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8372 Commits

Author SHA1 Message Date
David Goodwin
2bc2d833ab <rdar://problem/7453528>. Track only physical registers that are valid for the target. 
llvm-svn: 90970
 2009-12-09 17:18:22 +00:00
Lang Hames
a5a7da896e Added a new "splitting" spiller. 
When a call is placed to spill an interval this spiller will first try to
break the interval up into its component values. Single value intervals and
intervals which have already been split (or are the result of previous splits)
are spilled by the default spiller.

Splitting intervals as described above may improve the performance of generated
code in some circumstances. This work is experimental however, and it still
miscompiles many benchmarks. It's not recommended for general use yet.

llvm-svn: 90951
 2009-12-09 05:39:12 +00:00
Evan Cheng
41c13e41fe Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code. 
llvm-svn: 90925
 2009-12-09 01:53:58 +00:00
Evan Cheng
7941695285 Move isConsecutiveLoad to SelectionDAG. It's not target dependent and it's primary used by selectdag passes. 
llvm-svn: 90922
 2009-12-09 01:36:00 +00:00
Evan Cheng
ad75af2aa2 Infer alignment for non-fixed stack object. 
llvm-svn: 90919
 2009-12-09 01:17:24 +00:00
Evan Cheng
293ec7b394 Add const qualifier. 
llvm-svn: 90918
 2009-12-09 01:10:37 +00:00
Evan Cheng
b925774a74 Refactor InferAlignment out of DAGCombine. 
llvm-svn: 90917
 2009-12-09 01:04:59 +00:00
Devang Patel
11874672da Revert 90858 90875 and 90805 for now. 
llvm-svn: 90898
 2009-12-08 23:21:45 +00:00
Devang Patel
5905a705fe Cleanup. 
There is no need to supply ModuleCU to addType() as a parameter.

llvm-svn: 90858
 2009-12-08 15:31:31 +00:00
Devang Patel
cb39ef375f Do not try to push dead variable's debug info into namespace info. 
llvm-svn: 90857
 2009-12-08 15:01:35 +00:00
Evan Cheng
58a787bc55 Watch out for duplicated PHI instructions. 
llvm-svn: 90816
 2009-12-07 23:11:03 +00:00
Evan Cheng
fe32f969cd Follow up to 90488. Turn a check into an assertion. 
llvm-svn: 90815
 2009-12-07 23:10:34 +00:00
Devang Patel
e59f4f7204 Add support to emit debug info for c++ style namespaces. 
llvm-svn: 90805
 2009-12-07 21:41:32 +00:00
Evan Cheng
72c07bfcad Delete code accidentally left behind. 
llvm-svn: 90804
 2009-12-07 21:19:33 +00:00
Evan Cheng
79d3b53208 Pre-regalloc tale duplication. Work in progress. 
llvm-svn: 90759
 2009-12-07 10:15:19 +00:00
Evan Cheng
2a99985e86 If BB is empty, insert PHI before end() instead of front(). 
llvm-svn: 90744
 2009-12-07 03:07:01 +00:00
Anton Korobeynikov
b4b8c71b20 Truncate the arguments of llvm.frameaddress / llvm.returnaddress intrinsics from i32 to platform's largest native type 
llvm-svn: 90741
 2009-12-07 02:28:26 +00:00
Dan Gohman
e6ce676cb2 Remove old DBG_LABEL code. 
llvm-svn: 90669
 2009-12-05 17:56:26 +00:00
Dan Gohman
d2797bf9ae Remove the unused DisableLegalizeTypes option and related code. 
llvm-svn: 90668
 2009-12-05 17:51:33 +00:00
Bill Wendling
887646a585 Temporarily revert r90502. It was causing the llvm-gcc bootstrap on PPC to fail. 
llvm-svn: 90653
 2009-12-05 07:30:23 +00:00
Dan Gohman
bdf1b76e0f Don't print a space before the : between the file name and line number. 
And separate the directory and file name with a '/'.

llvm-svn: 90641
 2009-12-05 02:00:34 +00:00
Dan Gohman
b2fda9f9f4 Print newlines after printing labels for debug info, so that the output 
isn't cluttered with things like "Llabel47:Llabel48:  movq  (%rsi), %xmm3"

llvm-svn: 90638
 2009-12-05 01:42:34 +00:00
Dan Gohman
b352b42391 Don't blindly set the debug location for PHI node copies. 
llvm-svn: 90637
 2009-12-05 01:29:04 +00:00
Dan Gohman
c9454cd34f Make TargetSelectInstruction protected and called from FastISel.cpp 
instead of SelectionDAGISel.cpp.

llvm-svn: 90636
 2009-12-05 01:27:58 +00:00
Dan Gohman
f9654e9258 Remove the target hook TargetInstrInfo::BlockHasNoFallThrough in favor of 
MachineBasicBlock::canFallThrough(), which is target-independent and more
thorough.

llvm-svn: 90634
 2009-12-05 00:44:40 +00:00
Dan Gohman
fc11083645 Simplify this code: don't call AnalyzeBranch before doing simpler checks. 
llvm-svn: 90633
 2009-12-05 00:32:59 +00:00
Dan Gohman
feeb2f07a1 The debug information for an LLVM Instruction applies to that Instruction 
and that Instruction only. Implement this by setting the "current debug position"
back to Unknown after processing each instruction.

llvm-svn: 90632
 2009-12-05 00:27:08 +00:00
Dan Gohman
cf29c2243b Fix this code to use DIScope instead of DICompileUnit, as in r90181. 
Don't print "SrcLine"; just print the filename and line number, which
is obvious enough and more informative.

llvm-svn: 90631
 2009-12-05 00:23:29 +00:00
Dan Gohman
309e2283ab Don't print the debug directory; it's often long and uninteresting. Omit 
the column number if it is not known. Handle the case of a missing filename
better.

llvm-svn: 90630
 2009-12-05 00:20:51 +00:00
Dan Gohman
e6b70ddf0c Print a space between the comment character and the text. 
llvm-svn: 90621
 2009-12-04 23:19:55 +00:00
Devang Patel
10e8f51059 In TAG_subrange_type, uppder bound is zero indexed. 
llvm-svn: 90617
 2009-12-04 23:10:24 +00:00
David Greene
d75891618c Use new interfaces to print spill size. 
llvm-svn: 90611
 2009-12-04 22:46:04 +00:00
Evan Cheng
d587159de8 Handle recursive PHI's. 
llvm-svn: 90575
 2009-12-04 19:09:10 +00:00
Evan Cheng
0b005cade5 Add a pre-regalloc tail duplication pass. 
llvm-svn: 90567
 2009-12-04 09:42:45 +00:00
Evan Cheng
30aa0aa350 Don't try to be cute with undef optimization here. Let ProcessImplicitDefs handle it. 
llvm-svn: 90566
 2009-12-04 09:23:37 +00:00
Duncan Sands
90101348bd Add note about a subtle bug in this code. Does not effect the main 
architectures that LLVM targets, because they don't use this code.

llvm-svn: 90564
 2009-12-04 08:42:17 +00:00
Jakob Stoklund Olesen
7c5af26d12 Also attempt trivial coalescing for live intervals that end in a copy. 
The coalescer is supposed to clean these up, but when setting up parameters
for a function call, there may be copies to physregs. If the defining
instruction has been LICM'ed far away, the coalescer won't touch it.

The register allocation hint does not always work - when the register
allocator is backtracking, it clears the hints.

This patch takes care of a few more cases that r90163 missed.

llvm-svn: 90502
 2009-12-04 00:16:04 +00:00
Evan Cheng
0f151e89ab - If the reaching definition is an undef and the use is a PHI, add the implicit_def to the end of the source block. 
- When reaching value is replaced with another, update the cache as well.

llvm-svn: 90501
 2009-12-04 00:09:05 +00:00
Devang Patel
2e60d7e71f Insert composite type DIE into the map before processing type fields. This allows fields to find their context DIE from the map. 
llvm-svn: 90498
 2009-12-03 23:46:57 +00:00
Evan Cheng
73dcaa14fa Handle undef values properly. 
llvm-svn: 90489
 2009-12-03 21:51:55 +00:00
Evan Cheng
d350df127e Watch out for PHI instruction with no source operands. 
llvm-svn: 90488
 2009-12-03 21:50:58 +00:00
Duncan Sands
606510ae1b Fix ExpandShiftWithUnknownAmountBit, which was completely bogus. 
Pointed out by Javier Martinez (who also provided a patch).  Since
this logic is not used on (for example) x86, I guess nobody noticed.
Tested by generating SHL, SRL, SRA on various choices of i64 for all
possible shift amounts, and comparing with gcc.  Since I did this on
x86-32, I had to force the use of ExpandShiftWithUnknownAmountBit.
What I'm saying here is that I don't have a testcase I can add to the
repository.

llvm-svn: 90482
 2009-12-03 21:37:32 +00:00
Jakob Stoklund Olesen
a78cbb2848 Clean up some loop logic. 
llvm-svn: 90481
 2009-12-03 20:49:10 +00:00
Devang Patel
fe7cf074f0 Add support to emit debug info for virtual functions and virtual base classes. 
llvm-svn: 90474
 2009-12-03 19:11:07 +00:00
Evan Cheng
d4f8c9fee2 Teach tail duplication to update SSA form. Work in progress. 
llvm-svn: 90432
 2009-12-03 08:43:53 +00:00
Nate Begeman
3a9c51f256 Don't pull vector sext through both hands of a logical operation, since doing so prevents the fusion of vector sext and setcc into vsetcc. 
Add a testcase for the above transformation.
Fix a bogus use of APInt noticed while tracking this down.

llvm-svn: 90423
 2009-12-03 07:11:29 +00:00
Jakob Stoklund Olesen
c4ee94503f Don't call getValueType() on a null SDValue 
llvm-svn: 90415
 2009-12-03 05:15:35 +00:00
Evan Cheng
1c3edb4fa8 Fill out codegen SSA updater. It's not yet tested. 
llvm-svn: 90395
 2009-12-03 02:31:43 +00:00
Jakob Stoklund Olesen
6772f75d4d Don't hang on to pointers or references after vector::push_back. 
The MO reference to a MachineOperand can be invalidated by
MachineInstr::addOperand. Don't even use it for debugging.

llvm-svn: 90381
 2009-12-03 01:49:56 +00:00
Devang Patel
45a72a7032 Emit method definition DIE at module level (even for methods with inlined functino body at soure level) so that the debugger can invoke it. This fixes many test failures in gdb test suite. 
llvm-svn: 90375
 2009-12-03 01:25:38 +00:00