powerpc: Restore bootstrap for Darwin.

Darwin has signed chars and the fields in the insn_data
struct are const char, which leads to the fail.

gcc/ChangeLog:

	* config/rs6000/rs6000-call.c (mma_init_builtins): Cast
	the insn_data n_operands value to unsigned.

diff --git a/gcc/config/rs6000/rs6000-call.c b/gcc/config/rs6000/rs6000-call.c
index d8b85347cc80706af117e88dc0ec18adac9c0e0f..3a109fe626f31170b008617e1ceabbc13add7912 100644 (file)
--- a/gcc/config/rs6000/rs6000-call.c
+++ b/gcc/config/rs6000/rs6000-call.c
@@ -13437,7 +13437,7 @@ mma_init_builtins (void)
        {
          /* This is a normal MMA built-in function.  */
          unsigned j = (attr & RS6000_BTC_QUAD) ? 1 : 0;
-         for (; j < insn_data[icode].n_operands; j++)
+         for (; j < (unsigned) insn_data[icode].n_operands; j++)
            {
              machine_mode mode = insn_data[icode].operand[j].mode;
              if (gimple_func && mode == PXImode)