* config/m32c/m32c.c (m32c_prepare_shift): Use a separate

temporary for intermediates.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118798 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ecdbbf8..a1830a7 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2006-11-13  DJ Delorie  <dj@redhat.com>
+
+       * config/m32c/m32c.c (m32c_prepare_shift): Use a separate
+       temporary for intermediates.
+
 2006-11-13  Kaz Kojima  <kkojima@gcc.gnu.org>
 
        * config/sh/sh.c (expand_cbranchdi4): Initialize skip_label.

diff --git a/gcc/config/m32c/m32c.c b/gcc/config/m32c/m32c.c
index 6846787..dcfbe6e 100644 (file)
--- a/gcc/config/m32c/m32c.c
+++ b/gcc/config/m32c/m32c.c
@@ -3423,7 +3423,7 @@ m32c_prepare_shift (rtx * operands, int scale, int shift_code)
         undefined to skip one of the comparisons.  */
 
       rtx count;
-      rtx label, lref, insn;
+      rtx label, lref, insn, tempvar;
 
       emit_move_insn (operands[0], operands[1]);
 
@@ -3432,13 +3432,15 @@ m32c_prepare_shift (rtx * operands, int scale, int shift_code)
       lref = gen_rtx_LABEL_REF (VOIDmode, label);
       LABEL_NUSES (label) ++;
 
+      tempvar = gen_reg_rtx (mode);
+
       if (shift_code == ASHIFT)
        {
          /* This is a left shift.  We only need check positive counts.  */
          emit_jump_insn (gen_cbranchqi4 (gen_rtx_LE (VOIDmode, 0, 0),
                                          count, GEN_INT (16), label));
-         emit_insn (func (operands[0], operands[0], GEN_INT (8)));
-         emit_insn (func (operands[0], operands[0], GEN_INT (8)));
+         emit_insn (func (tempvar, operands[0], GEN_INT (8)));
+         emit_insn (func (operands[0], tempvar, GEN_INT (8)));
          insn = emit_insn (gen_addqi3 (count, count, GEN_INT (-16)));
          emit_label_after (label, insn);
        }
@@ -3447,8 +3449,8 @@ m32c_prepare_shift (rtx * operands, int scale, int shift_code)
          /* This is a right shift.  We only need check negative counts.  */
          emit_jump_insn (gen_cbranchqi4 (gen_rtx_GE (VOIDmode, 0, 0),
                                          count, GEN_INT (-16), label));
-         emit_insn (func (operands[0], operands[0], GEN_INT (-8)));
-         emit_insn (func (operands[0], operands[0], GEN_INT (-8)));
+         emit_insn (func (tempvar, operands[0], GEN_INT (-8)));
+         emit_insn (func (operands[0], tempvar, GEN_INT (-8)));
          insn = emit_insn (gen_addqi3 (count, count, GEN_INT (16)));
          emit_label_after (label, insn);
        }