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24929 Commits

Author SHA1 Message Date
Dan Gohman
4db93c9700 Reorder some code in SelectionDAGBuilder. 
llvm-svn: 105105
 2010-05-29 17:53:24 +00:00
Dan Gohman
d16aa541af SelectionDAG shouldn't have a FunctionLoweringInfo member. RegsForValue 
shouldn't have a TargetLoweringInfo member. And FunctionLoweringInfo::set
doesn't needs its EnableFastISel argument.

llvm-svn: 105101
 2010-05-29 17:03:36 +00:00
Benjamin Kramer
c488e92f0b Remove unused function. 
llvm-svn: 105100
 2010-05-29 14:03:51 +00:00
Evan Cheng
707b7cc429 Remove schedule-livein-copies. It's not being used. 
llvm-svn: 105095
 2010-05-29 02:23:39 +00:00
Jakob Stoklund Olesen
ab6223949e Handle composed subreg indices when processing REQ_SEQUENCE instructions. 
llvm-svn: 105066
 2010-05-29 00:14:14 +00:00
Evan Cheng
032f3261a2 Doh. Machine LICM is re-initializing the CSE map over and over. Patch by Anna Zaks. rdar://8037934. 
llvm-svn: 105065
 2010-05-29 00:06:36 +00:00
Evan Cheng
cc2efe11db Fix some latency computation bugs: if the use is not a machine opcode do not just return zero. 
llvm-svn: 105061
 2010-05-28 23:26:21 +00:00
Jakob Stoklund Olesen
64824ea99f Add a TargetRegisterInfo::composeSubRegIndices hook with a default 
implementation that is correct for most targets. Tablegen will override where
needed.

Add MachineOperand::subst{Virt,Phys}Reg methods that correctly handle existing
subreg indices when sustituting registers.

llvm-svn: 104985
 2010-05-28 18:18:53 +00:00
Stuart Hastings
c1e216583f Revert 104841, 104842, 104876 due to buildbot failures. Radar 7424645. 
llvm-svn: 104953
 2010-05-28 16:41:07 +00:00
Dan Gohman
2140a74979 Eliminate the restriction that the array size in an alloca must be i32. 
This will help reduce the amount of casting required on 64-bit targets.

llvm-svn: 104911
 2010-05-28 01:14:11 +00:00
Jakob Stoklund Olesen
b613ae2c89 Add a -regalloc=default option that chooses a register allocator based on the -O 
optimization level.

This only really affects llc for now because both the llvm-gcc and clang front
ends override the default register allocator. I intend to remove that code later.

llvm-svn: 104904
 2010-05-27 23:57:25 +00:00
Jim Grosbach
faa3abbe39 Update the saved stack pointer in the sjlj function context following either 
an alloca() or an llvm.stackrestore(). rdar://8031573

llvm-svn: 104900
 2010-05-27 23:49:24 +00:00
Jim Grosbach
c9f532dddc back out 104862/104869. Can reuse stacksave after all. Very cool. 
llvm-svn: 104897
 2010-05-27 23:11:57 +00:00
Devang Patel
7a9dedf0ab Do not drop location info for inlined function args. 
llvm-svn: 104884
 2010-05-27 20:25:04 +00:00
Jim Grosbach
b68dfb45f5 hook ISD::STACKADDR to an intrinsic 
llvm-svn: 104869
 2010-05-27 18:52:11 +00:00
Devang Patel
5e6b71ce34 inlined function's arguments need a label to mark the start point because they are not directly attached to current function. 
llvm-svn: 104848
 2010-05-27 16:47:30 +00:00
Stuart Hastings
8e99e50d08 Support for nested functions/classes in debug output. Radar 7424645. 
llvm-svn: 104841
 2010-05-27 16:16:54 +00:00
Devang Patel
6b9a9fe207 Simplify. Eliminate unneeded debug_loc entry. 
llvm-svn: 104785
 2010-05-26 23:55:23 +00:00
Bill Wendling
ddee3cb163 Add FIXME comment to remove this. 
llvm-svn: 104749
 2010-05-26 21:53:50 +00:00
Daniel Dunbar
b33dfbcba4 MC: Add TargetMachine support for setting the value of MCRelaxAll with 
-filetype=obj.

llvm-svn: 104747
 2010-05-26 21:48:55 +00:00
Devang Patel
acc32a5c19 There is no need to force an line number entry (using previous location) for a temp label at unknown location. 
llvm-svn: 104740
 2010-05-26 21:23:46 +00:00
Bill Wendling
27311269cb Add "setjmp_syscall", "savectx", "qsetjmp", "vfork", "getcontext" to the list of 
usual suspects that could "return twice".

llvm-svn: 104737
 2010-05-26 20:39:00 +00:00
Jim Grosbach
c98892fdaa Adjust eh.sjlj.setjmp to properly have a chain and to have an opcode entry in 
ISD::. No functional change.

llvm-svn: 104734
 2010-05-26 20:22:18 +00:00
Devang Patel
1b08572a66 Update debug info when live-in reg is copied into a vreg. 
llvm-svn: 104732
 2010-05-26 20:18:50 +00:00
Bill Wendling
0c3bfd3fb0 Move the check for "calls setjmp" to SelectionDAGISel so that it can be used by 
more than just the stack slot coloring algorithm.

llvm-svn: 104722
 2010-05-26 19:46:12 +00:00
Devang Patel
002d54ddc9 Identify instructions, that needs a label to mark debug info entity, in advance. This simplifies beginScope(). 
llvm-svn: 104720
 2010-05-26 19:37:24 +00:00
Dan Gohman
52c2738324 Eliminate the use of PriorityQueue and just use a std::vector, 
implementing pop with a linear search for a "best" element. The priority
queue was a neat idea, but in practice the comparison functions depend
on dynamic information.

llvm-svn: 104718
 2010-05-26 18:52:00 +00:00
Dan Gohman
1e5d0b0456 Delete an unused function. 
llvm-svn: 104716
 2010-05-26 18:34:12 +00:00
Devang Patel
95fcc96752 Remove dead code. 
llvm-svn: 104706
 2010-05-26 17:42:50 +00:00
Devang Patel
5a5e0bc3b5 Do not construct location list backword! 
llvm-svn: 104705
 2010-05-26 17:29:32 +00:00
Eric Christopher
e805ea9e39 Temporarily revert r104655 as it's breaking the bots. 
llvm-svn: 104664
 2010-05-26 01:59:55 +00:00
Dan Gohman
7c00576a62 Change push_all to a non-virtual function and implement it in the 
base class, since all the implementations are the same.

llvm-svn: 104659
 2010-05-26 01:10:55 +00:00
Dan Gohman
3701b3928e Trim #include. 
llvm-svn: 104657
 2010-05-26 00:55:59 +00:00
Bill Wendling
c5222d6c38 Dale and Evan suggested putting the "check for setjmp" much earlier in the 
machine code generation. That's a good idea, so I made it so.

llvm-svn: 104655
 2010-05-26 00:32:40 +00:00
Devang Patel
9fc11706e3 First cut at supporting .debug_loc section. 
This is used to track variable information.

llvm-svn: 104649
 2010-05-25 23:40:22 +00:00
Bill Wendling
388f638511 Constify function. 
llvm-svn: 104646
 2010-05-25 22:02:22 +00:00
Dan Gohman
ce3269b815 Do one map lookup instead of two. 
llvm-svn: 104645
 2010-05-25 21:59:42 +00:00
Eric Christopher
f3925438e5 Move the verbose asm output up a bit so it can be used in the special cases 
as well.

llvm-svn: 104642
 2010-05-25 21:49:43 +00:00
Bill Wendling
b04ef0cfbc Okay, bear with me here... 
If you have a setjmp/longjmp situation, it's possible for stack slot coloring to
reuse a stack slot before it's really dead. For instance, if we have something
like this:

1:  y = g;
    x = sigsetjmp(env, 0);
    switch (x) {
    case 1:
      /* ... */
      goto run;  
    case 0:
  run:
      do_run(); /* marked as "no return" */
      break;
    case 3:
      if (...) {
        /* ... */
        goto run;
      }
      /* ... */
      break;
    }

2:  g = y;

"y" may be put onto the stack, so the expression "g = y" is relying upon the
fact that the stack slot containing "y" isn't modified between (1) and (2). But
it can be, because of the "no return" calls in there. A longjmp might come back
with 3, modify the stack slot, and then go to case 0. And it's perfectly
acceptable to reuse the stack slot there because there's no CFG flow from case 3
to (2).

The fix is to disable certain optimizations in these situations. Ideally, we'd
disable them for all "returns twice" functions. But we don't support that
attribute. Check for "setjmp" and "sigsetjmp" instead.

llvm-svn: 104640
 2010-05-25 21:44:26 +00:00
Eric Christopher
19a4b843cc Add support for initialized global data for darwin tls. Update comments 
and testcases accordingly.

llvm-svn: 104635
 2010-05-25 21:28:50 +00:00
Jakob Stoklund Olesen
1ad0d5e25b Print symbolic SubRegIndex names on machine operands. 
llvm-svn: 104628
 2010-05-25 19:49:38 +00:00
Dale Johannesen
60fe2cdc4f Fix another variant of PR 7191. Also add a testcase 
Mon Ping provided; unfortunately bugpoint failed to
reduce it, but I think it's important to have a test for
this in the suite.  8023512.

llvm-svn: 104624
 2010-05-25 18:47:23 +00:00
Dale Johannesen
ff384ad981 Fix PR 7191. I have been unable to create a .ll file that fails, sorry. 
(oye, a word which should be better known to people writing tree
traversals, means grandchild.)

llvm-svn: 104619
 2010-05-25 17:50:03 +00:00
Jakob Stoklund Olesen
adff18518a Disable invalid coalescer assertion. 
llvm-svn: 104574
 2010-05-25 00:15:18 +00:00
Bill Wendling
0b7488e8d5 Print out the name of the function during SSC. 
llvm-svn: 104572
 2010-05-24 23:16:04 +00:00
Evan Cheng
1b79babdec Avoid adding duplicate function live-in's. 
llvm-svn: 104560
 2010-05-24 21:33:37 +00:00
Devang Patel
51b37e0bd8 Do not emit line number entries for unknown debug values. 
This fixes recent regression in store.exp from gdb testsuite.

llvm-svn: 104524
 2010-05-24 18:26:49 +00:00
Nicolas Geoffray
c5327226e4 Encode the Caml frametable by following what the comment says: the number of descriptors 
is first emitted, and StackOffsets are emitted in 16 bits.

llvm-svn: 104488
 2010-05-24 12:24:11 +00:00
Daniel Dunbar
3ff1a06de6 MC: Add an MCLoggingStreamer, for use in debugging integrated-as mismatches. 
llvm-svn: 104463
 2010-05-23 17:44:06 +00:00
Evan Cheng
168ced94d8 Implement @llvm.returnaddress. rdar://8015977. 
llvm-svn: 104421
 2010-05-22 01:47:14 +00:00