009-11-02 02:48:17 +00:00
Chris Lattner
d4f286cb0c factor duplicated code into a new DeleteInstructionInBlock 
function, eliminate temporary (and pointless) smallvector.

llvm-svn: 85776
 2009-11-02 02:47:51 +00:00
Chris Lattner
a806b18c99 Chris used to use '...' instead of proper grammar. 
llvm-svn: 85775
 2009-11-02 02:33:50 +00:00
Chris Lattner
37dc1cb0fb remove some extraneous llvmcontext stuff. 
llvm-svn: 85774
 2009-11-02 02:30:06 +00:00
Chris Lattner
28db47c45a change LatticeVal to use PointerIntPair to save some space. 
llvm-svn: 85773
 2009-11-02 02:20:32 +00:00
Chris Lattner
b94afb778c fix instcombine to only do store sinking when the alignments 
of the two loads agree.  Propagate that onto the new store.

llvm-svn: 85772
 2009-11-02 02:06:37 +00:00
Chris Lattner
96bfb792af merge a test into store.ll 
llvm-svn: 85771
 2009-11-02 02:00:18 +00:00
Chris Lattner
0eaddd9187 convert to filecheck 
llvm-svn: 85770
 2009-11-02 01:58:03 +00:00
Bill Wendling
772f96dca7 Add missing end-tag. 
llvm-svn: 85769
 2009-11-02 00:25:26 +00:00
Bill Wendling
a2574815af Some formatting changes. 
llvm-svn: 85768
 2009-11-02 00:24:16 +00:00
Anton Korobeynikov
09147da530 Handle splats of undefs properly. This includes the testcase for PR5364 as well. 
llvm-svn: 85767
 2009-11-02 00:12:06 +00:00
Anton Korobeynikov
9737bfedeb Do not infer the target type for COPY_TO_REGCLASS from dest regclass, this won't work if it can contain several types. Require explicit result type for the node for now. This fixes PR5364. 
PS: It seems that blackfin usage of copy_to_regclass is completely bogus!
llvm-svn: 85766
 2009-11-02 00:11:39 +00:00
Anton Korobeynikov
ed410a8ee3 64-bit FP loads & stores operate on both NEON and VFP pipelines. 
llvm-svn: 85765
 2009-11-02 00:11:06 +00:00
Anton Korobeynikov
3ba3789153 Use NEON reg-reg moves, where profitable. This reduces "domain-cross" stalls, when we used to mix vfp and neon code (the former were used for reg-reg moves) 
llvm-svn: 85764
 2009-11-02 00:10:38 +00:00
Evan Cheng
80a8ae9a3a 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
Nick Lewycky
6623dcf203 Line this up as well. 
llvm-svn: 85748
 2009-11-01 22:08:51 +00:00
Nick Lewycky
2f3164a81c Fix whitespace. 
llvm-svn: 85747
 2009-11-01 22:07:54 +00:00
Evan Cheng
a409c074c8 Fix a couple more places where we are creating ld / st instructions without memoperands. 
llvm-svn: 85746
 2009-11-01 22:04:35 +00:00
Evan Cheng
4a0d47f209 Make use of imm12 version of Thumb2 ldr / str instructions more aggressively. 
llvm-svn: 85743
 2009-11-01 21:12:51 +00:00
Chris Lattner
dc9cf48396 fix two strange things in the default passmgr: 
1. we'd run simplifycfg at the very start, even though
the per function passes have already cleaned this up.

2. In the main per-function pipeline that is interlaced with inlining 
   etc, we would do instcombine, jump threading, simplifycfg *before*
   doing SROA.  SROA is much more likely to expose opportunities for
   these passes than they are for SROA, so move SRoA up earlier.

also add some comments.

llvm-svn: 85742
 2009-11-01 20:41:59 +00:00
Chris Lattner
326adfb172 merge phi-merge.ll into phi.ll 
I don't know what Dan wants to do with phi-merge-gep.ll, I'll let
him deal with it because instcombine may end up sinking these.

llvm-svn: 85739
 2009-11-01 20:10:11 +00:00
Chris Lattner
f3c2039dde when merging two loads, make sure to take the min of their alignment, 
not the max.  This didn't matter until the previous patch because
instcombine would refuse to sink loads with differenting alignments.

llvm-svn: 85738
 2009-11-01 20:07:07 +00:00
Chris Lattner
e7b1e067e9 split load sinking out to its own function, like gep sinking. 
llvm-svn: 85737
 2009-11-01 20:04:24 +00:00
Chris Lattner
b3fe1009a5 fix a bug noticed by inspection: when instcombine sinks loads through 
phis, it didn't preserve the alignment of the load.  This is a missed
optimization of the alignment is high and a miscompilation when the
alignment is low.

llvm-svn: 85736
 2009-11-01 19:50:13 +00:00
Chris Lattner
2db49d0a22 IPSCCP apparently is not a superset of IPCP, this is bad, 
but I'll investigate it separately.  This unbreaks 
test/FrontendC/weak_constant.c

llvm-svn: 85735
 2009-11-01 19:29:12 +00:00
Chris Lattner
c0f971670d convert to filecheck. 
llvm-svn: 85734
 2009-11-01 19:22:20 +00:00
Duncan Sands
555af234e6 Improve the other instance of the comment. 
llvm-svn: 85733
 2009-11-01 19:16:21 +00:00
Duncan Sands
fd3669403c Add a missing closing parenthesis, and tweak to fit in 80 
columns.

llvm-svn: 85732
 2009-11-01 19:12:43 +00:00