boolean flag to an enum: { Fast, Standard, Strict } (default = Standard).

This option controls the creation by optimizations of fused FP ops that store
intermediate results in higher precision than IEEE allows (E.g. FMAs). The
behavior of this option is intended to match the behaviour specified by a
soon-to-be-introduced frontend flag: '-ffuse-fp-ops'.

Fast mode - allows formation of fused FP ops whenever they're profitable.

Standard mode - allow fusion only for 'blessed' FP ops. At present the only
blessed op is the fmuladd intrinsic. In the future more blessed ops may be
added.

Strict mode - allow fusion only if/when it can be proven that the excess
precision won't effect the result.

Note: This option only controls formation of fused ops by the optimizers.  Fused
operations that are explicitly requested (e.g. FMA via the llvm.fma.* intrinsic)
will always be honored, regardless of the value of this option.

Internally TargetOptions::AllowExcessFPPrecision has been replaced by
TargetOptions::AllowFPOpFusion.

llvm-svn: 158956

The existing contraction patterns are replaced with fma/fneg.
Overall functionality should be the same.

llvm-svn: 158955

sorry for the churn :S  enough for today; going to sleep.

llvm-svn: 158953

remove extractMallocCallFromBitCast, since it was tailor maded for its sole user. Update GlobalOpt accordingly.

llvm-svn: 158952

instcombine:  disable optimization of 'invoke null/undef'. I'll move this functionality to SimplifyCFG (since we cannot make changes to the CFG here).
Fixes the crashes with the attached test case

llvm-svn: 158951

llvm-svn: 158947

llvm-svn: 158946

llvm-svn: 158943

llvm-svn: 158942

llvm-svn: 158941

to be generic across architectures. It has the
following description in the gnu sources:

    Negate the immediate constant

Several Architectures such as x86 have local implementations
of operand modifier 'n' which go beyond the above description
slightly. This won't affect them.

Affected files:

    lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
        Added 'n' to the switch cases.

    test/CodeGen/Generic/asm-large-immediate.ll
        Generic compiled test (x86 for me)

    test/CodeGen/Mips/asm-large-immediate.ll
        Mips compiled version of the generic one

Contributer: Jack Carter
llvm-svn: 158939

Update comments accordingly.

Make instcombine remove useless invokes to C++'s 'new' allocation function (test attached).

llvm-svn: 158937

2. re-enable null.ll test
3. fix some minor style violations

Patch by Reed Kotler.

llvm-svn: 158935

 
Patch by Reed Kotler.

llvm-svn: 158933

Thanks to Tobias von Koch for pointing out this problem.

llvm-svn: 158932

restore support for CMake versions before 2.8.6 -- sorry for the
trouble!

llvm-svn: 158930

Thanks to Chandler for pointing out the problem.

llvm-svn: 158928

llvm-svn: 158927

to be generic across architectures. It has the
following description in the gnu sources:

    Substitute immediate value without immediate syntax

Several Architectures such as x86 have local implementations
of operand modifier 'c' which go beyond the above description
slightly. To make use of the generic modifiers without overriding
local implementation one can make a call to the base class method
for AsmPrinter::PrintAsmOperand() in the locally derived method's 
"default" case in the switch statement. That way if it is already
defined locally the generic version will never get called.

This change is needed when test/CodeGen/generic/asm-large-immediate.ll
failed on a native Mips board. The test was assuming a generic
implementation was in place.

Affected files:

    lib/Target/Mips/MipsAsmPrinter.cpp:
        Changed the default case to call the base method.
    lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
        Added 'c' to the switch cases.
    test/CodeGen/Mips/asm-large-immediate.ll
        Mips compiled version of the generic one

Contributer: Jack Carter
llvm-svn: 158925

move some typedefs so that we don't polute the llvm namespace. this should appease the GCC buildbots

llvm-svn: 158924

hopefully fix the buildbots:  some tests have wrong definitions of malloc and were crashing this code on 64 bits machines

llvm-svn: 158923

port the BoundsChecking patch to the new MemoryBuiltin API (i.e., remove most of the code from here).
Remove the alloc_size.ll test until we settle on a metadata format that makes everyone happy..

llvm-svn: 158920

 - provide more extensive set of functions to detect library allocation functions (e.g., malloc, calloc, strdup, etc)
 - provide an API to compute the size and offset of an object pointed by

Move a few clients (GVN, AA, instcombine, ...) to the new API.
This implementation is a lot more aggressive than each of the custom implementations being replaced.

Patch reviewed by Nick Lewycky and Chandler Carruth, thanks.

llvm-svn: 158919

A patch by Tom Stellard with minor changes.

llvm-svn: 158918

It passes according to ppc changes.

llvm-svn: 158917

llvm-svn: 158914

using to test the alignment support library.

Patch from Nikola on IRC.

llvm-svn: 158912

through. Also sort them.

llvm-svn: 158911

Makefiles, the CMake files in every other part of the LLVM tree, and
sanity.

This should also restore the output tree structure of all the unit
tests, sorry for breaking that, and thanks for letting me know.

The fundamental change is to put a CMakeLists.txt file in the unittest
directory, with a single test binary produced from it. This has several
advantages:

- No more weird directory stripping in the unittest macro, allowing it
  to be used more readily in other projects.
- No more directory prefixes on all the source files.
- Allows correct and precise use of LLVM's per-directory dependency
  system.
- Allows use of the checking logic for source files that have not been
  added to the CMake build. This uncovered a file being skipped with
  CMake in LLVM and one in Clang's unit tests.
- Makes Specifying conditional compilation or other custom logic for JIT
  tests easier.

It did require adding the concept of an explicit 'optional' source file
to the CMake build so that the missing-file check can skip cases where
the file is *supposed* to be missing. =]

This is another chunk of refactoring the CMake build in order to make it
usable for other clients like CompilerRT / ASan / TSan.

Note that this is interdependent with a Clang CMake change.

llvm-svn: 158909

llvm-stress: Stabalize (by using an ordered container) and add randomness to the order in which loops are generated.

llvm-svn: 158908

llvm-svn: 158904

llvm-svn: 158903

llvm-svn: 158902

llvm-svn: 158901

_umodsi3 libcalls if they have the same arguments. This optimization
was apparently broken if one of the node was replaced in place.
rdar://11714607

llvm-svn: 158900

a helper function in CMake. This will allow us to share all of this
logic with Clang, and eventually CompilerRT.

llvm-svn: 158896

llvm-svn: 158893

facilities.

This was only used in one place in LLVM, and was used pervasively (but
with different code!) in Clang. It has no advantages over the standard
CMake facilities and in some cases disadvantages.

llvm-svn: 158889

Old code would only update physreg live intervals.

llvm-svn: 158881

llvm-svn: 158880