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Mirror of https://github.com/RPCS3/llvm-mirror
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Matt Arsenault 204d4c1d7b Allow DataLayout to specify addrspace for allocas. 
LLVM makes several assumptions about address space 0. However,
alloca is presently constrained to always return this address space.
There's no real way to avoid using alloca, so without this
there is no way to opt out of these assumptions.

The problematic assumptions include:
- That the pointer size used for the stack is the same size as
  the code size pointer, which is also the maximum sized pointer.

- That 0 is an invalid, non-dereferencable pointer value.

These are problems for AMDGPU because alloca is used to
implement the private address space, which uses a 32-bit
index as the pointer value. Other pointers are 64-bit
and behave more like LLVM's notion of generic address
space. By changing the address space used for allocas,
we can change our generic pointer type to be LLVM's generic
pointer type which does have similar properties.

llvm-svn: 299888
2017-04-10 22:27:50 +00:00
bindings Go binding: Add GetCurrentDebugLocation to obtain debug location from builder 2017-03-31 04:59:57 +00:00
cmake Respect CMAKE_INSTALL_MANDIR for sphinx generated manpages 2017-04-05 14:49:46 +00:00
docs Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
examples llvm/examples/Kaleidoscope/BuildingAJIT: More fixup corresponding to r295636. 2017-02-20 10:07:41 +00:00
include Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
lib Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
projects [cmake] Include openmp with add_llvm_external_project 2017-03-07 18:54:17 +00:00
resources
runtimes [CMake] Support single target builtins build on Darwin 2017-03-24 02:21:11 +00:00
test Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
tools Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
unittests Allow DataLayout to specify addrspace for allocas. 2017-04-10 22:27:50 +00:00
utils [lit] Try using process pools by default again 2017-04-07 15:28:32 +00:00
.arcconfig project_id is from another era in phabricator land and does not provide any value. 2016-09-27 15:47:29 +00:00
.clang-format
.clang-tidy .clang-tidy: correct style name is 'camelBack' not 'lowerCase'. 2016-09-13 19:04:26 +00:00
.gitignore gitignore: Ignore .vs folder (VS2017 config files) 2017-04-08 00:16:58 +00:00
CMakeLists.txt [CMake] Provide an option to disable runtimes build 2017-03-23 22:40:10 +00:00
CODE_OWNERS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
configure
CREDITS.TXT CODE_OWNERS: Take code ownership of instruction scheduling. 2017-03-10 18:34:37 +00:00
LICENSE.TXT Bump year to 2017 in LICENSE.txt 2017-01-12 18:02:42 +00:00
llvm.spec.in
LLVMBuild.txt
README.txt Test commit. Added a blank line. 2017-03-06 20:45:33 +00:00
RELEASE_TESTERS.TXT Update the release tester for MIPS. NFC. 2017-01-17 11:00:28 +00:00

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 are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.