llvm-svn: 23840

llvm-svn: 23839

inner loop like this:

LBB_RateConvertMono8AltiVec_2:  ; no_exit
        lis r2, ha16(.CPI_RateConvertMono8AltiVec_0)
        lfs f3, lo16(.CPI_RateConvertMono8AltiVec_0)(r2)
        fmr f3, f3
        fadd f0, f2, f0
        fadd f3, f0, f3
        fcmpu cr0, f3, f1
        bge cr0, LBB_RateConvertMono8AltiVec_2  ; no_exit

to an inner loop like this:

LBB_RateConvertMono8AltiVec_1:  ; no_exit
        fsub f2, f2, f1
        fcmpu cr0, f2, f1
        fmr f0, f2
        bge cr0, LBB_RateConvertMono8AltiVec_1  ; no_exit

Doh! good catch!

llvm-svn: 23838

for some common ops and use them for a few examples.  Andrew, if you like
this, feel free to convert the rest over, if you hate it, feel free to
revert.

llvm-svn: 23837

llvm-svn: 23836

that the nodes can be folded with other nodes, and we can not duplicate
code in every backend.  Alpha will probably want this too.

llvm-svn: 23835

an upcoming optimization in the DAG Combiner.

llvm-svn: 23834

llvm-svn: 23833

still lots of uglyness.
Maybe calls will come soon.
Fixing the return value of things will be necessary to make alpha work.

llvm-svn: 23832

Regression/CodeGen/Generic/2004-02-08-UnwindSupport.llx

llvm-svn: 23831

Note that when adding new instructions that you should refer to the table at the
bottom of PPCSchedule.td.

llvm-svn: 23830

llvm-svn: 23829

Regression/Codegen/X86.

llvm-svn: 23826

doing something clever.

llvm-svn: 23824

llvm-svn: 23821

llvm-svn: 23820

write things like this:

def : Pat<(add GPRC:$in, 12),
          (ADD12 GPRC:$in)>;

Andrew: if this isn't enough or doesn't work for you, please lemme know.
llvm-svn: 23819

llvm-svn: 23818

llvm-svn: 23817

instead of a happy error message

llvm-svn: 23816

def : Pat<(trunc G8RC:$in),
          (OR8To4 G8RC:$in, X0)>;

Even though this doesn't make any sense on PPC :)

llvm-svn: 23815

llvm-svn: 23814

llvm-svn: 23813

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