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33568 Commits

Author SHA1 Message Date
Eli Friedman
98daf610fb Remove function left over from other jump threading cleanup. 
llvm-svn: 86289
 2009-11-06 21:24:57 +00:00
Chris Lattner
93a3e74486 Fix a problem discovered on self host. 
llvm-svn: 86278
 2009-11-06 19:21:48 +00:00
Chris Lattner
17dc911808 remove more code subsumed by r86264 
llvm-svn: 86270
 2009-11-06 18:24:32 +00:00
Devang Patel
1a557eacb8 Tolerate invalid derived type. 
llvm-svn: 86269
 2009-11-06 18:24:05 +00:00
Chris Lattner
8b677402d3 eliminate some more code subsumed by r86264 
llvm-svn: 86267
 2009-11-06 18:22:54 +00:00
Chris Lattner
79534a05af remove now redundant code, r86264 handles this case. 
llvm-svn: 86266
 2009-11-06 18:20:58 +00:00
Chris Lattner
b688868418 Extend jump threading to support much more general threading 
predicates.  This allows us to jump thread things like:

_ZN12StringSwitchI5ColorE4CaseILj7EEERS1_RAT__KcRKS0_.exit119:
  %tmp1.i24166 = phi i8 [ 1, %bb5.i117 ], [ %tmp1.i24165, %_Z....exit ], [ %tmp1.i24165, %bb4.i114 ] 
  %toBoolnot.i87 = icmp eq i8 %tmp1.i24166, 0     ; <i1> [#uses=1]
  %tmp4.i90 = icmp eq i32 %tmp2.i, 6              ; <i1> [#uses=1]
  %or.cond173 = and i1 %toBoolnot.i87, %tmp4.i90  ; <i1> [#uses=1]
  br i1 %or.cond173, label %bb4.i96, label %_ZN12...

Where it is "obvious" that when coming from %bb5.i117 that the 'and' is always 
false.  This triggers a surprisingly high number of times in the testsuite, 
and gets us closer to generating good code for doug's strswitch testcase.

This also make a bunch of other code in jump threading redundant, I'll rip
out in the next patch.  This survived an enable-checking llvm-gcc bootstrap.

llvm-svn: 86264
 2009-11-06 18:15:14 +00:00
Dan Gohman
aadf548295 Use WriteAsOperand to print GlobalAddress MachineOperands. This 
prints them with the leading '@'.

llvm-svn: 86261
 2009-11-06 18:03:10 +00:00
Devang Patel
0d1f6a9d0e Do not bother to emit debug info for nameless global variable. 
llvm-svn: 86259
 2009-11-06 17:58:12 +00:00
Daniel Dunbar
4daaf9d3f4 Pass StringRef by value. 
llvm-svn: 86251
 2009-11-06 10:58:06 +00:00
Chris Lattner
6a31c1141c remove some more Context arguments. 
llvm-svn: 86235
 2009-11-06 05:59:53 +00:00
Chris Lattner
903ae55e1c remove a bunch of extraneous LLVMContext arguments 
from various APIs, addressing PR5325.

llvm-svn: 86231
 2009-11-06 04:27:31 +00:00
Victor Hernandez
a5a12cd62e Revert r86077 because it caused crashes in 179.art and 175.vpr on ARM 
llvm-svn: 86213
 2009-11-06 01:33:24 +00:00
Devang Patel
5035033346 Do not try to emit debug info entry for dead global variable. 
llvm-svn: 86212
 2009-11-06 01:30:04 +00:00
Dan Gohman
ada358e6a2 Factor out the printing of the leading tab into printInlineAsm. 
llvm-svn: 86199
 2009-11-06 00:04:54 +00:00
Dan Gohman
1a8616a0d7 Use SUBREG_TO_REG instead of INSERT_SUBREG to model x86-64's 
implicit zero-extend.

llvm-svn: 86196
 2009-11-05 23:53:08 +00:00
Dan Gohman
54aa68b309 Teach LSR to avoid calling SplitCriticalEdge on edges with indirectbr. 
llvm-svn: 86193
 2009-11-05 23:34:59 +00:00
Dan Gohman
d159b46665 Fix the label name generation for address-taken labels to avoid potential 
problems with name collisions.

llvm-svn: 86189
 2009-11-05 23:14:35 +00:00
Lang Hames
3af601069a Added support for renumbering existing index list elements. Removed some junk from the initial numbering code in runOnMachineFunction. 
llvm-svn: 86184
 2009-11-05 22:20:57 +00:00
Dan Gohman
e93b2dbc0f Avoid calling getUniqueExitBlocks from within LoopSimplify, as it depends 
on loops having dedicated exits, which LoopSimplify can no longer always
guarantee.

llvm-svn: 86181
 2009-11-05 21:48:32 +00:00
Dan Gohman
6a3eefbfeb LoopDeletion depends on loops having dedicated exits. 
llvm-svn: 86180
 2009-11-05 21:47:04 +00:00
Dan Gohman
f65735f0c5 The introduction of indirectbr meant the introduction of 
unsplittable critical edges, which means the introduction of
loops which cannot be transformed to LoopSimplify form. Fix
LoopSimplify to avoid transforming such loops into invalid
code.

llvm-svn: 86176
 2009-11-05 21:14:46 +00:00
Dan Gohman
3c155aa3cd Update various Loop optimization passes to cope with the possibility that 
LoopSimplify form may not be available.

llvm-svn: 86175
 2009-11-05 21:11:53 +00:00
David Goodwin
8a18560a67 Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates. 
llvm-svn: 86172
 2009-11-05 21:06:09 +00:00
Dan Gohman
cf44615b89 Teach LoopUnroll how to bail if LoopSimplify can't give it what it needs. 
llvm-svn: 86164
 2009-11-05 19:44:06 +00:00
Dan Gohman
0c3b2f8419 Call getAnalysis<LoopInfo> the normal way, instead of asking passed-in 
LoopPassManager for it.

llvm-svn: 86163
 2009-11-05 19:43:25 +00:00
Dan Gohman
770613e3be Fix IVUsers to avoid assuming that the loop has a unique backedge. 
llvm-svn: 86161
 2009-11-05 19:41:37 +00:00
Dan Gohman
a25cd27300 Delete an unused member variable. 
llvm-svn: 86160
 2009-11-05 19:33:15 +00:00
Dan Gohman
6f6862e558 Factor out the predicate code for loopsimplify form exit blocks into 
a separate helper function.

llvm-svn: 86159
 2009-11-05 19:21:41 +00:00
Dan Gohman
e564d875c8 Avoid printing a redundant space in SDNode->dump(). 
llvm-svn: 86151
 2009-11-05 18:49:11 +00:00
Dan Gohman
eec0f1c506 Remove uninteresting and confusing debug output. 
llvm-svn: 86149
 2009-11-05 18:47:09 +00:00
Dan Gohman
7e9c38c364 Add an assertion to catch indirectbr in SplitBlockPredecessors. This 
makes several optimization passes abort in cases where they're currently
silently miscompiling code.

Remove the indirectbr assertion from SplitEdge. Indirectbr is only
a problem for critical edges, and SplitEdge defers to SplitCriticalEdge
to handle those, and SplitCriticalEdge has its own assertion for
indirectbr.

llvm-svn: 86147
 2009-11-05 18:25:44 +00:00
Chris Lattner
7f61fbfcca add a note from PR5313 
llvm-svn: 86146
 2009-11-05 18:19:19 +00:00
Benjamin Kramer
a38019a3de Teach SimplifyLibCalls to fold memcmp calls with constant arguments. 
llvm-svn: 86141
 2009-11-05 17:44:22 +00:00
Benjamin Kramer
f10e3edefb Do map insert+find in one step. TODO -= 2. 
llvm-svn: 86133
 2009-11-05 14:33:27 +00:00
Benjamin Kramer
ac39e59ede Path::createDirectoryOnDisk should ignore existing directories on win32 too. 
llvm-svn: 86132
 2009-11-05 14:32:40 +00:00
Mon P Wang
0669a8df22 Reintroduce support for overloading target intrinsics 
llvm-svn: 86114
 2009-11-05 03:19:08 +00:00
David Goodwin
66b5886123 Replace std::map.at() with std::map[]. 
llvm-svn: 86102
 2009-11-05 01:45:50 +00:00
David Goodwin
5ddf009b51 Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies. 
llvm-svn: 86098
 2009-11-05 01:19:35 +00:00
Evan Cheng
52dedf7dfe Now that code placement optimization pass is run for JIT, make sure it's before pre-emit passes. 
llvm-svn: 86092
 2009-11-05 01:16:59 +00:00
Devang Patel
02635b0c7a Use WeakVH while storing metadata in containers. 
This fixes PR5393.

llvm-svn: 86091
 2009-11-05 01:13:02 +00:00
Evan Cheng
3a05d1d9bb Code refactoring. 
llvm-svn: 86085
 2009-11-05 00:51:13 +00:00
David Goodwin
442fe1bbf8 Correctly add chain dependencies around calls and unknown-side-effect instructions. 
llvm-svn: 86080
 2009-11-05 00:16:44 +00:00
Victor Hernandez
21ec158c23 Update CreateMalloc so that its callers specify the size to allocate: 
MallocInst-autoupgrade users use non-TargetData-computed allocation sizes.
Optimization uses use TargetData to compute the allocation size.

Now that malloc calls can have constant sizes, update isArrayMallocHelper() to use TargetData to determine the size of the malloced type and the size of malloced arrays.
Extend getMallocType() to support malloc calls that have non-bitcast uses.

Update OptimizeGlobalAddressOfMalloc() to optimize malloc calls that have non-bitcast uses.  The bitcast use of a malloc call has to be treated specially here because the uses of the bitcast need to be replaced and the bitcast needs to be erased (just like the malloc call) for OptimizeGlobalAddressOfMalloc() to work correctly.

Update PerformHeapAllocSRoA() to optimize malloc calls that have non-bitcast uses.  The bitcast use of the malloc is not handled specially here because ReplaceUsesOfMallocWithGlobal replaces through the bitcast use.

Update OptimizeOnceStoredGlobal() to not care about the malloc calls' bitcast use.

Update all globalopt malloc tests to not rely on autoupgraded-MallocInsts, but instead use explicit malloc calls with correct allocation sizes.

llvm-svn: 86077
 2009-11-05 00:03:03 +00:00
Devang Patel
c69c29bc4b While calculating original type size for a derived type, handle type variants encoded as DIDerivedType appropriately. 
This improves bitfield support.

llvm-svn: 86073
 2009-11-04 23:48:00 +00:00
Jim Grosbach
ef37391033 Grammar. 
llvm-svn: 86068
 2009-11-04 23:20:40 +00:00
Chris Lattner
a003aee613 improve DSE when TargetData is not around, based on work by 
Hans Wennborg!

llvm-svn: 86067
 2009-11-04 23:20:12 +00:00
Jim Grosbach
2867641b64 Now that the memory leak from McCat/08-main has been fixed (86056), re-enable 
aggressive testing of dynamic stack alignment.
Note that this is off by default, and enabled for LLCBETA nightly results.

llvm-svn: 86064
 2009-11-04 23:11:07 +00:00
Jim Grosbach
c0cabc9119 If a function has no stack frame at all, dynamic realignment isn't necessary. 
llvm-svn: 86057
 2009-11-04 22:41:51 +00:00
Jim Grosbach
c8a01556f4 dynamic stack realignment necessitates scanning the floating point callee- 
saved instructions even if no stack adjustment for those saves is needed.

llvm-svn: 86056
 2009-11-04 22:41:00 +00:00
Devang Patel
799b8cc191 Fix DW_AT_data_member_location for bit-fields. It points to the location of annonymous field that covers respective field. 
llvm-svn: 86054
 2009-11-04 22:06:12 +00:00
Bob Wilson
25738f9e79 Add PowerPC codegen for indirect branches. 
llvm-svn: 86050
 2009-11-04 21:31:18 +00:00
Lang Hames
2b16464904 Handle empty/tombstone keys for LiveIndex more cleanly. Check for index sanity when constructing index list entries. 
llvm-svn: 86049
 2009-11-04 21:24:15 +00:00
Duncan Sands
7d20275318 A value is only assigned to errno if NumRead equals -1, so do 
not reason based on errno if NumRead has a different value.

llvm-svn: 86046
 2009-11-04 20:50:23 +00:00
Eric Christopher
f20f6980cb Add some options to disable various code gen optimizations. 
llvm-svn: 86044
 2009-11-04 19:57:50 +00:00
Devang Patel
773993746e Array element size does not match array size but array is not a bitfield. 
llvm-svn: 86043
 2009-11-04 19:37:40 +00:00
Jakob Stoklund Olesen
f775e222e0 Print out an informative comment for KILL instructions. 
The KILL pseudo-instruction may survive to the asm printer pass, just like the IMPLICIT_DEF. Print the KILL as a comment instead of just leaving a blank line in the output.

With -asm-verbose=0, a blank line is printed, like IMPLICIT?DEF.

llvm-svn: 86041
 2009-11-04 19:24:37 +00:00
Chris Lattner
4864198071 Fix an iterator invalidation bug that happens when a hashtable 
resizes in IPSCCP.  This fixes PR5394.

llvm-svn: 86036
 2009-11-04 18:57:42 +00:00
Evan Cheng
801415706c RangeIsDefinedByCopyFromReg() should check for subreg_to_reg, insert_subreg, 
and extract_subreg as a "copy" that defines a valno.
Also fixes a typo. These two issues prevent a simple subreg coalescing from
happening before.

llvm-svn: 86022
 2009-11-04 08:33:14 +00:00
Chris Lattner
d8ab8fbe9f move two functions up higher in the file. Delete a useless argument 
to EmitGEPOffset.  

Implement some new transforms for optimizing 
subtracts of two pointer to ints into the same vector.  This happens
for C++ iterator idioms for example, stringmap takes a const char*
that points to the start and end of a string.  Once inlined, we want
the pointer difference to turn back into a length.

This is rdar://7362831.

llvm-svn: 86021
 2009-11-04 08:05:20 +00:00
Evan Cheng
22121f4c69 The .n suffix must go after the predicate. 
llvm-svn: 86019
 2009-11-04 07:38:48 +00:00
Douglas Gregor
4cd9c97c74 Fix CMake makefiles 
llvm-svn: 85994
 2009-11-04 01:32:06 +00:00
Evan Cheng
1a06b12330 Use ldr.n to workaround a darwin assembler bug. 
llvm-svn: 85980
 2009-11-04 00:00:39 +00:00
Lang Hames
deed780bc6 The Indexes Patch. 
This introduces a new pass, SlotIndexes, which is responsible for numbering
instructions for register allocation (and other clients). SlotIndexes numbering
is designed to match the existing scheme, so this patch should not cause any
changes in the generated code.

For consistency, and to avoid naming confusion, LiveIndex has been renamed
SlotIndex.

The processImplicitDefs method of the LiveIntervals analysis has been moved
into its own pass so that it can be run prior to SlotIndexes. This was
necessary to match the existing numbering scheme.

llvm-svn: 85979
 2009-11-03 23:52:08 +00:00
Bob Wilson
8209e942a6 Fix branch folding bug for indirect branches: for a block containing only 
an unconditional branch (possibly from tail merging), this code is
trying to redirect all of its predecessors to go directly to the branch
target, but that isn't feasible for indirect branches.  The other
predecessors (that don't end with indirect branches) could theoretically
still be handled, but that is not easily done right now.

The AnalyzeBranch interface doesn't currently let us distinguish jump table
branches from indirect branches, and this code is currently handling
jump tables.  To avoid punting on address-taken blocks, we would have to give
up handling jump tables.  That seems like a bad tradeoff.

llvm-svn: 85975
 2009-11-03 23:44:31 +00:00
Chris Lattner
b634c6cdb5 reimplement multiple return value handling in IPSCCP, making it 
more aggressive an correct.  This survives building llvm in 64-bit
mode with optimizations and the built llvm passes make check.

llvm-svn: 85973
 2009-11-03 23:40:48 +00:00
Evan Cheng
b50510c510 Fix t2Int_eh_sjlj_setjmp. Immediate form of orr is a 32-bit instruction. So it should be 22 bytes instead of 20 bytes long. 
llvm-svn: 85965
 2009-11-03 23:13:34 +00:00
Evan Cheng
caab17007b fconsts / fconstd immediate should be proceeded with #. 
llvm-svn: 85952
 2009-11-03 21:59:33 +00:00
Evan Cheng
d783406059 Re-apply 85799. It turns out my code isn't buggy. 
llvm-svn: 85947
 2009-11-03 21:40:02 +00:00
David Goodwin
629a685f05 Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
llvm-svn: 85939
 2009-11-03 20:57:50 +00:00
Chris Lattner
10c341e8fa finish half thunk thought 
llvm-svn: 85937
 2009-11-03 20:52:57 +00:00
Victor Hernandez
628b65ea6e Changes requested (avoid getFunction(), avoid Type creation via isVoidTy(), and avoid redundant isFreeCall cases) in feedback to r85176 
llvm-svn: 85936
 2009-11-03 20:39:35 +00:00
David Goodwin
9f1cf41932 <rdar://problem/7352605>. When building schedule graph use mayAlias information to avoid chaining loads/stores of spill slots with non-aliased memory ops. 
llvm-svn: 85934
 2009-11-03 20:15:00 +00:00
Victor Hernandez
046375ac3f Changes (* location in pointer variables, avoiding include, and using APInt::getLimitedValue) based on feedback to r85814 
llvm-svn: 85933
 2009-11-03 20:02:35 +00:00
Chris Lattner
2aa5962af6 fix an IPSCCP bug I introduced when I changed IPSCCP to start working on 
functions that don't have local linkage.  Basically, we need to be more
careful about propagating argument information to functions whose results
we aren't tracking.  This fixes a miscompilation of 
LLVMCConfigurationEmitter.cpp when built with an llvm-gcc that has ipsccp
enabled.

llvm-svn: 85923
 2009-11-03 19:24:51 +00:00
Duncan Sands
d4b8f9ee93 Make this code more robust by not thinking we are making progress 
if zero bytes were read.

llvm-svn: 85922
 2009-11-03 19:10:22 +00:00
Devang Patel
5b0aaf3a1f Parse debug info attached with insertvalue and extractvalue instructions. 
llvm-svn: 85921
 2009-11-03 19:06:07 +00:00
Anton Korobeynikov
de7cbab064 Move subtarget check upper for NEON reg-reg fixup pass. 
llvm-svn: 85914
 2009-11-03 18:46:11 +00:00
Devang Patel
7cb7017106 Ignore unnamed variables. 
llvm-svn: 85909
 2009-11-03 18:30:27 +00:00
Chris Lattner
bfe755788f fix a subtle bug I introduced when refactoring SCCP. Testcase 
to follow.

llvm-svn: 85903
 2009-11-03 16:50:11 +00:00
Benjamin Kramer
c6b59b889b Eliminate some temporaries. 
llvm-svn: 85896
 2009-11-03 12:52:50 +00:00
Evan Cheng
1d4575274c Trim unnecessary include. 
llvm-svn: 85878
 2009-11-03 07:08:08 +00:00
Bob Wilson
97331f70ca For Thumb indirect branches, use "mov pc, reg" which does not switch 
between ARM/Thumb modes and does not require the low bit of the target
address to be set for Thumb.

llvm-svn: 85874
 2009-11-03 06:29:56 +00:00
Jeffrey Yasskin
bc6f9d7e70 Fix a funky "declared with greater visibility than the type of its field" 
warning from gcc by removing VISIBILITY_HIDDEN attributes.  

llvm-svn: 85873
 2009-11-03 06:29:36 +00:00
Evan Cheng
ed22395c61 Fix PR5367. QPR_8 is the super regclass of DPR_8 and SPR_8. 
llvm-svn: 85871
 2009-11-03 05:52:54 +00:00
Evan Cheng
2807af42c0 Clean up copyRegToReg. 
llvm-svn: 85870
 2009-11-03 05:51:39 +00:00
Evan Cheng
9bedf1b587 Add QPR_8 as a superreg class of SPR_8 and DPR_8. 
llvm-svn: 85869
 2009-11-03 05:50:57 +00:00
Chris Lattner
7585c1f162 remove unneeded checks of isFreeCall 
llvm-svn: 85866
 2009-11-03 05:35:19 +00:00
Chris Lattner
cbd903cd12 remove a check of isFreeCall: the argument to free is already nocapture so the generic call code works fine. 
llvm-svn: 85865
 2009-11-03 05:34:51 +00:00
Chris Lattner
9d0f925cf0 remove a isFreeCall check: it is a callinst that can write to memory already. 
llvm-svn: 85863
 2009-11-03 05:33:46 +00:00
Ted Kremenek
a474928cda Update CMake file. 
llvm-svn: 85861
 2009-11-03 04:14:12 +00:00
Ted Kremenek
cd7ab8bfa0 Alphabetize. 
llvm-svn: 85859
 2009-11-03 04:01:53 +00:00
Chris Lattner
b1dfdadabd turn IPSCCP back on now that the iterator invalidation bug is fixed. 
llvm-svn: 85858
 2009-11-03 03:42:51 +00:00
Anton Korobeynikov
ff29071cc6 Turn neon reg-reg moves fixup code into separate pass. This should reduce the compile time. 
llvm-svn: 85850
 2009-11-03 01:04:26 +00:00
Anton Korobeynikov
48b30c79be Revert r85049, it is causing PR5367 
llvm-svn: 85847
 2009-11-03 00:24:48 +00:00
Bob Wilson
7e071e14eb Revert previous change to a comment. The BlockAddresses go in the 
constant pool so they don't get wrapped separately.

llvm-svn: 85844
 2009-11-03 00:02:05 +00:00
Chris Lattner
00c9eb665d fix a nasty iterator invalidation bug from my conversion from 
std::map to DenseMap, exposed on release llvm-gcc bootstrap.

llvm-svn: 85840
 2009-11-02 23:25:39 +00:00
Evan Cheng
ca5847665b Revert 85799 for now. It might be breaking llvm-gcc driver. 
llvm-svn: 85827
 2009-11-02 21:49:14 +00:00
Bob Wilson
3144715b53 Put BlockAddresses into ARM constant pools. 
llvm-svn: 85824
 2009-11-02 20:59:23 +00:00
Kevin Enderby
633b294095 Fix ARMAsmParser::ParseMemoryOffsetReg() where the parameter OffsetRegNum should 
have been passed as a reference.

llvm-svn: 85823
 2009-11-02 20:14:39 +00:00
Chris Lattner
6f515d4ba8 revert r8579[56], which are causing unhappiness in buildbot land. 
llvm-svn: 85818
 2009-11-02 19:31:10 +00:00
Victor Hernandez
1d2fd19df6 Set bit instead of calling pow() to compute 2 << n 
llvm-svn: 85814
 2009-11-02 18:51:28 +00:00
Chris Lattner
874e573d61 typo 
llvm-svn: 85812
 2009-11-02 18:28:45 +00:00
Chris Lattner
a1776913ab disable IPSCCP support for multiple return values, it is buggy, so just 
disable it until I can fix it.

llvm-svn: 85810
 2009-11-02 18:22:51 +00:00
David Goodwin
9aa890eab6 Fix schedule model for BFC. 
llvm-svn: 85809
 2009-11-02 17:28:36 +00:00
Bob Wilson
0c213bed8b Hyphenate some comments. 
llvm-svn: 85808
 2009-11-02 17:10:37 +00:00
David Goodwin
0668ac893d Chain dependencies used to enforce memory order should have latency of 0 (except for true dependency of Store followed by aliased Load... we estimate that case with a single cycle of latency assuming the hardware will bypass) 
llvm-svn: 85807
 2009-11-02 17:06:28 +00:00
Bob Wilson
6eb4f53d90 Add support for BlockAddress values in ARM constant pools. 
llvm-svn: 85806
 2009-11-02 16:59:06 +00:00
Bob Wilson
ac53e0c640 Prune unnecessary include. 
llvm-svn: 85805
 2009-11-02 16:58:31 +00:00
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
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
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
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
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
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
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
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
Chris Lattner
888d78216f cleanups, switch GlobalDCE to SmallPtrSet instead of std::set 
llvm-svn: 85730
 2009-11-01 19:03:42 +00:00
Chris Lattner
ad2926bbb4 remove a bunch of locking from LLVMContextImpl. Since only one thread 
can be banging on a context at a time, this isn't needed.  Owen, please
review.

llvm-svn: 85728
 2009-11-01 18:42:03 +00:00
Chris Lattner
02e43b65d1 improve comment. 
llvm-svn: 85725
 2009-11-01 18:17:37 +00:00
Chris Lattner
11944e39d4 add a comment about why we don't allow inlining indbr. 
llvm-svn: 85724
 2009-11-01 18:16:30 +00:00
Chris Lattner
55a53e4e79 the verifier shouldn't modify the IR. 
llvm-svn: 85722
 2009-11-01 18:11:50 +00:00