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193 Commits

Author SHA1 Message Date
Eric Christopher
e0501e866c Formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174664 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-07 21:19:56 +00:00
Manman Ren
43213cf1ac Dwarf: support for LTO where a single object file can have multiple line tables 
We generate one line table for each compilation unit in the object file.
Reviewed by Eric and Kevin.

rdar://problem/13067005


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174445 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-02-05 21:52:47 +00:00
Eli Bendersky
9dd2a3b1f2 Initial patch for x32 ABI support. 
Add the x32 environment kind to the triple, and separate the concept of
pointer size and callee save stack slot size, since they're not equal
on x32.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173175 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-22 18:02:49 +00:00
Kevin Enderby
75c9b9384f We want the dwarf AT_producer for assembly source files to match clang's 
AT_producer.  Which includes clang's version information so we can tell
which version of the compiler was used.

This is the first of two steps to allow us to do that.  This is the llvm-mc
change to provide a method to set the AT_producer string.  The second step,
coming soon to a clang near you, will have the clang driver pass the value
of getClangFullVersion() via an flag when invoking the integrated assembler
on assembly source files.

rdar://12955296


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172630 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-16 17:46:23 +00:00
Eric Christopher
68ca56285f These functions have default arguments of 0 for the last arg. Use 
them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171933 91177308-0d34-0410-b5e6-96231b3b80d8
 2013-01-09 01:57:54 +00:00
Chandler Carruth
6c31d31357 Prepare LLVM to fix PR14625, exposing a hook in MCContext to manage the 
compilation directory.

This defaults to the current working directory, just as it always has,
but now an assembler can choose to override it with a custom directory.
I've taught llvm-mc about this option and added a test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170371 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-12-17 21:32:42 +00:00
Chandler Carruth
d04a8d4b33 Use the new script to sort the includes of every file under lib. 
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-12-03 16:50:05 +00:00
Rafael Espindola
f4f14f68f6 Add support for .cfi_register now that it is easy to extent the representation 
to support it. Original patch with the parsing and plumbing by the PaX team and
Roman Divacky. I added the bits in MCDwarf.cpp and the test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168565 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-25 15:14:49 +00:00
Rafael Espindola
ff233c9e5c Change the representation of MCCFIInstruction. 
We now store the Register and Offset directly. MachineLocation is gone (from
this file)!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168536 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-24 04:33:48 +00:00
Rafael Espindola
7f74d2c2c1 Give each MCCFIInstruction its own opcode. 
This untangles the switch cases of the old Move and RelMove opcodes a bit
and makes it clear how to add new instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168534 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-24 03:10:54 +00:00
Rafael Espindola
28c9ea3c13 Refactor how MCCFIInstructions are created. 
Give MCCFIInstruction a single, private constructor and add helper static
methods that create each type of cfi instruction. This is is preparation
for changing its representation. The representation with a pair
MachineLocations older than MC and has been abused quiet a bit to support
more cfi instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168532 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-24 02:01:08 +00:00
Rafael Espindola
c8fec7e21f Implement .cfi_undefined. Based on a patch from PaX team, updated by 
Roman Divacky. I just added the testcase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168520 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-23 16:59:41 +00:00
Alexey Samsonov
15ab115df5 Emit relocations from .debug_aranges to .debug_info for asm files 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167926 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-11-14 09:55:38 +00:00
Manman Ren
286c4dc355 Release build: guard dump functions with 
"#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)"

No functional change. Update r163344.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163679 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-12 05:06:18 +00:00
Manman Ren
cc77eece74 Release build: guard dump functions with "ifndef NDEBUG" 
No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163344 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-06 19:55:56 +00:00
Nick Lewycky
0c5602de8c When emitting the PC range in an FDE, use the same data encoding for both ends 
of the range. Fixes PR13581!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161739 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-12 08:09:45 +00:00
Jim Grosbach
2d39a0e52d Move [SU]LEB128 encoding to a utility header. 
These functions are very generic. There's no reason for them to
be tied to MCObjectWriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161545 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-08-08 23:56:06 +00:00
Sylvestre Ledru
c8e41c5917 Fix a typo (the the => the) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160621 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-07-23 08:51:15 +00:00
Rafael Espindola
2241e51406 Fix a FIXME: DwarfRequiresRelocationForSectionOffset is the same as 
DwarfUsesRelocationsAcrossSections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158992 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-06-22 13:24:07 +00:00
Jim Grosbach
2684d9e3c7 Tidy up. Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156602 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-11 01:41:30 +00:00
Benjamin Kramer
7484920cf5 Compute hashes directly with hash_combine instead of taking a detour through FoldingSetNodeID. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154495 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-11 14:06:39 +00:00
Rafael Espindola
489d679271 On ELF, create relocations to the abbreviation and line sections when producing 
debug info for assembly files. We were already doing the right thing when
producing debug info for C/C++.

ELF linkers don't know dwarf, so they depend on these relocations to produce
valid dwarf output.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151655 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-28 21:13:05 +00:00
Eric Christopher
3c3cdcc270 Grammar-o. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151418 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-25 01:02:44 +00:00
Craig Topper
858143816d Convert assert(0) to llvm_unreachable 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149967 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-07 05:05:23 +00:00
Rafael Espindola
16d7d437e0 Add support for .cfi_signal_frame. Fixes pr11762. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148733 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-23 21:51:52 +00:00
Benjamin Kramer
eb9fa666f9 Add missing breaks to switch. 
Found by the clang static analyzer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148543 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-20 14:42:37 +00:00
Kevin Enderby
11c2defa91 This is the matching change for the data structure name changes for the 
functional change in r147860 to use DW_TAG_label's instead TAG_subprogram's.
This only changes names and updates comments.  No functional change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147877 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-10 21:12:34 +00:00
Kevin Enderby
38fdb7d9fc Various crash reporting tools have a problem with the dwarf generated for 
assembly source when it generates the TAG_subprogram dwarf debug info for
the labels that have nothing between them as in this bit of assembly source:

% cat ZeroLength.s 
_func1:
_func2:
 nop

One solution would be to not emit the subsequent labels with the same address
and use the next label with a different address or the end of the section for
the AT_high_pc value of the TAG_subprogram.

Turns out in llvm-mc it is not possible in all cases to determine of two
symbols have the same value at the point we put out the TAG_subprogram dwarf
debug info.

So we will have llvm-mc instead of putting out TAG_subprogram's put out
DW_TAG_label's.  And the DW_TAG_label does not have a AT_high_pc value which
avoids the problem.

This commit is only the functional change to make the diffs clear as to what is
really being changed.  The next commit will be to clean up the names of such
things like MCGenDwarfSubprogramEntry to something like MCGenDwarfLabelEntry.

rdar://10666925


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147860 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-01-10 17:52:29 +00:00
Rafael Espindola
ed23bdb65f Implement cfi_restore. Patch by Brian Anderson! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147356 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-29 21:43:03 +00:00
Rafael Espindola
c25680f728 Rename Remember and Restore to RememberState and RestoreState for consistency. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147354 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-29 21:09:08 +00:00
Rafael Espindola
6f0b181bc7 Implement .cfi_escape. Patch by Brian Anderson! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-29 20:24:47 +00:00
Bill Wendling
7a13b72bbb Re-re-enable compact unwind after fixing a failure in SingleSource/Benchmarks/Shootout-C++/except.cpp and friends. It was encoding the stored registers in the wrong order. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146617 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-15 00:14:24 +00:00
Bill Wendling
e08643be3a Disable to review some failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146545 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-14 02:16:54 +00:00
Kevin Enderby
94c2e85bea The second part of support for generating dwarf for assembly source files. This 
generates the dwarf Compile Unit DIE and a dwarf subprogram DIE for each
non-temporary label.

The next part will be to get the clang driver to enable this when assembling
a .s file.  rdar://9275556


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146262 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-09 18:09:40 +00:00
Bill Wendling
054a8be154 Re-enable compact unwind. It seems to work now. <rdar://problem/10441838> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145977 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-12-06 22:18:12 +00:00
Bob Wilson
96b685b4aa Disable generation of compact unwind encodings. <rdar://problem/10441578> 
This still seems to be causing some failures.  It needs more testing before
it gets enabled again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144543 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-14 18:21:07 +00:00
Bob Wilson
900b16b99d Remove FIXME comment that should have been removed with r144351. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144392 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-11 17:34:14 +00:00
Bill Wendling
cf3b89f9a8 Reenable compact unwinding now that <rdar://problem/10430076> is fixed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144351 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-11 01:03:50 +00:00
Bill Wendling
7b809e08b9 Disable compact unwind generation until I can solve the codegen problems. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144346 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-11 00:28:42 +00:00
Benjamin Kramer
2dd423987e Simplify code. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144186 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-09 13:19:15 +00:00
Bill Wendling
a2ff3e2c3c Emit the compact unwind *if* we have a compact unwind encoding. 
*headdesk*


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144138 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-08 22:23:43 +00:00
Benjamin Kramer
70be28a5ad Simplify some uses of utohexstr. 
As a side effect hex is printed lowercase instead of uppercase now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144013 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-07 21:00:59 +00:00
Bill Wendling
d8ab8e9707 As a first step, emit both the compact unwind and CIE/FDEs for a function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139152 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-09-06 18:37:11 +00:00
Evan Cheng
5fbe5e783e Some autoconf tests use module level inline asm to test compiler's handling of 
.cfi_startproc. e.g. libffi:

 $ cat confopt.c 
asm (".cfi_startproc\n\t.cfi_endproc");

int main () { return 0; }

Teach MC / dwarf emission to handle these cfi directives which essentially
create an empty frame.

rdar://10017184


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138504 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-08-24 22:31:37 +00:00
Bill Wendling
1424c3c3e6 Emit the __compact_unwind section first. If there are any frames which weren't 
emitted, emit them next as CIE/FDEs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135807 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-22 21:18:59 +00:00
Evan Cheng
203576aa0c Goodbye TargetAsmInfo. This eliminate last bit of CodeGen and Target in llvm-mc. 
There is still a bit more refactoring left to do in Targets. But we are now very
close to fixing all the layering issues in MC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135611 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-20 19:50:42 +00:00
Evan Cheng
e76a33b956 Add MCObjectFileInfo and sink the MCSections initialization code from 
TargetLoweringObjectFileImpl down to MCObjectFileInfo.

TargetAsmInfo is done to one last method. It's *almost* gone!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135569 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-20 05:58:47 +00:00
Bill Wendling
6c2f7e2398 Micro-opt: Only emit compact unwind if there is a compact unwind encoding to emit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135452 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-19 00:09:25 +00:00
Bill Wendling
e52e3f2c02 Use the CompactUnwindEncoding from the Frame, if it's defined. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135451 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-19 00:06:12 +00:00
Evan Cheng
2d28617de2 Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions for 
better location welcome).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135438 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 22:29:13 +00:00
Evan Cheng
0e6a052331 Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down 
to MCRegisterInfo. Also initialize the mapping at construction time.

This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step
towards fixing the layering violation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135424 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-18 20:57:22 +00:00
Evan Cheng
1be0e271a0 Move some parts of TargetAsmInfo down to MCAsmInfo. This is not the greatest 
solution but it is a small step towards removing the horror that is
TargetAsmInfo.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135237 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-15 02:09:41 +00:00
Bill Wendling
833ce06c8f Remove setting the bit for personality function. It should be set by the linker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135236 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-15 01:42:32 +00:00
Bill Wendling
79a6a48851 Encode that we have a personality function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135227 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-15 00:07:31 +00:00
Bill Wendling
4bb5b03712 * If we have an LSDA, we need to mark it in the encoding. 
* The personality function should be encoded as an absolute pointer to the function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135215 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-14 23:34:45 +00:00
Evan Cheng
672b93a332 Unfortunately several files in MC are badly violating layering rule by using 
TargetAsmInfo, which in turn pulls in TargetRegisterInfo, etc. :-( There are
other cases of violations, but this is probably the worst.

This patch is but one small step towards fixing this. 500 more steps to go. :-(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135131 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-14 05:43:07 +00:00
Bill Wendling
8440fe2166 Don't emit the FDE end label if the last thing emitted was a compact unwind and 
not the FDE


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135020 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-13 00:49:09 +00:00
Bill Wendling
6a6b8c3e96 Add a target hook to encode the compact unwind information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134577 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-07 00:54:13 +00:00
Bill Wendling
2b2dc7c4be Clean up the #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134557 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-06 22:52:32 +00:00
Bill Wendling
c3882164cb Remove tabs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134212 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 23:59:38 +00:00
Bill Wendling
e08d4335ad Improve comment: Show the register the DWARF label is added to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134209 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 23:47:40 +00:00
Bill Wendling
d221cd676b Add one more comment to the FDE verbose asm output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134200 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 22:35:49 +00:00
Bill Wendling
2541c41f3e Add comments to the FDE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134196 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 22:02:20 +00:00
Bill Wendling
efd24ddbff Add more comments to the ASM output for the CIE's "moves". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134194 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 21:45:12 +00:00
Bill Wendling
3c163cfa60 Add comments to the ASM output to help understand the compact unwind and CIE tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134191 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 21:25:51 +00:00
Bill Wendling
9287a6eef3 * Use the proper size to output the range size. 
* Rough in the compact encoding part.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134119 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-30 00:30:52 +00:00
Bill Wendling
4498d39680 Stupid error: If the LSDA and Personality functions aren't there, emit 0 instead 
of the encoding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134117 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 23:53:16 +00:00
Bill Wendling
9056e90320 We don't want to use relocations inside the compact unwind section. Just use the 
symbols instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134115 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-29 23:49:12 +00:00
Bill Wendling
5b46e8e6b8 Use a reference. Don't make a useless copy of the vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133707 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 07:55:41 +00:00
Bill Wendling
a8c9e6a943 Formatting changes. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133706 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 07:44:54 +00:00
Bill Wendling
4c0c446d74 Use the presence of the __compact_unwind section to indicate that a target 
supports compact unwind info instead of having a separate flag indicating this.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133685 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 05:13:28 +00:00
Bill Wendling
e3cd13f0e2 Some skeleton code to emit the compact unwind. If the information is unable to 
be emitted in a compact way, we then default to emitting a CIE and FDE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133676 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 01:06:23 +00:00
Benjamin Kramer
dcf0e0c44b Directly print to a raw_ostream instead of printing to a buffer first. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133352 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-18 14:42:47 +00:00
Jim Grosbach
958b68140e No reason not to allow defining the CFA as a reg w/ offset zero. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131760 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-20 21:50:09 +00:00
Rafael Espindola
9989ef43fa Avoid a gcc warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131161 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 22:28:35 +00:00
Rafael Espindola
e3a0e987f3 On MachO, unlike ELF, there should be no relocation to produce the CIE pointer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131149 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 20:59:42 +00:00
Rafael Espindola
12f197b3bc The EH symbols are only needed in eh_frame, not debug_frame. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131146 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 19:51:53 +00:00
Rafael Espindola
0d450dc659 In a debug_frame the cfi offset is to the start of the debug_frame section! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131129 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 15:20:23 +00:00
Rafael Espindola
40a7dbbeff Add support for producing .deubg_frame sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131121 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 03:54:12 +00:00
Rafael Espindola
774466a8a5 Small cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131120 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 03:26:21 +00:00
Rafael Espindola
9f270dadd4 Remove unused argument. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131118 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-10 03:01:39 +00:00
NAKAMURA Takumi
8a1f2b2bcf Eliminate an unused line to fix a warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131078 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-08 23:19:04 +00:00
Rafael Espindola
4eafe10945 Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with 
the smaller encoding and this cuts 270336 bytes from a release version of
clang and 1246272 bytes from a debug build.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131067 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-08 14:35:21 +00:00
Rafael Espindola
be91117c4d Switch Darwin to the generic CIE/FDE printer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131031 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-06 22:29:04 +00:00
Daniel Dunbar
b47426b4de MCDwarf: Don't save Twine to local variable, this is almost never safe to do 
(and should thus never be done).
 - Should fix a crash on win32.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130793 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-03 21:33:37 +00:00
Rafael Espindola
5426a9ee37 GCC uses a different encoding of pointers in the FDE when using 
-fno-dwarf2-cfi-asm. Implement the same behavior.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130637 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-01 04:49:54 +00:00
Rafael Espindola
debd7e4e8b Simplify the handling of pcrel relocations on ELF. Now we do the right thing 
for all symbol differences and can drop the old EmitPCRelSymbolValue
method.

This also make getExprForFDESymbol on ELF equal to the one on MachO, and it
can be made non-virtual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130634 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-01 03:50:49 +00:00
Rafael Espindola
1f6c87554a Avoid some uses of .uleb128. This is a small speedup and more importantly 
lets this code be used when producing assembly code for old assemblers without
uleb support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130544 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 21:50:57 +00:00
Rafael Espindola
4892dff07e Last bit by bit compatibility patch to MCDwarf.cpp: If a FDE with no LSDA is 
assigned to a CIE that requires one, just output a 0.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130472 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 03:06:29 +00:00
Rafael Espindola
9099813bd5 Add an alternative implementation of CIE and FDE emission that outputs them 
in the same order as the one in CodeGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-29 02:42:28 +00:00
Rafael Espindola
a0057ca13f Add the getExprForFDESymbol method that responsible for computing the 
expressions used in the FDE to refer to symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130437 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:04:39 +00:00
Rafael Espindola
bfa27cc5d7 Add a getExprForPersonalitySymbol method to MCAsmInfo. Use it when 
converting the symbol passed to .cfi_personality into bytes is the file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130400 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 16:09:09 +00:00
Rafael Espindola
8bca4106df Mark the EH symbol global or weak if the corresponding function is. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130397 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 12:50:37 +00:00
Rafael Espindola
235b830328 Add a small temporary hack for producing identical eh_frame sections on OS X. 
This removes one of the main advantages of moving eh_frame to MC, but
makes the transition a lot easier to debug (run md5).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130379 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 04:04:14 +00:00
Rafael Espindola
514cecc72b Produce the EH_frame# symbols if needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130378 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 03:26:11 +00:00
Rafael Espindola
a8cfb87fa2 Forward isFunctionEHFrameSymbolPrivate. If it is false, produce the foo.eh 
symbols.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130375 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 02:46:42 +00:00
Rafael Espindola
9266cc400e Force some values to be absolute and align based on the FDE pointers size. A small 
step towards using .cfi_* on OS X.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130273 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 01:43:49 +00:00
Chandler Carruth
add2944559 Delete the other unused variable in this function. Sorry I missed this 
the first time through.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129969 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 01:29:18 +00:00
Chandler Carruth
32bd250d30 Remove an unused variable from a function. This is a likely cut-paste-o. 
Silences GCC warning.

I wonder why Clang doesn't warn on this...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129968 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 01:21:06 +00:00
Rafael Espindola
abf9af60ad Compute the size of the FDE encoding instead of hard coding it. Update 
X8664_ELFTargetObjectFile::getFDEEncoding to match reality.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129959 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-22 00:08:43 +00:00