ddee3cb163
Add FIXME comment to remove this.
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llvm-svn: 104749
2010-05-26 21:53:50 +00:00
27311269cb
Add "setjmp_syscall", "savectx", "qsetjmp", "vfork", "getcontext" to the list of
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usual suspects that could "return twice".
llvm-svn: 104737
2010-05-26 20:39:00 +00:00
1b08572a66
Update debug info when live-in reg is copied into a vreg.
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llvm-svn: 104732
2010-05-26 20:18:50 +00:00
0c3bfd3fb0
Move the check for "calls setjmp" to SelectionDAGISel so that it can be used by
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more than just the stack slot coloring algorithm.
llvm-svn: 104722
2010-05-26 19:46:12 +00:00
e805ea9e39
Temporarily revert r104655 as it's breaking the bots.
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llvm-svn: 104664
2010-05-26 01:59:55 +00:00
c5222d6c38
Dale and Evan suggested putting the "check for setjmp" much earlier in the
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machine code generation. That's a good idea, so I made it so.
llvm-svn: 104655
2010-05-26 00:32:40 +00:00
bdd062dae0
Add a hybrid bottom up scheduler that reduce register usage while avoiding
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pipeline stall. It's useful for targets like ARM cortex-a8. NEON has a lot
of long latency instructions so a strict register pressure reduction
scheduler does not work well.
Early experiments show this speeds up some NEON loops by over 30%.
llvm-svn: 104216
2010-05-20 06:13:19 +00:00
738e920edf
Code refactoring: pull SchedPreference enum from TargetLowering.h to TargetMachine.h and put it in its own namespace.
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llvm-svn: 104147
2010-05-19 20:19:50 +00:00
02d3368831
- Set the "HasCalls" flag after instruction selection is finished.
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- Change the logic DisableFramePointerElim() to check for the
-disable-non-leaf-fp-elim before -disable-fp-elim.
llvm-svn: 103990
2010-05-17 23:09:50 +00:00
95f6ebcb37
Rename "HasCalls" in MachineFrameInfo to "AdjustsStack" to better describe what
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the variable actually tracks.
N.B., several back-ends are using "HasCalls" as being synonymous for something
that adjusts the stack. This isn't 100% correct and should be looked into.
llvm-svn: 103802
2010-05-14 21:14:32 +00:00
55869af998
Instruction selection optimizations may have moved the def of a function argument out of the entry block. rdar://7937489
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llvm-svn: 102993
2010-05-04 00:58:39 +00:00
ec74444d3e
Remove the code for special-casing byval for fast-isel. SelectionDAG
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handles argument lowering anyway, so there's no need for special
casing here.
llvm-svn: 102828
2010-05-01 02:44:23 +00:00
096619eb52
Fix whitespace.
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llvm-svn: 102817
2010-05-01 00:33:28 +00:00
5d059718c9
Reorgnaize more switch code lowering to clean up some tricky
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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
25c1653700
Get rid of the EdgeMapping map. Instead, just check for BasicBlock
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changes before doing phi lowering for switches.
llvm-svn: 102809
2010-05-01 00:01:06 +00:00
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
923679f929
Re-enable 102565 with fixes.
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llvm-svn: 102602
2010-04-29 06:33:38 +00:00
d65a1e782b
Temporarily disable my changes to unbreak the build.
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llvm-svn: 102590
2010-04-29 03:34:19 +00:00
70a0145d7c
Avoid emitting a dbg_value machineinstr that's not going to be inserted into entry block.
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llvm-svn: 102581
2010-04-29 01:23:55 +00:00
f4336ebb2a
Check Reg against zero.
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llvm-svn: 102573
2010-04-29 00:59:34 +00:00
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.
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llvm-svn: 102554
2010-04-28 23:08:54 +00:00
6e9a8fcc28
Move FastISel's HandlePHINodesInSuccessorBlocks call down into FastISel
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itself too.
llvm-svn: 102176
2010-04-23 15:29:50 +00:00
5b43aa0ddd
Sink SelectionDAGBuilder's HandlePHINodesInSuccessorBlocks down
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into SelectionDAGBuilder itself.
llvm-svn: 102128
2010-04-22 20:55:53 +00:00
c594eab10f
Move HandlePHINodesInSuccessorBlocks functions out of SelectionDAGISel
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and into SelectionDAGBuilder and FastISel.
llvm-svn: 102123
2010-04-22 20:46:50 +00:00
fd81254190
Move PHINodesToUpdate out of SelectionDAGBuilder and into
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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
57c732b032
Add more const qualifiers on TargetMachine and friends.
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llvm-svn: 101977
2010-04-21 01:34:56 +00:00
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
f41ad478ca
Don't send PHI nodes down to SelectionDAGBuilder of FastISel, since
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they end up doing nothing.
llvm-svn: 101904
2010-04-20 15:00:41 +00:00
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
e450d7444d
Sink DebugLoc handling out of SelectionDAGISel into FastISel and
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SelectionDAGBuilder, where it doesn't have to be as complicated.
llvm-svn: 101848
2010-04-20 00:48:35 +00:00
3df671a81c
Remove MachineFunction's DefaultDebugLoc member, and make DwarfDebug.cpp
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responsible for figuring out what that's supposed to be on its own.
llvm-svn: 101844
2010-04-20 00:37:27 +00:00
ca35aa1122
Reapply the removal of SelectionDAGISel's BB, with a fix for the case
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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
be2e727a38
Revert 101825, which is causing trouble.
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llvm-svn: 101832
2010-04-19 23:34:15 +00:00
8cccc542f6
Eliminate SelectionDAGISel's "current block" member. Just pass it as
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an argument to things that need it.
llvm-svn: 101825
2010-04-19 22:51:14 +00:00
7c0303a059
Eliminate the CurMBB member from SelectionDAGBuilder. For places that
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need it, just pass around the parent block of the current instruction
explicitly.
llvm-svn: 101822
2010-04-19 22:41:47 +00:00
1e95790fd4
Give SelectionDAG a TargetMachine too, rather than having it
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fetch one from the MachineFunction.
llvm-svn: 101807
2010-04-19 19:22:07 +00:00
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
21cea8ac2e
Use const qualifiers with TargetLowering. This eliminates several
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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
f1bd5fcdb4
More work to allow dag combiner to promote 16-bit ops to 32-bit.
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llvm-svn: 101621
2010-04-17 06:13:15 +00:00
3a7ee8eead
Avoid creating virtual registers for unused values.
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llvm-svn: 101480
2010-04-16 17:15:02 +00:00
4572a9f479
Fix a comment.
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llvm-svn: 101477
2010-04-16 16:52:37 +00:00
5563473062
Refine further the scope where the global DebugLoc value is active.
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llvm-svn: 101443
2010-04-16 05:06:56 +00:00
b29cda9b3c
Fix a bunch of namespace polution.
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llvm-svn: 101376
2010-04-15 17:08:50 +00:00
913c998703
Add more const qualifiers for LLVM IR pointers in CodeGen.
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llvm-svn: 101342
2010-04-15 04:33:49 +00:00
bcaf681cde
Add const qualifiers to CodeGen's use of LLVM IR constructs.
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llvm-svn: 101334
2010-04-15 01:51:59 +00:00
a3918ecdf5
Delete unused arguments.
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llvm-svn: 101275
2010-04-14 20:05:00 +00:00
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
c2c08d19b8
Reset the debug location even if the instruction was a terminator.
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llvm-svn: 101272
2010-04-14 19:30:02 +00:00
3215eae4a3
Delete an unused function.
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llvm-svn: 101263
2010-04-14 17:22:02 +00:00
094fc7b09e
Clear the FunctionLoweringInfo object before doing other things that
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don't need it.
llvm-svn: 101262
2010-04-14 17:13:16 +00:00
Bill Wendling