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macros
Patch based on Sourabh Singh's D69839 patch.
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This was arbitrarily appearing in only the last section emitted - which
made tests more sensitive than they needed to be (removing the last
section - like the macinfo section change that's coming after this)
would, surprisingly, move the blank line to the previous section.
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The macinfo support was broken for LTO situations, by terminating
macinfo lists only once - multiple macinfo contributions were correctly
labeled, but they all continued/flowed into later contributions until
only one terminator appeared at the end of the section.
Correctly terminate each contribution & fix the parsing to handle this
situation too. The parsing fix is also necessary for dumping linked
binaries - the previous code would stop at the end of the first
contribution - missing all later contributions in a linked binary.
It'd be nice to improve the dumping to print the offsets of each
contribution so it'd be easier to know which CU AT_macro_info refers to
which macinfo contribution.
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in debug sections.
Summary:
This patch works around the bug in the ptxas tool with the processing of bytes
separated by the comma symbol. The emission of the packed string is
temporarily disabled.
Reviewers: tra
Subscribers: jholewinski, jdoerfert, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D59148
llvm-svn: 355740
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Enable full support for the debug info.
Differential revision: https://reviews.llvm.org/D46189
llvm-svn: 351974
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This reverts commit r351972. Some pieces of the patch was not applied
correctly.
llvm-svn: 351973
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Enable full support for the debug info. Recommit to fix the emission of
the not required closing brace.
Differential revision: https://reviews.llvm.org/D46189
llvm-svn: 351972
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This reverts commit r351846.
This patch may generate illegal assembly code, see
```
$ ./bin/clang -cc1 -triple nvptx64-nvidia-cuda -aux-triple x86_64-grtev4-linux-gnu -S -disable-free -disable-llvm-verifier -discard-value-names -main-file-name new.cc -mrelocation-model pic -pic-level 2 -mthread-model posix -fmerge-all-constants -mdisable-fp-elim -relaxed-aliasing -no-integrated-as -mpie-copy-relocations -munwind-tables -fcuda-is-device -target-feature +ptx60 -target-cpu sm_35 -dwarf-column-info -debug-info-kind=line-directives-only -dwarf-version=2 -debugger-tuning=gdb -o empty.s -x cuda empty.cc
$ cat empty.s
//
// Generated by LLVM NVPTX Back-End
//
.version 6.0
.target sm_35
.address_size 64
}
```
llvm-svn: 351966
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Summary: Enable full support for the debug info.
Reviewers: echristo
Subscribers: jholewinski, aprantl, JDevlieghere, llvm-commits
Differential Revision: https://reviews.llvm.org/D46189
llvm-svn: 351846
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NVPTX format requires that no labels/label arithmetics is used in the
debug info sections. To avoid possible problems with the adding/modifying the debug info functionality, made these tests more strict.
llvm-svn: 350731
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Summary:
If the target does not support `.asciz` and `.ascii` directives, the
strings are represented as bytes and each byte is placed on the new line
as a separate byte directive `.b8 <data>`. NVPTX target allows to
represent the vector of the data of the same type as a vector, where
values are separated using `,` symbol: `.b8 <data1>,<data2>,...`. This
allows to reduce the size of the final PTX file. Ptxas tool includes ptx
files into the resulting binary object, so reducing the size of the PTX
file is important.
Reviewers: tra, jlebar, echristo
Subscribers: jholewinski, llvm-commits
Differential Revision: https://reviews.llvm.org/D45822
llvm-svn: 345142
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debug info emission.""
This reapplies commits: r330271, r330592, r330779.
[DEBUG] Initial adaptation of NVPTX target for debug info emission.
Summary:
Patch adds initial emission of the debug info for NVPTX target.
Currently, only .file and .loc directives are emitted, everything else is
commented out to not break the compilation of Cuda.
llvm-svn: 332689
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In order to set breakpoints on labels and list source code around
labels, we need collect debug information for labels, i.e., label
name, the function label belong, line number in the file, and the
address label located. In order to keep these information in LLVM
IR and to allow backend to generate debug information correctly.
We create a new kind of metadata for labels, DILabel. The format
of DILabel is
!DILabel(scope: !1, name: "foo", file: !2, line: 3)
We hope to keep debug information as much as possible even the
code is optimized. So, we create a new kind of intrinsic for label
metadata to avoid the metadata is eliminated with basic block.
The intrinsic will keep existing if we keep it from optimized out.
The format of the intrinsic is
llvm.dbg.label(metadata !1)
It has only one argument, that is the DILabel metadata. The
intrinsic will follow the label immediately. Backend could get the
label metadata through the intrinsic's parameter.
We also create DIBuilder API for labels to be used by Frontend.
Frontend could use createLabel() to allocate DILabel objects, and use
insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR.
Differential Revision: https://reviews.llvm.org/D45024
Patch by Hsiangkai Wang.
llvm-svn: 331841
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info emission."
This appears to have some issues associated with the file directive output
causing multiple global symbols with the name "file" to be emitted into a
startup section. I'm investigating more specific causes and working with the
original author.
This reverts commit r330271.
Also Revert "[DEBUGINFO, NVPTX] Add the test for the debug info of the local"
This reverts commit r330592 and the follow up of 330779 as the testcase is dependent upon r330271.
llvm-svn: 331237
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Summary:
Patch adds initial emission of the debug info for NVPTX target.
Currently, only .file and .loc directives are emitted, everything else is
commented out to not break the compilation of Cuda.
Reviewers: echristo, jlebar, tra, jholewinski
Subscribers: mgorny, aprantl, JDevlieghere, llvm-commits
Differential Revision: https://reviews.llvm.org/D41827
llvm-svn: 330271
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llvm-svn: 321822
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