This function adds an extra path argument to lto_module_create_from_memory.
The path argument will be passed to makeBuffer to make sure the MemoryBuffer
has a name and the created module has a module identifier.

This is mainly for emitting warning messages from the linker. When we emit
warning message on a module, we can use the module identifier.

rdar://15985737

llvm-svn: 201114

A const ObjectFile needs to be able to provide its name. For an IRObjectFile,
that means being able to call the mangler. Since each IRObjectFile can have
a different mangling, it is natural for them to contain a Mangler which is
therefore also const.

llvm-svn: 201113

Patch by Brad King!

llvm-svn: 201111

llvm-svn: 201110

llvm-svn: 201108

Truncation is just accessing a subregister for any multiple of
the register size, so it's free.

llvm-svn: 201107

The crux of the issue is that LCSSA doesn't preserve stateful alias
analyses. Before r200067, LICM didn't cause LCSSA to run in the LTO pass
manager, where LICM runs essentially without any of the other loop
passes. As a consequence the globalmodref-aa pass run before that loop
pass manager was able to survive the loop pass manager and be used by
DSE to eliminate stores in the function called from the loop body in
Adobe-C++/loop_unroll (and similar patterns in other benchmarks).

When LICM was taught to preserve LCSSA it had to require it as well.
This caused it to be run in the loop pass manager and because it did not
preserve AA, the stateful AA was lost. Most of LLVM's AA isn't stateful
and so this didn't manifest in most cases. Also, in most cases LCSSA was
already running, and so there was no interesting change.

The real kicker is that LCSSA by its definition (injecting PHI nodes
only) trivially preserves AA! All we need to do is mark it, and then
everything goes back to working as intended. It probably was blocking
some other weird cases of stateful AA but the only one I have is
a 1000-line IR test case from loop_unroll, so I don't really have a good
test case here.

Hopefully this fixes the regressions on performance that have been seen
since that revision.

llvm-svn: 201104

This fixes the oversight from r159077.

llvm-svn: 201098

DS instructions that access local memory can only uses addresses that
are less than or equal to the value of M0.  When M0 is uninitialized,
then we experience undefined behavior.

This patch also changes the behavior to emit S_WQM_B64 on pixel shaders
no matter what kind of DS instruction is used.

llvm-svn: 201097

This doesn't change any functionality, since we only have two shader
types (compute and pixel) that use local memory.  We're just changing
the logic to match the documentation.

llvm-svn: 201096

Thanks to Chandler for the catch.

llvm-svn: 201095

Similarly to the vshrn instructions, these are simple zext/sext + trunc
operations. Using normal LLVM IR should allow for better code, and more sharing
with the AArch64 backend.

llvm-svn: 201093

llvm-svn: 201091

For A- and R-class processors, r12 is not normally callee-saved, but is for
interrupt handlers. See AAPCS, 5.3.1.1, "Use of IP by the linker".

llvm-svn: 201089

llvm-svn: 201088

llvm-svn: 201087

vshrn is just the combination of a right shift and a truncate (and the limits
on the immediate value actually mean the signedness of the shift doesn't
matter). Using that representation allows us to get rid of an ARM-specific
intrinsic, share more code with AArch64 and hopefully get better code out of
the mid-end optimisers.

llvm-svn: 201085

llvm-svn: 201083

llvm-svn: 201081

 the addition of Mips64 tests.

No functional changes.

llvm-svn: 201080

llvm-svn: 201079

This way it's possible to share the instruction's description for LSA and
DLSA (to be added).

No functional changes.

llvm-svn: 201078

llvm-svn: 201077

The CMake install(DIRECTORY) command documents that it sets permissions
on directories it is asked to install.  Since the <prefix>/include
directory may not be exclusive to the LLVM installation, we should not
ask CMake to manage permissions of that directory for us.  Instead, give
only our own include/llvm and include/llvm-c subdirectories to the
install(DIRECTORY) command.

Fixes PR4500. Patch by Brad King.

llvm-svn: 201075

  - MODULE;SHARED;STATIC
      STATIC by default w/o BUILD_SHARED_LIBS.
      SHARED by default w/  BUILD_SHARED_LIBS.
  - OUTPUT_NAME name
      Corresponds to OUTPUT_NAME in target properties.
  - DEPENDS targets...
      Same semantics as add_dependencies().
  - LINK_COMPONENTS components...
      Same as the variable LLVM_LINK_COMPONENTS.
  - LINK_LIBS lib_targets...
      Same semantics as target_link_libraries().
  - ADDITIONAL_HEADERS (implemented in LLVMProcessSources)
      May specify header files for IDE generators.

I suggest llvm_add_library() may be used for inter-project add_library stuff
and also suggest add_***_library() may be used project-specific.

Please be patient that llvm_add_library might be ambiguous against add_llvm_library.

llvm-svn: 201072

llvm-svn: 201067

llvm-svn: 201066

Original commits messages:

Add MRMXr/MRMXm form to X86 for use by instructions which treat the 'reg' field of modrm byte as a don't care value. Will allow for simplification of disassembler code.

Simplify a bunch of code by removing the need for the x86 disassembler table builder to know about extended opcodes. The modrm forms are sufficient to convey the information.

llvm-svn: 201065

r201059 appears to cause a crash in a bootstrapped build of clang. Craig
isn't available to look at it right now, so I'm reverting it while he
investigates.

llvm-svn: 201064

I am sure it'd not be required any more.
In trunk, all of tablegen's users depend on ${TABLEGEN_OUTPUT} as not file dependency but inter-target dependency.

llvm-svn: 201063

CMake's target_link_libraries() will manage dependencies with Brad's LLVMConfig improvements.

Configuration time may be reduced by a few seconds.

llvm-svn: 201062

[AArch64]Implement the copy of two FPR8 registers by using FMOVss of two FPR32 registers in copyPhysReg.

llvm-svn: 201061

Simplify a bunch of code by removing the need for the x86 disassembler table builder to know about extended opcodes. The modrm forms are sufficient to convey the information.

llvm-svn: 201060

Add MRMXr/MRMXm form to X86 for use by instructions which treat the 'reg' field of modrm byte as a don't care value. Will allow for simplification of disassembler code.

llvm-svn: 201059

Some of the more complex directive and macro handling for GAS compatibility
requires lookahead.  Add a single token lookahead in the MCAsmLexer.

llvm-svn: 201058

You can't put a comment in the middle of a command like this. This is
invalid shell syntax and breaks the build.

llvm-svn: 201057

No functionality change.

llvm-svn: 201055

llvm-svn: 201054

Teach the Makefile build system to generate and install CMake modules
LLVMConfig.cmake and LLVMConfigVersion.cmake so that applications that
build with CMake can use 'find_package(LLVM)' even when LLVM is not
built with CMake.  These modules tell such applications about available
LLVM libraries and their dependencies.

Run llvm-config to generate the list of libraries and use the results of
llvm-build to generate the library dependencies.  Use sed to perform
substitutions in the LLVMConfig.cmake.in and LLVMConfigVersion.cmake.in
sources that our CMake build system uses.

Teach the Makefile build system to generate the LLVMExports.cmake file
with content similar to that produced by the CMake install(EXPORT)
command.  Extend llvm-build with an option to generate the library
dependencies fragment for this file.

Contributed by Brad King.

llvm-svn: 201053

Teach autoconf/configure.ac to AC_SUBST several additional values in
Makefile.config to make them available to Makefile code.  These will
be useful to generate CMake package modules from the Makefile build.

Contributed by Brad King.

llvm-svn: 201052