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llvm-mirror/lib/CodeGen/AsmPrinter
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Florian Hahn 1f9320a4cd Align definition of DW_OP_plus with DWARF spec [3/3] 
Summary:
This patch is part of 3 patches that together form a single patch, but must be introduced in stages in order not to break things.
 
The way that LLVM interprets DW_OP_plus in DIExpression nodes is basically that of the DW_OP_plus_uconst operator since LLVM expects an unsigned constant operand. This unnecessarily restricts the DW_OP_plus operator, preventing it from being used to describe the evaluation of runtime values on the expression stack. These patches try to align the semantics of DW_OP_plus and DW_OP_minus with that of the DWARF definition, which pops two elements off the expression stack, performs the operation and pushes the result back on the stack.
 
This is done in three stages:
• The first patch (LLVM) adds support for DW_OP_plus_uconst.
• The second patch (Clang) contains changes all its uses from DW_OP_plus to DW_OP_plus_uconst.
• The third patch (LLVM) changes the semantics of DW_OP_plus and DW_OP_minus to be in line with its DWARF meaning. This patch includes the bitcode upgrade from legacy DIExpressions.

Patch by Sander de Smalen.

Reviewers: echristo, pcc, aprantl

Reviewed By: aprantl

Subscribers: fhahn, javed.absar, aprantl, llvm-commits

Differential Revision: https://reviews.llvm.org/D33894

llvm-svn: 305386
2017-06-14 13:14:38 +00:00
..
AddressPool.cpp Move helpers into anonymous namespaces. NFC. 2016-08-06 11:13:10 +00:00
AddressPool.h
ARMException.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
AsmPrinter.cpp IR: Replace the "Linker Options" module flag with "llvm.linker.options" named metadata. 2017-06-12 20:10:48 +00:00
AsmPrinterDwarf.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
AsmPrinterHandler.h
AsmPrinterInlineAsm.cpp Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
ByteStreamer.h
CMakeLists.txt [CMake] NFC. Updating CMake dependency specifications 2016-11-17 04:36:50 +00:00
CodeViewDebug.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
CodeViewDebug.h [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-06 22:22:41 +00:00
DbgValueHistoryCalculator.cpp DbgValueHistoryCalculator: Ignore call instructions that claim to clobber SP. 2017-06-01 21:14:58 +00:00
DbgValueHistoryCalculator.h
DebugHandlerBase.cpp Make helper functions static. NFC. 2017-05-26 20:09:00 +00:00
DebugHandlerBase.h Refactor DebugHandlerBase a bit to common non-debug-having-function filtering 2017-02-16 18:48:33 +00:00
DebugLocEntry.h Use print() instead of dump() in code 2017-01-28 06:53:55 +00:00
DebugLocStream.cpp
DebugLocStream.h Sort the remaining #include lines in include/... and lib/.... 2017-06-06 11:49:48 +00:00
DIE.cpp Avoid using relocations for ref_addr in .dwo files 2017-04-22 07:53:44 +00:00
DIEHash.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
DIEHash.h DebugInfo: Include .dwo file name when hashing multiple CUs in a single file 2017-05-29 06:32:34 +00:00
DIEHashAttributes.def Fix DIEHash refactoring that dropped the DW_AT_name from the hash 2017-05-23 18:36:07 +00:00
DwarfAccelTable.cpp This change removes the dependency on DwarfDebug that was used for DW_FORM_ref_addr by making a new DIEUnit class in DIE.cpp. 2016-12-01 18:56:29 +00:00
DwarfAccelTable.h Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
DwarfCFIException.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
DwarfCompileUnit.cpp Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DwarfCompileUnit.h Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
DwarfDebug.cpp Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DwarfDebug.h Fix an assertion failure when duplicate dbg.declares are present. 2017-06-12 22:41:06 +00:00
DwarfException.h Emit .cfi_sections before the first .cfi_startproc 2017-01-02 18:05:27 +00:00
DwarfExpression.cpp Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DwarfExpression.h Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DwarfFile.cpp Make a DWARF generator so we can unit test DWARF APIs with gtest. 2016-12-08 01:03:48 +00:00
DwarfFile.h DWARF: Avoid cross-CU references under Fission 2017-05-12 01:13:45 +00:00
DwarfStringPool.cpp
DwarfStringPool.h
DwarfUnit.cpp Align definition of DW_OP_plus with DWARF spec [3/3] 2017-06-14 13:14:38 +00:00
DwarfUnit.h DWARF: Avoid cross-CU references under Fission 2017-05-12 01:13:45 +00:00
EHStreamer.cpp [EH] Fix the LSDA that we emit for unknown EH personalities 2017-05-31 22:18:49 +00:00
EHStreamer.h
ErlangGCPrinter.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
LLVMBuild.txt Update libdeps to add BinaryFormat, introduced in r304864. 2017-06-07 04:48:49 +00:00
OcamlGCPrinter.cpp [CodeGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC). 2017-06-07 23:53:32 +00:00
WinException.cpp Move Object format code to lib/BinaryFormat. 2017-06-07 03:48:56 +00:00
WinException.h [WinEH] Don't assume endFunction is called while in .text 2016-12-28 19:05:12 +00:00