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Commit Graph

768 Commits

Author SHA1 Message Date
Devang Patel
8fffee565c Constructors and operators for anonymous aggregates does not names. Do not force empty AT_name attribute in such cases.
llvm-svn: 97533
2010-03-02 01:26:20 +00:00
Bill Wendling
7b47904f6e A much cleaner (and less code!) way of inserting the correct amount of padding
for alignment into the LSDA. If the TType base offset is emitted, then put the
padding there. Otherwise, put it in the call site table length. There will be no
conflict between the two sites when placing the padding in one place.

llvm-svn: 97277
2010-02-26 22:17:52 +00:00
Bill Wendling
6928ef4c23 Comment typo.
llvm-svn: 97269
2010-02-26 21:31:01 +00:00
Bill Wendling
720095c22c Fix comments.
llvm-svn: 97200
2010-02-26 01:12:52 +00:00
Bill Wendling
173d797171 Add another (and hopefully the last) exception case, where once we recalculate
the alignment requirement, if it no longer makes the TType base offset overflow
into extra bytes, then we need to pad to those bytes ourselves.

llvm-svn: 97196
2010-02-26 00:43:54 +00:00
Bill Wendling
6c6c5e70e3 And should use the correct variable.
llvm-svn: 97193
2010-02-26 00:24:25 +00:00
Bill Wendling
30d82f42c4 Got assertion check backwards.
llvm-svn: 97192
2010-02-26 00:22:42 +00:00
Bill Wendling
788d3707a8 Catch a corner case where adding the padding to the "TType base offset" field
will eliminate the need for padding in the "Call site table length". E.g., if
we have this:

    GCC_except_table1:
    Lexception1:
        .byte   0xff  ## @LPStart Encoding = omit
        .byte   0x9b  ## @TType Encoding = indirect pcrel sdata4
        .byte   0x7f  ## @TType base offset
        .byte   0x03  ## Call site Encoding = udata4
        .byte   0x89  ## Call site table length

with padding of 1. We want to emit the padding like this:
 
    GCC_except_table1:
    Lexception1:
        .byte   0xff  ## @LPStart Encoding = omit
        .byte   0x9b  ## @TType Encoding = indirect pcrel sdata4
        .byte   0xff  ## @TType base offset
        .space  1,0   ## Padding
        .byte   0x03  ## Call site Encoding = udata4
        .byte   0x89  ## Call site table length

and not with padding on the "Call site table length" entry.

llvm-svn: 97183
2010-02-25 23:52:44 +00:00
Bill Wendling
dd2bd801a2 Make comment more meaningful.
llvm-svn: 97169
2010-02-25 21:19:47 +00:00
Bill Wendling
1be1ea831e MC'ize padding when padding the ULEB128 value.
llvm-svn: 97087
2010-02-25 00:24:52 +00:00
Bill Wendling
e22e8b7621 LLVM puts padding bytes in the __gcc_except_tab section after the
GCC_except_table label but before the Lexception, which the FDE references.
This causes problems as the FDE does not point to the start of an LSDA chunk.

Use an unnormalized uleb128 for the call-site table length that includes the
padding.

llvm-svn: 97078
2010-02-24 23:34:35 +00:00
Chris Lattner
45a2c36ddc use OutStreamer.EmitCodeAlignment for alignment in the text
segment.

llvm-svn: 96967
2010-02-23 18:46:22 +00:00
Chris Lattner
2ec1f1a54a move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter,
and add a sparc implementation that knows about delay slots.  Patch by
Nathan Keynes!

llvm-svn: 96492
2010-02-17 18:52:56 +00:00
Devang Patel
0f421b8fc5 Before setting scope end marker, pay attention to scope begin marker and existing scope end marker, if any. Scope must begin before it ends and nested inlined scope do not truncate surrounding scope.
llvm-svn: 96445
2010-02-17 02:20:34 +00:00
Anton Korobeynikov
26310a84b1 Use ttype encoding consistently
llvm-svn: 96290
2010-02-15 22:38:25 +00:00
Anton Korobeynikov
559e34c5fc It turns out that we emitted completely wrong common EH frame since the early beginning! The "z" CIE augmentation mark indicates that there is an extra word containing the size of augmentation section. However, even for frames w/o any augmentation data we emitted size uleb! (this is the case of "unwinding through C code"). Thus frame moves information was emitterd completely wrong.
llvm-svn: 96287
2010-02-15 22:36:41 +00:00
Anton Korobeynikov
dccd240998 Preliminary patch to improve dwarf EH generation - Hooks to return Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there
llvm-svn: 96285
2010-02-15 22:35:59 +00:00
Bill Wendling
6e7cc490d4 Use .empty() instead of .size().
llvm-svn: 95871
2010-02-11 10:37:57 +00:00
Bill Wendling
2aa666c419 Fix to get it to compile.
llvm-svn: 95840
2010-02-11 01:15:27 +00:00
Bill Wendling
123c791ff5 Don't print out a default newline when emitting the section offset. There are
almost always comments afterwards that need printing.

llvm-svn: 95839
2010-02-11 01:13:02 +00:00
Bill Wendling
b288ec36ae Use an index instead of pointers into the vector. If the vector resizes, then
the pointer values could be invalid.

llvm-svn: 95813
2010-02-10 21:41:57 +00:00
Dan Gohman
92b6122204 Fix "the the" and similar typos.
llvm-svn: 95781
2010-02-10 16:03:48 +00:00
Chris Lattner
72156036b9 fix a layering violation: VirtRegRewriter.cpp shouldn't use AsmPrinter.h.
llvm-svn: 95748
2010-02-10 01:23:18 +00:00
Bill Wendling
270a5c4426 Improve comments a even more.
llvm-svn: 95740
2010-02-10 00:59:47 +00:00
Chris Lattner
db4b4d819d Move verbose asm instruction comments to using MCStreamer.
The major win of this is that the code is simpler and they 
print on the same line as the instruction again:

        movl    %eax, 96(%esp)          ## 4-byte Spill
        movl    96(%esp), %eax          ## 4-byte Reload
        cmpl    92(%esp), %eax          ## 4-byte Folded Reload
        jl      LBB7_86

llvm-svn: 95738
2010-02-10 00:47:53 +00:00
Bill Wendling
076bf7e91c Improve comments a bit more.
llvm-svn: 95737
2010-02-10 00:45:28 +00:00
Chris Lattner
6d7856867a print all the newlines at the end of instructions with
OutStreamer.AddBlankLine instead of textually.

llvm-svn: 95734
2010-02-10 00:36:00 +00:00
Bill Wendling
fe743bc4d0 Improve comments in the LSDA somewhat. They can be improved much more.
llvm-svn: 95707
2010-02-09 22:49:16 +00:00
Chris Lattner
7acf9be6c4 move target-independent opcodes out of TargetInstrInfo
into TargetOpcodes.h.  #include the new TargetOpcodes.h
into MachineInstr.  Add new inline accessors (like isPHI())
to MachineInstr, and start using them throughout the 
codebase.

llvm-svn: 95687
2010-02-09 19:54:29 +00:00
Devang Patel
d381c20ee7 Add declaration attribute to a variable DIE, if there is a separate DIE for the definition.
llvm-svn: 95646
2010-02-09 01:58:33 +00:00
Dan Gohman
d19999d757 Implement AsmPrinter support for several more operators which have
direct MCExpr equivalents. Don't use MCExpr::Shr because it isn't
consistent between targets.

llvm-svn: 95620
2010-02-09 00:02:37 +00:00
Chris Lattner
32fa6adff6 now that @GOTOFF is no longer represented as a suffix on a
MCSymbol, we can remove the 'suffix' argument of 
GetBlockAddressSymbol.  Do so.

llvm-svn: 95601
2010-02-08 23:10:08 +00:00
Dan Gohman
8b46c6a6cb ConstantFoldConstantExpression can theoretically return the original
expression; don't go into an infinite loop if it does.

llvm-svn: 95591
2010-02-08 22:19:11 +00:00
Dan Gohman
56b9ea088b When CodeGen'ing unoptimized code, there may be unfolded constant expressions
in global initializers. Instead of aborting, attempt to fold them on the
spot. If folding succeeds, emit the folded expression instead.

This fixes PR6255.

llvm-svn: 95583
2010-02-08 22:02:38 +00:00
Duncan Sands
ea225349b0 Give DwarfPrinter a protected (but not virtual) destructor. Cppcheck
warns about this base class not having a virtual destructor, but since
this class has no virtual methods and neither it or the types derived
from it has a destructor, a protected trivial destructor will do (and
shuts cppcheck up) the trick without the cost of introducing a vtable.

llvm-svn: 95526
2010-02-07 21:09:22 +00:00
Devang Patel
102b8a3103 Set DW_AT_artificial only if argument is marked as artificial.
llvm-svn: 95461
2010-02-06 01:02:37 +00:00
Devang Patel
9eb9bb03c9 Do not generate specification DIE for nested functions.
llvm-svn: 95452
2010-02-05 23:09:20 +00:00
Bill Wendling
9761f067f8 An empty global constant (one of size 0) may have a section immediately
following it. However, the EmitGlobalConstant method wasn't emitting a body for
the constant. The assembler doesn't like that. Before, we were generating this:

  .zerofill __DATA, __common, __cmd, 1, 3

This fix puts us back to that semantic.

llvm-svn: 95336
2010-02-05 00:17:02 +00:00
Devang Patel
32eb7508e4 Emit appropriate expression to find virtual base offset.
llvm-svn: 95242
2010-02-03 20:08:48 +00:00
Devang Patel
83d905f82b Provide interface to identifiy artificial methods.
llvm-svn: 95240
2010-02-03 19:57:19 +00:00
Chris Lattner
eb6d6da2e4 don't emit \n's at the start of X86AsmPrinter::runOnMachineFunction,
.o files don't like that.

llvm-svn: 95187
2010-02-03 01:49:49 +00:00
Chris Lattner
a64be6d665 privatize a bunch of methods and move \n printing into them.
llvm-svn: 95186
2010-02-03 01:46:05 +00:00
Chris Lattner
edf1e280a2 rejigger the world so that EmitInstruction prints the \n at
the end of the instruction instead of expecting the caller to
do it.  This currently causes the asm-verbose instruction 
comments to be on the next line.

llvm-svn: 95178
2010-02-03 01:09:55 +00:00
Chris Lattner
cd07a3a0b7 sink handling of target-independent machine instrs (other
than DEBUG_VALUE :(  ) into the target indep AsmPrinter.cpp
file.   This allows elimination of the 
NO_ASM_WRITER_BOILERPLATE hack among other things.

llvm-svn: 95177
2010-02-03 01:00:52 +00:00
Chris Lattner
643f2f9bc4 refactor code so that LLVMTargetMachine creates the asmstreamer and
mccontext instead of having AsmPrinter do it.  This allows other 
types of MCStreamer's to be passed in.

llvm-svn: 95155
2010-02-02 23:37:42 +00:00
Chris Lattner
501138c6ad move handling of asm-verbose out of AsmPrinter.cpp into LLVMTargetMachine.cpp with the rest of the command line options.
llvm-svn: 95152
2010-02-02 22:54:51 +00:00
Devang Patel
59e8b027b8 Apparently gdb is not amused by empty lines in pubtypes section.
llvm-svn: 95064
2010-02-02 03:47:27 +00:00
Devang Patel
38cf687622 NULL terminate name in pubtypes sections.
llvm-svn: 95062
2010-02-02 03:37:03 +00:00
Devang Patel
70713c75da Emit declaration DIE for the class static variables.
llvm-svn: 94870
2010-01-30 01:08:30 +00:00
Devang Patel
022d4a7fc0 Add size and location info in DW_TAG_class_type descriptor.
llvm-svn: 94822
2010-01-29 18:34:58 +00:00