internal compiler error: in reload_cse_simplify_operands, at postreload.c:402

[Khem Raj]

compiling glibc 2.13 with gcc 4.5 using -march=armv7-a -mfloat-abi=softfp -O2 the attached testcase ends up in gcc ICE

../sysdeps/ieee754/dbl-64/mpatan.c: In function ‘__mpatan’:
../sysdeps/ieee754/dbl-64/mpatan.c:102:1: error: insn does not satisfy its constraints:
(insn 93 626 614 6 ../sysdeps/ieee754/dbl-64/mpatan.c:61 (set (mem/c/i:DF (plus:SI (reg:SI 12 ip)
                (const_int 904 [0x388])) [0 dx+0 S8 A64])
        (reg:DF 2 r2)) 642 {*movdf_vfp} (nil))
../sysdeps/ieee754/dbl-64/mpatan.c:102:1: internal compiler error: in reload_cse_simplify_operands, at postreload.c:402
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

This is caused by r99524

[Ramana Radhakrishnan (ramana)]

Probably a dup of #815435.

Ramana

[Khem Raj (khem-raj)]

yes likely.

[Ramana Radhakrishnan (ramana)]

can you check if the fix for lp:815435 fixes your issue.

thanks,
Ramana

[Khem Raj (khem-raj)]

Yes the fix for lp:815435 fixes my testcase as well.