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8358 Commits

Author SHA1 Message Date
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
Chris Lattner
9ce833945e improve portability to avoid conflicting with std::next in c++'0x. 
Patch by Howard Hinnant!

llvm-svn: 90365
 2009-12-03 00:50:42 +00:00
Douglas Gregor
7416e5586f Fix CMake makefiles 
llvm-svn: 90354
 2009-12-02 22:19:31 +00:00
Evan Cheng
e573096db2 Skeleton for MachineInstr level SSA updater. 
llvm-svn: 90353
 2009-12-02 22:02:52 +00:00
Jim Grosbach
230025f501 Add MaxStackAlignment.cpp to CMake 
llvm-svn: 90337
 2009-12-02 19:31:07 +00:00
Jim Grosbach
0e1230b23b Factor the stack alignment calculations out into a target independent pass. 
No functionality change.

llvm-svn: 90336
 2009-12-02 19:30:24 +00:00
Bob Wilson
adb1889175 Don't count PHI instructions toward the limit for tail duplicating a block. 
llvm-svn: 90326
 2009-12-02 17:15:24 +00:00
Devang Patel
6f4a280987 Clarify that DIEString does not keep a copy of the string. 
llvm-svn: 90318
 2009-12-02 15:25:16 +00:00
Devang Patel
190698f233 Reuse existing subprogram DIE. 
llvm-svn: 90281
 2009-12-01 23:07:59 +00:00
Evan Cheng
0c687845b1 Fix PR5391: support early clobber physical register def tied with a use (ewwww) 
- A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber.
- If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range.
- Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature".

llvm-svn: 90269
 2009-12-01 22:25:00 +00:00
Dan Gohman
3f4d608e3c Add edge source labels to SelectionDAG graphs, now that the graph printing 
framework omits differentiated edge sources in the case where the labels
are empty strings.

llvm-svn: 90254
 2009-12-01 19:20:00 +00:00
Dan Gohman
78e1e2806c Minor cleanups. 
llvm-svn: 90253
 2009-12-01 19:16:15 +00:00
Dan Gohman
58675165bb Trim an unnecessary #include. 
llvm-svn: 90252
 2009-12-01 19:13:27 +00:00
Devang Patel
45858cdfe6 Clear function specific containers while processing end of a function, even if DW_TAG_subprogram for current function is not found. 
llvm-svn: 90247
 2009-12-01 18:13:48 +00:00
Jakob Stoklund Olesen
2b50f038b1 Move PHIElimination::isLiveOut method to LiveVariables. 
We want LiveVariables clients to use methods rather than accessing the
getVarInfo data structure directly. That way it will be possible to change the
LiveVariables representation.

llvm-svn: 90240
 2009-12-01 17:13:31 +00:00