llvm-svn: 32016

llvm-svn: 32015

llvm-svn: 32014

llvm-svn: 32013

llvm-svn: 32012

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

as an idiom for bswap.

llvm-svn: 32011

llvm-svn: 32010

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

llvm-svn: 32009

llvm-svn: 32008

llvm-svn: 32007

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

llvm-svn: 32006

llvm-svn: 32005

llvm-svn: 32004

llvm-svn: 32003

llvm-svn: 32002

xchgl %eax, %edx) to llvm.bswap.i64.  This compiles:

long long test2(long long A) {
  return _OSSwapInt64(A);
}

to:

_test2:
        movl 8(%esp), %eax
        movl 4(%esp), %edx
        bswapl %eax
        bswapl %edx
        ret

instead of:

_test2:
        movl 8(%esp), %edx
        movl 4(%esp), %eax
        bswap   %eax
        bswap   %edx
        xchgl   %eax, %edx
        ret

GCC manages (with -fomit-frame-pointer) the uglier:

_test2:
        subl    $4, %esp
        movl    8(%esp), %eax
        movl    12(%esp), %edx
        bswap   %eax
        bswap   %edx
        xchgl   %eax, %edx
        addl    $4, %esp
        ret

llvm-svn: 32001

llvm-svn: 32000

JIT on darwin/x86, which has htonl implemented as inline asm.

llvm-svn: 31999

llvm-svn: 31998

when they want to.

llvm-svn: 31997

llvm-svn: 31996

llvm-svn: 31992

adding a temporary wrapper around the ostream to make it friendly to
functions expecting an LLVM stream. This should be fixed in the future.

llvm-svn: 31990

llvm-svn: 31989

llvm-svn: 31988

llvm-svn: 31987

llvm-svn: 31986

llvm-svn: 31985

llvm-svn: 31984

llvm streams

llvm-svn: 31983

llvm-svn: 31982

llvm-svn: 31981

llvm-svn: 31980

llvm-svn: 31979

llvm-svn: 31978

llvm-svn: 31977

llvm-svn: 31976

llvm-svn: 31975

llvm-svn: 31974

llvm-svn: 31973