Treat TargetGlobalAddress as a constant for the purpose of matching pre-inc stores on PPC.

Thanks to Tobias von Koch for pointing out this problem.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158932 91177308-0d34-0410-b5e6-96231b3b80d8
Add Mips to the list of target architectures for the MCJIT tests.
 
Patch by Reed Kotler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158933 91177308-0d34-0410-b5e6-96231b3b80d8
1. fix null program output after some other changes
2. re-enable null.ll test
3. fix some minor style violations

Patch by Reed Kotler.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158935 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for invoke to the MemoryBuiltin analysid.
Update comments accordingly.

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158937 91177308-0d34-0410-b5e6-96231b3b80d8
The inline asm operand modifier 'n' is suppose 
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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158939 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/unittests/VMCore/CMakeLists.txt: Introduce LLVM_OPTIONAL_SOURCES here, too.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158941 91177308-0d34-0410-b5e6-96231b3b80d8
llvm/unittests: Simplify LINK_COMPONENTS.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158942 91177308-0d34-0410-b5e6-96231b3b80d8
Remove trailing whitespaces

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158943 91177308-0d34-0410-b5e6-96231b3b80d8
Look pass zext to strength reduce an udiv. Patch by David Majnemer. rdar://11721329

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158946 91177308-0d34-0410-b5e6-96231b3b80d8
[docs] Sphinxify GettingStartedVS. Patch by Mikael Lyngvig!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158947 91177308-0d34-0410-b5e6-96231b3b80d8
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158951 91177308-0d34-0410-b5e6-96231b3b80d8
remove extractMallocCallFromBitCast, since it was tailor maded for its sole user. Update GlobalOpt accordingly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158952 91177308-0d34-0410-b5e6-96231b3b80d8
fix whitespace in my last commit.
sorry for the churn :S  enough for today; going to sleep.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158953 91177308-0d34-0410-b5e6-96231b3b80d8
Convert the PPC backend to use the new FMA infrastructure.

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158955 91177308-0d34-0410-b5e6-96231b3b80d8
Rename -allow-excess-fp-precision flag to -fuse-fp-ops, and switch from a
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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158956 91177308-0d34-0410-b5e6-96231b3b80d8
Emit relocations for DW_AT_location entries on systems which need it. This is
a recommit of r127757. Fixes PR9493. Patch by Paul Robinson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158957 91177308-0d34-0410-b5e6-96231b3b80d8
ARM scheduling fix: compute predicated implicit use properly.

Minor drive by fix to cleanup latency computation. Calling
getOperandLatency with a deliberately incorrect operand index does not
give you the latency you want.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158959 91177308-0d34-0410-b5e6-96231b3b80d8
ARM scheduling fix: don't guess at implicit operand latency.

This is a minor drive-by fix with no robust way to unit test.
As an example see neon-div.ll:
SU(16):   %Q8<def> = VMOVLsv4i32 %D17, pred:14, pred:%noreg, %Q8<imp-use,kill>
 val SU(1): Latency=2 Reg=%Q8
...should be latency=1

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158960 91177308-0d34-0410-b5e6-96231b3b80d8
Functions calling __builtin_eh_return must have a frame pointer.

The code in X86TargetLowering::LowerEH_RETURN() assumes that a frame
pointer exists, but the frame pointer was forced by the presence of
llvm.eh.unwind.init which isn't guaranteed.

If llvm.eh.unwind.init is actually required in functions calling
eh.return (is it?), we should diagnose that instead of emitting bad
machine code.

This should fix the dragonegg-x86_64-linux-gcc-4.6-test bot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158961 91177308-0d34-0410-b5e6-96231b3b80d8
Use "NoItineraries" for processors with no itineraries.

This makes it explicit when ScoreboardHazardRecognizer will be used.
"GenericItineraries" would only make sense if it contained real
itinerary values and still required ScoreboardHazardRecognizer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158963 91177308-0d34-0410-b5e6-96231b3b80d8