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Author SHA1 Message Date
Eli Friedman
28dc98f752 Fix for PR3225: disable a broken optimization in 
DAGTypeLegalizer::ExpandShiftWithKnownAmountBit.

In terms of restoring the optimization, the best fix here isn't 
obvious... any ideas?



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61119 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 03:35:17 +00:00
Mikhail Glushenkov
2d0484c02c Update also the generated docs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61118 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 02:47:30 +00:00
Mikhail Glushenkov
5c2b6b26c9 Some enhancements for the 'case' expression. 
Add (error) and (empty).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61117 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-17 02:47:01 +00:00
Dale Johannesen
b0390620d4 Clarify that the scale factor from CheckForIVReuse 
can be negative.  Keep track of whether all uses of
an IV are outside the loop.  Some cosmetics; no
functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61109 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 22:16:28 +00:00
Dale Johannesen
fd3b7b7df3 A new dag combine; several permutations of this 
are there under ADD, this one was missing.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61107 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 22:13:49 +00:00
Owen Anderson
d0b6a0d967 Add code to renumber split intervals into new vregs. This is disabled for now until I finish working out some iterator invalidation issues. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61104 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 21:35:08 +00:00
Chris Lattner
85d3d4f35d Fix another crash found by inspection. If we have a PHI node merging 
the load multiple times, make sure the check the uses of the PHI to 
ensure they are transformable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61102 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 21:24:51 +00:00
Chris Lattner
542dc1a0de fix a crash found by inspection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61101 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 21:04:51 +00:00
Eli Friedman
080efb8cea Add a helper to remove a branch and DCE the condition, and use it 
consistently for deleting branches.  In addition to being slightly 
more readable, this makes SimplifyCFG a bit better 
about cleaning up after itself when it makes conditions unused.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61100 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 20:54:32 +00:00
Dan Gohman
00dc84a2ca Eliminate the loop that walks the critical path. Instead, just track the 
position in the critical path during the main instruction walk.  This
eliminates the need for the CritialAntiDep DenseMap.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61096 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:27:52 +00:00
Bill Wendling
43445c153c Remove empty test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61095 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:07:17 +00:00
Bill Wendling
6fa311c233 Temporarily revert r61019, r61030, and r61040. These were breaking LLVM Release 
builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61094 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 19:06:48 +00:00
Dan Gohman
905ff1ebc4 Preserve SourceValue information when lowering produces multiple loads from 
different offsets within the same stack slot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61093 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:25:36 +00:00
Evan Cheng
09dc9c0c83 We have decided not to support inline asm where an output operand with a matching input operand with incompatible type (i.e. either one is a floating point and the other is an integer or the sizes of the types differ). SelectionDAGBuild will catch these and exit with an error. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61092 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 18:21:39 +00:00
Oscar Fuentes
8069f28a5d CMake: Added DbgInfoPrinter.cpp to lib/Analysis/CMakeFiles.txt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61087 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 12:25:04 +00:00
Torok Edwin
367cdff0c2 add testcase for -print-dbginfo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61086 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 10:10:23 +00:00
Torok Edwin
6e68106a47 Add -print-dbginfo pass that prints LLVM IR with comments inserted to show 
which source/line a certain BB/instruction comes from, original variable names,
and original (unmangled) C++ name of functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61085 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:09:19 +00:00
Torok Edwin
620f28095b Add utility functions to search for DbgStopPointInst corresponding to an 
instruction or BasicBlock, and to search for DbgDeclareInst corresponding to a
variable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61084 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:07:36 +00:00
Torok Edwin
a70c68efc8 use different name for parameter to make it clear that we set DIDescriptor::GV 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61083 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 09:06:01 +00:00
Nick Lewycky
1447f5ca1f Generalize support for analyzing loops to include SLE/SGE loop exit conditions 
and support for non-unit strides with signed exit conditions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61082 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 08:30:01 +00:00
Chris Lattner
5a6bb6ae78 switch some std::set/std::map to SmallPtrSet/DenseMap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61081 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 07:34:30 +00:00
Chris Lattner
f478951b0e fix PR3217: fully cached queries need to be verified against the 
visited set before they are used.  If used, their blocks need to be
added to the visited set so that subsequent queries don't use conflicting
pointer values in the cache result blocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61080 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 07:10:09 +00:00
Dan Gohman
812d7506d0 Enable anti-dependence breaking by default when post-RA scheduling is enabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61078 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:21:45 +00:00
Dan Gohman
fde221fa0a When breaking an anti-dependency, don't use a register which has seen 
one of its aliases defined. This is conservative, but tricky subreg
corner cases are outside the primary aim of this pass.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61077 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 06:20:58 +00:00
Dan Gohman
8749b61178 Add initial support for back-scheduling address computations, 
especially in the case of addresses computed from loop induction
variables.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61075 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:35:01 +00:00
Dan Gohman
9a65d6afc2 Remove some special-case logic in ScheduleDAGSDNodes's 
latency computation code that is no longer needed with the
new method for handling latencies.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61074 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:31:11 +00:00
Dan Gohman
3f23744df4 Fix some register-alias-related bugs in the post-RA scheduler liveness 
computation code. Also, avoid adding output-depenency edges when both
defs are dead, which frequently happens with EFLAGS defs.

Compute Depth and Height lazily, and always in terms of edge latency
values. For the schedulers that don't care about latency, edge latencies
are set to 1.

Eliminate Cycle and CycleBound, and LatencyPriorityQueue's Latencies array.
These are all subsumed by the Depth and Height fields.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61073 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:25:46 +00:00
Misha Brukman
64722e5163 * Comply with HTML 4.01 Strict 
* Added code-region markings to code sections to make them stand out
* Added pre.doc_code class to llvm.css to simplify marking code regions


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61072 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 03:07:49 +00:00
Misha Brukman
96e0081251 * Comply with HTML 4.01 Strict standard 
* Converted absolute links to llvm.org/docs to relative links
* Fixed spelling and s/;/:/, as needed


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61071 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 02:54:22 +00:00
Dan Gohman
4ea8e85e19 Add a simple target-independent heuristic to allow targets with no 
instruction itinerary data to back-schedule loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61070 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 02:38:22 +00:00
Dan Gohman
c6b680eee5 Move addPred and removePred out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61067 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:05:52 +00:00
Dan Gohman
ffa391272b Make addPred and removePred return void, since the return value is not 
currently used by anything.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61066 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 01:00:55 +00:00
Dan Gohman
3ee7449f39 This getEdgeAttributes doesn't need a template argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61065 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:55:00 +00:00
Dan Gohman
c3df7a8884 Add a getSDep() access function to SUnitIterator to return the 
current SDep.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61064 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:51:33 +00:00
Dan Gohman
e7c1c660ad Reorder some SDep methods. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61063 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:48:53 +00:00
Dan Gohman
537add3492 SDep's operator== should compare the Latency field too. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61062 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:47:19 +00:00
Bill Wendling
fc953d149f Change so that buildit won't need a parent directory with only the build scripts in them. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61061 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-16 00:42:25 +00:00
Chris Lattner
657084a8ea add testcase for r61051 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61052 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:46:23 +00:00
Chris Lattner
101f44e81f enhance heap-sra to apply to fixed sized array allocations, not just 
variable sized array allocations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61051 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:44:34 +00:00
Mon P Wang
93b3b928d7 Added support for splitting and scalarizing vector shifts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61050 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:44:00 +00:00
Chris Lattner
344b41cfbd Use stripPointerCasts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61047 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:20:32 +00:00
Chris Lattner
49b6d4ae9e minor tweaks for formatting, allow bitcast in ValueIsOnlyUsedLocallyOrStoredToOneGlobal. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61046 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:08:54 +00:00
Chris Lattner
e61d0a626e refactor some code into a new TryToOptimizeStoreOfMallocToGlobal function. 
Use GetElementPtrInst::hasAllZeroIndices where possible.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61045 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 21:02:25 +00:00
Chris Lattner
ca17422158 add a basic test for heap-sra 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61041 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 19:42:05 +00:00
Chris Lattner
1314f20283 Teach basicaa to use the nocapture attribute when possible. When the 
intrinsics are properly marked nocapture, the fixme should be addressed.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61040 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 18:59:22 +00:00
Dan Gohman
464fc5a044 Fix printing of PseudoSourceValues in SDNode graphs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61036 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 17:28:10 +00:00
Dan Gohman
2b00aebda9 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 17:26:50 +00:00
Chris Lattner
582048d5b8 add some more notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61033 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 08:32:28 +00:00
Chris Lattner
8f416f3afd Add a testcase for GCC PR 23455, which lpre handles now. Add some 
comments about why we're not getting other cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61032 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 07:49:24 +00:00
Nick Lewycky
fd7eb7252f Update generated files after nocapture syntax change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61031 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-12-15 07:31:07 +00:00