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LLVM backend for 6502
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2be0fae98c
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Andrew Trick 2be0fae98c Track register pressure a bit more carefully (weird corner case). 
This solves a problem where a def machine operand has no uses but has
not been marked dead. In this case, the initial RP analysis was being
extra precise and determining from LiveIntervals the the register was
actually dead. This caused us to omit the register from the RP
tracker's block live out. That's all good, but the per-instruction
summary still accounted for it as a valid def. This could cause an
assertion in the tracker later when we underflow pressure.

This is from a bug report on an out-of-tree target. It is not
reproducible on well-behaved targets. I'm just making an obvious fix
without unit test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200941 91177308-0d34-0410-b5e6-96231b3b80d8
2014-02-06 19:20:41 +00:00
autoconf Fix configure to find arc4random via header files. 2014-02-05 05:04:36 +00:00
bindings Makefile.ocaml: Tweak to use --system-libs. 2013-12-20 00:36:59 +00:00
cmake Fix configure to find arc4random via header files. 2014-02-05 05:04:36 +00:00
docs Remove support for not using .loc directives. 2014-02-05 18:00:21 +00:00
examples [cleanup] Re-sort the examples #include lines with my sort_includes 2014-01-13 09:58:03 +00:00
include Remove const_cast for STI when parsing inline asm 2014-02-06 18:19:40 +00:00
lib Track register pressure a bit more carefully (weird corner case). 2014-02-06 19:20:41 +00:00
projects llvm/projects/CMakeLists.txt: Add dragonegg. 2014-01-24 12:53:08 +00:00
test R600/SI: Add a MUBUF store pattern for Reg+Imm offsets 2014-02-06 18:36:41 +00:00
tools [PM] Add a new "lazy" call graph analysis pass for the new pass manager. 2014-02-06 04:37:03 +00:00
unittests Fix layering StringRef copy using BumpPtrAllocator. 2014-02-05 22:22:56 +00:00
utils Delete all of the CodeGenInstructions from CodeGenTarget destructor. 2014-02-06 06:27:59 +00:00
.arcconfig
.clang-format
.gitignore Added .DS_Store entry in .gitignore for ignoring .DS_Store files in the source 2014-01-25 15:15:16 +00:00
CMakeLists.txt [CMake] Move -stdlib=libc++ handling into its own file. 2014-02-05 00:02:37 +00:00
CODE_OWNERS.TXT Update email address. 2013-12-04 09:42:49 +00:00
configure Fix configure to find arc4random via header files. 2014-02-05 05:04:36 +00:00
CREDITS.TXT Fix documentation typos 2013-12-20 00:33:39 +00:00
LICENSE.TXT Update the copyright credits -- Happy new year 2014! 2014-01-01 08:27:31 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile Fix bad variable syntax in r199413 2014-01-17 00:40:39 +00:00
Makefile.common
Makefile.config.in
Makefile.rules [Mips]Work around MIPS linker issues exposed by commit r198087 until bug 18360 is resolved 2014-01-03 22:18:43 +00:00
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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