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Author SHA1 Message Date
Owen Anderson
aaba6f96da Allow GVN to hack on memcpy's, making them open to further optimization. 
llvm-svn: 46693
 2008-02-04 02:59:58 +00:00
Nick Lewycky
81cc718a25 Tag this test with the PR reference. 
llvm-svn: 46688
 2008-02-03 16:35:19 +00:00
Nick Lewycky
febd3642ce There are some cases where icmp(add) can be folded into a new icmp. Handle them. 
llvm-svn: 46687
 2008-02-03 16:33:09 +00:00
Nick Lewycky
29cd604126 Hack on vectors too. 
llvm-svn: 46684
 2008-02-03 08:19:11 +00:00
Nick Lewycky
ce4c4698d7 Fold away one multiply in instcombine. This would normally be caught in 
reassociate anyways, but they could be generated during instcombine's run.

llvm-svn: 46683
 2008-02-03 07:42:09 +00:00
Chris Lattner
391e0937e7 Fix typo 
llvm-svn: 46682
 2008-02-03 07:30:27 +00:00
Nate Begeman
ead8dfeef2 SSE 4.1 Intrinsics and detection 
llvm-svn: 46681
 2008-02-03 07:18:54 +00:00
Chris Lattner
57478e6318 handle the case where a node can become ready to process 
multiple times due to a RAUW.

llvm-svn: 46680
 2008-02-03 07:13:32 +00:00
Chris Lattner
6c9f8f2d91 Use the new infrastructure for listening to node updates to 
keep the LegalizeTypes node flags up to date when doing a RAUW.
This fixes a nasty bug that Duncan ran into and makes the 
previous (nonbuggy case) more efficent.

llvm-svn: 46679
 2008-02-03 07:08:51 +00:00
Chris Lattner
ce1bde2760 the world doesn't need my debugging code. 
llvm-svn: 46678
 2008-02-03 07:01:05 +00:00
Chris Lattner
6ea106139d Change the 'global modification' APIs in SelectionDAG to take a new 
DAGUpdateListener object pointer instead of just returning a vector 
of deleted nodes.  This makes the interfaces more efficient (no more
allocating a vector [at least a malloc], filling it in, then walking
it) and more clean.  This also allows the client to be notified of
nodes that are *changed* but not deleted.

llvm-svn: 46677
 2008-02-03 06:49:24 +00:00
Chris Lattner
e926ece00b explicitly include Compiler.h instead of getting it from tblgen in the middle of a class. 
llvm-svn: 46676
 2008-02-03 05:43:57 +00:00
Chris Lattner
096fa73683 Generalize the SDOperand->SDOperand form of 
SelectionDAG::ReplaceAllUsesWith to handle replacement of
an SDOperand with *any* sdoperand, not just one for a node with
a single result.  Note that this has a horrible FIXME'd hack in it
to work around PR1975.  This should be removed when PR1975 is fixed.

llvm-svn: 46674
 2008-02-03 03:35:22 +00:00
Chris Lattner
df36b95e00 don't do ReplaceUses on a result that doesn't exist. 
llvm-svn: 46673
 2008-02-03 03:20:59 +00:00
Chris Lattner
b936d07617 add a -view-legalize-types-dags option, for viewing the dags going into legalize types. 
llvm-svn: 46672
 2008-02-03 02:05:04 +00:00
Evan Cheng
f61d1115af Get rid of the annoying blank lines before labels. 
llvm-svn: 46667
 2008-02-02 08:39:46 +00:00
Nick Lewycky
78e2e2cd07 Don't use uninitialized values. Fixes vec_align.ll on X86 Linux. 
llvm-svn: 46666
 2008-02-02 08:29:58 +00:00
Evan Cheng
dd8d07749a Unbreak ppc debug support. 
llvm-svn: 46665
 2008-02-02 05:06:29 +00:00
Evan Cheng
c57ec111f2 SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc. 
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.

llvm-svn: 46659
 2008-02-02 04:07:54 +00:00
Devang Patel
cad20dbdb0 Add comment explaining what is lower level analysis pass. 
llvm-svn: 46658
 2008-02-02 01:43:30 +00:00
Devang Patel
7410c70845 Do not strip symbols when EH is ON. 
llvm-svn: 46657
 2008-02-02 01:32:38 +00:00
Gordon Henriksen
b75d9e974d Fixing a bug creating floating point constants of type other 
than double through the C bindings. Thanks to Tomas Lindquist
Olsen for reporting it.

llvm-svn: 46656
 2008-02-02 01:07:50 +00:00
Evan Cheng
9ff6b89bd9 Frame index can be negative. 
llvm-svn: 46655
 2008-02-02 00:17:00 +00:00
Lauro Ramos Venancio
563e0a3ea3 CBackend: Implement unaligned load/store. 
llvm-svn: 46646
 2008-02-01 21:25:59 +00:00
Duncan Sands
454a8eaee9 Don't drop function/call return attributes like 'nounwind'. 
llvm-svn: 46645
 2008-02-01 20:37:16 +00:00
Evan Cheng
567500c8be Update llvm.dbg.func.start. 
llvm-svn: 46636
 2008-02-01 09:12:11 +00:00
Evan Cheng
d6222fc11d Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before. 
llvm-svn: 46635
 2008-02-01 09:10:45 +00:00
Evan Cheng
abe3a9ad27 Rename RecordLabel to RecordSourceLine because that's what it is doing. 
llvm-svn: 46628
 2008-02-01 02:05:57 +00:00
Anton Korobeynikov
1cc154d068 Add convenient std::string helpers to StringMap. Patch by Mikhail Glushenkov! 
llvm-svn: 46625
 2008-01-31 23:02:33 +00:00
Evan Cheng
2a533e6894 Revert 46556 and 46585. Dan please fix the PseudoSourceValue problem and re-commit. 
llvm-svn: 46623
 2008-01-31 21:00:00 +00:00
Dale Johannesen
c19b8c41c6 Chris' change to print an approximation to long doubles 
exposed a bug in APFloat's long double->double conversion of
NaNs.  Broke several things in the ieee part of gcc testsuite.

llvm-svn: 46617
 2008-01-31 18:34:01 +00:00
Anton Korobeynikov
91b7d99e8a Reapply the patch with fix. 
llvm-svn: 46615
 2008-01-31 17:43:25 +00:00
Chris Lattner
87c2925656 revert anton's recent stringmap patch, which breaks clang. 
llvm-svn: 46614
 2008-01-31 17:24:51 +00:00
Anton Korobeynikov
55998b56a0 Make StringMap to be more STL'ish. Patch by Mikhail Glushenkov! 
llvm-svn: 46612
 2008-01-31 12:30:40 +00:00
Anton Korobeynikov
45e5afd820 Whitespace cleanup 
llvm-svn: 46611
 2008-01-31 12:10:41 +00:00
Evan Cheng
569eb20aac Add a comment for a nasty short term hack. 
llvm-svn: 46610
 2008-01-31 10:05:13 +00:00
Evan Cheng
705212577d Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution. 
llvm-svn: 46609
 2008-01-31 09:59:15 +00:00
Christopher Lamb
1a102eecb0 Allow ComplexExpressions in InstrInfo.td files to be slightly more... complex! ComplexExpressions can now have attributes which affect how TableGen interprets 
the pattern when generating matchin code. 

The first (and currently, only) attribute causes the immediate parent node of the ComplexPattern operand to be passed into the matching code rather than the node at the root of the entire DAG containing the pattern.

llvm-svn: 46606
 2008-01-31 07:27:46 +00:00
Christopher Lamb
c924dea069 Add more thorough error checking for NULL register classes. 
llvm-svn: 46605
 2008-01-31 07:09:08 +00:00
Evan Cheng
d1bed85965 Add x86 specific getFrameIndexOffset(). This fixes local variable debugging info. 
llvm-svn: 46598
 2008-01-31 04:06:00 +00:00
Evan Cheng
a63f6736f3 MRegisterInfo::getLocation() is a really bad idea. Its function is to calculate the offset from frame pointer to a stack slot and then storing the delta in a MachineLocation object. The name is bad (it implies a getter), and MRegisterInfo doesn't need to know about MachineLocation. 
Replace getLocation() with getFrameIndexOffset() which returns the delta from frame pointer to stack slot. Dwarf writer can then use the information for whatever it wants.

llvm-svn: 46597
 2008-01-31 03:37:28 +00:00
Evan Cheng
f9d2cf4cae Makes the same change in ppc backend: avoid inserting prologue before debug labels. 
llvm-svn: 46596
 2008-01-31 03:33:38 +00:00
Dan Gohman
562ed58408 Avoid unnecessarily casting away const, fixing a FIXME. 
llvm-svn: 46591
 2008-01-31 01:05:10 +00:00
Dan Gohman
018ea14d87 Avoid unnecessarily casting away const. 
llvm-svn: 46590
 2008-01-31 01:01:48 +00:00
Dan Gohman
703a070e12 Fix a typo in a comment. 
llvm-svn: 46588
 2008-01-31 00:44:33 +00:00
Dan Gohman
3993809a0c Rename ISD::FLT_ROUNDS to ISD::FLT_ROUNDS_ to avoid conflicting 
with the real FLT_ROUNDS (defined in <float.h>).

llvm-svn: 46587
 2008-01-31 00:41:03 +00:00
Evan Cheng
3d7eda3f35 Also avoid adding callee save code before debug labels. 
llvm-svn: 46586
 2008-01-31 00:27:49 +00:00
Dan Gohman
4326d513ab 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.

llvm-svn: 46585
 2008-01-31 00:25:39 +00:00
Evan Cheng
66a9ea3aa8 Fixed a bug in MergeValueInAsValue() pointed out by David Greene. Replace val# with previous liverange's. 
llvm-svn: 46579
 2008-01-30 22:44:55 +00:00
Evan Cheng
b2b94f7a81 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.

llvm-svn: 46571
 2008-01-30 20:08:35 +00:00