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LLVM backend for 6502
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cbbd20879e
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Yuchen Wu cbbd20879e Fixed llvm-cov to count edges instead of blocks. 
This was a fundamental flaw in llvm-cov where it treated the values in
the GCDA files as block counts instead of edge counts. This created
incorrect line counts when branching was present. Instead, the edge
counts should be summed to obtain the correct block count.

The fix was tested using custom test files as well as single source
files from the test-suite directory. The behaviour can be verified by
reading the GCOV documentation that describes the GCDA spec ("ARC_COUNTS
gives the counter values for those arcs that are instrumented") and the
header description provided by GCOVProfiling.cpp ("instruments the code
that runs to records (sic) the edges between blocks that run and emit a
complementary "gcda" file on exit").

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@193299 91177308-0d34-0410-b5e6-96231b3b80d8
2013-10-24 01:51:04 +00:00
autoconf Update so that it uses the `-V' command line option and supports Python 3.x. 2013-10-12 08:42:59 +00:00
bindings
cmake Remove NDBEUG from all release types compile flags. 2013-10-19 07:30:37 +00:00
docs Use address-taken to disambiguate global variable and indirect memops. 2013-10-23 17:28:19 +00:00
examples Add missing #include's to cctype when using isdigit/alpha/etc. 2013-10-12 00:55:57 +00:00
include Fixed llvm-cov to count edges instead of blocks. 2013-10-24 01:51:04 +00:00
lib Fixed llvm-cov to count edges instead of blocks. 2013-10-24 01:51:04 +00:00
projects Revert "Revert "Windows: Add support for unicode command lines"" 2013-10-07 01:00:07 +00:00
test X86: Custom lower sext v16i8 to v16i16, and the corresponding truncate. 2013-10-23 21:06:07 +00:00
tools llvm/tools/llvm-c-test should be built also on msvc. 2013-10-23 17:56:59 +00:00
unittests DWARF type hashing: pointers to members 2013-10-22 18:14:41 +00:00
utils Actually switch the default to use multiprocessing 2013-10-23 22:32:53 +00:00
.arcconfig
.clang-format
.gitignore
CMakeLists.txt CMake: set stack size for MSVC in just one place 2013-10-17 18:39:47 +00:00
CODE_OWNERS.TXT
configure Update so that it uses the `-V' command line option and supports Python 3.x. 2013-10-12 08:42:59 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile.common
Makefile.config.in
Makefile.rules
README.txt Revert "Test commit to check e-mail address. Please discard this." 2013-10-04 10:59:13 +00:00

README.txt 

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

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