llvm-svn: 19810

llvm-svn: 19809

llvm-svn: 19808

labels) even though they are concrete.  This fixes the DSA regressions from
last night.

llvm-svn: 19807

large nested types over and over again to determine if they are sized or not.
Now, isSized() is able to make snap decisions about all concrete types, which
are a common occurance (and includes all primitives).

On 177.mesa, this speeds up DSE from 39.5s -> 21.3s and GCSE from
13.2s -> 11.3s, reducing gccas time from 80s -> 61s (this is a debug build).

DSE and GCSE are still too slow on this testcase, but this is a simple
improvement.

llvm-svn: 19800

llvm-svn: 19799

llvm-svn: 19798

llvm-svn: 19797

all.  This should speed up the X86 backend fairly significantly on integer
codes.  Now if only we didn't have to compute livevar still... ;-)

llvm-svn: 19796

registers.  This information is computed directly by the register allocator
now.

llvm-svn: 19795

llvm-svn: 19794

llvm-svn: 19793

llvm-svn: 19792

llvm-svn: 19791

llvm-svn: 19789

it.

llvm-svn: 19788

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: 19778

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

llvm-svn: 19774

llvm-svn: 19773

llvm-svn: 19772

Delete dead functions.

llvm-svn: 19771

Also, make DiffFilesWithTolerance take sys::Path objects instead of std::strings.

llvm-svn: 19770

llvm-svn: 19769

llvm-svn: 19768

used by other tools.

llvm-svn: 19767

llvm-svn: 19766

llvm-svn: 19765

llvm-svn: 19764

llvm-svn: 19763

won't be propagated to the configure script until there's a need to change
configure.ac for some larger purpose.

llvm-svn: 19762

llvm-svn: 19761