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LLVM backend for 6502
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Hal Finkel ac8ba0c0fd Disable compare sinking in CodeGenPrepare when multiple condition registers are available 
As noted in the comment above CodeGenPrepare::OptimizeInst, which aggressively
sinks compares to reduce pressure on the condition register(s), for targets
such as PowerPC with multiple condition registers, this may not be the right
thing to do. This adds an HasMultipleConditionRegisters boolean to TLI, and
CodeGenPrepare::OptimizeInst is skipped when HasMultipleConditionRegisters is
true.

This functionality will be used by the PowerPC backend in an upcoming commit.
Especially when the PowerPC backend starts tracking individual condition
register bits as separate allocatable entities (which will happen in this
upcoming commit), this sinking from CodeGenPrepare::OptimizeInst is
significantly suboptimial.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198354 91177308-0d34-0410-b5e6-96231b3b80d8
2014-01-02 21:13:43 +00:00
autoconf Update the copyright credits -- Happy new year 2014! 2014-01-01 08:27:31 +00:00
bindings Makefile.ocaml: Tweak to use --system-libs. 2013-12-20 00:36:59 +00:00
cmake [CMake] Add missing set_output_directory after Takumi's change in r198205. 2014-01-02 19:47:45 +00:00
docs Remove the 's' DataLayout specification 2014-01-01 22:29:43 +00:00
examples
include Disable compare sinking in CodeGenPrepare when multiple condition registers are available 2014-01-02 21:13:43 +00:00
lib Disable compare sinking in CodeGenPrepare when multiple condition registers are available 2014-01-02 21:13:43 +00:00
projects
test Fix all the verifier tests I added for address spaces. 2014-01-02 21:09:05 +00:00
tools Port r198087 and r198089 (strip dead code by default) from make to cmake. 2013-12-30 03:36:05 +00:00
unittests Make llvm::Regex non-copyable but movable. 2014-01-02 19:04:59 +00:00
utils [TableGen] Handle ValueType in CodeGenDAGPatterns GetNumNodeResults 2014-01-02 20:47:05 +00:00
.arcconfig
.clang-format
.gitignore
CMakeLists.txt [CMake][VS][XCode] Restruct the output directory layout more comfortable, ${BINARY_DIR}/${BUILD_MODE}/(bin|lib) 2013-12-30 06:48:30 +00:00
CODE_OWNERS.TXT
configure Update the copyright credits -- Happy new year 2014! 2014-01-01 08:27:31 +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
Makefile
Makefile.common
Makefile.config.in
Makefile.rules Strip dead code when linking by default with BFD ld (linux, ...) and ld64 (os x). 2013-12-27 22:38:59 +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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If you're writing a package for LLVM, see docs/Packaging.rst for our
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