Jonas Maebe wrote:
On 26 Aug 2011, at 22:42, Mark Morgan Lloyd wrote:Using 2.4.4 with -a -al -s this compiles to a .s which looks like this: .Ll34: # [439] IF z < 2299161.0 THEN ld [%i6-32],%o0 ld [%i6-28],%o1 call fpc_int64_to_double nop sethi %hi(_$MOONPHASE$_Ld8),%o0 ld [%lo(_$MOONPHASE$_Ld8)+%o0],%f1 fcmpd %f0,%f1 nop fbl .Lj87 nop ba .Lj88 nop .Lj87: .stabn 68,0,441,.Ll35 - MOONPHASE_JYEAR$DOUBLE$INT64$INT64$DOUBLE .Ll35: # [441] a:= z This appears to be the only place in the program where fcmpd %f0,%f1 is generated, although the same opcode is generated with other registers as opeands. Assembling with as (2.17 or 2.18), I get this error: moonphase.s:629: Error: Illegal operandsThe sparc only has single precision floating point registers. Double precision values are stored in two consecutive single precision registers, and hence arguments to double precision opcodes must always be even registers. The above demonstrates a bug in the register allocator. Please file a bug report.
Submitted as 20072 -- Mark Morgan Lloyd markMLl .AT. telemetry.co .DOT. uk [Opinions above are the author's, not those of his employers or colleagues] _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
