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146 Commits

Author SHA1 Message Date
Chris Lattner
893075f46e fix a nice subtle reassociate bug which would only occur 
in a very specific use pattern embodied in the carefully
reduced testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97794 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 07:18:54 +00:00
Duncan Sands
1df9859c40 There are two ways of checking for a given type, for example isa<PointerType>(T) 
and T->isPointerTy().  Convert most instances of the first form to the second form.
Requested by Chris.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-16 11:11:14 +00:00
Duncan Sands
b0bc6c361d Uniformize the names of type predicates: rather than having isFloatTy and 
isInteger, we now have isFloatTy and isIntegerTy.  Requested by Chris!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96223 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-15 16:12:20 +00:00
Dan Gohman
f451cb870e Fix "the the" and similar typos. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-10 16:03:48 +00:00
Bob Wilson
fc375d2200 Do not reassociate expressions with i1 type. SimplifyCFG converts some 
short-circuited conditions to AND/OR expressions, and those expressions
are often converted back to a short-circuited form in code gen.  The
original source order may have been optimized to take advantage of the
expected values, and if we reassociate them, we change the order and
subvert that optimization.  Radar 7497329.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95333 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-04 23:32:37 +00:00
Chris Lattner
c2d1b6949c only factor from expressions whose uses are empty and whose 
base is the right expression type.  This fixes PR5981.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-09 06:01:36 +00:00
Duncan Sands
54a57045eb Suppress an unused variable warning when assertions are off; 
remove some trailing whitespace while there.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93008 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-08 17:51:48 +00:00
Chris Lattner
5f94af0f72 fix an infinite loop in reassociate building emacs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92679 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 04:55:35 +00:00
David Greene
a1fa76cb54 Change errs() to dbgs(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92617 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-05 01:27:24 +00:00
Chris Lattner
1c91fae649 theoretically the negate we find could be in a different function, check 
for this case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92425 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-02 21:46:33 +00:00
Chris Lattner
9506c930aa When factoring multiply expressions across adds, factor both 
positive and negative forms of constants together.  This 
allows us to compile:

int foo(int x, int y) {
    return (x-y) + (x-y) + (x-y);
}

into:

_foo:                                                       ## @foo
	subl	%esi, %edi
	leal	(%rdi,%rdi,2), %eax
	ret

instead of (where the 3 and -3 were not factored):

_foo:
        imull   $-3, 8(%esp), %ecx
        imull   $3, 4(%esp), %eax
        addl    %ecx, %eax
        ret

this started out as:
    movl    12(%ebp), %ecx
    imull   $3, 8(%ebp), %eax
    subl    %ecx, %eax
    subl    %ecx, %eax
    subl    %ecx, %eax
    ret

This comes from PR5359.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92381 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 01:13:15 +00:00
Chris Lattner
9046193e55 clean up some comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92377 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 00:04:26 +00:00
Chris Lattner
f55e7f54b1 switch from std::map to DenseMap for rank data structures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92375 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-01 00:01:34 +00:00
Chris Lattner
3523993451 reuse negates where possible instead of always creating them from scratch. 
This allows us to optimize test12 into:

define i32 @test12(i32 %X) {
  %factor = mul i32 %X, -3                        ; <i32> [#uses=1]
  %Z = add i32 %factor, 6                         ; <i32> [#uses=1]
  ret i32 %Z
}

instead of:

define i32 @test12(i32 %X) {
  %Y = sub i32 6, %X                              ; <i32> [#uses=1]
  %C = sub i32 %Y, %X                             ; <i32> [#uses=1]
  %Z = sub i32 %C, %X                             ; <i32> [#uses=1]
  ret i32 %Z
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92373 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 20:34:32 +00:00
Chris Lattner
f31e2e92a8 we don't need a smallptrset to detect duplicates, the values are 
sorted, so we can just do a linear scan.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92372 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 19:49:01 +00:00
Chris Lattner
1e7558b656 make reassociate more careful about not leaving around dead mul's 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92370 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 19:34:45 +00:00
Chris Lattner
f8a447de16 remove debug 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92369 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 19:25:19 +00:00
Chris Lattner
69e98e2c0f teach reassociate to factor x+x+x -> x*3. While I'm at it, 
fix RemoveDeadBinaryOp to actually do something.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92368 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 19:24:52 +00:00
Chris Lattner
9f7b7089be change reassociate to use SmallVector for its key datastructures 
instead of std::vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92366 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 18:40:32 +00:00
Chris Lattner
9cd1bc4f8b change an if to an assert, fix comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92364 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 18:18:46 +00:00
Chris Lattner
94285e620b move the rest of the add optimization code out to OptimizeAdd, 
improve some comments, simplify a bit of code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92363 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 18:17:13 +00:00
Chris Lattner
9fdaefad58 factor statistic updating better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 17:51:05 +00:00
Chris Lattner
13a754ce92 simple fix for an incorrect factoring which causes a 
miscompilation, PR5458.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92354 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 08:33:49 +00:00
Chris Lattner
f3f55a9bc1 factor code out into helper functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92347 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 07:59:34 +00:00
Chris Lattner
8d93b259f6 switch some std::vector's to smallvector. Reduce nesting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92346 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 07:48:51 +00:00
Chris Lattner
ec531233a1 use more modern datastructures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92344 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 07:33:14 +00:00
Chris Lattner
1befe643b2 clean up -debug output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92343 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-31 07:17:37 +00:00
Nick Lewycky
e79fddedca Remove LLVMContext from reassociate. It was threaded through every function but 
ultimately never used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-14 07:25:54 +00:00
Victor Hernandez
68afa54033 Make changes to rev 84292 as requested by Chris Lattner. 
Most changes are cleanup, but there is 1 correctness fix:
I fixed InstCombine so that the icmp is removed only if the malloc call is removed (which requires explicit removal because the Worklist won't DCE any calls since they can have side-effects).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 19:11:40 +00:00
Victor Hernandez
a276c603b8 Remove MallocInst from LLVM Instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 01:18:07 +00:00
Victor Hernandez
13ad5aaaff Autoupgrade malloc insts to malloc calls. 
Update testcases that rely on malloc insts being present.

Also prematurely remove MallocInst handling from IndMemRemoval and RaiseAllocations to help pass tests in this incremental step.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84292 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 00:00:19 +00:00
Chris Lattner
06e4052699 calls are already unmovable, malloc doesn't need a special case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82933 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-27 21:36:19 +00:00
Victor Hernandez
83d63919bd Enhance transform passes so that they apply the same tranforms to malloc calls as to MallocInst. 
Reviewed by Dan Gohman.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82300 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-18 22:35:49 +00:00
Chris Lattner
3e8b6631e6 eliminate VISIBILITY_HIDDEN from Transforms/Scalar. PR4861 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80766 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-02 06:11:42 +00:00
Chris Lattner
79c5d3f971 remove the std::ostream version of module and type printing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79823 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-23 04:52:46 +00:00
Chris Lattner
bdff548e4d eliminate the "Value" printing methods that print to a std::ostream. 
This required converting a bunch of stuff off DOUT and other cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79819 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-23 04:37:46 +00:00
Dan Gohman
8732577230 Fix debug output to include a newline after printing a Value, now 
that Value's operator<< doesn't include one.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79240 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-17 15:25:05 +00:00
Dan Gohman
4ae5126d04 Remove a bunch more now-unnecessary Context arguments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78809 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-12 16:23:25 +00:00
Owen Anderson
a7235ea724 Move a few more APIs back to 2.5 forms. The only remaining ones left to change back are 
metadata related, which I'm waiting on to avoid conflicting with Devang.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77721 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-31 20:28:14 +00:00
Owen Anderson
9e9a0d5fc2 Move more code back to 2.5 APIs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77635 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-30 23:03:37 +00:00
Owen Anderson
baf3c40440 Move ConstantExpr to 2.5 API. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77494 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-29 18:55:55 +00:00
Owen Anderson
eed707b1e6 Revert the ConstantInt constructors back to their 2.5 forms where possible, thanks to contexts-on-types. More to come. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77011 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-24 23:12:02 +00:00
Owen Anderson
e922c02019 Get rid of the Pass+Context magic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-22 00:24:57 +00:00
Owen Anderson
fa82b6eba4 These don't really need contexts either. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75528 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-13 22:18:28 +00:00
Owen Anderson
73c6b7127a Move more functionality over to LLVMContext. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75497 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-13 20:58:05 +00:00
Owen Anderson
0a5372ed3e Begin the painful process of tearing apart the rat'ss nest that is Constants.cpp and ConstantFold.cpp. 
This involves temporarily hard wiring some parts to use the global context.  This isn't ideal, but it's
the only way I could figure out to make this process vaguely incremental.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75445 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-13 04:09:18 +00:00
Owen Anderson
07cf79ef53 "LLVMContext* " --> "LLVMContext *" 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74878 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-06 23:00:19 +00:00
Owen Anderson
fa5cbd6d0f Even more passes being LLVMContext'd. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74781 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-03 19:42:02 +00:00
Chris Lattner
d3c7b7359d Make the key of ValueRankMap an AssertingVH, so that we die violently 
if it dangles.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68150 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-31 22:13:29 +00:00
Dale Johannesen
f4978e2094 This pass keeps a map of Instructions to Rank numbers, 
and was deleting Instructions without clearing the
corresponding map entry.  This led to nondeterministic
behavior if the same address got allocated to another
Instruction within a short time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67306 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-19 17:22:53 +00:00