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path: root/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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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
2005-10-05make sure that -view-isel-dags is the input to the isel, not the input toChris Lattner
the second phase of dag combining git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23631 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-01Fix VC++ warnings.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23579 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-28Add FP versions of the binary operators, keeping the int and fp worlds seperate.Chris Lattner
Though I have done extensive testing, it is possible that this will break things in configs I can't test. Please let me know if this causes a problem and I'll fix it ASAP. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23504 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27If the target prefers it, use _setjmp/_longjmp should be used instead of ↵Chris Lattner
setjmp/longjmp for llvm.setjmp/llvm.longjmp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23481 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-13If a function has liveins, and if the target requested that they be ploppedChris Lattner
into particular vregs, emit copies into the entry MBB. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23331 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Add an option to the DAG Combiner to enable it for beta runs, and turn onNate Begeman
that option for PowerPC's beta. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23253 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Don't create zero sized stack objects even for array allocas with a zeroChris Lattner
number of elements. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23219 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Fix the release build, noticed by Eric van Riet PaapChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23215 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02For values that are live across basic blocks and need promotion, use ANY_EXTENDChris Lattner
instead of ZERO_EXTEND to eliminate extraneous extensions. This eliminates dead zero extensions on formal arguments and other cases on PPC, implementing the newly tightened up test/Regression/CodeGen/PowerPC/small-arguments.ll test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23205 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01It is NDEBUG not _NDEBUGChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23186 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-27Disable this code, which broke many tests last nightChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23114 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-26Don't copy regs that are only used in the entry block into a vreg. ThisChris Lattner
changes the code generated for: short %test(short %A) { %B = xor short %A, -32768 ret short %B } to: _test: xori r2, r3, 32768 xoris r2, r2, 65535 extsh r3, r2 blr instead of: _test: rlwinm r2, r3, 0, 16, 31 xori r2, r3, 32768 xoris r2, r2, 65535 extsh r3, r2 blr git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23109 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-26Call the InsertAtEndOfBasicBlock hook if the usesCustomDAGSchedInserterChris Lattner
flag is set on an instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23098 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-24Make -view-isel-dags show the dag before instruction selecting, in caseChris Lattner
the target isel crashes due to unimplemented features like calls :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22997 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-22Fix a problem where constant expr shifts would not have their shift amountChris Lattner
promoted to the right type. This fixes: IA64/2005-08-22-LegalizerCrash.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22969 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
2005-08-17Add a new beta option for critical edge splitting, to avoid a problem thatChris Lattner
Nate noticed in yacr2 (and I know occurs in other places as well). This is still rough, as the critical edge blocks are not intelligently placed but is added to get some idea to see if this improves performance. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-17Fix a regression on X86, where FP values can be promoted too.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22822 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-16Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef)Chris Lattner
used to tack a register number onto the node. Instead of doing this, make a new node, RegisterSDNode, which is a leaf containing a register number. These three operations just become normal DAG nodes now, instead of requiring special handling. Note that with this change, it is no longer correct to make illegal CopyFromReg/CopyToReg nodes. The legalizer will not touch them, and this is bad, so don't do it. :) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22806 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-09Eliminate the SetCCSDNode in favor of a CondCodeSDNode class. This pulls theChris Lattner
CC out of the SetCC operation, making SETCC a standard ternary operation and CC's a standard DAG leaf. This will make it possible for other node to use CC's as operands in the future... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22728 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27Eliminate all remaining tabs and trailing spaces.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22523 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19Remove unnecessary FP_EXTEND. This causes worse codegen for SSE.Nate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22469 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-05Make several cleanups to Andrews varargs change:Chris Lattner
1. Pass Value*'s into lowering methods so that the proper pointers can be added to load/stores from the valist 2. Intrinsics that return void should only return a token chain, not a token chain/retval pair. 3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22338 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29restore old srcValueNode behavior and try to to work around itAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22315 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-29tracking the instructions causing loads and stores provides more information ↵Andrew Lenharth
than just the pointer being loaded or stored git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22311 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-22If we support structs as va_list, we must pass pointers to them to va_copyAndrew Lenharth
See last commit for LangRef, this implements it on all targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22273 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18core changes for varargsAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22254 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14Fix construction of ioport intrinsics, fixing X86/io.llx and io-port.llxChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22026 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14Eliminate special purpose hacks for dynamic_stack_alloc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22015 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14LowerOperation takes a dagChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22004 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13Align doubles on 8-byte boundaries if possible.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21993 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13Add an isTailCall flag to LowerCallToChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21958 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13Emit function entry code after lowering hte arguments.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21931 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13Allow targets to emit code into the entry block of each functionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21930 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12Pass calling convention to use into lower call toChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21900 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-11wrap long lineChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21870 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09The semantics of cast X to bool are a comparison against zero, not a truncation!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21833 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09Add support for matching the READPORT, WRITEPORT, READIO, WRITEIO intrinsicsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21825 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09Don't use the load/store instruction as the source pointer, use the pointerChris Lattner
being stored/loaded through! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21806 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-09wrap long linesChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21804 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-05When hitting an unsupported intrinsic, actually print itChris Lattner
Lower debug info to noops. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21698 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-03Implement count leading zeros (ctlz), count trailing zeros (cttz), and countAndrew Lenharth
population (ctpop). Generic lowering is implemented, however only promotion is implemented for SelectionDAG at the moment. More coming soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-30Codegen and legalize sin/cos/llvm.sqrt as FSIN/FCOS/FSQRT calls. This patchChris Lattner
was contributed by Morten Ofstad, with some minor tweaks and bug fixes added by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21636 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-27Implement Value* tracking for loads and stores in the selection DAG. This ↵Andrew Lenharth
enables one to use alias analysis in the backends. (TRUNK)Stores and (EXT|ZEXT|SEXT)Loads have an extra SDOperand which is a SrcValueSDNode which contains the Value*. Note that if the operation is introduced by the backend, it will still have the operand, but the value* will be null. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21599 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-22Convert tabs to spacesMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21439 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21Remove trailing whitespaceMisha Brukman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21420 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-12Fold shift by size larger than type size to undefNate Begeman
Make llvm undef values generate ISD::UNDEF nodes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21261 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-09Emit BRCONDTWOWAY when possible.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21167 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-02transform fabs/fabsf calls into FABS nodes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21014 91177308-0d34-0410-b5e6-96231b3b80d8
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