Prakhar Bahuguna af672fb209 [ARM] Implement execute-only support in CodeGen ... This implements execute-only support for ARM code generation, which prevents the compiler from generating data accesses to code sections. The following changes are involved: * Add the CodeGen option "-arm-execute-only" to the ARM code generator. * Add the clang flag "-mexecute-only" as well as the GCC-compatible alias "-mpure-code" to enable this option. * When enabled, literal pools are replaced with MOVW/MOVT instructions, with VMOV used in addition for floating-point literals. As the MOVT instruction is required, execute-only support is only available in Thumb mode for targets supporting ARMv8-M baseline or Thumb2. * Jump tables are placed in data sections when in execute-only mode. * The execute-only text section is assigned section ID 0, and is marked as unreadable with the SHF_ARM_PURECODE flag with symbol 'y'. This also overrides selection of ELF sections for globals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289784 91177308-0d34-0410-b5e6-96231b3b80d8		2016-12-15 07:59:08 +00:00
..
ARMAttributeParser.cpp
ARMAttributeParser.h
ARMEHABIPrinter.h
ARMWinEHPrinter.cpp
ARMWinEHPrinter.h
CMakeLists.txt
CodeView.h
COFFDumper.cpp
COFFImportDumper.cpp
ELFDumper.cpp	[ARM] Implement execute-only support in CodeGen	2016-12-15 07:59:08 +00:00
Error.cpp
Error.h
llvm-readobj.cpp
llvm-readobj.h
LLVMBuild.txt
MachODumper.cpp
ObjDumper.cpp
ObjDumper.h
StackMapPrinter.h
Win64EHDumper.cpp
Win64EHDumper.h