* config/c4x/c4x.md (addqi3): Emit addqi3_noclobber pattern

	during reload.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@23872 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 37b6f60..803fb78 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Thu Nov 26 14:12:05 1998  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>
+
+       * config/c4x/c4x.md (addqi3): Emit addqi3_noclobber pattern
+       during reload.
+
 Wed Nov 25 22:05:28 1998  J"orn Rennecke <amylaar@cygnus.co.uk>
 
        * config/sh/lib1funcs.asm (___udivsi3_i4): Don't switch to sz == 1

diff --git a/gcc/config/c4x/c4x.md b/gcc/config/c4x/c4x.md
index 58033f0..117e157 100644 (file)
--- a/gcc/config/c4x/c4x.md
+++ b/gcc/config/c4x/c4x.md
@@ -1507,13 +1507,21 @@
 ;
 ; ADDI
 ;
+; This is used by reload when it calls gen_add2_insn for address arithmetic
+; so we must emit the pattern that doesn't clobber CC.
+;
 (define_expand "addqi3"
   [(parallel [(set (match_operand:QI 0 "reg_operand" "")
                    (plus:QI (match_operand:QI 1 "src_operand" "")
                             (match_operand:QI 2 "src_operand" "")))
               (clobber (reg:CC_NOOV 21))])]
   ""
-  "legitimize_operands (PLUS, operands, QImode);")
+  "legitimize_operands (PLUS, operands, QImode);
+   if (reload_in_progress)
+   {
+      emit_insn (gen_addqi3_noclobber (operands[0], operands[1], operands[2]));
+      DONE;
+   }")
 
 (define_insn "*addqi3_clobber"
   [(set (match_operand:QI 0 "reg_operand" "=d,?d,d,c,?c,c")