llvm-svn: 23812

llvm-svn: 23811

patterns.  Certainly a logical request.

llvm-svn: 23810

code for long long foo(long long a, long long b) { return a + b; }

_foo:
        or r2, r3, r3
        or r3, r4, r4
        or r4, r5, r5
        or r5, r6, r6
        rldicr r2, r2, 32, 31
        rldicl r3, r3, 0, 32
        rldicr r4, r4, 32, 31
        rldicl r5, r5, 0, 32
        or r2, r3, r2
        or r3, r5, r4
        add r4, r3, r2
        rldicl r2, r4, 32, 32
        or r4, r4, r4
        or r3, r2, r2
        blr

llvm-svn: 23809

llvm-svn: 23806

llvm-svn: 23805

the pair of elements is a legal type.

llvm-svn: 23804

will have to tide us over until we get real subreg support, but it prevents
the PrologEpilogInserter from spilling 8 byte GPRs on a G4 processor.

Add some initial support for TRUNCATE and ANY_EXTEND, but they don't
currently work due to issues with ScheduleDAG.  Something wll have to be
figured out.

llvm-svn: 23803

allows us to lower legal return types to something else, to meet ABI
requirements (such as that i64 be returned in two i32 regs on Darwin/ppc).

llvm-svn: 23802

sized stack object if either the array size or the type size is zero.

llvm-svn: 23801

llvm-svn: 23798

llvm-svn: 23797

llvm-svn: 23790

llvm-svn: 23789

llvm-svn: 23788

llvm-svn: 23787

llvm-svn: 23786

llvm-svn: 23785

llvm-svn: 23784

all but main.  If it's not set, we can still internalize, but only if an
explicit symbol list is provided.

llvm-svn: 23783

llvm-svn: 23782

a lot throughout many programs.  In particular, specfp triggers it a bunch for
constant FP nodes when you have code like  cond ? 1.0 : -1.0.

If the PPC ISel exposed the loads implicit in pic references to external globals,
we would be able to eliminate a load in cases like this as well:

%X = external global int
%Y = external global int
int* %test4(bool %C) {
        %G = select bool %C, int* %X, int* %Y
        ret int* %G
}

Note that this breaks things that use SrcValue's (see the fixme), but since nothing
uses them yet, this is ok.

Also, simplify some code to use hasOneUse() on an SDOperand instead of hasNUsesOfValue directly.

llvm-svn: 23781

llvm-svn: 23780

option.  Currently the only way to enable this is to specify the
64bitregs mattr flag.  It is never enabled by default on any config yet.

llvm-svn: 23779

purely mechanical.

llvm-svn: 23778

llvm-svn: 23777

llvm-svn: 23776

This allows the test to work when srcdir != objdir.

llvm-svn: 23775

llvm-svn: 23774

llvm-svn: 23773

llvm-svn: 23772

llvm-svn: 23771

llvm-svn: 23770

llvm-svn: 23769

llvm-svn: 23768

llvm-svn: 23767

llvm-svn: 23766

llvm-svn: 23765

llvm-svn: 23764

llvm-svn: 23763