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2009-11-02fix instcombine to only do store sinking when the alignmentsChris Lattner
of the two loads agree. Propagate that onto the new store. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85772 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02merge a test into store.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85771 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02convert to filecheckChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85770 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Add missing end-tag.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85769 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Some formatting changes.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85768 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Handle splats of undefs properly. This includes the testcase for PR5364 as well.Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85767 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Do not infer the target type for COPY_TO_REGCLASS from dest regclass, this ↵Anton Korobeynikov
won't work if it can contain several types. Require explicit result type for the node for now. This fixes PR5364. PS: It seems that blackfin usage of copy_to_regclass is completely bogus! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85766 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-0264-bit FP loads & stores operate on both NEON and VFP pipelines.Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85765 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-02Use NEON reg-reg moves, where profitable. This reduces "domain-cross" ↵Anton Korobeynikov
stalls, when we used to mix vfp and neon code (the former were used for reg-reg moves) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85764 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Add PseudoSourceValue::mayAlias. It returns true if the object can ever ↵Evan Cheng
alias any LLVM IR value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85762 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Line this up as well.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85748 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Fix whitespace.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85747 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Fix a couple more places where we are creating ld / st instructions without ↵Evan Cheng
memoperands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85746 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Make use of imm12 version of Thumb2 ldr / str instructions more aggressively.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85743 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01fix two strange things in the default passmgr:Chris Lattner
1. we'd run simplifycfg at the very start, even though the per function passes have already cleaned this up. 2. In the main per-function pipeline that is interlaced with inlining etc, we would do instcombine, jump threading, simplifycfg *before* doing SROA. SROA is much more likely to expose opportunities for these passes than they are for SROA, so move SRoA up earlier. also add some comments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85742 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01merge phi-merge.ll into phi.llChris Lattner
I don't know what Dan wants to do with phi-merge-gep.ll, I'll let him deal with it because instcombine may end up sinking these. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85739 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01when merging two loads, make sure to take the min of their alignment,Chris Lattner
not the max. This didn't matter until the previous patch because instcombine would refuse to sink loads with differenting alignments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85738 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01split load sinking out to its own function, like gep sinking.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85737 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01fix a bug noticed by inspection: when instcombine sinks loads throughChris Lattner
phis, it didn't preserve the alignment of the load. This is a missed optimization of the alignment is high and a miscompilation when the alignment is low. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85736 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01IPSCCP apparently is not a superset of IPCP, this is bad,Chris Lattner
but I'll investigate it separately. This unbreaks test/FrontendC/weak_constant.c git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85735 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01convert to filecheck.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85734 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Improve the other instance of the comment.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85733 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Add a missing closing parenthesis, and tweak to fit in 80Duncan Sands
columns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85732 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01only run GlobalDCE at -O3 and run it late instead of early.Chris Lattner
GlobalOpt already deletes trivially dead functions/globals, so GlobalDCE only adds values for cycles of dead things. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85731 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01cleanups, switch GlobalDCE to SmallPtrSet instead of std::setChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85730 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01We currently only run ipsccp at LTO time, which is silly. It subsumesChris Lattner
ipconstprop and doesn't take much time. Just run it in its place. This adds a testcase for it, which I plan to expand to cover other "integration" cases, where we expect the optimizer to be able to eliminate various things. Due to phase order issues we've regressed in a number of areas and integration tests are the only way I see to prevent this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85729 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01remove a bunch of locking from LLVMContextImpl. Since only one threadChris Lattner
can be banging on a context at a time, this isn't needed. Owen, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85728 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01improve comment.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85725 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01add a comment about why we don't allow inlining indbr.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85724 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Fix tests.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85723 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01the verifier shouldn't modify the IR.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85722 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Reverting 85714, 85715, 85716, which are breaking the buildDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85717 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Add a function to Passes.h to allow clients to create instancesDan Gohman
of the ScalarEvolution pass without needing to #include ScalarEvolution.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85716 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Don't #include Pass.h from CallGraph.h.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85715 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Remove the #include of Pass.h from PassManager.h. This breaks a significantDan Gohman
#include dependency, as frontends commonly pull in PassManager.h. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85714 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01teach ipsccp and ipconstprop that a blockaddress doesn't 'take the address' ↵Chris Lattner
of a function in a way that should prevent ip constprop. This allows clang/test/CodeGen/indirect-goto.c to pass with the new indirect goto lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85709 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01change llvm::MergeBlockIntoPredecessor to not merge two blocks BB1->BB2 Chris Lattner
when BB2 has its address taken. Since it ends up doing BB2->rauw(BB1), this can cause the address of the entry block to be taken. Since it is generally undesirable to nuke blocks whose address is taken, even when we can, just unconditionally stop this xform. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85708 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01strengthen an assumption: RevectorBlockTo knows that PredBB Chris Lattner
ended in an uncond branch because the pass requires BreakCriticalEdges. However, BCE doesn't eliminate critical adges from indbrs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85707 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01fix an issue where the verifier would reject a function whose entryChris Lattner
block had its address taken even if the blockaddress was dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85706 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01if CostMetrics says to never duplicate some code, don't unswitch a loop.Chris Lattner
This prevents unswitching from duplicating indbr's. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85705 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01constant fold indirectbr(blockaddress(%bb)) -> br label %bb.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85704 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01improve x86 codegen support for blockaddress. We now compileChris Lattner
the testcase into: _test1: ## @test1 ## BB#0: ## %entry leaq L_test1_bb6(%rip), %rax jmpq *%rax L_test1_bb: ## Address Taken LBB1_1: ## %bb movb $1, %al ret L_test1_bb6: ## Address Taken LBB1_2: ## %bb6 movb $2, %al ret Note, it is very very strange that BlockAddressSDNode doesn't carry around TargetFlags. Dan, please fix this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85703 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01pull check for return inst out of loop, never inline a callee that containsChris Lattner
an indirectbr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Fix BlockAddress::replaceUsesOfWithOnConstant to correctly Chris Lattner
maintain the block use count in SubclassData. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85701 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01implement linker support for BlockAddress.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85700 91177308-0d34-0410-b5e6-96231b3b80d8
2009-11-01Revert 85678/85680. The decision is to stay with the current form of Chris Lattner
indirectbr, thus we don't need "blockaddr(@func, null)". Eliminate it for simplicity. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85699 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31Use cbz and cbnz instructions.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85698 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31vml[as].f32 cause stalls in following advanced SIMD instructions. Avoid usingJim Grosbach
them for scalar floating point operations for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85697 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31Consolidate test filesJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85696 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-31Change to use FileCheckJim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85695 91177308-0d34-0410-b5e6-96231b3b80d8
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