llvm-svn: 19791

llvm-svn: 19789

llvm-svn: 19787

llvm-svn: 19786

llvm-svn: 19782

The first half of correct chain insertion for libcalls. This is not enough
to fix Fhourstones yet though.

llvm-svn: 19781

the new TLI that is available.

Implement support for handling out of range shifts.  This allows us to
compile this code (a 64-bit rotate):

unsigned long long f3(unsigned long long x) {
  return (x << 32) | (x >> (64-32));
}

into this:

f3:
        mov %EDX, DWORD PTR [%ESP + 4]
        mov %EAX, DWORD PTR [%ESP + 8]
        ret

GCC produces this:

$ gcc t.c -masm=intel -O3 -S -o - -fomit-frame-pointer
..
f3:
        push    %ebx
        mov     %ebx, DWORD PTR [%esp+12]
        mov     %ecx, DWORD PTR [%esp+8]
        mov     %eax, %ebx
        mov     %edx, %ecx
        pop     %ebx
        ret

The Simple ISEL produces (eww gross):

f3:
        sub %ESP, 4
        mov DWORD PTR [%ESP], %ESI
        mov %EDX, DWORD PTR [%ESP + 8]
        mov %ECX, DWORD PTR [%ESP + 12]
        mov %EAX, 0
        mov %ESI, 0
        or %EAX, %ECX
        or %EDX, %ESI
        mov %ESI, DWORD PTR [%ESP]
        add %ESP, 4
        ret

llvm-svn: 19780

llvm-svn: 19779

llvm-svn: 19777

llvm-svn: 19776

doesn't support certain directives and symbols on cygwin are prefixed with
an underscore. This patch makes the necessary adjustments to the output.

llvm-svn: 19775

Delete dead functions.

llvm-svn: 19771

llvm-svn: 19769

llvm-svn: 19766

llvm-svn: 19764

llvm-svn: 19763

llvm-svn: 19751

llvm-svn: 19746

This fixes the return-address-not-being-saved problem in the Alpha backend.

llvm-svn: 19741

llvm-svn: 19739

llvm-svn: 19738

llvm-svn: 19737

llvm-svn: 19736

llvm-svn: 19735

as long as they are the same size.

llvm-svn: 19734

llvm-svn: 19733

llvm-svn: 19731

since we are dirty, special case __main.  This should fix the infinite loop
horrible stuff that happens on linux-alpha when configuring llvm-gcc.  It
might also help cygwin, who knows??

llvm-svn: 19729

llvm-svn: 19728

llvm-svn: 19727

operations for 64-bit integers.

llvm-svn: 19724

llvm-svn: 19721

fixes most of the remaining llc-beta failures.

llvm-svn: 19716

llvm-svn: 19715

llvm-svn: 19714

llvm-svn: 19712

llvm-svn: 19711

llvm-svn: 19707

The second folds operations into selects, e.g. (select C, (X+Y), (Y+Z))
-> (Y+(select C, X, Z)

This occurs a few times across spec, e.g.

         select    add/sub
mesa:    83        0
povray:  5         2
gcc      4         2
parser   0         22
perlbmk  13        30
twolf    0         3

llvm-svn: 19706

llvm-svn: 19704