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path: root/utils/TableGen/DAGISelEmitter.cpp
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2006-01-06Bug fix wrt chain operand.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04Replace fix with one less disruptive to the original code.Jeff Cohen
Also note that GCC 4.1 also correctly flags the syntax error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25076 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04Tblgen was generating syntactically illegal C++ code like:Jeff Cohen
SDOperand Tmp0,Tmp1,Tmp2,Tmp3,; GCC has a bug (24907) in which is fails to catch this, but VC++ correctly notes its illegality, so tblgen must be taught to only generate legal C++. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25075 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04Remove obsolete comment, make things look a bit nicerChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25070 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04reduce stack usage of the recursive SelectCode function by out-lining eachChris Lattner
case of the switch statement into its own method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25069 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-03Remove my previous ugly hack that tries to reduce the stack space usageChris Lattner
of SelectCode to make way for a better solution. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25068 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-30HP-UX DVDs are crunchy and good to eatDuraid Madina
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25052 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-30Add support for generating v4i32 altivec codeNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25046 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-26Added field noResults to Instruction.Evan Cheng
Currently tblgen cannot tell which operands in the operand list are results so it assumes the first one is a result. This is bad. Ideally we would fix this by separating results from inputs, e.g. (res R32:$dst), (ops R32:$src1, R32:$src2). But that's a more distruptive change. Adding 'let noResults = 1' is the workaround to tell tblgen that the instruction does not produces a result. It works for now since tblgen does not support instructions which produce multiple results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25017 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-24support targetexternalsymAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25005 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-23* Support for hasInFlag and hasOutFlag (on instructions). Remove nameless FLAGEvan Cheng
support which is fragile. * Fixed a number of bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24996 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22silence some bogus gcc warningsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24962 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22Attempt to fix a crash on WIN32.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24936 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22* Added support for FLAG - a special nameless flag register. Can be used asEvan Cheng
either an operand or a result. * Fixed some more flag / chain bugs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24933 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21Allows instructions which no explicit operands. e.g. X86 RET which has butEvan Cheng
an implicit flag operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24916 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21Eliminate some GCC warnings from the generated codeChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24897 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20Fix the semantic of Requires<[cond]> to mean if (!cond) goto PXXFail;Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24883 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20This ugly patch works around a GCC bug where it is compiling SelectCode toChris Lattner
use too much stack space, overflowing the stack for large functions. Instead of emitting new SDOperands in each match block, we emit some common ones at the top of SelectCode then reuse them when possible. This reduces the stack size of SelectCode from 28K to 21K. Note that GCC compiles it to 512 bytes :-/ I've filed GCC PR 25505 to track this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24882 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20Now support instructions with implicit write to non-flag registers.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24878 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20Lefted out a fix in the previous check in.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24873 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-19Fix another bug related to chain / flag.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-19Fixes for a number of bugs: save flag results in CodeGenMap, folded chainsEvan Cheng
may not all have ResNo == 0. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24858 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18Handle basic block nodesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24833 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18More fixes for Selection of copyto/fromreg with a flagChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24829 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18Select copytoreg and copyfromreg nodes that have flag operands correctly.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24827 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-17Support for read / write from explicit registers with FlagVT type.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24753 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-14Added support to specify predicates.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24715 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-14Skip over srcvalue nodes when generating ISEL code.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24704 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-12Bug fix: CodeGenMap[N] = ... -> CodeGenMap[N.getValue(0)] = ...Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24680 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-12At top of generated isel SelectCode() is this:Evan Cheng
if (!N.Val->hasOneUse()) { std::map<SDOperand, SDOperand>::iterator CGMI = CodeGenMap.find(N); if (CGMI != CodeGenMap.end()) return CGMI->second; } Suppose a DAG like this: X ^ ^ / \ USE1 USE2 Suppose USE1 is being selected first and during which X is selected and returned a new node. After this, USE1 is no longer an use of X. During USE2 selection, X will be selected again since it has only one use! The fix is to always query CodeGenMap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-12Bug fix: finding the correct incoming chain for pattern with nested src ↵Evan Cheng
operand. And a minor change to make output code slightly more readible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24669 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-10Add support for TargetConstantPool nodes to the dag isel emitter, and useNate Begeman
them in the PPC backend, to simplify some logic out of Select and SelectAddr. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-10Stop emitting a redudant type check for complex pattern node.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24655 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-10For instructions which produce no result, e.g. store, chain's Resno == 0.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24652 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-09Add a new SDTCisPtrTy constraint, which indicates that an operand must haveChris Lattner
the same type as the pointer type for a target. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-09* Do not allow nodes which produce chain results (e.g. loads) to be folded ifEvan Cheng
it has more than one real use (non-chain uses). * Record folded chain producing node in CodeGenMap. * Do not fold a chain producing node if it has already been selected as an operand of a chain use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-09Prevent folding of instructions which produce chains that have more than 1 ↵Evan Cheng
real use git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24643 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-09* Make sure complex pattern operands are selected first since their selectEvan Cheng
functions can return false and causing the instruction pattern match to fail. * Code clean up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24642 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-08* Added an explicit type field to ComplexPattern.Evan Cheng
* Renamed MatchingNodes to RootNodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24636 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-08Added support for ComplexPattern. These are patterns that require C++ patternEvan Cheng
matching code that is not currently auto-generated by tblgen, e.g. X86 addressing mode. Selection routines for complex patterns can return multiple operands, e.g. X86 addressing mode returns 4. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24634 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-05* Infer instruction property hasCtrlDep from pattern if it has one.Evan Cheng
* Fixed a bug related to hasCtrlDep property use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24610 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-05Implement PR673: for explicit register references, use type informationChris Lattner
if available git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24597 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-05Generate code to silence bogus GCC warnings.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24593 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-04* Commit the fix (by Chris) for a tblgen type inferencing bug.Evan Cheng
* Enhanced tblgen to handle instructions which have chain operand and writes a chain result. * Enhanced tblgen to handle instructions which produces no results. Part of the change is a temporary hack which relies on instruction property (e.g. isReturn, isBranch). The proper fix would be to change the .td syntax to separate results dag from ops dag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24587 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-01Support multiple ValueTypes per RegisterClass, needed for upcoming vectorNate Begeman
work. This change has no effect on generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24563 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-01Teach tblgen to accept register source operands in patterns, e.g.Evan Cheng
def SHL8rCL : I<0xD2, MRM4r, (ops R8 :$dst, R8 :$src), "shl{b} {%cl, $dst|$dst, %CL}", [(set R8:$dst, (shl R8:$src, CL))]>, Imp<[CL],[]>; This generates a CopyToReg operand and added its 2nd result to the shl as a flag operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24557 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-01Stop checking the ValueType of the CodeGenInstruction. Instead, use theNate Begeman
ValueType from the RegisterClass or Operands. This step is necessary to allow RegisterClasses to have multiple ValueTypes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24555 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-30Make the code generated by tblgen return the result of SelectNodeTo, toChris Lattner
permit future changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24553 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-29Better error message when unrecognized opcode is seen.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24519 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-17Validate that the input to 'Pat' patterns is sane.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24393 91177308-0d34-0410-b5e6-96231b3b80d8
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