[Bug target/33369] [4.3 Regression] suffix or operands invalid for `pslld'

["ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #3 from ubizjak at gmail dot com  2007-09-10 06:32 -------
A 64-bit compiler is required. The problem is, that gcc creates a vector shift
constant for vector shift instruction, without checking if optab can take
vector argument.

This one will also create wrong operand for x86_64:

--cut here--
typedef struct tagPOINT
{
  int x;
  int y;
} POINT;

void
f (POINT * ptBuf)
{
  int i;
  for (i = 0; i < 4; i++)
    {
      ptBuf[i].x = ((ptBuf[i].x) << 4);
      ptBuf[i].y = ((ptBuf[i].y) << 4);
    }
}
--cut here--

When compiling with 32bit compiler, the shift argument is pushed into memory,
but resulting code is still wrong:

        movdqu  (%edx), %xmm0
        movdqa  .LC0, %xmm1
        pslld   %xmm1, %xmm0
        movdqa  %xmm0, (%edx)
        movdqu  16(%edx), %xmm0
        pslld   %xmm1, %xmm0
        movdqa  %xmm0, 16(%edx)

where

.LC0:
        .long   4
        .long   4
        .long   4
        .long   4

This problem is similar or the same as PR22480.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |22480


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33369