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[Bug tree-optimization/31667] New: Integer externsions aren't vectorized
- From: "hjl at lucon dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 23 Apr 2007 14:27:25 -0000
- Subject: [Bug tree-optimization/31667] New: Integer externsions aren't vectorized
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
SSE4.1 has pmovzx and pmovsx. For code like:
[hjl@gnu-2 vect]$ cat pmovzxbw.c
typedef unsigned char vec_t;
typedef unsigned short vecx_t;
extern __attribute__((aligned(16))) vec_t x [64];
extern __attribute__((aligned(16))) vecx_t y [64];
void
foo ()
{
int i;
for (i = 0; i < 64; i++)
y [i] = x [i];
}
Icc generates
pmovzxbw x(%rip), %xmm0 #13.14
pmovzxbw 8+x(%rip), %xmm1 #13.14
pmovzxbw 16+x(%rip), %xmm2 #13.14
pmovzxbw 24+x(%rip), %xmm3 #13.14
pmovzxbw 32+x(%rip), %xmm4 #13.14
pmovzxbw 40+x(%rip), %xmm5 #13.14
pmovzxbw 48+x(%rip), %xmm6 #13.14
pmovzxbw 56+x(%rip), %xmm7 #13.14
movdqa %xmm0, y(%rip) #13.5
movdqa %xmm1, 16+y(%rip) #13.5
movdqa %xmm2, 32+y(%rip) #13.5
movdqa %xmm3, 48+y(%rip) #13.5
movdqa %xmm4, 64+y(%rip) #13.5
movdqa %xmm5, 80+y(%rip) #13.5
movdqa %xmm6, 96+y(%rip) #13.5
movdqa %xmm7, 112+y(%rip) #13.5
ret #14.1
--
Summary: Integer externsions aren't vectorized
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hjl at lucon dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31667