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2010-11-18Fix an order-of-deallocation issue where the AttrListImpl could be ↵Owen Anderson
deallocated before the global LLVMContext, causing memory errors. Patch by Peter Collingbourne. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Use thread-safe statics to avoid a static constructor here. This isn't ↵Owen Anderson
thread-safe on MSVC, but we don't support threaded LLVM there anyways. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119718 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Oops, missed this file when remaing ExpandPseudos to ExpandISelPseudos.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119717 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Rename ExpandPseudos to ExpandISelPseudos to help clarify its role.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119716 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Completely rework the datastructure GVN uses to represent the value number ↵Owen Anderson
to leader mapping. Previously, this was a tree of hashtables, and a query recursed into the table for the immediate dominator ad infinitum if the initial lookup failed. This led to really bad performance on tall, narrow CFGs. We can instead replace it with what is conceptually a multimap of value numbers to leaders (actually represented by a hashtable with a list of Value*'s as the value type), and then determine which leader from that set to use very cheaply thanks to the DFS numberings maintained by DominatorTree. Because there are typically few duplicates of a given value, this scan tends to be quite fast. Additionally, we use a custom linked list and BumpPtr allocation to avoid any unnecessary allocation in representing the value-side of the multimap. This change brings with it a 15% (!) improvement in the total running time of GVN on 403.gcc, which I think is pretty good considering that includes all the "real work" being done by MemDep as well. The one downside to this approach is that we can no longer use GVN to perform simple conditional progation, but that seems like an acceptable loss since we now have LVI and CorrelatedValuePropagation to pick up the slack. If you see conditional propagation that's not happening, please file bugs against LVI or CVP. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119714 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18ARMPseudoInst instructions should default to being considered a single 4-byteJim Grosbach
instruction. Any that may be expanded otherwise by MC lowering should override this value. rdar://8683274 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119713 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Fix typos.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119712 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Document the units for the Size field.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119711 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Bounds-check APInt's operator[].Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119708 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18ExpandPseudos doesn't have any dependencies, so it can use theDan Gohman
simple form of INITIALIZE_PASS. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Strip trailing whitespace.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119706 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Use llvm_unreachable for "impossible" situations.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119705 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Add support for PHI-translating sext, zext, and trunc instructions,Dan Gohman
enabling more PRE. PR8586. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119704 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18slightly simplify code and substantially improve comment. Instead of Chris Lattner
saying "it would be bad", give an example of what is going on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119695 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18remove a pointless restriction from memcpyopt. It wasChris Lattner
refusing to optimize two memcpy's like this: copy A <- B copy C <- A if it couldn't prove that noalias(B,C). We can eliminate the copy by producing a memmove instead of memcpy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119694 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18filecheckize, this is still not optimal, see PR8643Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119693 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18remove another pointless noalias check: M is a memcpy, so theChris Lattner
source and dest are known to not overlap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119692 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18use AA::isNoAlias instead of open coding it. Remove an extraneous noalias ↵Chris Lattner
check: there is no need to check to see if the source and dest of a memcpy are noalias, behavior is undefined if not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18finish a thought.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119690 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18rearrange some code, splitting memcpy/memcpy optimizationChris Lattner
out of processMemCpy into its own function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18allow eliminating an alloca that is just copied from an constant globalChris Lattner
if it is passed as a byval argument. The byval argument will just be a read, so it is safe to read from the original global instead. This allows us to promote away the %agg.tmp alloca in PR8582 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119686 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18enhance the "alloca is just a memcpy from constant global"Chris Lattner
to ignore calls that obviously can't modify the alloca because they are readonly/readnone. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119683 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18fix a small oversight in the "eliminate memcpy from constant global"Chris Lattner
optimization. If the alloca that is "memcpy'd from constant" also has a memcpy from *it*, ignore it: it is a load. We now optimize the testcase to: define void @test2() { %B = alloca %T %a = bitcast %T* @G to i8* %b = bitcast %T* %B to i8* call void @llvm.memcpy.p0i8.p0i8.i64(i8* %b, i8* %a, i64 124, i32 4, i1 false) call void @bar(i8* %b) ret void } previously we would generate: define void @test() { %B = alloca %T %b = bitcast %T* %B to i8* %G.0 = getelementptr inbounds %T* @G, i32 0, i32 0 %tmp3 = load i8* %G.0, align 4 %G.1 = getelementptr inbounds %T* @G, i32 0, i32 1 %G.15 = bitcast [123 x i8]* %G.1 to i8* %1 = bitcast [123 x i8]* %G.1 to i984* %srcval = load i984* %1, align 1 %B.0 = getelementptr inbounds %T* %B, i32 0, i32 0 store i8 %tmp3, i8* %B.0, align 4 %B.1 = getelementptr inbounds %T* %B, i32 0, i32 1 %B.12 = bitcast [123 x i8]* %B.1 to i8* %2 = bitcast [123 x i8]* %B.1 to i984* store i984 %srcval, i984* %2, align 1 call void @bar(i8* %b) ret void } git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119682 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18filecheckizeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119681 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18trivial QoI improvement. On this invalid input:Chris Lattner
sahf movl 344(%rdi),%r14d we used to produce: t.s:2:1: error: unexpected token in argument list ^ we now produce: t.s:1:11: error: unexpected token in argument list sahf movl 344(%rdi),%r14d ^ rdar://8581401 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119676 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18patch from Frits van Bommel:Chris Lattner
The attached patch fixes IRBuilder and the NoFolder class so that when NoFolder is used the instructions it generates are treated just like the ones IRBuilder creates directly (insert into block, assign them a name and debug info, as applicable). It does this by 1) having NoFolder return Instruction*s instead of Value*s, 2) having IRBuilder call Insert(Value, Name) on values obtained from the folder like it does on instructions it creates directly, and 3) adding an Insert(Constant*, const Twine& = "") overload which just returns the constant so that the other folders shouldn't have any extra overhead as long as inlining is enabled. While I was there, I also added some missing (CreateFNeg and various Create*Cast) methods to NoFolder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119614 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Change CodeGen to use .loc directives. This produces a lot more readable outputRafael Espindola
and testing is easier. A good example is the unknown-location.ll test that now can just look for ".loc 1 0 0". We also don't use a DW_LNE_set_address for every address change anymore. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Silence compiler warnings.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119610 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Remove trailing whitespace.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119608 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18ARM PseudoInst instructions don't need or use an assembler string. Get rid ofJim Grosbach
the operand to the pattern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Revert 119600 to unbreak the build. Francois, please investigate.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119606 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Do not throw away alignment when generating the DAG forDale Johannesen
memset; we may need it to decide between MOVAPS and MOVUPS later. Adjust a test that was looking for wrong code. PR 3866 / 8675131. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119605 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119604 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Add FIXME.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119603 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Refactor the ARM PICADD and PICLDR* instructions to really be pseudos and notJim Grosbach
just pretend to be. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119602 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Try again at providing Thumb2 encodings for basic multiplication operators.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119601 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Appease MSVC 2008: you can't use keyword this inside EXPECT_EQ().Francois Pichet
This is because of bug 331418 on Microsoft Connect. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119600 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Fixed to use input redirection for source - to eliminate .s output.John Thompson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119599 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Refactor a few ARM load instructions to better parameterize things and re-useJim Grosbach
common encoding information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119598 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Revert r119593 while I figure out my testing disagrees with the buildbot.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119597 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Introduce memoization for ScalarEvolution dominates and properlyDominatesDan Gohman
queries, and SCEVExpander getRelevantLoop queries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Provide correct Thumb2 encodings for basic multiplication operators.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119593 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-18Updated library dependencies.Oscar Fuentes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119592 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Bug 8621 fix - pointer cast stripped from inline asm constraint argument.John Thompson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119590 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Make MCJIT work with CMake.Wesley Peck
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119589 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Clean up LEApcrel instuction(s) a bit. It's not really a Pseudo, so don't markJim Grosbach
it as such. Add some encoding information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119588 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Factor out the code for purging a SCEV from all the various memoization maps.Dan Gohman
Some of these maps may merge in the future, but for now it's convenient to have a utility function for them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119587 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Merge the implementations of isLoopInvariant and hasComputableLoopEvolution, andDan Gohman
memoize the results. This improves compile time in code which highly complex expressions which get queried many times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Now that the MBlaze backend is in its own directory, split the test cases ↵Wesley Peck
into multiple files for different types of instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-11-17Make SCEV::getType() and SCEV::print non-virtual. Move SCEV::hasOperandDan Gohman
to ScalarEvolution. Delete SCEV::~SCEV. SCEV is no longer virtual. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119578 91177308-0d34-0410-b5e6-96231b3b80d8
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