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LLVM backend for 6502
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970755e519
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Shuxin Yang 970755e519 This patch is to fix radar://8426430. It is about llvm support of __builtin_debugtrap() 
which is supposed to consistently raise SIGTRAP across all systems. In contrast,
__builtin_trap() behave differently on different systems. e.g. it raises SIGTRAP on ARM, and
SIGILL on X86. The purpose of __builtin_debugtrap() is to consistently provide "trap"
functionality, in the mean time preserve the compatibility with on gcc on __builtin_trap().

  The X86 backend is already able to handle debugtrap(). This patch is to:
  1) make front-end recognize "__builtin_debugtrap()" (emboddied in the one-line change to Clang).
  2) In DAG legalization phase, by default, "debugtrap" will be replaced with "trap", which
     make the __builtin_debugtrap() "available" to all existing ports without the hassle of
     changing their code.
  3) If trap-function is specified (via -trap-func=xyz to llc), both __builtin_debugtrap() and
     __builtin_trap() will be expanded into the function call of the specified trap function.
    This behavior may need change in the future.

  The provided testing-case is to make sure 2) and 3) are working for ARM port, and we
already have a testing case for x86. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166300 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 20:11:16 +00:00
autoconf Re-enable support for --program-prefix. 2012-10-01 18:40:32 +00:00
bindings Fix the ocaml binding breakage from TargetData -> DataLayout changes. 2012-10-08 17:06:25 +00:00
cmake [CMake] add_lit_testsuite: EXCLUDE_FROM_ALL excludes the test ${target} out of check-all. 2012-10-10 13:32:55 +00:00
docs Fix some doc-os. 2012-10-19 17:23:39 +00:00
examples ExceptionDemo.cpp: Use Function::setDoesNotReturn(). Attributes stuff was updated. 2012-10-12 14:11:48 +00:00
include This patch is to fix radar://8426430. It is about llvm support of __builtin_debugtrap() 2012-10-19 20:11:16 +00:00
lib This patch is to fix radar://8426430. It is about llvm support of __builtin_debugtrap() 2012-10-19 20:11:16 +00:00
projects Re-enable support for --program-prefix. 2012-10-01 18:40:32 +00:00
runtime Place temporary LTO files into their own subdirectory. 2012-10-10 05:29:15 +00:00
test This patch is to fix radar://8426430. It is about llvm support of __builtin_debugtrap() 2012-10-19 20:11:16 +00:00
tools Reapply the TargerTransformInfo changes, minus the changes to LSR and Lowerinvoke. 2012-10-18 23:22:48 +00:00
unittests Use an export list when building JIT unittests. <rdar://problem/12473675> 2012-10-18 20:25:36 +00:00
utils lit: Propagate TERM variable in environment, some tools can do really obscure 2012-10-19 17:23:34 +00:00
.gitignore Add extra vim swap file pattern 2012-10-09 23:48:34 +00:00
CMakeLists.txt Removing dependency on third party library for Intel JIT event support. 2012-09-28 17:35:20 +00:00
CODE_OWNERS.TXT Add the list of code owners to the top level of the LLVM source tree to 2012-07-26 08:04:09 +00:00
configure Re-enable support for --program-prefix. 2012-10-01 18:40:32 +00:00
CREDITS.TXT Move TargetData to DataLayout. 2012-10-08 16:40:38 +00:00
LICENSE.TXT Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Remove dead variable. 2012-10-10 18:20:49 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in Re-enable support for --program-prefix. 2012-10-01 18:40:32 +00:00
Makefile.rules Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905> 2012-10-12 21:48:14 +00:00
README.txt test commit 2012-07-11 17:34:12 +00:00

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