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4259 Commits

Author SHA1 Message Date
Bob Wilson a1e343095f Avoid adding a null MD node operand, which crashes with "-debug" when trying 
to print the operand.

llvm-svn: 102395
 2010-04-26 22:56:56 +00:00
Dale Johannesen 59a438560c Remove crufty comments. 
llvm-svn: 102380
 2010-04-26 20:48:54 +00:00
Dale Johannesen e098352ed1 Add DBG_VALUE handling for byval parameters; this 
produces a comment on targets that support it, but
the Dwarf writer is not hooked up yet.

llvm-svn: 102372
 2010-04-26 20:06:49 +00:00
Evan Cheng ed69b382ea - Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo and rename it to emitFrameIndexDebugValue. 
- Teach spiller to modify DBG_VALUE instructions to reference spill slots.

llvm-svn: 102323
 2010-04-26 07:38:55 +00:00
Dale Johannesen 582565e991 Stop abusing EmitInstrWithCustomInserter for target-dependent 
form of DEBUG_VALUE, as it doesn't have reasonable default
behavior for unsupported targets.  Add a new hook instead.
No functional change.

llvm-svn: 102320
 2010-04-25 21:33:54 +00:00
Dale Johannesen 1fc01985a3 Add comment re byval args. Doesn't actually work this way yet. 
xs

llvm-svn: 102316
 2010-04-25 21:03:54 +00:00
Evan Cheng 0abb54d631 When a load operand is promoted to an extload, replace other uses with uses of extload result truncated. 
llvm-svn: 102236
 2010-04-24 04:43:44 +00:00
Dan Gohman 5544b0c588 Apply a fix for a vector setcc dagcombine from Jan Sjodin. No 
testcase yet, as the testcase now fails downstream.

llvm-svn: 102228
 2010-04-24 01:17:30 +00:00
Evan Cheng b9ff130d47 Code refactoring. 
llvm-svn: 102202
 2010-04-23 19:10:30 +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
Evan Cheng f1223bdec0 - It's not safe to promote rotates (at least not trivially). 
- Some code refactoring.

llvm-svn: 102111
 2010-04-22 20:19:46 +00:00
Dan Gohman e149e9896c Fix a comment. 
llvm-svn: 102110
 2010-04-22 20:06:42 +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 450aa64fc1 Move several SelectionDAG-independent utility functions out of the 
SelectionDAG directory and into a new Analysis.cpp file.

llvm-svn: 101975
 2010-04-21 01:22:34 +00:00
Dan Gohman ad33d33719 Add another variant of this test which found a place where 
CodeGen's ComputeMaskedBits was being over-conservative when computing
bits for an ADD.

llvm-svn: 101963
 2010-04-21 00:19:28 +00:00
Dale Johannesen 0522b90cdb Because of the EMMS problem, right now we have to support 
user-defined operations that use MMX register types, but
the compiler shouldn't generate them on its own.  This adds
a Synthesizable abstraction to represent this, and changes
the vector widening computation so it won't produce MMX types.
(The motivation is to remove noise from the ABI compatibility
part of the gcc test suite, which has some breakage right now.)

llvm-svn: 101951
 2010-04-20 22:34:09 +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 7c845e4ea4 Sink this use_empty() check into isUsedOutsideOfDefiningBlock. 
llvm-svn: 101902
 2010-04-20 14:50:13 +00:00
Dan Gohman 7b7f0883fe If a PHI node somehow has debug info, propogate it to the MachineInstr PHI. 
llvm-svn: 101901
 2010-04-20 14:48:02 +00:00
Dan Gohman 0f055d3f56 Don't iterate through the whole block just to find the PHI nodes. 
llvm-svn: 101900
 2010-04-20 14:46:25 +00:00
Dan Gohman 0c862a86fa Delete a redundant return statement. 
llvm-svn: 101860
 2010-04-20 01:58:20 +00:00
Bill Wendling 467e6c2deb The visitXOR method can return the same SDNode. If so, we don't want to delete 
it as it's not dead.

llvm-svn: 101855
 2010-04-20 01:25:01 +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
Evan Cheng e19aa5cc52 More progress on promoting i16 operations to i32 for x86. Work in progress. 
llvm-svn: 101808
 2010-04-19 19:29:22 +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
Evan Cheng e7c21a4242 More 80 col violation. 
llvm-svn: 101806
 2010-04-19 19:17:44 +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 a91754da67 Move isInTailCallPosition out of SelectionDAGBuilder, as it isn't 
SelectionDAG-specific.

llvm-svn: 101801
 2010-04-19 18:41:46 +00:00
Dan Gohman 1f0f2142cc Fix -Wcast-qual warnings. 
llvm-svn: 101655
 2010-04-17 17:42:52 +00:00
Dan Gohman 8422e57baa Delete now-unnecessary const_casts. 
llvm-svn: 101637
 2010-04-17 15:32:28 +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
Evan Cheng 829c300ce0 Another 80 col violation. 
llvm-svn: 101620
 2010-04-17 06:12:32 +00:00
Eric Christopher 7258dcd77f Revert 101465, it broke internal OpenGL testing. 
Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.

llvm-svn: 101579
 2010-04-16 23:37:20 +00:00
Evan Cheng f037f87bde (i32 sext_in_reg (i32 aext (i16 x)), i16) -> (i32 sext x). No known test case until -promote-16bit is enabled. 
llvm-svn: 101551
 2010-04-16 22:26:19 +00:00
Dan Gohman c4759a5b97 Create a new TargetSelectionDAGInfo class. This will eventually acquire 
SelectionDAG-specific parts of TargetLowering.

llvm-svn: 101537
 2010-04-16 21:12:11 +00:00
Dan Gohman 4d273f4519 Commit this, which should have accompanied 101531. 
llvm-svn: 101532
 2010-04-16 20:22:43 +00:00
Evan Cheng 954bd598dd 80 col. 
llvm-svn: 101501
 2010-04-16 17:58:41 +00:00
Evan Cheng d6b0a7c075 80 col. 
llvm-svn: 101500
 2010-04-16 17:57:59 +00:00
Dan Gohman 3a7ee8eead Avoid creating virtual registers for unused values. 
llvm-svn: 101480
 2010-04-16 17:15:02 +00:00