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path: root/lib/Transforms/Scalar/Reassociate.cpp
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2010-02-10Fix "the the" and similar typos.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95781 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-04Do not reassociate expressions with i1 type. SimplifyCFG converts someBob Wilson
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
2010-01-09only factor from expressions whose uses are empty and whoseChris Lattner
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
2010-01-08Suppress an unused variable warning when assertions are off;Duncan Sands
remove some trailing whitespace while there. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93008 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05fix an infinite loop in reassociate building emacs.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92679 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-05Change errs() to dbgs().David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92617 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-02theoretically the negate we find could be in a different function, checkChris Lattner
for this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92425 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01When factoring multiply expressions across adds, factor both Chris Lattner
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
2010-01-01clean up some comments.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-01switch from std::map to DenseMap for rank data structures.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92375 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31reuse negates where possible instead of always creating them from scratch.Chris Lattner
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
2009-12-31we don't need a smallptrset to detect duplicates, the values areChris Lattner
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
2009-12-31make reassociate more careful about not leaving around dead mul'sChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92370 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31remove debugChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92369 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31teach reassociate to factor x+x+x -> x*3. While I'm at it,Chris Lattner
fix RemoveDeadBinaryOp to actually do something. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92368 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31change reassociate to use SmallVector for its key datastructuresChris Lattner
instead of std::vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92366 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31change an if to an assert, fix comment.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92364 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31move the rest of the add optimization code out to OptimizeAdd,Chris Lattner
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
2009-12-31factor statistic updating better.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92362 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31simple fix for an incorrect factoring which causes aChris Lattner
miscompilation, PR5458. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31factor code out into helper functions.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92347 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31switch some std::vector's to smallvector. Reduce nesting.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92346 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31use more modern datastructures.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92344 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-31clean up -debug output.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92343 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-14Remove LLVMContext from reassociate. It was threaded through every function butNick Lewycky
ultimately never used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88763 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-21Make changes to rev 84292 as requested by Chris Lattner.Victor Hernandez
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
2009-10-17Remove MallocInst from LLVM Instructions.Victor Hernandez
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84299 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-17Autoupgrade malloc insts to malloc calls.Victor Hernandez
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
2009-09-27calls are already unmovable, malloc doesn't need a special case.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82933 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18Enhance transform passes so that they apply the same tranforms to malloc ↵Victor Hernandez
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
2009-09-02eliminate VISIBILITY_HIDDEN from Transforms/Scalar. PR4861Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80766 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23remove the std::ostream version of module and type printing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79823 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-23eliminate the "Value" printing methods that print to a std::ostream.Chris Lattner
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
2009-08-17Fix debug output to include a newline after printing a Value, nowDan Gohman
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
2009-08-12Remove a bunch more now-unnecessary Context arguments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78809 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-31Move a few more APIs back to 2.5 forms. The only remaining ones left to ↵Owen Anderson
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
2009-07-30Move more code back to 2.5 APIs.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77635 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-29Move ConstantExpr to 2.5 API.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77494 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-24Revert the ConstantInt constructors back to their 2.5 forms where possible, ↵Owen Anderson
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
2009-07-22Get rid of the Pass+Context magic.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13These don't really need contexts either.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75528 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Move more functionality over to LLVMContext.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75497 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Begin the painful process of tearing apart the rat'ss nest that is ↵Owen Anderson
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
2009-07-06"LLVMContext* " --> "LLVMContext *"Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74878 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-03Even more passes being LLVMContext'd.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74781 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31Make the key of ValueRankMap an AssertingVH, so that we die violentlyChris Lattner
if it dangles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68150 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-19This pass keeps a map of Instructions to Rank numbers,Dale Johannesen
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
2009-03-06Don't assign rank numbers to debug intrinsic "calls".Dale Johannesen
This is needed so debug info doesn't change codegen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66235 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21Fix build failure.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59844 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-21Silence unused variable warnings.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59841 91177308-0d34-0410-b5e6-96231b3b80d8
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