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2005-08-18revert this change, which causes breakage, temporarilyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22880 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18When emitting implicit use/def lists, only emit each unique list once. ThoughChris Lattner
LLVM is able to merge identical static const globals, GCC isn't, and this caused some bloat in the generated data. This has a marginal effect on PPC, shrinking the implicit sets from 10->4, but shrinks X86 from 179 to 23, a much bigger reduction. This should speed up the register allocator as well by reducing the dcache footprint for this static data. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22879 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18add a new -view-sched-dags option to view dags as they are sent to the ↵Chris Lattner
scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22878 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Move this to the emitterChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22877 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Implement the first chunk of a code emitter. This is sophisticated enough toChris Lattner
codegen: _empty: .LBB_empty_0: ; blr but can't do anything more (yet). :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22876 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Unmangled names.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22875 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add ScheduleDAG.cpp to the projectChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22874 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Fill in the numOperands field of the TargetInstrDescriptor struct from theChris Lattner
.td file. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22873 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-181. Fix comment.Jim Laskey
2. Get an exact count of 'li ' instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22872 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add regression test to make sure that constants are generated optimally.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22871 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18More optimal solution for loading constants.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22870 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18After selecting the instructions for a basic block, emit the instructionsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22869 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18new file, obviously just a stubChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18add a methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22867 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18remove some unused stuffChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22866 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Fix int foo() { return 65535; } by using the top 16 bits of the constantNate Begeman
as the argument to LIS rather than the result of HA16(constant). The DAG->DAG ISel was already doing the right thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22865 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Improve ISD::Constant codegen.Nate Begeman
Now for int foo() { return -1; } we generate: _foo: li r3, -1 blr instead of _foo: lis r2, -1 ori r3, r2, 65535 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22864 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Enable critical edge splitting by defaultChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22863 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18replace switch stmt with an assert, generate li 0 instead of lis 0 for 0,Chris Lattner
to make the code follow people's expectations better. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22861 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Handle loading of 0x????0000 constants with a single instruction.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22858 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add support for ISD::AND, and its various optimized forms.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22857 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add support for target DAG nodes that take 4 operands, such as PowerPC'sNate Begeman
rlwinm. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22856 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Maintain consistency in negating thingsNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22855 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Implement XOR, remove a broken sign_extend_inreg caseNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22854 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Fix printing of VTSDNodesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22853 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add a testcase for load short -> uint, which is currently emitted as aNate Begeman
zextload + sign_extend_inreg rather than a sextload. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22852 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add a bunch more simple nodes.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22851 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Add a couple more nodes that are easy to handleNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22850 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Be fruitful and multiply!Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22849 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-18Better version of isIntImmediate.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22848 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17messed upJim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22847 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17include/llvm/Support/MathExtras.hJim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22846 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Teach the DAG->DAG ISel about FNEG, and how it can be used to invertNate Begeman
several of the PowerPC opcodes that come in both negated and non-negated forms. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22845 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Add two new methods isTargetOpcode() which returns true if the node typeNate Begeman
is greater than the range of building selection dag node types, and getTargetOpcode(), which returns the node opcode less the value of isd::builtin_op_end, which specifies the end of the builtin types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22844 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Fix Transforms/LoopStrengthReduce/2005-08-17-OutOfLoopVariant.ll, a crashChris Lattner
on 177.mesa git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22843 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17new testcase distilled from mesaChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22842 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Move the code dependency for MathExtras.h from SelectionDAGNodes.h.Jim Laskey
Added some class dividers in SelectionDAG.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22841 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Move code dependency for MathExtras.h out of Constants.h.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22840 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Promote dependency for MathExtras.h out of Constants.h.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22839 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Culling out use of unions for converting FP to bits and vice versa.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22838 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17add a beta option for turning on dag->dag iselChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22837 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17initial hack at a dag->dag instruction selector. This is obviously woefullyChris Lattner
incomplete, but it is a start. It handles basic argument/retval stuff, immediates, add and sub. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22836 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17add prototype, remove dead protoChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22835 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Fix a bug in RemoveDeadNodes where it would crash when its "optional"Chris Lattner
argument is not specified. Implement ReplaceAllUsesWith. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22834 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17add ReplaceAllUsesWith, and a helper to implemented itChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22833 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Make removeUser more efficient, add a matching addUser.Chris Lattner
Fix the setOperands methods I added to update use/def information correctly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22832 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Switched to using BitsToDouble for int_to_float to avoid aliasing problem.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22831 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Added support for converting raw bits to FP, and FP to raw bits. The intentJim Laskey
is to avoid the distraction of the union declarations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22830 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Fix some bugs in the alpha backend, some of which I introduced yesterday,Chris Lattner
and some that were preexisting. All alpha regtests pass now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22829 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Change hex float constants for the sake of VC++.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22828 91177308-0d34-0410-b5e6-96231b3b80d8
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