alpha.c (alpha_expand_prologue): Use gen_adddi3 instead of emit_move_insn+plus_constant.

alpha.c (alpha_expand_prologue): Use gen_adddi3 instead of emit_move_insn+plus_constant.

        * alpha.c (alpha_expand_prologue): Use gen_adddi3 instead of
        emit_move_insn+plus_constant.  For NT, don't use the stack probe
        loop pointer to allocate stack space.
        * alpha.md (adddi3): Always use lda to set the stack pointer.

From-SVN: r26524