[Bug target/43668] [4.4/4.5 Regression] -fschedule-insns causes FAIL: gcc.target/i386/vararg-1.c execution test

[hjl dot tools at gmail dot com]

------- Comment #2 from hjl dot tools at gmail dot com  2010-04-07 05:42 -------
i386.c has

     tmp_reg = gen_reg_rtx (Pmode);
      emit_insn (gen_rtx_SET (VOIDmode, tmp_reg,
                              plus_constant (save_area,
                                             ix86_varargs_gpr_size + 127)));
      mem = gen_rtx_MEM (BLKmode, plus_constant (tmp_reg, -127));
      MEM_NOTRAP_P (mem) = 1;
      set_mem_alias_set (mem, set);
      set_mem_align (mem, BITS_PER_WORD);

      /* And finally do the dirty job!  */
      emit_insn (gen_sse_prologue_save (mem, nsse_reg,
                                        GEN_INT (cum->sse_regno), label));

We pass 64bit aligned memory to sse_prologue_save_insn which
uses movaps on 64bit aligned memory.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43668