getelementptr-seteq.ll into:

define i1 @test(i64 %X, %S* %P) {
	%C = icmp eq i64 %X, -1		; <i1> [#uses=1]
	ret i1 %C
}

instead of:

define i1 @test(i64 %X, %S* %P) {
	%A.idx.mask = and i64 %X, 4611686018427387903		; <i64> [#uses=1]
	%C = icmp eq i64 %A.idx.mask, 4611686018427387903		; <i1> [#uses=1]
	ret i1 %C
}

And fixes the second half of PR2235.  This speeds up the insertion sort
case by 45%, from 1.12s to 0.77s.  In practice, this will significantly
speed up for loops structured like:

for (double *P = Base + N; P != Base; --P)
  ...

Which happens frequently for C++ iterators.

llvm-svn: 50079

llvm-svn: 50078

argument. The x86-64 ABI requires the incoming value of %rdi to
be copied to %rax on exit from a function that is returning a
large C struct.

Also, add a README-X86-64 entry detailing the missed optimization
opportunity and proposing an alternative approach.

llvm-svn: 50075

derived class.

llvm-svn: 50074

llvm-svn: 50073

llvm-svn: 50072

llvm-svn: 50071

llvm-svn: 50066

ivar of same name. 
Better diagnostics to bring home this point.

llvm-svn: 50065

fix some residual old API that fell thru the cracks of the conversion script, closes http://llvm.org/bugs/show_bug.cgi?id=2246

llvm-svn: 50062

More property semantics checking.
First test case for ObjC2's property implementation.

llvm-svn: 50057

llvm-svn: 50056

llvm-svn: 50055

empty ScheduleDAG.

llvm-svn: 50054

llvm-svn: 50053

llvm-svn: 50051

Added iterators, methods to find property and categories.
Use them in doing semantic analysis on property implementation
declarations. Fixed typos.

llvm-svn: 50050

llvm-svn: 50049

llvm-svn: 50047

are returned by struct return.

llvm-svn: 50038

by struct return.

llvm-svn: 50037

llvm-svn: 50036

llvm-svn: 50035

and simplify code that was fallout from the separation of memcpyopt and gvn.

llvm-svn: 50034

warning.

llvm-svn: 50033

llvm-svn: 50032

llvm-svn: 50031

llvm-svn: 50029

llvm-svn: 50028

llvm-svn: 50027

and can significantly shrinkify some code, particularly from C++ land.

llvm-svn: 50025

lost newlines between blocks.

llvm-svn: 50024

fixes a crash in opt on 433.milc.

llvm-svn: 50023

llvm-svn: 50022

llvm-svn: 50021

as a global helper function.  At the same type, switch it from taking
a vector of predecessors to an arbitrary sequential input.  This allows
us to switch LoopSimplify to use a SmallVector for various temporary
vectors that it passed into SplitBlockPredecessors.

llvm-svn: 50020

nodes, removing a hack.

llvm-svn: 50019

instead of doing it after every call.

llvm-svn: 50018

llvm-svn: 50016

llvm-svn: 50015