Bill Wendling 5388e6f9b3 Support lowering of empty aggregates.
This crash was pretty common while compiling Rust for iOS (armv7). Reason -
SjLj preparation step was lowering aggregate arguments as ExtractValue +
InsertValue. ExtractValue has assertion which checks that there is some data in
value, which is not true in case of empty (no fields) structures. Rust uses
them quite extensively so this patch uses a 'select true, %val, undef'
instruction to lower the argument.

Patch by Valerii Hiora.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212922 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-14 06:22:36 +00:00
2014-06-02 12:54:32 +00:00
2014-07-14 05:01:53 +00:00
2014-07-14 06:22:36 +00:00
2014-07-14 05:01:53 +00:00
2014-07-14 05:01:53 +00:00
2014-06-25 13:13:36 +00:00
2014-05-29 19:59:58 +00:00

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, 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
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started with LLVM and docs/README.txt for an overview of LLVM's
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If you're writing a package for LLVM, see docs/Packaging.rst for our
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Description
LLVM backend for 6502
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