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LLVM backend for 6502
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David Blaikie 76ff19ffa7 Disable the -gmlt optimization implemented in r218129 under Darwin due to issues with dsymutil. 
r218129 omits DW_TAG_subprograms which have no inlined subroutines when
emitting -gmlt data. This makes -gmlt very low cost for -O0 builds.

Darwin's dsymutil reasonably considers a CU empty if it has no
subprograms (which occurs with the above optimization in -O0 programs
without any force_inline function calls) and drops the line table, CU,
and everything in this situation, making backtraces impossible.

Until dsymutil is modified to account for this, disable this
optimization on Darwin to preserve the desired functionality.
(see r218545, which should be reverted after this patch, for other
discussion/details)

Footnote:
In the long term, it doesn't look like this scheme (of simplified debug
info to describe inlining to enable backtracing) is tenable, it is far
too size inefficient for optimized code (the DW_TAG_inlined_subprograms,
even once compressed, are nearly twice as large as the line table
itself (also compressed)) and we'll be considering things like Cary's
two level line table proposal to encode all this information directly in
the line table.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218702 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-30 21:28:32 +00:00
autoconf
bindings
cmake Add LLVM_ENABLE_MODULES flag to CMake to enable building with C++ modules. 2014-09-26 22:40:15 +00:00
docs fix a typo in doumentation index. 2014-09-26 06:59:15 +00:00
examples Add doInitialization/doFinalization to DataLayoutPass. 2014-09-10 21:27:43 +00:00
include Split the estimate() interface into separate functions for each type. NFC. 2014-09-30 20:28:48 +00:00
lib Disable the -gmlt optimization implemented in r218129 under Darwin due to issues with dsymutil. 2014-09-30 21:28:32 +00:00
projects
test Disable the -gmlt optimization implemented in r218129 under Darwin due to issues with dsymutil. 2014-09-30 21:28:32 +00:00
tools Extend C disassembler API to allow specifying target features 2014-09-30 16:31:40 +00:00
unittests WinCOFFObjectWriter: optimize the string table for common suffices 2014-09-29 22:43:20 +00:00
utils [AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW. 2014-09-30 11:32:22 +00:00
.arcconfig
.clang-format
.clang-tidy Add .clang-tidy configuration file to provide LLVM-optimized defaults for 2014-09-08 13:30:00 +00:00
.gitignore
CMakeLists.txt Add LLVM_ENABLE_MODULES flag to CMake to enable building with C++ modules. 2014-09-26 22:40:15 +00:00
CODE_OWNERS.TXT Add Tom Stellard's role as 3.5 release manager. 2014-09-12 08:07:31 +00:00
configure
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules Revert my earlier change to add "all" as a dependency to check. In 2014-09-19 18:44:27 +00:00
README.txt

README.txt 

Low Level Virtual Machine (LLVM)
================================

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LLVM is open source software. You may freely distribute it under the terms of
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Please see the documentation provided in docs/ for further
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