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2006-11-02For PR786:Reid Spencer
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting fall out by removing unused variables. Remaining warnings have to do with unused functions (I didn't want to delete code without review) and unused variables in generated code. Maintainers should clean up the remaining issues when they see them. All changes pass DejaGnu tests and Olden. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-31generalize the fix for PR977 to also fixChris Lattner
Transforms/LCSSA/2006-10-31-UnreachableBlock-2.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31317 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-31Fix PR977 and Transforms/LCSSA/2006-10-31-UnreachableBlock.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31315 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-29Fix SimplifyCFG/2006-10-29-InvokeCrash.ll, a crash compiling QT.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31284 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-28add option to isCriticalEdgeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31258 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-28Expose a smarter way to break critical edges.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31256 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20For PR950:Reid Spencer
This patch implements the first increment for the Signless Types feature. All changes pertain to removing the ConstantSInt and ConstantUInt classes in favor of just using ConstantInt. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31063 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-20Fix SimplifyCFG/2006-10-19-UncondDiv.ll by disabling a bad xform.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31061 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-04This case isn't implemented yet. It seems unlikely to be needed, but if itChris Lattner
ever is, we want to get an assert instead of silent bad codegen. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30716 91177308-0d34-0410-b5e6-96231b3b80d8
2006-10-03Fix PR932 and Analysis/Dominators/2006-10-02-BreakCritEdges.ll:Chris Lattner
The critical edge block dominates the dest block if the destblock dominates all edges other than the one incoming from the critical edge. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30696 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-28simplify codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30656 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-23Be far more careful when splitting a loop header, either to form a preheaderChris Lattner
or when splitting loops with a common header into multiple loops. In particular the old code would always insert the preheader before the old loop header. This is disasterous in cases where the loop hasn't been rotated. For example, it can produce code like: .. outside the loop... jmp LBB1_2 #bb13.outer LBB1_1: #bb1 movsd 8(%esp,%esi,8), %xmm1 mulsd (%edi), %xmm1 addsd %xmm0, %xmm1 addl $24, %edi incl %esi jmp LBB1_3 #bb13 LBB1_2: #bb13.outer leal (%edx,%eax,8), %edi pxor %xmm1, %xmm1 xorl %esi, %esi LBB1_3: #bb13 movapd %xmm1, %xmm0 cmpl $4, %esi jl LBB1_1 #bb1 Note that the loop body is actually LBB1_1 + LBB1_3, which means that the loop now contains an uncond branch WITHIN it to jump around the inserted loop header (LBB1_2). Doh. This patch changes the preheader insertion code to insert it in the right spot, producing this code: ... outside the loop, fall into the header ... LBB1_1: #bb13.outer leal (%edx,%eax,8), %esi pxor %xmm0, %xmm0 xorl %edi, %edi jmp LBB1_3 #bb13 LBB1_2: #bb1 movsd 8(%esp,%edi,8), %xmm0 mulsd (%esi), %xmm0 addsd %xmm1, %xmm0 addl $24, %esi incl %edi LBB1_3: #bb13 movapd %xmm0, %xmm1 cmpl $4, %edi jl LBB1_2 #bb1 Totally crazy, no branch in the loop! :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30587 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-23Teach UpdateDomInfoForRevectoredPreds to handle revectored preds that are notChris Lattner
reachable, making it general purpose enough for use by InsertPreheaderForLoop. Eliminate custom dominfo updating code in InsertPreheaderForLoop, using UpdateDomInfoForRevectoredPreds instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30586 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-13Second half of the fix for Transforms/Inline/inline_cleanup.llChris Lattner
This folds unconditional branches that are often produced by code specialization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30307 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-13Implement the first half of Transforms/Inline/inline_cleanup.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30303 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-05Fix Duraid's changes to work when TLI is null. This fixes the failingChris Lattner
lowerinvoke regtests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-04add setJumpBufSize() and setJumpBufAlignment() to target-lowering.Duraid Madina
Call these from your backend to enjoy setjmp/longjmp goodness, see lib/Target/IA64/IA64ISelLowering.cpp for an example git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30095 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27eliminate RegisterOpt. It does the same thing as RegisterPass.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29925 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-27s|llvm/Support/Visibility.h|llvm/Support/Compiler.h|Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29911 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-12Don't attempt to split subloops out of a loop with a huge number of backedges.Chris Lattner
Not only will this take huge amounts of compile time, the resultant loop nests won't be useful for optimization. This reduces loopsimplify time on Transforms/LoopSimplify/2006-08-11-LoopSimplifyLongTime.ll from ~32s to ~0.4s with a debug build of llvm on a 2.7Ghz G5. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29647 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-12Reimplement the loopsimplify code which deletes edges from unreachableChris Lattner
blocks that target loop blocks. Before, the code was run once per loop, and depended on the number of predecessors each block in the loop had. Unfortunately, scanning preds can be really slow when huge numbers of phis exist or when phis with huge numbers of inputs exist. Now, the code is run once per function and scans successors instead of preds, which is far faster. In addition, the new code is simpler and is goto free, woo. This change speeds up a nasty testcase Duraid provided me from taking hours to taking ~72s with a debug build. The functionality this implements is already tested in the testsuite as Transforms/CodeExtractor/2004-03-13-LoopExtractorCrash.ll. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29644 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-03Fix PR867 (and maybe 868) and testcsae:Chris Lattner
Transforms/SimplifyCFG/2006-08-03-Crash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29515 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-02Add special check to avoid isLoop call. Simple, but doesn't seem to speedChris Lattner
up lcssa much in practice. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29465 91177308-0d34-0410-b5e6-96231b3b80d8
2006-08-02Replace the SSA update code in LCSSA with a bottom-up approach instead of a topChris Lattner
down approach, inspired by discussions with Tanya. This approach is significantly faster, because it does not need dominator frontiers and it does not insert extraneous unused PHI nodes. For example, on 252.eon, in a release-asserts build, this speeds up LCSSA (which is the slowest pass in gccas) from 9.14s to 0.74s on my G5. This code is also slightly smaller and significantly simpler than the old code. Amusingly, in a normal Release build (which includes the "assert(L->isLCSSAForm());" assertion), asserting that the result of LCSSA is in LCSSA form is actually slower than the LCSSA transformation pass itself on 252.eon. I will see if Loop::isLCSSAForm can be sped up next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29463 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-18silence warnings in a release buildChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29189 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-14eliminate some ugly code, using ConstantExpr::getWithOperands instead.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29149 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12Handle instructions in the map, but that map to a null pointer.Chris Lattner
This unbreaks smg2000. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29127 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12In addition to deleting calls, the inliner can constant fold them as well.Chris Lattner
Handle this case, which doesn't require a new callgraph edge. This fixes a crash compiling MallocBench/gs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29121 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-12Change the callgraph representation to store the callsite along with theChris Lattner
target CG node. This allows the inliner to properly update the callgraph when using the pruning inliner. The pruning inliner may not copy over all call sites from a callee to a caller, so the edges corresponding to those call sites should not be copied over either. This fixes PR827 and Transforms/Inline/2006-07-12-InlinePruneCGUpdate.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29120 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-09Fix typo in the comment.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29078 91177308-0d34-0410-b5e6-96231b3b80d8
2006-07-09Add a fix for an issue where LCSSA would fail to insert undef's in some cornerOwen Anderson
cases. Ideally, this issue will go away in the future as LCSSA gets smarter about which Phi nodes it inserts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29076 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Use hidden visibility to make symbols in an anonymous namespace getChris Lattner
dropped. This shrinks libllvmgcc.dylib another 67K git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28975 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-28Shrink libllvmgcc.dylib by another 23KChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28972 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-14Use the PotDoms map to memoize 'dominating value' lookup. With this patch,Chris Lattner
LCSSA is still the slowest pass when gccas'ing 252.eon, but now it only takes 39s instead of 289s. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28776 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-13Fix another instance where PHI nodes need special treatment.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28774 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-13Fix a bug that was causing major slowdowns in povray. This was due to LCSSAOwen Anderson
not handling PHI nodes correctly when determining if a value was live-out. This patch reduces the number of detected live-out variables in the testcase from 6565 to 485. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28771 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12Fix an infinite loop on Transforms/SimplifyCFG/2006-06-12-InfLoop.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28758 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-12Fix for 2006-06-26-MultipleExitsSingleBlock.Owen Anderson
If a single exit block has multiple predecessors within the loop, it will appear in the exit blocks list more than once. LCSSA needs to take that into account so that it doesn't double process that exit block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28750 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-11Re-commit the safe parts of my 6/9 patch. Still working on fixing the ↵Owen Anderson
unsafe parts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28748 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-11Back out Owen's 6/9 changes. They broke ↵Evan Cheng
MultiSource/Benchmarks/Prolangs-C/bison (and perhaps others). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28747 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-09Make Loop able to verify that it is in LCSSA-form, and have the LCSSA pass ↵Owen Anderson
assert on this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28738 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-08Update some comments, and expose LCSSAID in preparation for having other passesOwen Anderson
require LCSSA. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28734 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-06Fix some formatting, and use inLoop() when appropriate.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28694 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-06Stop a memory leak, and update some comments.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28693 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-04Some more clean-up, and squash an IDF-Phi related bug.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28680 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-04Various clean-ups suggested by Chris.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28678 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-03Fix a bug in Phi-noded insertion. Also, update some comments to reflect what'sOwen Anderson
actually going on. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28677 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-02Force anything that #includes llvm/Transforms/Utils/UnifyFunctionExitNodes.hChris Lattner
to link in the implementation. Thanks to Anton Korobeynikov for figuring out what was going on here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28660 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-01Remove dead #includeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28642 91177308-0d34-0410-b5e6-96231b3b80d8
2006-06-01Make the "pruning cloner" smarter. As it propagates constants through theChris Lattner
code (while cloning) it often gets the branch/switch instructions. Since it knows that edges of the CFG are dead, it need not clone (or even look) at the obviously dead blocks. This should speed up the inliner substantially on code where there are lots of inlinable calls to functions with constant arguments. On C++ code in particular, this kicks in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28641 91177308-0d34-0410-b5e6-96231b3b80d8
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