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David Blaikie c3f30a7fc6 Reapply: DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses) 
Originally committed in r349333, reverted in r349353.

GCC emitted these unconditionally on/before 4.4/March 2012
Clang emitted these unconditionally on/before 3.5/March 2014

This improves performance when parsing CUs (especially those using split
DWARF) that contain no code ranges (such as the mini CUs that may be
created by ThinLTO importing - though generally they should be/are
avoided, especially for Split DWARF because it produces a lot of very
small CUs, which don't scale well in a bunch of other ways too
(including size)).

The revert was due to a (Google internal) test that had some checked in old
object files missing DW_AT_ranges. That's since been fixed.

llvm-svn: 349968
 		2018-12-21 22:25:01 +00:00
..
Analysis [IR] Add Instruction::isLifetimeStartOrEnd, NFC 2018-12-21 21:49:40 +00:00
AsmParser [ThinLTO] Compute synthetic function entry count 2018-12-13 19:54:27 +00:00
BinaryFormat llvm-dwarfdump: Improve/fix pretty printing of array dimensions 2018-12-19 19:34:24 +00:00
Bitcode [ThinLTO] Compute synthetic function entry count 2018-12-13 19:54:27 +00:00
CodeGen [IR] Add Instruction::isLifetimeStartOrEnd, NFC 2018-12-21 21:49:40 +00:00
DebugInfo Reapply: DebugInfo: Assume an absence of ranges or high_pc on a CU means the CU is empty (devoid of code addresses) 2018-12-21 22:25:01 +00:00
Demangle Add missing include file. 2018-12-17 16:42:26 +00:00
ExecutionEngine Implement IMAGE_REL_AMD64_SECREL for RuntimeDyldCOFFX86_64 2018-12-12 00:04:06 +00:00
FuzzMutate
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Fuzzer
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IR [IR] Add Instruction::isLifetimeStartOrEnd, NFC 2018-12-21 21:49:40 +00:00
IRReader
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LTO [ThinLTO] Remove dllimport attribute from locally defined symbols 2018-12-19 19:07:45 +00:00
LineEditor
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Linker ThinLTO: Do not import debug info for imported global constants 2018-12-05 21:42:17 +00:00
MC [Dwarf/AArch64] Return address signing B key dwarf support 2018-12-21 10:45:08 +00:00
MCA [llvm-mca] Dump mask in hex 2018-12-18 20:45:50 +00:00
Object [llvm-ar] Simplify string table get-or-insert pattern with .insert, NFC 2018-12-19 20:54:06 +00:00
ObjectYAML [yaml2obj/obj2yaml] - Support dumping/parsing ABI version. 2018-12-20 10:43:49 +00:00
OptRemarks Reland: [OptRemarks] Add library for parsing optimization remarks 2018-10-10 18:43:42 +00:00
Option [opt] Change the parameter of OptTable::PrintHelp from Name to Usage and don't append "[options] <inputs>" 2018-10-10 00:15:31 +00:00
Passes [NewPM] -print-module-scope -print-after now prints module even after invalidated Loop/SCC 2018-12-21 11:49:05 +00:00
ProfileData Support for remapping profile data when symbols change, for sample-based 2018-10-10 21:31:01 +00:00
Support Buildfix for r345516 (Clang compilation failing). 2018-12-18 18:23:36 +00:00
TableGen Let TableGen write output only if it changed, instead of doing so in cmake, attempt 2 2018-12-19 13:35:53 +00:00
Target [X86] Add isel patterns to match BMI/TBMI instructions when lowering has turned the root nodes into one of the flag producing binops. 2018-12-21 21:42:43 +00:00
Testing
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TextAPI [TextAPI][elfabi] Fix YAML support for weak symbols 2018-12-21 20:45:58 +00:00
ToolDrivers [opt] Change the parameter of OptTable::PrintHelp from Name to Usage and don't append "[options] <inputs>" 2018-10-10 00:15:31 +00:00
Transforms [IR] Add Instruction::isLifetimeStartOrEnd, NFC 2018-12-21 21:49:40 +00:00
WindowsManifest
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XRay [Object] Rename getRelrRelocationType to getRelativeRelocationType 2018-12-14 07:46:58 +00:00
CMakeLists.txt [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00
LLVMBuild.txt [llvm-mca] Move llvm-mca library to llvm/lib/MCA. 2018-12-17 08:08:31 +00:00