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Identified with misc-include-cleaner.
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This change will allow to put code pointers in DWARF info fields that are larger than actual pointer size, e.g. 16-bit pointers into 32-bit fields.
The need for this came up while creating support for MSP430 in LLDB. MSP430-GCC already generates DWARF info with 32-bit fields, so this change is necessary for LLDB to maintain compatibility with both GCC and LLVM binaries. Moreover, right now in LLDB there is no support for having DWARF pointer size different from ELF header type, e.g. 16-bit DWARF info within ELF32, and it seems there is no such thing as ELF16.
Since other mainline targets are made to have the same pointer size in both MCAsmInfo and DataLayout, there is no need to change anything there.
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D148042
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Add SwitchSection to return switchSection. The API will be removed soon.
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We could only do this in limited ways (since we emit the TUs first, we
can't use ref_addr (& we can't use that in Split DWARF either) - so we
had to synthesize declarations into the TUs) and they were ambiguous in
some cases (if the CU type had internal linkage, parsing the TU would
require knowing which CU was referencing the TU to know which type the
declaration was for, which seems not-ideal). So to avoid all that, let's
just not reference types defined in the CU from TUs - instead moving the
TU type into the CU (recursively).
This does increase debug info size (by pulling more things out of type
units, into the compile unit) - about 2% of uncompressed dwp file size
for clang -O0 -g -gsplit-dwarf. (5% .debug_info.dwo section size
increase in the .dwp)
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remove `Hi` `Lo` argument from `emitDwarfUnitLength`, so we
can make caller of emitDwarfUnitLength easier.
Reviewed By: MaskRay, dblaikie, ikudrin
Differential Revision: https://reviews.llvm.org/D96409
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The patch fixes emitting the header of the table. The content is
independent of the DWARF format.
Differential Revision: https://reviews.llvm.org/D87022
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Emit{ValueTo,Code}Alignment Emit{DTP,TP,GP}* EmitSymbolValue etc
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Similar to rL328848.
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reading/editing
Recommits 350048, 350050 That broke buildbots because of some typos in
the test case.
llvm-svn: 352019
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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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These patches have broken almost all buildbots on test
DebugInfo/X86/addr_comments.ll. Reverting to green.
llvm-svn: 350052
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llvm-svn: 350050
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reading/editing
llvm-svn: 350048
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llvm-svn: 350047
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Putting addresses in the address pool, even with non-fission, can reduce
relocations - reusing the addresses from debug_info and debug_rnglists
(the latter coming soon)
llvm-svn: 344834
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Currently, we emit DW_AT_addr_base that points to the beginning of
the .debug_addr section. That is not correct for the DWARF5 case because address
table contains the header and the attribute should point to the first entry
following the header.
This is currently the reason why LLDB does not work with such executables correctly.
Patch fixes the issue.
Differential revision: https://reviews.llvm.org/D52168
llvm-svn: 342635
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This revision implements support for generating DWARFv5 .debug_addr section.
The implementation is pretty straight-forward: we just check the dwarf version
and emit section header if needed.
Reviewers: aprantl, dblaikie, probinson
Reviewed by: dblaikie
Differential Revision: https://reviews.llvm.org/D50005
llvm-svn: 338487
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It's implemented in Target & include from other Target headers, so the
header should be in Target.
llvm-svn: 328392
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All these headers already depend on CodeGen headers so moving them into
CodeGen fixes the layering (since CodeGen depends on Target, not the
other way around).
llvm-svn: 318490
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other minor fixes (NFC).
llvm-svn: 311124
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llvm-svn: 277916
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llvm-svn: 238634
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This starts merging MCSection and MCSectionData.
There are a few issues with the current split between MCSection and
MCSectionData.
* It optimizes the the not as important case. We want the production
of .o files to be really fast, but the split puts the information used
for .o emission in a separate data structure.
* The ELF/COFF/MachO hierarchy is not represented in MCSectionData,
leading to some ad-hoc ways to represent the various flags.
* It makes it harder to remember where each item is.
The attached patch starts merging the two by moving the alignment from
MCSectionData to MCSection.
Most of the patch is actually just dropping 'const', since
MCSectionData is mutable, but MCSection was not.
llvm-svn: 237936
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AsmPrinter owns the OutStreamer, so an owning pointer makes sense here. Using a
reference for this is crufty.
llvm-svn: 235752
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requires an address.
Since there's no way to ensure the type unit in the .dwo and the type
unit skeleton in the .o are correlated, this cannot work.
This implementation is a bit inefficient for a few reasons, called out
in comments.
llvm-svn: 207323
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Code review feedback from Paul Robinson on r207022
llvm-svn: 207198
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llvm-svn: 207022
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