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LLVM backend for 6502
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Rafael Espindola 702bcce747 The dominance computation already has logic for computing if an edge dominates 
a use or a BB, but it is inline in the handling of the invoke instruction.

This patch refactors it so that it can be used in other cases. For example, in

define i32 @f(i32 %x) {
bb0:
  %cmp = icmp eq i32 %x, 0
  br i1 %cmp, label %bb2, label %bb1
bb1:
  br label %bb2
bb2:
  %cond = phi i32 [ %x, %bb0 ], [ 0, %bb1 ]
  %foo = add i32 %cond, %x
  ret i32 %foo
}

GVN should be able to replace %x with 0 in any use that is dominated by the
true edge out of bb0. In the above example the only such use is the one in
the phi.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161429 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-07 17:30:46 +00:00
autoconf Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +00:00
bindings Remove tabs. 2012-07-19 00:23:13 +00:00
cmake [CMake] add_lit_target: Remove comments about add_dependencies. It is not a bug in cmake that add_custom_target(DEPENDS) would not accept targets but file-level dependencies. 2012-08-04 02:14:44 +00:00
docs Add yaml2obj. A utility to convert YAML to binaries. 2012-08-02 19:16:56 +00:00
examples Move llvm/Support/IRBuilder.h -> llvm/IRBuilder.h 2012-06-29 12:38:19 +00:00
include The dominance computation already has logic for computing if an edge dominates 2012-08-07 17:30:46 +00:00
lib The dominance computation already has logic for computing if an edge dominates 2012-08-07 17:30:46 +00:00
projects Fix a typo (the the => the) 2012-07-23 08:51:15 +00:00
runtime Free the allocated filename. Found by clang static analyzer. 2012-06-15 09:11:47 +00:00
test Fix the representation of debug line table in DebugInfo LLVM library, 2012-08-07 11:46:57 +00:00
tools Reduce indentation by early exiting. 2012-08-06 22:52:45 +00:00
unittests Update cmake build. 2012-08-04 09:52:39 +00:00
utils Remove extraneous ';'. 2012-08-04 10:31:40 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt Add yaml2obj. A utility to convert YAML to binaries. 2012-08-02 19:16:56 +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 Add support for the OpenBSD for Bitrig. 2012-08-06 20:52:18 +00:00
CREDITS.TXT Alphabetize. 2012-06-19 23:47:58 +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 Do not install llvm-config-host for cross-builds of clang. rdar://11317847 2012-05-09 00:07:02 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in Add a configure flag for enabling -Werror on the command line 2012-08-03 19:58:20 +00:00
Makefile.rules Add a configure flag for enabling -Werror on the command line 2012-08-03 19:58:20 +00:00
README.txt test commit 2012-07-11 17:34:12 +00:00

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 HTML documentation provided in docs/index.html for further
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If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.