purge_addressof bootstrap failure (was fix opt/8634)

[Andreas Tobler]

Geoff Keating wrote:

> 
> There are two testcase failures on Darwin which may be related.

These two ?

FAIL: gcc.c-torture/compile/990107-1.c,  -O1

/Volumes/xufs/gcc-cvs/gcc/gcc/testsuite/gcc.c-torture/compile/990107-1.c: 
In function `java_double_finite':
/Volumes/xufs/gcc-cvs/gcc/gcc/testsuite/gcc.c-torture/compile/990107-1.c:7: 
internal compiler error: in purge_addressof, at function.c:3445

FAIL: gcc.c-torture/compile/990203-1.c,  -O1

/Volumes/xufs/gcc-cvs/gcc/gcc/testsuite/gcc.c-torture/compile/990203-1.c: 
In function `f':
/Volumes/xufs/gcc-cvs/gcc/gcc/testsuite/gcc.c-torture/compile/990203-1.c:7: 
internal compiler error: in purge_addressof, at function.c:3445