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958 Commits

Author SHA1 Message Date
Dan Gohman
ec74444d3e Remove the code for special-casing byval for fast-isel. SelectionDAG 
handles argument lowering anyway, so there's no need for special
casing here.

llvm-svn: 102828
 2010-05-01 02:44:23 +00:00
Dan Gohman
096619eb52 Fix whitespace. 
llvm-svn: 102817
 2010-05-01 00:33:28 +00:00
Dan Gohman
5d059718c9 Reorgnaize more switch code lowering to clean up some tricky 
code, and to eliminate the need for the SelectionDAGBuilder
state to be live during CodeGenAndEmitDAG calls.

Call SDB->clear() before CodeGenAndEmitDAG calls instead of
before it, and move the CurDAG->clear() out of SelectionDAGBuilder,
which doesn't own the DAG, and into CodeGenAndEmitDAG.

llvm-svn: 102814
 2010-05-01 00:25:44 +00:00
Dan Gohman
25c1653700 Get rid of the EdgeMapping map. Instead, just check for BasicBlock 
changes before doing phi lowering for switches.

llvm-svn: 102809
 2010-05-01 00:01:06 +00:00
Dan Gohman
09452cecd8 Remove this debug output. The MachineFunction will be printed once all of 
instruction selection is done; it's confusing to see parts of it printed,
while other parts are omitted, along the way.

llvm-svn: 102771
 2010-04-30 21:21:21 +00:00
Evan Cheng
923679f929 Re-enable 102565 with fixes. 
llvm-svn: 102602
 2010-04-29 06:33:38 +00:00
Evan Cheng
d65a1e782b Temporarily disable my changes to unbreak the build. 
llvm-svn: 102590
 2010-04-29 03:34:19 +00:00
Evan Cheng
70a0145d7c Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block. 
llvm-svn: 102581
 2010-04-29 01:23:55 +00:00
Evan Cheng
f4336ebb2a Check Reg against zero. 
llvm-svn: 102573
 2010-04-29 00:59:34 +00:00
Evan Cheng
6e822459ed Replace r102368 with code that's less fragile. This creates DBG_VALUE instructions for function arguments early and insert them after instruction selection is done. 
llvm-svn: 102554
 2010-04-28 23:08:54 +00:00
Dan Gohman
6e9a8fcc28 Move FastISel's HandlePHINodesInSuccessorBlocks call down into FastISel 
itself too.

llvm-svn: 102176
 2010-04-23 15:29:50 +00:00
Dan Gohman
5b43aa0ddd Sink SelectionDAGBuilder's HandlePHINodesInSuccessorBlocks down 
into SelectionDAGBuilder itself.

llvm-svn: 102128
 2010-04-22 20:55:53 +00:00
Dan Gohman
c594eab10f Move HandlePHINodesInSuccessorBlocks functions out of SelectionDAGISel 
and into SelectionDAGBuilder and FastISel.

llvm-svn: 102123
 2010-04-22 20:46:50 +00:00
Dan Gohman
fd81254190 Move PHINodesToUpdate out of SelectionDAGBuilder and into 
FunctionLoweringInfo, as it isn't SelectionDAG-specific. This isn't
completely natural, as PHI node state is not per-function but rather
per-basic-block, however there's currently no other convenient
per-basic-block state to group it with.

llvm-svn: 102109
 2010-04-22 19:55:20 +00:00
Dan Gohman
57c732b032 Add more const qualifiers on TargetMachine and friends. 
llvm-svn: 101977
 2010-04-21 01:34:56 +00:00
Dan Gohman
950fe784be Sink the CopyToExportRegsIfNeeded calls out of SelectionDAGISel 
into SelectionDAGBuilder. This avoids a separate pass over the
instructions, and has the side effect of providing debug location
information to the copy.

llvm-svn: 101906
 2010-04-20 15:03:56 +00:00
Dan Gohman
f41ad478ca Don't send PHI nodes down to SelectionDAGBuilder of FastISel, since 
they end up doing nothing.

llvm-svn: 101904
 2010-04-20 15:00:41 +00:00
Dan Gohman
eadc04badc Remove this debug output; it isn't that useful, and it's incomplete 
in the case where a basic block is split.

llvm-svn: 101850
 2010-04-20 00:56:44 +00:00
Dan Gohman
e450d7444d Sink DebugLoc handling out of SelectionDAGISel into FastISel and 
SelectionDAGBuilder, where it doesn't have to be as complicated.

llvm-svn: 101848
 2010-04-20 00:48:35 +00:00
Dan Gohman
3df671a81c Remove MachineFunction's DefaultDebugLoc member, and make DwarfDebug.cpp 
responsible for figuring out what that's supposed to be on its own.

llvm-svn: 101844
 2010-04-20 00:37:27 +00:00
Dan Gohman
ca35aa1122 Reapply the removal of SelectionDAGISel's BB, with a fix for the case 
where multiple blocks are emitted; functions which do this need to return
the new BB so that their callers can stay current.

llvm-svn: 101843
 2010-04-20 00:29:35 +00:00
Dan Gohman
be2e727a38 Revert 101825, which is causing trouble. 
llvm-svn: 101832
 2010-04-19 23:34:15 +00:00
Dan Gohman
8cccc542f6 Eliminate SelectionDAGISel's "current block" member. Just pass it as 
an argument to things that need it.

llvm-svn: 101825
 2010-04-19 22:51:14 +00:00
Dan Gohman
7c0303a059 Eliminate the CurMBB member from SelectionDAGBuilder. For places that 
need it, just pass around the parent block of the current instruction
explicitly.

llvm-svn: 101822
 2010-04-19 22:41:47 +00:00
Dan Gohman
1e95790fd4 Give SelectionDAG a TargetMachine too, rather than having it 
fetch one from the MachineFunction.

llvm-svn: 101807
 2010-04-19 19:22:07 +00:00
Dan Gohman
c334960f16 Code that needs a TargetMachine should have access to one directly, rather 
than just getting one through a TargetLowering.

llvm-svn: 101802
 2010-04-19 19:05:59 +00:00
Dan Gohman
21cea8ac2e Use const qualifiers with TargetLowering. This eliminates several 
const_casts, and it reinforces the design of the Target classes being
immutable.

SelectionDAGISel::IsLegalToFold is now a static member function, because
PIC16 uses it in an unconventional way. There is more room for API
cleanup here.

And PIC16's AsmPrinter no longer uses TargetLowering.

llvm-svn: 101635
 2010-04-17 15:26:15 +00:00
Evan Cheng
f1bd5fcdb4 More work to allow dag combiner to promote 16-bit ops to 32-bit. 
llvm-svn: 101621
 2010-04-17 06:13:15 +00:00
Dan Gohman
3a7ee8eead Avoid creating virtual registers for unused values. 
llvm-svn: 101480
 2010-04-16 17:15:02 +00:00
Dan Gohman
4572a9f479 Fix a comment. 
llvm-svn: 101477
 2010-04-16 16:52:37 +00:00
Dan Gohman
5563473062 Refine further the scope where the global DebugLoc value is active. 
llvm-svn: 101443
 2010-04-16 05:06:56 +00:00
Dan Gohman
b29cda9b3c Fix a bunch of namespace polution. 
llvm-svn: 101376
 2010-04-15 17:08:50 +00:00
Dan Gohman
913c998703 Add more const qualifiers for LLVM IR pointers in CodeGen. 
llvm-svn: 101342
 2010-04-15 04:33:49 +00:00
Dan Gohman
bcaf681cde Add const qualifiers to CodeGen's use of LLVM IR constructs. 
llvm-svn: 101334
 2010-04-15 01:51:59 +00:00
Dan Gohman
a3918ecdf5 Delete unused arguments. 
llvm-svn: 101275
 2010-04-14 20:05:00 +00:00
Dan Gohman
7deb447781 Factor out EH landing pad code into a separate function, and constify 
a bunch of stuff to support it.

llvm-svn: 101273
 2010-04-14 19:53:31 +00:00
Dan Gohman
c2c08d19b8 Reset the debug location even if the instruction was a terminator. 
llvm-svn: 101272
 2010-04-14 19:30:02 +00:00
Dan Gohman
3215eae4a3 Delete an unused function. 
llvm-svn: 101263
 2010-04-14 17:22:02 +00:00
Dan Gohman
094fc7b09e Clear the FunctionLoweringInfo object before doing other things that 
don't need it.

llvm-svn: 101262
 2010-04-14 17:13:16 +00:00
Dan Gohman
ad0b3ea3cc Move this assert out of SelectionDAGISel into FunctionLoweringInfo, and 
drop the redundant #ifndef NDEBUG.

llvm-svn: 101261
 2010-04-14 17:11:23 +00:00
Dan Gohman
0f405c8d73 Add a comment. 
llvm-svn: 101260
 2010-04-14 17:09:37 +00:00
Dan Gohman
2ca8fb229c Move the code for initialing the entry block livein set out of 
SelectionDAGISel.

llvm-svn: 101258
 2010-04-14 17:05:00 +00:00
Dan Gohman
4bfb437ec9 Reorgnaize this code to be more tidy and readable. 
llvm-svn: 101256
 2010-04-14 17:02:07 +00:00
Dan Gohman
1939b5f130 Trim #includes. 
llvm-svn: 101255
 2010-04-14 16:54:39 +00:00
Dan Gohman
2b79ee8bc8 Move the code for emitting livein copies out of SelectionDAGISel. 
llvm-svn: 101254
 2010-04-14 16:51:49 +00:00
Dan Gohman
69e8e322d9 Sink landing-pad marking code out of 
SelectionDAGISel::runOnMachineFunction into FunctionLowering.

llvm-svn: 101252
 2010-04-14 16:32:56 +00:00
Chris Lattner
94ef52824b minor tidying. 
llvm-svn: 100725
 2010-04-07 23:50:38 +00:00
Chris Lattner
2104b8d36e rename llvm::llvm_report_error -> llvm::report_fatal_error 
llvm-svn: 100709
 2010-04-07 22:58:41 +00:00
Chris Lattner
3b9f02a2aa Three changes: 
1. Introduce some enums and accessors in the InlineAsm class
   that eliminate a ton of magic numbers when handling inline
   asm SDNode.
2. Add a new MDNodeSDNode selection dag node type that holds
   a MDNode (shocking!)
3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc
   metadata, propagating it to the instruction emitter, which
   drops it.

No functionality change.

llvm-svn: 100605
 2010-04-07 05:20:54 +00:00
Chris Lattner
6361414c88 remove some redundant MMI arguments. 
llvm-svn: 100417
 2010-04-05 06:10:13 +00:00