[Bug target/35601] New: __m64 can't be initialized with 64bit constant

[hjl dot tools at gmail dot com]

[hjl@gnu-6 tmp]$ cat x.c
typedef int __m64 __attribute__ ((__vector_size__ (8), __may_alias__));

__m64 upper = {0x7eff7eff7eff7eff};
[hjl@gnu-6 tmp]$ /usr/gcc-4.4/bin/gcc -S x.c
x.c:3: warning: overflow in implicit constant conversion
[hjl@gnu-6 tmp]$ cat y.c
typedef long long __m64 __attribute__ ((__vector_size__ (8), __may_alias__));

__m64 upper = {0x7eff7eff7eff7eff};
[hjl@gnu-6 tmp]$ /usr/gcc-4.4/bin/gcc -S y.c
[hjl@gnu-6 tmp]$

In both cases, __m64 has the same size. Why doesn't

typedef int __m64 __attribute__ ((__vector_size__ (8), __may_alias__));

take 64bit constant?


-- 
           Summary: __m64 can't be initialized with 64bit constant
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com
GCC target triplet: x86_64-unknown-linux-gnu i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35601