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Commit Graph

23 Commits

Author SHA1 Message Date
Kevin Enderby
e6ab982310 Fixed a bug in getARMFixupKindMachOInfo() where three ARM fixup kinds
were falling into the cases for 24-bit branch kinds which are not 24-bit
branches.  The routine is to return false for fixups are expected to always
be resolvable at assembly time. Which these three fixups are as they have
limited displacement and are for local references within a function.

rdar://15586725

llvm-svn: 197282
2013-12-13 22:46:54 +00:00
Daniel Dunbar
a496d61c01 [tests] Cleanup initialization of test suffixes.
- Instead of setting the suffixes in a bunch of places, just set one master
   list in the top-level config. We now only modify the suffix list in a few
   suites that have one particular unique suffix (.ml, .mc, .yaml, .td, .py).

 - Aside from removing the need for a bunch of lit.local.cfg files, this enables
   4 tests that were inadvertently being skipped (one in
   Transforms/BranchFolding, a .s file each in DebugInfo/AArch64 and
   CodeGen/PowerPC, and one in CodeGen/SI which is now failing and has been
   XFAILED).

 - This commit also fixes a bunch of config files to use config.root instead of
   older copy-pasted code.

llvm-svn: 188513
2013-08-16 00:37:11 +00:00
David Sehr
f67cd34524 Correct ARM NOP encoding
The encoding of NOP in ARMAsmBackend.cpp is missing a trailing zero, which
causes the emission of a coprocessor instruction rather than "mov r0, r0"
as indicated in the comment.  The test also checks for the wrong encoding.

http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20121203/157919.html

llvm-svn: 169420
2012-12-05 21:01:27 +00:00
David Sehr
fb2c0537ee Test commit.
llvm-svn: 169410
2012-12-05 19:47:56 +00:00
Eli Bendersky
12bb44ebf1 A test in thid directory was not being run because lit.local.cfg didn't
include .ll files. Fix that.

llvm-svn: 169283
2012-12-04 17:00:11 +00:00
Jim Grosbach
97e019d375 ARM: Darwin BL/BLX relocations to out-of-range symbols.
When a BL/BLX references a symbol in the same translation unit that is
out of range, use an external relocation. The linker will use this to
generate a branch island rather than a direct reference, allowing the
relocation to resolve correctly.

rdar://12359919

llvm-svn: 164615
2012-09-25 18:07:17 +00:00
Kevin Enderby
cde92a2741 Fix a bug in ARMMachObjectWriter::RecordRelocation() in ARMMachObjectWriter.cpp
where the other_half of the movt and movw relocation entries needs to get set
and only with the 16 bits of the other half.

rdar://10038370

llvm-svn: 160978
2012-07-30 18:46:15 +00:00
Jim Grosbach
343a996ca5 Refactor data-in-code annotations.
Use a dedicated MachO load command to annotate data-in-code regions.
This is the same format the linker produces for final executable images,
allowing consistency of representation and use of introspection tools
for both object and executable files.

Data-in-code regions are annotated via ".data_region"/".end_data_region"
directive pairs, with an optional region type.

data_region_directive := ".data_region" { region_type }
region_type := "jt8" | "jt16" | "jt32" | "jta32"
end_data_region_directive := ".end_data_region"

The previous handling of ARM-style "$d.*" labels was broken and has
been removed. Specifically, it didn't handle ARM vs. Thumb mode when
marking the end of the section.

rdar://11459456

llvm-svn: 157062
2012-05-18 19:12:01 +00:00
Kevin Enderby
ef39671f98 Fixed a bug in llvm-objdump when disassembling using -macho option for a binary
containing no symbols.  Fixed the crash and fixed it not disassembling anything.

llvm-svn: 157031
2012-05-18 00:13:56 +00:00
Kevin Enderby
8feefef6ff Add a test case for r156840, a fix to llvm-objdump when disassembling using
-macho to disassemble the last symbol to the end of the section.

llvm-svn: 156850
2012-05-15 20:20:50 +00:00
Kevin Enderby
1ab00df6a7 Fix issues with the ARM bl and blx thumb instructions and the J1 and J2 bits
for the assembler and disassembler.  Which were not being set/read correctly
for offsets greater than 22 bits in some cases.

Changes to lib/Target/ARM/ARMAsmBackend.cpp from Gideon Myles!

llvm-svn: 156118
2012-05-03 22:41:56 +00:00
Eli Bendersky
3ef88c1833 Continue cleanup of LIT, getting rid of the remaining artifacts from dejagnu
* Removed test/lib/llvm.exp - it is no longer needed 
* Deleted the dg.exp reading code from test/lit.cfg. There are no dg.exp files
  left in the test suite so this code is no longer required. test/lit.cfg is
  now much shorter and clearer 
* Removed a lot of duplicate code in lit.local.cfg files that need access to
  the root configuration, by adding a "root" attribute to the TestingConfig
  object. This attribute is dynamically computed to provide the same
  information as was previously provided by the custom getRoot functions. 
* Documented the config.root attribute in docs/CommandGuide/lit.pod

llvm-svn: 153408
2012-03-25 09:02:19 +00:00
Jim Grosbach
b562c4f2fa ARM non-scattered MachO relocations for movw/movt.
Needed when building -mdynamic-no-pic code.

rdar://10459256

llvm-svn: 153097
2012-03-20 17:25:45 +00:00
Richard Trieu
4eaabe29a7 Fix flags for test in MC/MachO/ARM/empty-function-nop.ll
llvm-svn: 151778
2012-03-01 00:29:09 +00:00
Jim Grosbach
cb853fbdc9 ARM implement TargetInstrInfo::getNoopForMachoTarget()
Without this hook, functions w/ a completely empty body (including no
epilogue) will cause an MCEmitter assertion failure.

For example,
define internal fastcc void @empty_function() {
  unreachable
}

rdar://10947471

llvm-svn: 151673
2012-02-28 23:53:30 +00:00
Eli Bendersky
4afdeeb682 Replace all instances of dg.exp file with lit.local.cfg, since all tests are run with LIT now and now Dejagnu. dg.exp is no longer needed.
Patch reviewed by Daniel Dunbar. It will be followed by additional cleanup patches.

llvm-svn: 150664
2012-02-16 06:28:33 +00:00
Jim Grosbach
012239e10a ARM Darwin symbol ref differences w/o subsection-via-symbols.
When not using subsections via symbols, the assembler can resolve
symbol differences (including pcrel references) to non-local
labels at assembly time, not just those in the same atom.

llvm-svn: 148865
2012-01-24 21:45:25 +00:00
Jim Grosbach
48afa48c3e Add testcase.
llvm-svn: 148454
2012-01-19 01:36:59 +00:00
Jim Grosbach
a1e220fa82 Thumb2 relaxation for LDR(literal).
If the fixup is out of range for the Thumb1 instruction, relax it
to the Thumb2 encoding instead.

rdar://10711829

llvm-svn: 148424
2012-01-18 21:54:16 +00:00
Jim Grosbach
e6d2a7a097 MC tweak symbol difference resolution for non-local symbols.
When the non-local symbol in the expression is in the same fragment
as the second symbol, the assembler can still evaluate the expression
without needing a relocation.

For example, on ARM:
_foo:
	ldr lr, (_foo - 4)

rdar://10348687

llvm-svn: 148341
2012-01-17 22:14:39 +00:00
Jim Grosbach
2f57374e32 Darwin assembler improved relocs when w/o subsections_via_symbols.
When the file isn't being built with subsections-via-symbols, symbol
differences involving non-local symbols can be resolved more aggressively.
Needed for gas compatibility.

llvm-svn: 146054
2011-12-07 19:46:59 +00:00
Jim Grosbach
61d2b8b2f9 Tidy up. Move MachO tests to MachO directory.
llvm-svn: 146038
2011-12-07 17:50:28 +00:00
NAKAMURA Takumi
ed2be25205 test/MC: Introduce MC/MachO/ARM, and relocate relax-thumb2-branches.s into it.
FIXME: Restore more other arch-dependent MachO tests. (eg. r126401 and r133856)
llvm-svn: 145925
2011-12-06 06:48:26 +00:00