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Author SHA1 Message Date
Dan Gohman
c6c391dadd Create a new class, MemOperand, for describing memory references 
in the backend. Introduce a new SDNode type, MemOperandSDNode, for
holding a MemOperand in the SelectionDAG IR, and add a MemOperand
list to MachineInstr, and code to manage them. Remove the offset
field from SrcValueSDNode; uses of SrcValueSDNode that were using
it are all all using MemOperandSDNode now.

Also, begin updating some getLoad and getStore calls to use the
PseudoSourceValue objects.

Most of this was written by Florian Brander, some
reorganization and updating to TOT by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46585 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 00:25:39 +00:00
Evan Cheng
294e652491 Fixed a bug in MergeValueInAsValue() pointed out by David Greene. Replace val# with previous liverange's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46579 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 22:44:55 +00:00
Evan Cheng
965d1b4bba Treat the label for the first @llvm.dbg.stoppoint the same way as the dbg_func_start label. Make sure nothing else is inserted before them. 
Note this solution might be somewhat fragile since ISD::LABEL may be used for other
purposes. If that ends up to be an issue, we may need to introduce a different node
for debug labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46571 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 20:08:35 +00:00
Dale Johannesen
43b8f3b7d3 Adjust loop per review feedback. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46569 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 19:44:39 +00:00
Evan Cheng
6b2cf285bd A semi-gross fix for a debug info issue. When inserting the "function start" label (i.e. first label in the entry block) take care to insert it at the beginning of the block. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46568 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 19:35:32 +00:00
Devang Patel
59c8d8ae89 Supply appropriate arch info to darwin assembler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46567 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 19:19:31 +00:00
Dale Johannesen
7757fff6ae Accept getelementptr starting at GV with all 0 indices as a 
legitimate way of representing global variable GV in debug info.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46565 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 19:00:21 +00:00
Devang Patel
c60141ba43 Always put version numbers at the end because they are optional. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46563 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 18:30:11 +00:00
Evan Cheng
ff9b373e8f Even though InsertAtEndOfBasicBlock is an ugly hack it still deserves a proper name. Rename it to EmitInstrWithCustomInserter since it does not necessarily insert 
instruction at the end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46562 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 18:18:23 +00:00
Devang Patel
21b70b237d Enable exception handling if it is supported. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46560 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 17:43:03 +00:00
Dan Gohman
f38dc192dd Add a new PseudoSourceValue class, which will be used to help track 
memory reference information in the backend. Most of this was written by
Florian Brander, cleanup and updating to TOT by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46556 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 16:35:31 +00:00
Nick Lewycky
b4b0417220 Remove a couple more cases of "getNumUses() == 0". No need to walk the linked 
list just to see if whether the list is empty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46555 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 08:01:28 +00:00
Nick Lewycky
c7444498ee Use empty() instead of comparing size() with zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46554 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 07:54:16 +00:00
Nick Lewycky
d29ce1783c Don't DCE FreeInst's. We were using those! Patch from Owen Anderson. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46553 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 07:45:37 +00:00
Tanya Lattner
e504d76a15 Pointers change size depending upon the target. Remove them to make the test more stable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46548 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 05:15:15 +00:00
Evan Cheng
d2c860cef1 Skip over the label which marks the beginning of the function before inserting prologue code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46546 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 03:57:33 +00:00
Scott Michel
15dcd8e19d Back out mods to llvmAsmParser, incorrectly committed 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46545 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 03:10:00 +00:00
Scott Michel
7f9ba9bb3c More cleanups for CellSPU: 
- Expand tabs... (poss 80-col violations, will get them later...)
- Consolidate logic for SelectDFormAddr and SelectDForm2Addr into a single
  function, simplifying maintenance. Also reduced custom instruction
  generation for SPUvecinsert/INSERT_MASK.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46544 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 02:55:46 +00:00
Owen Anderson
772601a885 Make DSE much more aggressive by performing DCE earlier. Update a testcase to reflect this increased aggressiveness. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46542 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 01:24:47 +00:00
Owen Anderson
9a8ff8cd0f Fix an issue where, under very specific circumstances, memdep could end up dereferencing the end 
of one of its internal maps.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46541 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 01:24:05 +00:00
Chris Lattner
b10e0da065 Fix a bug where scalarrepl would discard offset if type would match. 
In practice this can only happen on code with already undefined behavior, 
but this is still a good thing to handle correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46539 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 00:39:15 +00:00
Dan Gohman
b625f2f896 Factor the addressing mode and the load/store VT out of LoadSDNode 
and StoreSDNode into their common base class LSBaseSDNode. Member
functions getLoadedVT and getStoredVT are replaced with the common
getMemoryVT to simplify code that will handle both loads and stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46538 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 00:15:11 +00:00
Evan Cheng
0d9e976ad2 Work in progress. This patch *fixes* x86-64 calls which are modelled as StructRet but really should be return in registers, e.g. _Complex long double, some 128-bit aggregates. This is a short term solution that is necessary only because llvm, for now, cannot model i128 nor call's with multiple results. 
Status: This only works for direct calls, and only the caller side is done. Disabled for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 19:34:22 +00:00
Evan Cheng
c748412c42 Update this test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46526 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 19:30:05 +00:00
Duncan Sands
648f880dc9 When expanding an operand, it's not the result value 
type that matters but the operand type.  This fixes
2008-01-08-IllegalCMP.ll which crashed with the new
legalize infrastructure because SETCC with result
type i8 and operand type i64 was being custom expanded
by the X86 backend.  With this fix, the gcc build gets
as far as the first libcall.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46525 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 19:29:08 +00:00
Chris Lattner
c69d3c9442 Don't let globalopt hack on volatile loads or stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46523 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 19:01:37 +00:00
Ted Kremenek
d25c9cd3ff Altered ctor for APSInt to accept an optional "isUnsigned" flag. Default 
behavior is unchanged.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46521 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 18:55:14 +00:00
Dan Gohman
3035959425 Use empty() instead of comparing size() with zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46514 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 13:02:09 +00:00
Dan Gohman
9f65c39f80 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46513 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:43:50 +00:00
Dan Gohman
0e9dfb0900 Update this file for 2.0 syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46512 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:35:50 +00:00
Dan Gohman
ba42d2b937 Add comments describing what the loop depth values mean. Also, make a 
minor simplification to the loop depth calculation code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46511 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:12:40 +00:00
Dan Gohman
97cf759b82 Fix 80-col violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46510 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:09:55 +00:00
Dan Gohman
b10abe1e8c Remove top-level const qualifiers from casts, avoiding associated 
compiler warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46509 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:08:20 +00:00
Dan Gohman
6ee9661390 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46508 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:07:11 +00:00
Dan Gohman
6326b0d0f8 Fix a typo in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46507 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 12:06:33 +00:00
Dan Gohman
1327f69d98 Add explicit keywords. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46506 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 11:36:12 +00:00
Chris Lattner
103e2d760f llvm.sqrt(-0.0) is defined. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46500 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 07:00:44 +00:00
Chris Lattner
2454a2e0c3 eliminate additions of 0.0 when they are obviously dead. This has to be careful to 
avoid turning -0.0 + 0.0 -> -0.0 which is incorrect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46499 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:52:45 +00:00
Owen Anderson
cca1867ab7 Add a testcase for eliminating memcpy's at the end of functions. Forgot to commit this with my last commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46497 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:40:32 +00:00
Chris Lattner
7cf9abff23 Add target triples to these so they don't fail on linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46496 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:26:07 +00:00
Duncan Sands
d102593b42 Use getPreferredAlignmentLog or getPreferredAlignment 
to get the alignment of global variables, rather than
using hand-made versions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46495 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:23:44 +00:00
Owen Anderson
a34d8a0d83 Add support for eliminating memcpy's at the end of functions. Also fix some errors I noticed in 
the handling of eliminating stores to byval arguments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46494 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:18:36 +00:00
Duncan Sands
b7cbab8b28 This would be better done as an executable test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46493 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 06:04:54 +00:00
Duncan Sands
3cecb51cb3 After recent changes we fail to optimize this test 
sufficiently to have it pass.  I'm removing it from
the testsuite and adding it to PR452 instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46492 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 05:57:23 +00:00
Owen Anderson
8822eabe36 RegAllocBigBlock doesn't need LiveVariables either. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46488 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:32:13 +00:00
Scott Michel
6be48d49cf Fix to bug 1951: tblgen gratuitously renames variables when no temporary was 
generated. This feature would only show up in fairly complex patterns, such
as this one in CellSPU:

  def : Pat<(add (SPUhi tconstpool:$in, 0), (SPUlo tconstpool:$in, 0)),
	    (IOHLlo (ILHUhi tconstpool:$in), tconstpool:$in)>;

which generated the following emit code:

SDNode *Emit_0(const SDOperand &N, unsigned Opc0, unsigned Opc1, MVT::ValueType VT0, MVT::ValueType VT1) DISABLE_INLINE {
  SDOperand N0 = N.getOperand(0);
  SDOperand N00 = N0.getOperand(0);
  SDOperand N01 = N0.getOperand(1);
  SDOperand N1 = N.getOperand(1);
  SDOperand N10 = N1.getOperand(0);
  SDOperand N11 = N1.getOperand(1);
  SDOperand Tmp3(CurDAG->getTargetNode(Opc0, VT0, N00), 0);
  return CurDAG->SelectNodeTo(N.Val, Opc1, VT1, Tmp3, Tmp2); /* Tmp2 s/b N00 */
}

Tested against the test suites without incident.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46487 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:29:31 +00:00
Nate Begeman
55030dc460 Properly expand extract-element for non-power-of-2 codegen 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46486 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:24:00 +00:00
Dale Johannesen
ba2a0b960e Handle 'X' constraint in asm's better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:21:21 +00:00
Devang Patel
c840da14c6 Filter loops that subtract induction variables. 
These loops are not yet handled.

Fix PR 1912.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46484 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:20:41 +00:00
Scott Michel
053c1da8d9 Overhaul Cell SPU's addressing mode internals so that there are now 
only two addressing mode nodes, SPUaform and SPUindirect (vice the
three previous ones, SPUaform, SPUdform and SPUxform). This improves
code somewhat because we now avoid using reg+reg addressing when
it can be avoided. It also simplifies the address selection logic,
which was the main point for doing this.

Also, for various global variables that would be loaded using SPU's
A-form addressing, prefer D-form offs[reg] addressing, keeping the
base in a register if the variable is used more than once.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46483 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:16:57 +00:00