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Internally TargetOptions::AllowExcessFPPrecision has been replaced by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

llvm-svn: 158954

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: 158950

Revert "If an object (such as a std::string) with an appropriate c_str() member function"

This reverts commit 7d96f6106bfbd85b1af06f34fdbf2834aad0e47e.

llvm-svn: 158949

llvm-svn: 158947

llvm-svn: 158946

llvm-svn: 158945

llvm-svn: 158944

llvm-svn: 158943

llvm-svn: 158942

llvm-svn: 158941

Handle include directive with comments.  It turns out that in this case comments are not coming in source order.  Instead of trying to std::sort() comments (which can be costly), just remove comments that are not in order.

llvm-svn: 158940

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

then it should get the same warnings that id->isa gets. // rdar://11702488

llvm-svn: 158938

Update comments accordingly.

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

llvm-svn: 158937

llvm-svn: 158936

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

Patch by Reed Kotler.

llvm-svn: 158935

CallGraph's recursive visitor only needs to collect declarations; their
bodies will be processed later on. RecursiveASTVisitor will recurse on
the bodies if the definition is provided along with declaration.
Optimize, by not recursing on any of the statements.

llvm-svn: 158934

 
Patch by Reed Kotler.

llvm-svn: 158933

Thanks to Tobias von Koch for pointing out this problem.

llvm-svn: 158932

This now correctly covers, I believe, all the pointer types:
* 'any' pointers (both function and data normal pointers and ObjC object pointers)
* member pointers (both function and data)
* block pointers

llvm-svn: 158931

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

llvm-svn: 158930

method declarations.
// rdar://11578353.

llvm-svn: 158929

Thanks to Chandler for pointing out the problem.

llvm-svn: 158928

llvm-svn: 158927

TargetSimulatroVersionFromDefines if present;  this also makes
it easier to chain things correctly.  Noted by an internal
review.

llvm-svn: 158926

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

llvm-svn: 158922

llvm-svn: 158921

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: 158916