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6249 Commits

Author SHA1 Message Date
Benjamin Kramer
66b581ef49 Use a do-while loop instead of while + boolean. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92912 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-07 13:50:07 +00:00
Duncan Sands
5d8ea117a0 Be less stingy as to how many selects and phi nodes we 
are prepared to look through.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92898 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-07 05:48:42 +00:00
Chris Lattner
4039bd0550 handle ConstantVector while I'm in here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92892 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-07 01:20:20 +00:00
Chris Lattner
a0e9a2475c fix a globalopt crash on 'bullet' (handling evaluation of a store 
to an element of a vector in a static ctor) which occurs with an 
unrelated patch I'm testing.  Annoyingly, EvaluateStoreInto basically 
does exactly the same stuff as InsertElement constant folding, but it
now handles vectors, and you can't insertelement into a vector.  It
would be 'really nice' if GEP into a vector were not legal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-07 01:16:21 +00:00
Eric Christopher
130063207d Move the object size intrinsic optimization to inst-combine and make 
it work for any integer size return type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92853 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 20:04:44 +00:00
Duncan Sands
e10920d678 Fix a README item: have functionattrs look through selects and 
phi nodes when deciding which pointers point to local memory.
I actually checked long ago how useful this is, and it isn't
very: it hardly ever fires in the testsuite, but since Chris
wants it here it is!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 15:37:47 +00:00
Mikhail Glushenkov
0ecbdeb14f Formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92831 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 09:20:39 +00:00
Duncan Sands
7c422ac216 Partially address a README by having functionattrs consider calls to 
memcpy, memset and other intrinsics that only access their arguments
to be readnone if the intrinsic's arguments all point to local memory.
This improves the testcase in the README to readonly, but it could in
theory be made readnone, however this would involve more sophisticated
analysis that looks through the memcpy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92829 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 08:45:52 +00:00
Chris Lattner
5c24a6da29 tweaks suggested by Duncan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92824 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 05:32:15 +00:00
Chris Lattner
e0e4cc7fd5 Teach instcombine's sext elimination logic to be more aggressive. 
Previously, instcombine would only promote an expression tree to
the larger type if doing so eliminated two casts.  This is because
a need to manually do the sign extend after the promoted expression
tree with two shifts.  Now, we keep track of whether the result of
the computation is going to be properly sign extended already.  If
so, we can unconditionally promote the expression, which allows us
to zap more sext's.

This implements rdar://6598839 (aka gcc pr38751)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92815 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-06 01:56:21 +00:00
Chris Lattner
68c6e8998b simplify this code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92800 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 23:00:30 +00:00
Chris Lattner
94aab49339 make this a static function instead of a method. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92795 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 22:30:42 +00:00
Chris Lattner
7a34d6c450 more rearrangement and cleanup, fix my test failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92792 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 22:21:18 +00:00
Chris Lattner
274ad68cc7 cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92790 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 22:07:33 +00:00
Chris Lattner
c0f79af143 remove two trunc xforms that are subsumed by EvaluateInDifferentType. 
The only difference is that EvaluateInDifferentType checks to ensure
they are profitable before doing them :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92788 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 22:01:41 +00:00
Chris Lattner
464dc81803 just remove this xform which is subsumed by others. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92775 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 21:16:30 +00:00
Chris Lattner
49bdfefc8d move a trunc-specific transform out of commonIntCastTransforms into visitTrunc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92773 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 21:11:17 +00:00
Benjamin Kramer
8c65f6e71c Move remaining stuff to the isInteger predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92771 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 21:05:54 +00:00
Chris Lattner
718bf3f89d move a zext specific xform out of commonIntCastTransforms into visitZExt and modernize it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92770 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 21:04:47 +00:00
Chris Lattner
f86d799a29 move a trunc-specific xform out of commonIntCastTransforms into visitTrunc 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92768 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 20:57:30 +00:00
Chris Lattner
3168c7dd25 reduce indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92766 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 20:56:24 +00:00
Benjamin Kramer
11acaa374c Convert a ton of simple integer type equality tests to the new predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92760 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 20:07:06 +00:00
Chris Lattner
033574074d optimize comparisons against cttz/ctlz/ctpop, patch by Alastair Lynn! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92745 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 18:09:56 +00:00
Dan Gohman
ba25f0924e Nick Lewycky pointed out that this code makes changes unconditionally. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 17:50:58 +00:00
Dan Gohman
9fff2187a2 Set Changed properly after calling DeleteDeadPHIs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92735 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 16:31:45 +00:00
Dan Gohman
321a813c53 Use do+while instead of while for loops which obviously have a 
non-zero trip count. Use SmallVector's pop_back_val().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92734 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 16:27:25 +00:00
Dan Gohman
b7a9f2b504 Fix indentation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92733 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 16:20:55 +00:00
Dan Gohman
90fe0bd68c Make RecursivelyDeleteTriviallyDeadInstructions, 
RecursivelyDeleteDeadPHINode, and DeleteDeadPHIs return a flag
indicating whether they made any changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92732 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 15:45:31 +00:00
Benjamin Kramer
eade002094 Add newline at EOF. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92727 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 13:32:48 +00:00
Benjamin Kramer
f012705c7e Avoid going through the LLVMContext for type equality where it's safe to dereference the type pointer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92726 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 13:12:22 +00:00
Chris Lattner
804272c8d6 prune some #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92712 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:54:43 +00:00
Chris Lattner
25f2a23b4a split and/or/xor out into one overly-large (2000LOC) file. However, I think 
it does make sense to keep them together, at least for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92711 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:50:36 +00:00
Chris Lattner
d3c5b2d322 missed file with previous commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:45:02 +00:00
Chris Lattner
9cdd5f3fe3 split instcombine of shifts out to its own file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:44:46 +00:00
Chris Lattner
948cdeba97 eliminate getBitCastOperand and simplify some over-complex inbounds stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92708 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:42:10 +00:00
Chris Lattner
753a2b464d split call handling out to InstCombineCalls.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92707 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:32:13 +00:00
Chris Lattner
16507fe9fd optimize cttz and ctlz when we can prove something about the 
leading/trailing bits.  Patch by Alastair Lynn!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92706 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:23:56 +00:00
Chris Lattner
f87cd93e0c this inline function moved to addsub 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92705 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:20:54 +00:00
Chris Lattner
53a19b73b5 split add/sub out to its own file. Eliminate use of 
dyn_castNotVal in the X+~X transform.  dyn_castNotVal is
dramatic overkill for what the xform needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92704 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:18:46 +00:00
Chris Lattner
248a84beb3 all the places we use hasOneUse() we know are instructions, so inline 
and simplify.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92700 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:04:23 +00:00
Chris Lattner
dea34da6f8 eliminate AssociativeOpt and its last uses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92697 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 07:01:16 +00:00
Chris Lattner
a317e044fb inline the FoldICmpLogical functor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92695 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:59:49 +00:00
Chris Lattner
32c0cf5af9 inline the 'AddRHS' transformation, simplifying things significantly. 
Eliminate the 'AddMaskingAnd' transformation, it is redundant with this
more general code right below it:
  // A+B --> A|B iff A and B have no bits set in common.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92693 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:29:13 +00:00
Chris Lattner
d0db8e8bad remove massive over-genality manifested as a big template 
that got instantiated.  There is no reason for instcombine
to try this hard for simple associative optimizations.  Next
up, eliminate the template completely.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92692 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:24:06 +00:00
Chris Lattner
d12c27ce00 split mul/div/rem instructions out to their own file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92689 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:09:35 +00:00
Chris Lattner
1c22c80d71 clean up header. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92688 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:05:07 +00:00
Chris Lattner
c6334b97e1 split select out to its own file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92687 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 06:03:12 +00:00
Chris Lattner
8d9b8d717e split out load/store/alloca. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92685 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 05:57:49 +00:00
Chris Lattner
d5da271863 reduce indentation 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92684 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 05:42:08 +00:00
Chris Lattner
b8a5cecd6b split vector stuff out to InstCombineVectorOps.cpp 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92683 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 05:36:20 +00:00