llvm-svn: 66780

related transformations out of target-specific dag combine into the
ARM backend.  These were added by Evan in r37685 with no testcases
and only seems to help ARM (e.g. test/CodeGen/ARM/select_xform.ll).

Add some simple X86-specific (for now) DAG combines that turn things
like cond ? 8 : 0  -> (zext(cond) << 3).  This happens frequently
with the recently added cp constant select optimization, but is a
very general xform.  For example, we now compile the second example
in const-select.ll to:

_test:
        movsd   LCPI2_0, %xmm0
        ucomisd 8(%esp), %xmm0
        seta    %al
        movzbl  %al, %eax
        movl    4(%esp), %ecx
        movsbl  (%ecx,%eax,4), %eax
        ret

instead of:

_test:
        movl    4(%esp), %eax
        leal    4(%eax), %ecx
        movsd   LCPI2_0, %xmm0
        ucomisd 8(%esp), %xmm0
        cmovbe  %eax, %ecx
        movsbl  (%ecx), %eax
        ret

This passes multisource and dejagnu.

llvm-svn: 66779

llvm-svn: 66778

Enable Chris' value propagation change. It make available known sign, zero, one bits information for values that are live out of basic blocks. The goal is to eliminate unnecessary sext, zext, truncate of values that are live-in to blocks. This does not handle PHI nodes yet.

llvm-svn: 66777

On x86, if the only use of a i64 load is a i64 store, generate a pair of double load and store instead.

llvm-svn: 66776

llvm-svn: 66775

llvm-svn: 66774

llvm-svn: 66773

llvm-svn: 66772

llvm-svn: 66770

understands.

llvm-svn: 66769

llvm-svn: 66768

 - Use OPT_ prefix for ids.

 - Reference groups and aliases by shortend id (on the theory that
   this is more readable).

 - Rename the special option ids to more protected names.

llvm-svn: 66767

llvm-svn: 66766

Remove the explicit if OS = Darwin test around the setting of -m32/-m64.

llvm-svn: 66765

-fblocks, and there were some duplicate options scattered in.

llvm-svn: 66764

llvm-svn: 66763

 - Mike, please verify.

llvm-svn: 66762

Banksel optimization is now based on the section names of symbols, since the symbols in one section will always be put into one bank.

llvm-svn: 66761

llvm-svn: 66760

llvm-svn: 66759

argument matching some Option::ID.

llvm-svn: 66758

identifier; we will want to use the latter in situations where we just
want to check for a match, but not load options unnecessarily.

llvm-svn: 66757

(will be used to emit "command line argument unused" diagnostics).

llvm-svn: 66756

llvm-svn: 66751

llvm-svn: 66750

from a switch table.  Multiple table entries that
branch to the same place were being sorted by the
pointer value of the ConstantInt*; changed to sort
by the actual value of the ConstantInt.

llvm-svn: 66749

llvm-svn: 66746

llvm-svn: 66742

should fix the largest problem in <rdar://problem/6669847>.

llvm-svn: 66741

class members to the corresponding in-class declaration.

Diagnose the erroneous use of 'static' on out-of-line definitions of
class members. 

llvm-svn: 66740

llvm-svn: 66739

llvm-svn: 66738

clang as the preprocessor even when it should.

llvm-svn: 66737

llvm-svn: 66736

assembly text output uses an indirect call ("call *") instead of a direct call.

llvm-svn: 66735

Move most of the checking from ActOnCXXMemberDeclarator to other, more general routines. This is a step toward separating the checking logic from Declarators, which in turn is required for template instantiation.

llvm-svn: 66734

llvm-svn: 66733

llvm-svn: 66732

llvm-svn: 66725