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153 Commits

Author SHA1 Message Date
Daniel Dunbar
a6c329d66b MC: Give a (lame) hard error if a .org directive would create an unreasonably 
large object file (> 1GB).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113494 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-09 16:23:33 +00:00
Daniel Dunbar
c983b20661 MC/ELF: Allow null values in virtual sections, ELF doesn't use special 
directives for putting contents in .bss, for example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111376 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-18 18:22:37 +00:00
Matt Fleming
a8bf473fb1 Layout helper function. 
Introduce a helper method to add a section to the end of a layout. This
will be used by the ELF ObjectWriter code to add the metadata sections
(symbol table, etc) to the end of an object file.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111171 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 18:35:06 +00:00
Matt Fleming
6c8b3d2f1f Record a symbol's size which is needed for ELF symbol tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111170 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-08-16 18:34:31 +00:00
Daniel Dunbar
0ecdb6f3d8 MC: Initialize MCFragment::Offset, noticed by Cameron Esfahani. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109875 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-30 18:32:09 +00:00
Daniel Dunbar
36880e704f MC: Put back the MCFragment vtable, so subclasses are destroyed properly (duh). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109649 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-28 20:28:45 +00:00
Reid Kleckner
c96a82a534 Initial modifications to MCAssembler and TargetMachine for the MCJIT. 
Patch by Olivier Meurant!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109080 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-07-22 05:58:53 +00:00
Duncan Sands
6f74f69ff4 The variable ValueSize is set to 1 on both code paths, and then 
ignored!  Remove it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107138 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-29 13:30:08 +00:00
Daniel Dunbar
843aa1f15b MC: Simplify MCAssembler::isSymbolLinkerVisible to only take an MCSymbol. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106142 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-16 20:04:29 +00:00
Dan Gohman
4b1000d117 Don't call flush() at a library level which isn't checking for errors 
and doesn't know where the output is going.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105274 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 16:31:34 +00:00
Daniel Dunbar
83194de76a MC: When running with -mc-relax-all, we can eagerly relax instructions and avoid creating unnecessary MCInstFragments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104736 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 20:37:03 +00:00
Daniel Dunbar
95506d40c5 MC: Change RelaxInstruction to only take the input and output instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104713 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 18:15:06 +00:00
Daniel Dunbar
8488252855 MC: Simplify MayNeedRelaxation to not provide the fixups, so we can query it 
before encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104707 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 17:45:29 +00:00
Daniel Dunbar
c90e30aa6f MC: Eliminate MCAsmFixup, replace with MCFixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104699 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 15:18:56 +00:00
Daniel Dunbar
482ad802f1 MC: Use accessors for access to MCAsmFixup. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104697 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 15:18:31 +00:00
Daniel Dunbar
e614e393c7 MC: Eliminate MCFragment vtable, which was unnecessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104689 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-26 06:50:57 +00:00
Daniel Dunbar
47b3ec4daa MC: Switch to completely lazy layout. 
- The eliminates the last major algorithmic problem with MC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103754 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:51:14 +00:00
Daniel Dunbar
9005d45a99 MC: Extend MCAsmLayout to explicitly track which fragments have been layed out, and enforce several invariants to LayoutFragment to ensure we only do layout in a sensible order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103753 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:37:21 +00:00
Daniel Dunbar
11c4111516 MC: Implicitly assign section addresses when the previous fragment is layed out. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:37:17 +00:00
Daniel Dunbar
337718e09c MC: Switch MCFragment to storing the layout order index, not its index in the file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103751 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:37:14 +00:00
Daniel Dunbar
afc6acdab7 MC: Change LayoutSection() to only do the section initializiation. 
Also, elimminate MCAsmLayout::set*, which are no longer needed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103750 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-14 00:37:11 +00:00
Daniel Dunbar
b69fc044db MC: Move Layout{Fragment,Section} into MCAsmLayout, and add LayoutFile(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103738 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 20:40:12 +00:00
Daniel Dunbar
2c18d3b0fe MC: Factor out MCAssembler::ComputeFragmentSize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103724 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 18:35:06 +00:00
Daniel Dunbar
f60c736c64 MC: Add section layout order indices to MCSectionData. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103715 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 15:17:26 +00:00
Daniel Dunbar
49ed921190 MC: Move ordinal calculation, to make sure fragments synthesized for layout get assigned ordinals properly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103711 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 08:43:37 +00:00
Daniel Dunbar
09d3465f0e MC: Create dummy fragments to avoid ever having empty sections, which simplifies layout. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103710 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 08:43:34 +00:00
Daniel Dunbar
aa0d350fe5 MC: Add MCAsmLayout::FragmentReplaced() helper function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 08:43:31 +00:00
Daniel Dunbar
054be92e1d Fix -Asserts warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103697 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 03:50:50 +00:00
Daniel Dunbar
2661f11e46 MC: Eliminate MCSectionData::{,Address,File}Size, which can now be computed by 
utility functions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103695 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 03:19:50 +00:00
Daniel Dunbar
61066dbdf2 MC: Switch to using explicit MCAlignFragments with OnlyAlignAddress bit instead 
of manually doing padding/editing layout in LayoutSection().
    - This probably seems like six-of-one and half-dozen of another, but there
      is a method to my madness.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103693 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 02:34:14 +00:00
Daniel Dunbar
456b501270 MC: Add MCAlignFragment::OnlyAlignAddress bit. This is a bit of magic that says the align fragment shouldn't contribute to the logical section size, it is will be used for cleaning up the code to handle section alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103690 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 01:10:26 +00:00
Daniel Dunbar
b5844ff1c4 MC: Add MCSectionData::AddressSize, which is the size of the address space consumed by the section. This can differ from both the section logical size, and the section size on disk (although the current code handles this without making an explicit distinction). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103689 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-13 01:10:22 +00:00
Daniel Dunbar
1c15413ebc MC: Move MCAlignFragment::EmitNops value out of the constructor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103665 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 22:56:23 +00:00
Daniel Dunbar
4e544870c4 MC: Eliminate MCZeroFillFragment, it is no longer needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103664 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 22:51:38 +00:00
Daniel Dunbar
e2fee5b236 MC: Explicitly check that only virtual fragments appear in virtual sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103663 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 22:51:35 +00:00
Daniel Dunbar
3153fec733 MC: Switch MCFillFragment to storing total fill size instead of a count. This allows using ValueSize==0 to represent a virtual fill. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103662 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 22:51:32 +00:00
Daniel Dunbar
e73d49eda2 MC: Drop support for alignment in ZeroFill fragment, we can just use 
MCAlignFragments for this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103661 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 22:51:27 +00:00
Daniel Dunbar
52f8dff671 Simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103651 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 21:47:55 +00:00
Daniel Dunbar
f0d17d2461 MC: Factor out MCAssembler::LayoutFragment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103649 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 21:35:25 +00:00
Daniel Dunbar
2d891a20e6 MC: Tweak section layout to not relying on accumulating address value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103648 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 21:35:22 +00:00
Daniel Dunbar
d13a0caf72 MC: Simplify LayoutSection to just take the index of the section to layout. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103627 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 17:56:47 +00:00
Daniel Dunbar
bc1a0cf139 MC: Track section layout order explicitly, and use to simplify. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103616 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 15:42:59 +00:00
Daniel Dunbar
a5f1d57f65 MC/Mach-O/x86_64: Add a new hook for checking whether a particular section can 
be diced into atoms, and adjust getAtom() to take this into account.
 - This fixes relocations to symbols in fixed size literal sections, for
   example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103532 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-12 00:38:17 +00:00
Daniel Dunbar
651804c3d6 MC/Mach-O x86_64: Switch to using fragment atom symbol. 
- This eliminates getAtomForAddress() (which was a linear search) and
   simplifies getAtom().
 - This also fixes some correctness problems where local labels at the same
   address as non-local labels could be assigned to the wrong atom.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103480 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-11 17:22:50 +00:00
Daniel Dunbar
071f73db4a MC/Mach-O: Explicitly track atoms, as represented by their defining symbol, for each fragment (not yet used). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103438 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-10 22:45:09 +00:00
Daniel Dunbar
31e8e1d085 llvm-mc: Fix case were we would skip a line in the .s file after an instruction 
match failure.

Also, fixes a few memory leak FIXMEs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102986 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-05-04 00:33:07 +00:00
Chris Lattner
75361b69f3 rename llvm::llvm_report_error -> llvm::report_fatal_error 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-07 22:58:41 +00:00
Daniel Dunbar
ac2884a717 llvm-mc: Add a -mc-relax-all option, which relaxes every fixup. We always need 
exactly two passes in that case, and don't ever need to recompute any layout,
so this is a nice baseline for relaxation performance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99563 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 22:49:09 +00:00
Daniel Dunbar
0cc8bd4861 MC: Stop restarting layout on every relaxation. 
- Still O(N^2), just a faster form, and now its the MCAsmLayout's fault.

On the .s I am tuning against (combine.s from 403.gcc):
--
ddunbar@lordcrumb:MC$ diff stats-before.txt stats-after.txt
5,10c5,10
<    1728 assembler - Number of assembler layout and relaxation steps
<    7707 assembler - Number of emitted assembler fragments
<  120588 assembler - Number of emitted object file bytes
< 2233448 assembler - Number of evaluated fixups
<    1727 assembler - Number of relaxed instructions
< 6723845 mcexpr    - Number of MCExpr evaluations
---
>      3 assembler - Number of assembler layout and relaxation steps
>   7707 assembler - Number of emitted assembler fragments
> 120588 assembler - Number of emitted object file bytes
>  14796 assembler - Number of evaluated fixups
>   1727 assembler - Number of relaxed instructions
>  67889 mcexpr    - Number of MCExpr evaluations
--
Feel free to LOL at the -before numbers, if you like.

I am a little surprised we make more than 2 relaxation passes. It's pretty
trivial for us to do relaxation out-of-order if that would give a speedup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99543 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 19:35:56 +00:00
Daniel Dunbar
f476b00f51 MC: Simplify main section layout process by moving alignment into LayoutSection. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99529 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-25 18:16:42 +00:00