This compiles bitcast.ll:test3/test4 into:

_test3:
        movd %xmm0, %eax
        ret
_test4:
        movd %edi, %xmm0
        ret

llvm-svn: 32230

llvm-svn: 32229

This could be better, readme entry pending.

llvm-svn: 32228

llvm-svn: 32223

llvm-svn: 32220

llvm-svn: 32218

immediate in small code model. The JIT cannot ensure GV's are placed in the
lower 4G.
- Some preliminary support for large code model.

llvm-svn: 32215

llvm-svn: 32214

This fixes PR1029 and Regression/CodeGen/X86/x86-64-asm.ll

llvm-svn: 32206

llvm-svn: 32184

llvm-svn: 32098

convertToThreeAddress() is now responsible for updating live info as well as inserting the new MI's.

llvm-svn: 32097

llvm-svn: 32091

llvm-svn: 32071

A initialized global variable cannot be extern weak. However, if a global value's initializer is itself a external weak symbol, emit the weak reference.

llvm-svn: 32069

llvm-svn: 32067

llvm-svn: 32066

llvm-svn: 32065

llvm-svn: 32052

llvm-svn: 32048

- Proper support for both small static and PIC modes under X86-64
- Some (non-optimal) support for medium modes.

llvm-svn: 32046

llvm-svn: 32034

llvm-svn: 32028

llvm-svn: 32027

llvm-svn: 32026

llvm-svn: 32017

llvm-svn: 32004

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

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

llvm-svn: 31999

llvm-svn: 31980

llvm-svn: 31976

llvm-svn: 31973

llvm-svn: 31952

of opcode and number of operands.

llvm-svn: 31947

llvm-svn: 31887

features autodetected.  This fixes PR1010 and Regression/CodeGen/X86/xmm-r64.ll
on non-x86-64 hosts.

llvm-svn: 31879

llvm-svn: 31874

clearing the upper 8-bits instead of issuing two instructions. This also
eliminates the need to target the AH register which can be problematic on
x86-64.

llvm-svn: 31832

llvm-svn: 31830

llvm-svn: 31813