* module/language/c99/compiler.mes (base->ident): Remove.
(accu->ident): Use them to support assign of size >4 by value.
* scaffold/tests/7h-struct-assign.c: Test it.
* make.scm (add-scaffold-test): Build it.
* module/mes/as-i386.mes (i386:base->local): Remove.
(i386:accu*n->local):
(i386:accu*n->label): New functions.
* module/mes/as-i386.scm: Export them.
* stage0/x86.M1: (mov____%ebx,0x32):
(mov____%ebx,0x32(%ebp)):
(mov____%ebx,0x8(%ebp)):
(mov____%ebx,0x8(%edx)):
(mov____%ecx,0x32(%ebp)):
(mov____%ecx,0x8(%ebp)):
(mov____0x32(%eax),%ebx):
(mov____0x32(%eax),%ecx):
(mov____0x8(%eax),%ebx): New define.
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