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[Bug target/46144] [4.6 regression] gfortran.dg/vect/fast-math-vect-8.f90


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46144

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-23 15:25:39 UTC ---
This may also break 200.sixtrack in SPEC CPU 2000:

gfortran -c -o postpr.o   -DSPEC_CPU2000_LP64         -O3 -funroll-loops
-ffast-math   postpr.f
postpr.f: In function 'postpr':
postpr.f:1837:0: error: insn does not satisfy its constraints:
(insn 14650 4412 4415 104 (set (reg:V2DF 23 xmm2 [6625])
        (and:V2DF (mem/c:V2DF (const:DI (plus:DI (symbol_ref:DI ("t.1832")
[flags 0x2] <var_decl 0x7ffff673c8c0 t>)
                        (const_int 272 [0x110]))) [2 MEM[(real(kind=8)[36] *)&t
+ 272B]+0 S16 A128])
            (reg:V2DF 23 xmm2 [6605]))) postpr.f:471 1266 {*andv2df3}
     (nil))
postpr.f:1837:0: internal compiler error: in build_def_use, at regrename.c:1126
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


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