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2005-10-11Fix another problem where LSR was being nondeterminstic. Also remove elementsChris Lattner
from the end of a vector instead of the beginning git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23697 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-11lsr doesn't emit gep instructions anymoreChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23696 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-11Fix another lsr-is-nondeterministic caseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23695 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-11Fix a powerpc crash on CodeGen/Generic/llvm-ct-intrinsics.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23694 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-11Add a canonicalization that got lost, fixing PowerPC/fold-li.ll:SUBChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23693 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10clean up some corner casesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23692 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Implement trivial DSE. If two stores are neighbors and store to the sameChris Lattner
location, replace them with a new store of the last value. This occurs in the same neighborhood in 197.parser, speeding it up about 1.5% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23691 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Add support for CombineTo, allowing the dag combiner to replace nodes withChris Lattner
multiple results. Use this support to implement trivial store->load forwarding, implementing CodeGen/PowerPC/store-load-fwd.ll. Though this is the most simple case and can be extended in the future, it is still useful. For example, it speeds up 197.parser by 6.2% by avoiding an LSU reject in xalloc: stw r6, lo16(l5_end_of_array)(r2) addi r2, r5, -4 stwx r5, r4, r2 - lwzx r5, r4, r2 - rlwinm r5, r5, 0, 0, 30 stwx r5, r4, r2 lwz r2, -4(r4) ori r2, r2, 1 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23690 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10new testcaseChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23689 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Teach the DAGCombiner several new tricks, teaching it how to turnNate Begeman
sext_inreg into zext_inreg based on the signbit (fires a lot), srem into urem, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23688 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10A testcase sitting in my treeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23687 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Fix commentChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23686 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Add ISD::ADD to MaskedValueIsZeroChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23685 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10This function is now deadChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23684 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Enable Nate's excellent DAG combiner work by default. This allows theChris Lattner
removal of a bunch of ad-hoc and crufty code from SelectionDAG.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23682 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10These definitions have been moved to common code.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23681 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-10Pull DAG ISel generation nodes out of the PowerPC backend to where theyChris Lattner
can be used by other targets. For those targets that want to use it, have at. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23680 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09add a todo for something I noticedChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09(X & Y) & C == 0 if either X&C or Y&C are zeroChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23678 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Make MaskedValueIsZero a bit more aggressiveChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23677 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09This seems useful from the original patch that added the function. If there ↵Andrew Lenharth
is a reason it is not useful on a RISC type target, let me know and I will pull it out git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Fix funky xcode indentationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23674 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Hrm, you didn't see this.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23673 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Fix a source of non-determinism in the backend: the order of processingChris Lattner
IV strides dependend on the pointer order of the strides in memory. Non-determinism is bad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23672 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09When emiting a CopyFromReg and the source is already a vreg, do not botherChris Lattner
creating a new vreg and inserting a copy: just use the input vreg directly. This speeds up the compile (e.g. about 5% on mesa with a debug build of llc) by not adding a bunch of copies and vregs to be coallesced away. On mesa, for example, this reduces the number of intervals from 168601 to 129040 going into the coallescer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23671 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Disable formation of rlwinm instructions from SRA bases. This fixesChris Lattner
the 177.mesa failure from last night, and fixes the CodeGen/PowerPC/2005-10-08-ArithmeticRotate.ll regression test I added. If this code cannot be fixed, it should be removed for good, but I'll leave it to Nate to decide its fate. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23670 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-09Testcase that is miscompiled by the ppc backendChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23669 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-08Remove another unused file. Preparing for the great "enable i64 on ppc32"Nate Begeman
merge, and using subtarget info for ptr size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23668 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-08remove a comma to compile with pedantic gccChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23667 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-08Remove a file that is no longer usedNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23666 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-08Lo and behold, the last bits of SelectionDAG.cpp have been moved over.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23665 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07When preselecting, favor things that have low depth to select first. ThisChris Lattner
is faster and uses less stack space. This reduces our stack requirement enough to compile sixtrack, and though it's a hack, should be enough until we switch to iterative isel git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23664 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07remove debugging codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23663 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07implement CodeGen/PowerPC/div-2.ll:test2-4 by propagating zero bits throughChris Lattner
C-X's git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23662 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07These don't need to be sdivs.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23661 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07fix indentationChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23660 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07Turn sdivs into udivs when we can prove the sign bits are clear. ThisChris Lattner
implements CodeGen/PowerPC/div-2.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23659 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07New testcase, should turn into a ushrChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23658 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07Remove prolific source of VC++ truncation warnings.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07Remove useless variable.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23656 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07add a hack to work around broken VC++ scoping rules. Thx to JeffC for pointingChris Lattner
this out to me git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23655 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07Fix a CQ regression from my patch to split F32/F64 into seperate registerChris Lattner
classes on PPC. We were emitting fmr instructions to do fp extensions, which weren't getting coallesced. This fixes Regression/CodeGen/PowerPC/fpcopy.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23654 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07double to float casts should nto result in an fmrChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23653 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07Fix CodeGen/Generic/bool-to-double.llChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23652 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-07test broken in the IA64 backend.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23651 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-06Pull out Call, reducing stack frame size from 6032 bytes to 5184 bytes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23650 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-06Pull out setcc, this reduces stack frame size from 7520 to 6032 bytesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-06Pull two more methods out, reducing stack frame size from 8224 -> 7520 bytesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23648 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-06Add a recursive-iterative hybrid stage to attempt to reduce stack space, thisChris Lattner
helps but not enough. Start pulling cases out of PPC32DAGToDAGISel::Select. With GCC 4, this function required 8512 bytes of stack space for each invocation (GCC 3 required less than 700 bytes). Pulling this first function out gets us down to 8224. More to come :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-06silence a bogus GCC warningChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23646 91177308-0d34-0410-b5e6-96231b3b80d8
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