[Bug bootstrap/48371] [4.7 Regression] bootstrap failure

["hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48371

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2011-03-30 19:38:24 UTC ---
Created attachment 23822
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23822
A testcase

[hjl@gnu-34 delta]$ /export/regression/rrs/171731/usr/bin/gcc  -S -m32 -msse2
-mfpmath=sse -fpic -O2 testcase.c
testcase.c: In function â__signbitfâ:
testcase.c:11:1: warning: excess elements in union initializer [enabled by
default]
testcase.c:11:1: warning: (near initialization for â__uâ) [enabled by default]
testcase.c: In function â__signbitâ:
testcase.c:17:1: warning: excess elements in union initializer [enabled by
default]
testcase.c:17:1: warning: (near initialization for â__uâ) [enabled by default]
testcase.c: At top level:
testcase.c:65:4: warning: excess elements in struct initializer [enabled by
default]
testcase.c:65:4: warning: (near initialization for âfloatformat_ieee_half_bigâ)
[enabled by default]
testcase.c:65:4: warning: excess elements in struct initializer [enabled by
default]
testcase.c:65:4: warning: (near initialization for âfloatformat_ieee_half_bigâ)
[enabled by default]
testcase.c:65:4: warning: excess elements in struct initializer [enabled by
default]
testcase.c:65:4: warning: (near initialization for âfloatformat_ieee_half_bigâ)
[enabled by default]
testcase.c: In function âfloatformat_from_doubleâ:
testcase.c:129:2: error: insn does not satisfy its constraints:
(insn 36 34 98 4 (parallel [
            (set (reg:SI 21 xmm0)
                (unsigned_fix:SI (reg/v:DF 22 xmm1 [orig:67 mant ] [67])))
            (use (reg:V2DF 91))
            (clobber (reg:V2DF 23 xmm2))
            (clobber (reg:V2DF 24 xmm3))
        ]) testcase.c:123 153 {*fixuns_truncdf_1}
     (expr_list:REG_EQUIV (mem:SI (reg/f:SI 7 sp) [0 S4 A32])
        (expr_list:REG_EQUAL (unsigned_fix:SI (reg/v:DF 22 xmm1 [orig:67 mant ]
[67]))
            (nil))))
testcase.c:129:2: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:403
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-34 delta]$