now cerr, cout, and NullStream resp.

llvm-svn: 32298

llvm-svn: 32288

is 'unsigned'.

llvm-svn: 32279

7.48s.  This regression is due to unforseen consequences of the cast patch.

llvm-svn: 32209

llvm-svn: 32166

Transforms/InstCombine/2006-12-01-BadFPVectorXform.ll

llvm-svn: 32112

llvm-svn: 32051

unsigned short swp(unsigned short a) {
       return ((a & 0xff00) >> 8 | (a & 0x00ff) << 8);
}

as an idiom for bswap.

llvm-svn: 32011

This implements InstCombine/cast.ll:test34.  It fires hundreds of times on
176.gcc.

llvm-svn: 32009

folding   seteq (bswap(x)), c -> seteq(x,bswap(c))

llvm-svn: 32006

llvm-svn: 31996

llvm-svn: 31977

producing code for "trunc to bool". This passes all tests on Linux.

llvm-svn: 31963

llvm-svn: 31941

The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931

llvm-svn: 31923

llvm-svn: 31889

llvm-svn: 31751

(X >> Z) op (Y >> Z)  -> (X op Y) >> Z

for all shifts and all ops={and/or/xor}.

llvm-svn: 31729

typedef struct { unsigned prefix : 4; unsigned code : 4; unsigned unsigned_p : 4; } tree_common;
int foo(tree_common *a, tree_common *b) { return a->code == b->code; }

into:

_foo:
        movl 4(%esp), %eax
        movl 8(%esp), %ecx
        movl (%eax), %eax
        xorl (%ecx), %eax
        # TRUNCATE movb %al, %al
        shrb $4, %al
        testb %al, %al
        sete %al
        movzbl %al, %eax
        ret

instead of:

_foo:
        movl 8(%esp), %eax
        movb (%eax), %al
        shrb $4, %al
        movl 4(%esp), %ecx
        movb (%ecx), %cl
        shrb $4, %cl
        cmpb %al, %cl
        sete %al
        movzbl %al, %eax
        ret

saving one cycle by eliminating a shift.

llvm-svn: 31727

by the shr -> [al]shr patch.  This was reduced from 176.gcc.

llvm-svn: 31653

add.ll:test33, add.ll:test34, shift-sra.ll:test2

llvm-svn: 31586

case that it bad to do.

llvm-svn: 31563

delete in the first place.  This also makes it simpler.

llvm-svn: 31562

loops.

llvm-svn: 31560

This patch converts the old SHR instruction into two instructions,
AShr (Arithmetic) and LShr (Logical). The Shr instructions now are not
dependent on the sign of their operands.

llvm-svn: 31542

llvm-svn: 31431

Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.

llvm-svn: 31380

Replace the REM instruction with UREM, SREM and FREM.

llvm-svn: 31369

llvm-svn: 31346

result.  This can significantly shrink code and exposes identities more
aggressively.

llvm-svn: 31344

llvm-svn: 31342

This triggers thousands of times on multisource.

llvm-svn: 31341

   InsertNewInstBefore(new CastInst(Val, ValTy, Val->GetName()), I)
into:
   InsertCastBefore(Val, ValTy, I)

llvm-svn: 31204

Make necessary changes to support DIV -> [SUF]Div. This changes llvm to
have three division instructions: signed, unsigned, floating point. The
bytecode and assembler are bacwards compatible, however.

llvm-svn: 31195

but apparently didn't make it into the final patch.

llvm-svn: 31070

This patch implements the first increment for the Signless Types feature.
All changes pertain to removing the ConstantSInt and ConstantUInt classes
in favor of just using ConstantInt.

llvm-svn: 31063

llvm-svn: 31062

and destination sign may not match but other conditions are met.

llvm-svn: 31056

llvm-svn: 31055