LLVM backend for 6502
Go to file
Sanjoy Das a5a3e2d58a [ImplicitNullChecks] Be smarter in picking the memory op.
Summary:
Before this change ImplicitNullChecks would only pick loads of the form:

```
   test Reg, Reg
   jz elsewhere
 fallthrough:
   movl 32(Reg), Reg2
```

but not (say)

```
   test Reg, Reg
   jz elsewhere
 fallthrough:
   inc Reg3
   movl 32(Reg), Reg2
```

This change teaches ImplicitNullChecks to look through "unrelated"
instructions like `inc Reg3` when searching for a load instruction
to convert to a trapping load.

Reviewers: atrick, JosephTremoulet, reames

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11044

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241850 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-09 20:13:25 +00:00
autoconf
bindings
cmake
docs Extended syntax of vector version of getelementptr instruction. 2015-07-09 07:42:48 +00:00
examples
include MIR Serialization: Serialize the simple MachineFrameInfo attributes. 2015-07-09 19:55:27 +00:00
lib [ImplicitNullChecks] Be smarter in picking the memory op. 2015-07-09 20:13:25 +00:00
projects
resources
test [ImplicitNullChecks] Be smarter in picking the memory op. 2015-07-09 20:13:25 +00:00
tools Create BSD archives by default on OS X. 2015-07-09 20:12:50 +00:00
unittests
utils
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt
CODE_OWNERS.TXT
configure
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules
README.txt

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

This directory and its subdirectories contain source code for LLVM,
a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you're writing a package for LLVM, see docs/Packaging.rst for our
suggestions.