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33646 Commits

Author SHA1 Message Date
Victor Hernandez
82ebca15a8 CallInst::CreateMalloc() and CallInst::CreateFree() need to create calls with correct calling convention 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86290 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 21:43:21 +00:00
Eli Friedman
50591ab1ea Remove function left over from other jump threading cleanup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86289 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 21:24:57 +00:00
Chris Lattner
82114b98c9 Fix a problem discovered on self host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86278 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 19:21:48 +00:00
Chris Lattner
90b9247377 remove more code subsumed by r86264 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86270 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:24:32 +00:00
Devang Patel
5ebfa2d181 Tolerate invalid derived type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86269 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:24:05 +00:00
Chris Lattner
f7807f6b9e eliminate some more code subsumed by r86264 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86267 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:22:54 +00:00
Chris Lattner
90926ab827 remove now redundant code, r86264 handles this case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86266 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:20:58 +00:00
Chris Lattner
785672534d 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.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86264 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:15:14 +00:00
Dan Gohman
8d4e3b5b48 Use WriteAsOperand to print GlobalAddress MachineOperands. This 
prints them with the leading '@'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86261 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 18:03:10 +00:00
Devang Patel
84c73e9b82 Do not bother to emit debug info for nameless global variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86259 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 17:58:12 +00:00
Daniel Dunbar
2928c83b01 Pass StringRef by value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86251 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 10:58:06 +00:00
Chris Lattner
f55eeb918e remove some more Context arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86235 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 05:59:53 +00:00
Chris Lattner
7b550ccfc5 remove a bunch of extraneous LLVMContext arguments 
from various APIs, addressing PR5325.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86231 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 04:27:31 +00:00
Victor Hernandez
df98761d08 Revert r86077 because it caused crashes in 179.art and 175.vpr on ARM 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86213 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 01:33:24 +00:00
Devang Patel
465c3bed16 Do not try to emit debug info entry for dead global variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86212 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 01:30:04 +00:00
Dan Gohman
40c57860da Factor out the printing of the leading tab into printInlineAsm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86199 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-06 00:04:54 +00:00
Dan Gohman
7289ed2ee7 Use SUBREG_TO_REG instead of INSERT_SUBREG to model x86-64's 
implicit zero-extend.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86196 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 23:53:08 +00:00
Dan Gohman
eb3567cd49 Teach LSR to avoid calling SplitCriticalEdge on edges with indirectbr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86193 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 23:34:59 +00:00
Dan Gohman
568a3be545 Fix the label name generation for address-taken labels to avoid potential 
problems with name collisions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86189 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 23:14:35 +00:00
Lang Hames
fbb8fa247e Added support for renumbering existing index list elements. Removed some junk from the initial numbering code in runOnMachineFunction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 22:20:57 +00:00
Dan Gohman
b1dc915a8d Avoid calling getUniqueExitBlocks from within LoopSimplify, as it depends 
on loops having dedicated exits, which LoopSimplify can no longer always
guarantee.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86181 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:48:32 +00:00
Dan Gohman
32cc5f47fa LoopDeletion depends on loops having dedicated exits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86180 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:47:04 +00:00
Dan Gohman
f4e82d1f2e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86176 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:14:46 +00:00
Dan Gohman
03e896bd60 Update various Loop optimization passes to cope with the possibility that 
LoopSimplify form may not be available.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86175 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:11:53 +00:00
David Goodwin
7040d6e2f5 Fix bug in aggressive antidep breaking; liveness was not updated correctly for regions that do not have antidep candidates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86172 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 21:06:09 +00:00
Dan Gohman
692ad8dd06 Teach LoopUnroll how to bail if LoopSimplify can't give it what it needs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86164 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 19:44:06 +00:00
Dan Gohman
6a02fc3070 Call getAnalysis<LoopInfo> the normal way, instead of asking passed-in 
LoopPassManager for it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86163 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 19:43:25 +00:00
Dan Gohman
a6a4aaefee Fix IVUsers to avoid assuming that the loop has a unique backedge. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86161 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 19:41:37 +00:00
Dan Gohman
6890584ab1 Delete an unused member variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86160 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 19:33:15 +00:00
Dan Gohman
f17e9511f1 Factor out the predicate code for loopsimplify form exit blocks into 
a separate helper function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86159 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 19:21:41 +00:00
Dan Gohman
c5600c89d6 Avoid printing a redundant space in SDNode->dump(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86151 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 18:49:11 +00:00
Dan Gohman
73bb251cd7 Remove uninteresting and confusing debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86149 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 18:47:09 +00:00
Dan Gohman
b8eb17c807 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86147 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 18:25:44 +00:00
Chris Lattner
6c9fab7404 add a note from PR5313 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86146 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 18:19:19 +00:00
Benjamin Kramer
992a637297 Teach SimplifyLibCalls to fold memcmp calls with constant arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86141 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 17:44:22 +00:00
Benjamin Kramer
bcaa2157dd Do map insert+find in one step. TODO -= 2. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86133 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 14:33:27 +00:00
Benjamin Kramer
e9684c682a Path::createDirectoryOnDisk should ignore existing directories on win32 too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86132 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 14:32:40 +00:00
Mon P Wang
82c443655d Reintroduce support for overloading target intrinsics 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86114 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 03:19:08 +00:00
David Goodwin
98f2f1aff8 Replace std::map.at() with std::map[]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86102 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:45:50 +00:00
David Goodwin
54097836f3 Break anti-dependencies using free registers in a round-robin manner to avoid introducing new anti-dependencies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86098 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:19:35 +00:00
Evan Cheng
517e2556e3 Now that code placement optimization pass is run for JIT, make sure it's before pre-emit passes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86092 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:16:59 +00:00
Devang Patel
85b8de8118 Use WeakVH while storing metadata in containers. 
This fixes PR5393.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86091 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 01:13:02 +00:00
Evan Cheng
9fb744e169 Code refactoring. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86085 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 00:51:13 +00:00
David Goodwin
5be870add9 Correctly add chain dependencies around calls and unknown-side-effect instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86080 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 00:16:44 +00:00
Victor Hernandez
24f934d055 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86077 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-05 00:03:03 +00:00
Devang Patel
61ecbd196c While calculating original type size for a derived type, handle type variants encoded as DIDerivedType appropriately. 
This improves bitfield support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86073 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 23:48:00 +00:00
Jim Grosbach
4371cda7f8 Grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86068 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 23:20:40 +00:00
Chris Lattner
40dd12e708 improve DSE when TargetData is not around, based on work by 
Hans Wennborg!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86067 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 23:20:12 +00:00
Jim Grosbach
db1751a922 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86064 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 23:11:07 +00:00
Jim Grosbach
6db06a0866 If a function has no stack frame at all, dynamic realignment isn't necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86057 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 22:41:51 +00:00
Jim Grosbach
c5848f4ced dynamic stack realignment necessitates scanning the floating point callee- 
saved instructions even if no stack adjustment for those saves is needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86056 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 22:41:00 +00:00
Devang Patel
33db508283 Fix DW_AT_data_member_location for bit-fields. It points to the location of annonymous field that covers respective field. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86054 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 22:06:12 +00:00
Bob Wilson
3d90dbee69 Add PowerPC codegen for indirect branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86050 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 21:31:18 +00:00
Lang Hames
0368e500eb Handle empty/tombstone keys for LiveIndex more cleanly. Check for index sanity when constructing index list entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86049 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 21:24:15 +00:00
Duncan Sands
7127b13342 A value is only assigned to errno if NumRead equals -1, so do 
not reason based on errno if NumRead has a different value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86046 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 20:50:23 +00:00
Eric Christopher
522c01ac65 Add some options to disable various code gen optimizations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86044 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:57:50 +00:00
Devang Patel
c416d3b25d Array element size does not match array size but array is not a bitfield. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86043 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:37:40 +00:00
Jakob Stoklund Olesen
ad68264f59 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86041 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 19:24:37 +00:00
Chris Lattner
0fb7e18edd Fix an iterator invalidation bug that happens when a hashtable 
resizes in IPSCCP.  This fixes PR5394.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86036 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 18:57:42 +00:00
Evan Cheng
50608bac2f 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86022 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 08:33:14 +00:00
Chris Lattner
092543ca71 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86021 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 08:05:20 +00:00
Evan Cheng
b9f51cbe98 The .n suffix must go after the predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86019 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 07:38:48 +00:00
Douglas Gregor
dece1e217a Fix CMake makefiles 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 01:32:06 +00:00
Evan Cheng
7883fa942f Use ldr.n to workaround a darwin assembler bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85980 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 00:00:39 +00:00
Lang Hames
233a60ec40 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:52:08 +00:00
Bob Wilson
888acc35a3 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85975 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:44:31 +00:00
Chris Lattner
fc36a562ae 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:40:48 +00:00
Evan Cheng
5a1cd36019 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. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85965 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 23:13:34 +00:00
Evan Cheng
b23b2015eb fconsts / fconstd immediate should be proceeded with #. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85952 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 21:59:33 +00:00
Evan Cheng
777c6b7caa Re-apply 85799. It turns out my code isn't buggy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85947 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 21:40:02 +00:00
David Goodwin
4de099d8ca Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85939 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:57:50 +00:00
Chris Lattner
abf67ef548 finish half thunk thought 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85937 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:52:57 +00:00
Victor Hernandez
3ad70d5d61 Changes requested (avoid getFunction(), avoid Type creation via isVoidTy(), and avoid redundant isFreeCall cases) in feedback to r85176 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85936 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:39:35 +00:00
David Goodwin
a9e610768b <rdar://problem/7352605>. When building schedule graph use mayAlias information to avoid chaining loads/stores of spill slots with non-aliased memory ops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85934 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:15:00 +00:00
Victor Hernandez
88efeaee22 Changes (* location in pointer variables, avoiding include, and using APInt::getLimitedValue) based on feedback to r85814 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85933 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 20:02:35 +00:00
Chris Lattner
2396cc37ae 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 19:24:51 +00:00
Duncan Sands
954cb43c80 Make this code more robust by not thinking we are making progress 
if zero bytes were read.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85922 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 19:10:22 +00:00
Devang Patel
e8bc45a645 Parse debug info attached with insertvalue and extractvalue instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85921 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 19:06:07 +00:00
Anton Korobeynikov
747409a290 Move subtarget check upper for NEON reg-reg fixup pass. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85914 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 18:46:11 +00:00
Devang Patel
1b845976d0 Ignore unnamed variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85909 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 18:30:27 +00:00
Chris Lattner
c175e5de2d fix a subtle bug I introduced when refactoring SCCP. Testcase 
to follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85903 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 16:50:11 +00:00
Benjamin Kramer
419e44edab Eliminate some temporaries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85896 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 12:52:50 +00:00
Evan Cheng
f6c0bffa8d Trim unnecessary include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85878 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 07:08:08 +00:00
Bob Wilson
af14e663ac 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85874 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 06:29:56 +00:00
Jeffrey Yasskin
36d52bf4df Fix a funky "declared with greater visibility than the type of its field" 
warning from gcc by removing VISIBILITY_HIDDEN attributes.  


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85873 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 06:29:36 +00:00
Evan Cheng
ba908640b3 Fix PR5367. QPR_8 is the super regclass of DPR_8 and SPR_8. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85871 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:52:54 +00:00
Evan Cheng
b4db6a46e0 Clean up copyRegToReg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85870 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:51:39 +00:00
Evan Cheng
3f4e47be0a Add QPR_8 as a superreg class of SPR_8 and DPR_8. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85869 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:50:57 +00:00
Chris Lattner
ff2f683143 remove unneeded checks of isFreeCall 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85866 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:35:19 +00:00
Chris Lattner
b8d264aa6b remove a check of isFreeCall: the argument to free is already nocapture so the generic call code works fine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85865 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:34:51 +00:00
Chris Lattner
938e176633 remove a isFreeCall check: it is a callinst that can write to memory already. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85863 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 05:33:46 +00:00
Ted Kremenek
92dbd0b320 Update CMake file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85861 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 04:14:12 +00:00
Ted Kremenek
8ab51e3041 Alphabetize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85859 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 04:01:53 +00:00
Chris Lattner
14532d03a1 turn IPSCCP back on now that the iterator invalidation bug is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85858 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 03:42:51 +00:00
Anton Korobeynikov
7aaf94bb0d Turn neon reg-reg moves fixup code into separate pass. This should reduce the compile time. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85850 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 01:04:26 +00:00
Anton Korobeynikov
ab453e0641 Revert r85049, it is causing PR5367 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85847 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 00:24:48 +00:00
Bob Wilson
b62d257cf5 Revert previous change to a comment. The BlockAddresses go in the 
constant pool so they don't get wrapped separately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85844 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 00:02:05 +00:00
Chris Lattner
5cc66d979d fix a nasty iterator invalidation bug from my conversion from 
std::map to DenseMap, exposed on release llvm-gcc bootstrap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85840 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 23:25:39 +00:00
Evan Cheng
454ac8961b Revert 85799 for now. It might be breaking llvm-gcc driver. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85827 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 21:49:14 +00:00
Bob Wilson
907eebd5a6 Put BlockAddresses into ARM constant pools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85824 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 20:59:23 +00:00
Kevin Enderby
60131c0d0b Fix ARMAsmParser::ParseMemoryOffsetReg() where the parameter OffsetRegNum should 
have been passed as a reference.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85823 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 20:14:39 +00:00
Chris Lattner
3774c91854 revert r8579[56], which are causing unhappiness in buildbot land. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85818 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 19:31:10 +00:00
Victor Hernandez
bc117b83f6 Set bit instead of calling pow() to compute 2 << n 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85814 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 18:51:28 +00:00
Chris Lattner
ee7644da4c typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85812 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 18:28:45 +00:00
Chris Lattner
2bbbbd6ac8 disable IPSCCP support for multiple return values, it is buggy, so just 
disable it until I can fix it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85810 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 18:22:51 +00:00
David Goodwin
2f54a2fd85 Fix schedule model for BFC. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85809 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 17:28:36 +00:00
Bob Wilson
31ba10b743 Hyphenate some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85808 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 17:10:37 +00:00
David Goodwin
7c9b1ac507 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) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85807 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 17:06:28 +00:00
Bob Wilson
28989a8ddc Add support for BlockAddress values in ARM constant pools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85806 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 16:59:06 +00:00
Bob Wilson
69e8445ced Prune unnecessary include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85805 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 16:58:31 +00:00
Evan Cheng
72ed88feac 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85799 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 08:09:49 +00:00
Evan Cheng
d3e18fad7e These are done / no longer care. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85798 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 07:58:25 +00:00
Evan Cheng
e3b88fc01e Add an entry. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85797 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 07:51:19 +00:00
Chris Lattner
12c8d5f5fe 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85795 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 07:33:59 +00:00
Chris Lattner
ff3ca15951 don't mark the arguments of prototype overdefined, they will never be queried. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85793 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 06:34:04 +00:00
Chris Lattner
e01985c95f restore some code I removed in r85788, refactor it into 
a shared place instead of duplicating it 4 times.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85792 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 06:28:16 +00:00
Chris Lattner
574fa9e83c remove some confused code that dates from when we had 
"multiple return values" but not "first class aggregates"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85791 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 06:17:06 +00:00
Chris Lattner
09275299e2 avoid redundant lookups in BBExecutable, and make it a SmallPtrSet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 06:11:23 +00:00
Chris Lattner
5638dc618a Use the libanalysis 'ConstantFoldLoadFromConstPtr' function 
instead of reinventing SCCP-specific logic.  This gives us
new powers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85789 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 06:06:14 +00:00
Chris Lattner
2a0433beea 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85788 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 05:55:40 +00:00
Evan Cheng
7baae87d8f Unbreak ARMBaseRegisterInfo::copyRegToReg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 04:44:55 +00:00
Chris Lattner
794c15dc71 fix a bug exposed by moving SRoA earlier which caused a crash building kc++ 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85786 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 04:37:17 +00:00
Chris Lattner
89112b608f only IPSCCP incoming arguments if the function is executable, this fixes 
an assertion on the buildbot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85784 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 03:25:55 +00:00
Chris Lattner
36c9952b1b add a new ValueState::getConstantInt() helper, use it to 
simplify some code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85783 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 03:21:36 +00:00
Edward O'Callaghan
bd5dc45296 Fix malloc.h is deprecated warning on DragonFly BSD. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85782 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 03:20:57 +00:00
Edward O'Callaghan
438b00b2ad Fix for warning seen on DF-BSD, Victor, please fix this to use a shift instead of pow() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85781 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 03:14:31 +00:00
Chris Lattner
38871e4c3b tidy up some more: remove some extraneous inline specifiers, return harder. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85780 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 03:03:42 +00:00
Edward O'Callaghan
2afd0723a2 Apply fix for PR5135, Credit to Andreas Neustifter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85779 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:55:39 +00:00
Chris Lattner
8db50122a4 eliminate the SCCPSolver::getValueMapping method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85778 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:54:24 +00:00
Chris Lattner
301a2792be fix failures introduced in r85774 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85777 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:48:17 +00:00
Chris Lattner
cc4f60b113 factor duplicated code into a new DeleteInstructionInBlock 
function, eliminate temporary (and pointless) smallvector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85776 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:47:51 +00:00
Chris Lattner
2f09625a9f Chris used to use '...' instead of proper grammar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85775 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:33:50 +00:00
Chris Lattner
ea0db070a1 remove some extraneous llvmcontext stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85774 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:30:06 +00:00
Chris Lattner
7927220aef change LatticeVal to use PointerIntPair to save some space. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85773 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:20:32 +00:00
Chris Lattner
7ebbabf500 fix instcombine to only do store sinking when the alignments 
of the two loads agree.  Propagate that onto the new store.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:06:37 +00:00
Anton Korobeynikov
2ae0eec1c0 Handle splats of undefs properly. This includes the testcase for PR5364 as well. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85767 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 00:12:06 +00:00
Anton Korobeynikov
3a639a07ea 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!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85766 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 00:11:39 +00:00
Anton Korobeynikov
2e1da9fea4 64-bit FP loads & stores operate on both NEON and VFP pipelines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85765 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 00:11:06 +00:00
Anton Korobeynikov
f95215f551 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) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85764 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 00:10:38 +00:00
Evan Cheng
f57b1baa44 Add PseudoSourceValue::mayAlias. It returns true if the object can ever alias any LLVM IR value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85762 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 23:50:04 +00:00
Evan Cheng
e3ce8aab0a Fix a couple more places where we are creating ld / st instructions without memoperands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85746 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 22:04:35 +00:00
Evan Cheng
48d8afab73 Make use of imm12 version of Thumb2 ldr / str instructions more aggressively. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85743 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 21:12:51 +00:00
Chris Lattner
a664bb7bdc 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85738 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 20:07:07 +00:00
Chris Lattner
751a362c22 split load sinking out to its own function, like gep sinking. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85737 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 20:04:24 +00:00
Chris Lattner
e3c6281a98 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85736 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 19:50:13 +00:00
Duncan Sands
b046964101 Add a missing closing parenthesis, and tweak to fit in 80 
columns.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85732 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 19:12:43 +00:00
Chris Lattner
ec4c7b9766 cleanups, switch GlobalDCE to SmallPtrSet instead of std::set 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85730 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 19:03:42 +00:00
Chris Lattner
c4775e4b97 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85728 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 18:42:03 +00:00
Chris Lattner
280f3fedbf improve comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85725 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 18:17:37 +00:00
Chris Lattner
66588707ac add a comment about why we don't allow inlining indbr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 18:16:30 +00:00