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LLVM backend for 6502
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5211134fbd
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Devang Patel 5211134fbd Do not sink instruction, if it is not profitable. 
On ARM, peephole optimization for ABS creates a trivial cfg triangle which tempts machine sink to sink instructions in code which is really straight line code. Sometimes this sinking may alter register allocator input such that use and def of a reg is divided by a branch in between, which may result in extra spills. Now mahine sink avoids sinking if final sink destination is post dominator.

Radar 10266272.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146604 91177308-0d34-0410-b5e6-96231b3b80d8
2011-12-14 23:20:38 +00:00
autoconf Hexagon backend support 2011-12-12 21:14:40 +00:00
bindings LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
cmake cmake: work with CMake < 2.8.5 2011-12-12 13:06:25 +00:00
docs Add a blurb about MachineInstr bundling support. 2011-12-14 22:57:45 +00:00
examples LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
include Model ARM predicated write as read-mod-write. e.g. 2011-12-14 20:00:08 +00:00
lib Do not sink instruction, if it is not profitable. 2011-12-14 23:20:38 +00:00
projects Hexagon backend support 2011-12-12 21:14:40 +00:00
runtime LLVMBuild: Remove trailing newline, which irked me. 2011-12-12 19:48:00 +00:00
test Do not sink instruction, if it is not profitable. 2011-12-14 23:20:38 +00:00
tools llvm-nm: refactor in order to support reading files from stdin. 2011-12-13 23:17:29 +00:00
unittests Revert r146363 to allow buildbots to make forward progress. 2011-12-12 17:58:31 +00:00
utils llvm-build: Switch to using the common subdirectory list instead of 2011-12-12 22:45:59 +00:00
.gitignore git: Add tools/lldb to the ignore list. 2011-11-10 22:55:50 +00:00
CMakeLists.txt Don't default the *cached* list of targets to build to an explicit list 2011-12-13 02:19:11 +00:00
configure Hexagon backend support 2011-12-12 21:14:40 +00:00
CREDITS.TXT CREDITS.TXT: Add a line. (test commit) 2011-10-29 23:42:14 +00:00
LICENSE.TXT Happy new year. 2011-06-12 15:26:54 +00:00
llvm.spec.in
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile llvm-config: Replace with C++ version (was llvm-config-2). 2011-12-01 20:18:09 +00:00
Makefile.common
Makefile.config.in Add an optional separate install prefix for internal components. rdar://10217046 2011-11-28 07:59:52 +00:00
Makefile.rules Add a deterministic finite automaton based packetizer for VLIW architectures 2011-12-01 21:10:21 +00:00
README.txt Undo test commit 2011-11-22 20:05:48 +00:00

README.txt 

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

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