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path: root/lib/CodeGen/SelectionDAG
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2005-10-02silence a bogus warningChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23595 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-02Add assertions to the trivial scheduler to check that the value types matchChris Lattner
up between defs and uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23590 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-02Codegen CopyFromReg using the regclass that matches the valuetype of theChris Lattner
destination vreg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23586 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-01Add some very paranoid checking for operand/result reg class matchupChris Lattner
For instructions that define multiple results, use the right regclass to define the result, not always the rc of result #0 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23580 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
2005-10-01add a methodChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23575 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-01typoJim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23574 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-011. Simplify the gathering of node groups.Jim Laskey
2. Printing node groups when displaying nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23573 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-301. Made things node-centric (from operand).Jim Laskey
2. Added node groups to handle flagged nodes. 3. Started weaning simple scheduling off existing emitter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23566 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29Fix two bugs in my patch earlier today that broke int->fp conversion on X86.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23522 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-29Silence VC++ redeclaration warnings.Jeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23516 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
2005-09-27initialize new flagChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23480 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27Remove some redundancies.Jim Laskey
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23469 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-26Addition of a simple two pass scheduler. This version is currently hacked upJim Laskey
for testing and will require target machine info to do a proper scheduling. The simple scheduler can be turned on using -sched=simple (defaults to -sched=none) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23455 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-23Turn (X^C1) == C2 into X == C1^C2 iff X&~C1 = 0 (and move a function)Chris Lattner
This happens all the time on PPC for bool values, e.g. eliminating a xori in inverted-bool-compares.ll. This should be added to the dag combiner as well. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23403 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-19Stub out the rest of the DAG Combiner. Just need to fill in theNate Begeman
select_cc bits and then wrap it in a convenience function for use with regular select. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23389 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-16More DAG combining. Still need the branch instructions, and select_ccNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23371 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
2005-09-10Allow targets to say they don't support truncstore i1 (which includes a maskChris Lattner
when storing to an 8-bit memory location), as most don't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23303 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09Add a missing #include, patch courtesy of Baptiste Lepilleur.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23302 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09Fix a problem duraid encountered on itanium where this folding:Chris Lattner
select (x < y), 1, 0 -> (x < y) incorrectly: the setcc returns i1 but the select returned i32. Add the zero extend as needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23301 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09Fix a crash viewing dags that have target nodes in themChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23300 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-09Last round of 2-node folds from SD.cpp. Will move on to 3 node ops suchNate Begeman
as setcc and select next. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23295 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-08Move yet more folds over to the dag combiner from sd.cppNate Begeman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23278 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Another round of dag combiner changes. This fixes some missing XOR foldsNate Begeman
as well as fixing how we replace old values with new values. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23260 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Implement a common missing fold, (add (add x, c1), c2) -> (add x, c1+c2).Nate Begeman
This restores all of stanford to being identical with and without the dag combiner with the add folding turned off in sd.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23258 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-07Fix a bug nate ran into with replacealluseswith. In the recursive cse case,Chris Lattner
we were losing a node, causing an assertion to fail. Now we eagerly delete discovered CSE's, and provide an optional vector to keep track of these discovered equivalences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23255 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
2005-09-06Next round of DAGCombiner changes. This version now passes all the testsNate Begeman
I have run so far when run before Legalize. It still needs to pick up the SetCC folds, and nodes that use SetCC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23243 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-03Fix a checking failure in gsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23235 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Next round of DAG Combiner changes. Just need to support multiple returnNate Begeman
values, and then we should be able to hook it up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23231 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Clean up some code from the last checkinChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23229 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Fix a bug in legalize where it would emit two calls to libcalls that returnChris Lattner
i64 values on targets that need that expanded to 32-bit registers. This fixes PowerPC/2005-09-02-LegalizeDuplicatesCalls.ll and speeds up 189.lucas from taking 122.72s to 81.96s on my desktop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23228 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Make sure to auto-cse nullary opsChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23224 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Fix some buggy logic where we would try to remove nodes with two operandsChris Lattner
from the binary ops map, even if they had multiple results. This latent bug caused a few failures with the dag isel last night. To prevent stuff like this from happening in the future, add some really strict checking to make sure that the CSE maps always match up with reality! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23221 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
2005-09-02Make sure to legalize assert[zs]ext's operand correctlyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23208 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
2005-09-02legalize ANY_EXTEND appropriatelyChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23204 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-02Add support for ANY_EXTEND and add a few minor folds for itChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23203 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Fix some code in the current node combining code, spotted when it was movedNate Begeman
over to DAGCombiner.cpp 1. Don't assume that SetCC returns i1 when folding (xor (setcc) constant) 2. Don't duplicate code in folding AND with AssertZext that is handled by MaskedValueIsZero git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23196 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01Implement first round of feedback from chris (there's still a couple thingsNate Begeman
left to do). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23195 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
2005-09-01Add the rest of the currently implemented visit routines to the switchNate Begeman
statement in visit(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23185 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-01First pass at the DAG Combiner. It isn't used anywhere yet, but it shouldNate Begeman
be mostly functional. It currently has all folds from SelectionDAG.cpp that do not involve a condition code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23184 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Allow targets to custom expand shifts that are too large for their registersChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23173 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-31Fix VC++ precedence warningsJeff Cohen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23169 91177308-0d34-0410-b5e6-96231b3b80d8
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