llvm-project/llvm/test/tools/dsymutil/Inputs
Shiva Chen 2c864551df [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label.
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
2018-05-09 02:40:45 +00:00
..
alias
dead-stripped
empty_range
inlined-low_pc
mismatch
module-warnings
modules
modules-dwarf-version
modules-empty
odr-anon-namespace
odr-fwd-declaration
odr-fwd-declaration2
odr-member-functions
odr-uniquing
scattered-reloc
submodules
Info.plist
absolute_sym.macho.i386
absolute_sym.macho.i386.o
basic-archive.macho.x86_64
basic-lto-dw4.macho.x86_64
basic-lto-dw4.macho.x86_64.o
basic-lto.macho.x86_64
basic-lto.macho.x86_64.o
basic-with-libfat-test.macho.x86_64
basic.macho.i386
basic.macho.x86_64
basic1.c
basic1.macho.x86_64.o
basic2-custom-linetable.macho.x86_64.o
basic2.c
basic2.macho.x86_64.o
basic3.c
basic3.macho.x86_64.o
common.macho.x86_64
common.macho.x86_64.o
dwarf4.o
dwarf5.o
empty-CU.o [dsymutil] Don't crash on empty CU 2018-04-08 17:35:17 +00:00
empty-CU.s [dsymutil] Don't crash on empty CU 2018-04-08 17:35:17 +00:00
fat-test.arm.dylib
fat-test.arm.o
fat-test.c
fat-test.dylib
fat-test.o
frame-dw2.ll [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
frame-dw4.ll [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
frame.c
invalid.o [dwarfdump] Fix spurious verification errors for DW_AT_location attributes 2018-02-17 13:06:37 +00:00
invalid.s [dwarfdump] Fix spurious verification errors for DW_AT_location attributes 2018-02-17 13:06:37 +00:00
label.o [dsymutil] Correctly handle DW_TAG_label 2018-02-20 17:34:29 +00:00
libbasic.a
libfat-test.a
null_die.o
objc.macho.x86_64 [dsymutil] Generate Apple accelerator tables 2018-01-29 14:52:50 +00:00
objc.macho.x86_64.o [dsymutil] Generate Apple accelerator tables 2018-01-29 14:52:50 +00:00
sibling.o [dsymutil] Skip DW_AT_sibling attributes. 2018-02-27 19:24:36 +00:00
swift-ast.macho.x86_64
swift-ast.swiftmodule
swift-dwarf-loc.macho.x86_64
swift-dwarf-loc.macho.x86_64.o
thumb.armv7m
thumb.o