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Re: target/10077: gcc -msse2 generates movd to move dwords between xmm regs
- From: bangerth at dealii dot org
- To: douze at enseeiht dot fr, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, hubicka at gcc dot gnu dot org
- Date: 14 Mar 2003 15:12:08 -0000
- Subject: Re: target/10077: gcc -msse2 generates movd to move dwords between xmm regs
- Reply-to: bangerth at dealii dot org, douze at enseeiht dot fr, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, hubicka at gcc dot gnu dot org, gcc-gnats at gcc dot gnu dot org
Synopsis: gcc -msse2 generates movd to move dwords between xmm regs
State-Changed-From-To: open->analyzed
State-Changed-By: bangerth
State-Changed-When: Fri Mar 14 15:12:08 2003
State-Changed-Why:
I can confirm this: it leads to an assembler error with
3.2.2 and 3.3, but not with 3.4:
g/x> /home/bangerth/bin/gcc-3.3-pre/bin/gcc -c gcc_bug.i -msse2 -O3
/tmp/ccn5g6XV.s: Assembler messages:
/tmp/ccn5g6XV.s:127: Error: suffix or operands invalid for `movd'
I leave it to others to find out where this problem comes
from. Since mainline compiles and assembles this file
just fine, this seems indeed like a problem in the compiler.
The instruction in question is this one:
movd %xmm7, %xmm3
W.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=10077