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6657 Commits

Author SHA1 Message Date
Dan Gohman
bed353d016 Consider any instruction that modifies the stack pointer to be 
a scheduling region boundary.  This isn't necessary for
correctness; it helps with compile time, as it avoids the need
for data- and anti-dependencies from all spills and reloads on
the stack-pointer modification.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64255 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 23:29:38 +00:00
Dan Gohman
9e64bbb322 Factor out more code for computing register live-range informationfor 
scheduling, and generalize is so that preserves state across
scheduling regions. This fixes incorrect live-range information around
terminators and labels, which are effective region boundaries.

In place of looking for terminators to anchor inter-block dependencies,
introduce special entry and exit scheduling units for this purpose.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64254 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 23:27:53 +00:00
Evan Cheng
f0e366a929 Fix PR3457: Ignore control successors when looking for closest scheduled successor. A control successor doesn't read result(s) produced by the scheduling unit being evaluated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64210 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 08:30:11 +00:00
Devang Patel
2303df96b0 Validate file id. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64204 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-10 06:04:08 +00:00
Evan Cheng
4ded02f8bd If the target cannot issue a copy for the given source and dest registers, abort instead of silently continue. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 22:47:36 +00:00
Evan Cheng
65b52dffe0 Simplify code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64164 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 21:01:06 +00:00
Evan Cheng
b1032a8a2f Make sure constant subscript is truncated to ptr size if it may not fit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64163 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 20:54:38 +00:00
Evan Cheng
8f0d99e463 Re-enable machine sinking pass now that the coalescer bugs and the AnalyzeBrnach bug are fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 08:45:39 +00:00
Evan Cheng
190424edcd Fix another case ShortenDeadCopySrcLiveRange is shortening too much. No test case possible since I don't know what to grep for. :-( 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64125 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 08:37:45 +00:00
Evan Cheng
dc54d317e7 Turns out AnalyzeBranch can modify the mbb being analyzed. This is a nasty 
suprise to some callers, e.g. register coalescer. For now, add an parameter
that tells AnalyzeBranch whether it's safe to modify the mbb. A better
solution is out there, but I don't have time to deal with it right now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64124 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-09 07:14:22 +00:00
Evan Cheng
0a1fcce092 Fix PR3486. Fix a bug in code that manually patch physical register live interval after its sub-register is coalesced with a virtual register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64082 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 11:04:35 +00:00
Evan Cheng
86fb9fdb20 Strengthen the previous check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64076 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 08:24:28 +00:00
Evan Cheng
f18134a1ae r64073 commit message is lost. Here it is: 
Right now if the coalesced copy def is dead and its src is a kill, and that
there are now other uses within the live range, the coalescer would mark the
def of the source register as dead. But it should also check if there are
other kills which means the value has other uses not in the live range.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64075 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 08:00:36 +00:00
Evan Cheng
77fde2cbb1 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64073 91177308-0d34-0410-b5e6-96231b3b80d8 2009-02-08 07:48:37 +00:00
Bill Wendling
7f51fd3ea9 Revert r63999. It was breaking self-hosting builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-08 00:58:05 +00:00
Chris Lattner
556b4a6385 Add missing break statements, fixing PR3503. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64040 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 22:37:06 +00:00
Dale Johannesen
6f38cb61a9 Use getDebugLoc forwarder instead of getNode()->getDebugLoc. 
No functional change.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 19:59:05 +00:00
Dan Gohman
1fdbc1dd4e Constify TargetInstrInfo::EmitInstrWithCustomInserter, allowing 
ScheduleDAG's TLI member to use const.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64018 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 16:15:20 +00:00
Dale Johannesen
92570c4a1a Make SDNode constructors take a DebugLoc always. 
Adjust derived classes to pass UnknownLoc where
a DebugLoc does not make sense.  Pick one of
DebugLoc and non-DebugLoc variants to survive
for all such classes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64000 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 02:15:05 +00:00
Evan Cheng
c963b638c7 Enable machine sinking pass in non-fast mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 01:57:46 +00:00
Dale Johannesen
edb62c484e Remove now-unused constructors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63995 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 01:27:09 +00:00
Evan Cheng
b6f5417edb Don't sink the instruction if TargetRegisterInfo::isSafeToMoveRegClassDefs doesn't think it's safe. This works around PR1911. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 01:21:47 +00:00
Dale Johannesen
b300d2aa3e Get rid of the last non-DebugLoc versions of getNode! 
Many targets build placeholder nodes for special operands, e.g.
GlobalBaseReg on X86 and PPC for the PIC base.  There's no
sensible way to associate debug info with these.  I've left
them built with getNode calls with explicit DebugLoc::getUnknownLoc operands. 
I'm not too happy about this but don't see a good improvement;
I considered adding a getPseudoOperand or something, but it
seems to me that'll just make it harder to read.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63992 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-07 00:55:49 +00:00
Dale Johannesen
e8d7230f48 Remove more non-DebugLoc getNode variants. Use 
getCALLSEQ_{END,START} to permit passing no DebugLoc
there.  UNDEF doesn't logically have DebugLoc; add
getUNDEF to encapsulate this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 23:05:02 +00:00
Dale Johannesen
e72c5964d5 And one more file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 21:55:48 +00:00
Dale Johannesen
de06470330 Remove more non-DebugLoc versions of getNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63969 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 21:50:26 +00:00
Bill Wendling
8fcf170a66 Clear out the CurDebugLoc info when doing a 'clear' on the SDL object. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63967 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 21:36:23 +00:00
Dale Johannesen
f5f5dce897 Eliminate remaining non-DebugLoc version of getTargetNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63951 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 19:16:40 +00:00
Dan Gohman
0a3776dc6f Rename SelectionDAGISel::Schedule to 
SelectionDAGISel::CreateScheduler, and make it just create the
scheduler. Leave running the scheduler to the higher-level code.
This makes the higher-level code a little more explicit and
easier to follow, and will help enable some future refactoring.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63944 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 18:26:51 +00:00
Dan Gohman
56774d2b0d Delete an unused member function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63941 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 18:19:52 +00:00
Evan Cheng
770bcc7b15 Move getPointerRegClass from TargetInstrInfo to TargetRegisterInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63938 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 17:43:24 +00:00
Dan Gohman
84fbac5809 Move ScheduleDAGSDNodes.h to be a private header. Front-ends 
that previously included this header should include
SchedulerRegistry.h instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63937 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 17:22:58 +00:00
Evan Cheng
4350eb86a7 Add TargetInstrInfo::isSafeToMoveRegisterClassDefs. It returns true if it's safe to move an instruction which defines a value in the register class. Replace pre-splitting specific IgnoreRegisterClassBarriers with this new hook. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63936 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 17:17:30 +00:00
Dan Gohman
6dc75fe527 Move ScheduleDAGInstrs.h to be a private header. Front-ends 
that used this header to select a scheduling policy should
use SchedulerRegistry.h instead (llvm-gcc and clang were
updated a while ago).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63934 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 17:12:10 +00:00
Dale Johannesen
f90b2a7742 get rid of some non-DebugLoc getTargetNode variants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63909 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 02:08:06 +00:00
Dale Johannesen
ed2eee63a6 Get rid of one more non-DebugLoc getNode and 
its corresponding getTargetNode.  Lots of
caller changes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63904 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-06 01:31:28 +00:00
Evan Cheng
54801f78b1 isAsCheapAsMove instructions can have register src operands. Check if they are really re-materializable. 
This fixes sse.expandfft and sse.stepfft.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63890 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 22:24:17 +00:00
Dale Johannesen
3484c09e0d Remove a non-DebugLoc version of getNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 22:07:54 +00:00
Dale Johannesen
9b36c631eb Remove 3 non-DebugLoc variants of getNode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63886 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 21:20:44 +00:00
Evan Cheng
740854bb19 Machine LICM increases register pressure and it almost always increase code size. For now, disable it for optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63856 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 08:51:13 +00:00
Evan Cheng
c5d1a4ffd9 Turn on machine LICM in non-fast mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63855 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 08:46:33 +00:00
Evan Cheng
af6949d0b1 Teach machine licm to CSE hoisted instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63854 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 08:45:46 +00:00
Evan Cheng
961154f2db ReMaterializeTrivialDef need to trim the live interval to the last kill if the copy kills the source register. This fixes uint64tof64.ll after ARM::MOVi is marked as isAsCheapAsAMove. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63853 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 08:45:04 +00:00
Chris Lattner
4798bbeaf5 if we have a large GEP offset on a 32-bit or other target, make 
sure to print the value properly sext'd to the right pointer size.
This fixes PR3481.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63843 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 06:55:21 +00:00
Owen Anderson
5734c94ec2 Pre-alloc splitting needs to be more careful to avoid inserting spills/restores 
between call frame setup/restore points.  Unfortunately, this regresses 
code size a bit, but at least it's correct now!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63837 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 05:58:41 +00:00
Mon P Wang
b0e341bca1 Fix a bug where we were not emitting a cvt rnd sat node for converting 
between a unsigned integer and signed integer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63831 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 04:47:42 +00:00
Dale Johannesen
49de98214b Reapply 63765. Patches for clang and llvm-gcc to follow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63812 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 01:49:45 +00:00
Dale Johannesen
2fabcb2776 Get rid of 3 non-DebugLoc getNode variants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63808 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 01:01:16 +00:00
Dale Johannesen
4be0bdf7c1 Remove non-DebugLoc versions of getMergeValues, ZeroExtendInReg. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63800 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-05 00:20:09 +00:00
Dale Johannesen
a05dca4f9e Remove non-DebugLoc forms of CopyToReg and CopyFromReg. 
Adjust callers.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63789 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-02-04 23:02:30 +00:00