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other/10899: "Illegal Instruction" when using PMULUDQ in asm
- From: zimbricchio at libero dot it
- To: gcc-gnats at gcc dot gnu dot org
- Date: 21 May 2003 09:55:13 -0000
- Subject: other/10899: "Illegal Instruction" when using PMULUDQ in asm
- Reply-to: zimbricchio at libero dot it
>Number: 10899
>Category: other
>Synopsis: "Illegal Instruction" when using PMULUDQ in asm
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: wrong-code
>Submitter-Id: net
>Arrival-Date: Wed May 21 10:06:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator: zimbricchio
>Release: gcc version 3.2.3
>Organization:
>Environment:
AMD Athlon XP 2000+
>Description:
"Illegal Instruction" when running c-code with a PMULUDQ asm instuction:
void main(void)
{ asm ( "pmuludq %%mm0, %%mm1 \n\t" : ); }
>How-To-Repeat:
void main(void)
{ asm ( "pmuludq %%mm0, %%mm1 \n\t" : ); }
>Fix:
not using mmx instructions :.(
>Release-Note:
>Audit-Trail:
>Unformatted: