X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Freload1.c;h=9ee046ae1ecb794733a25deadffa11fd9a013577;hp=f29f0799140dea7c329c6ed8438d743b14fd2f33;hb=d9f9327b8c6432820044bc19bc99e02e9afec1da;hpb=022ea294da39a09fa2157b830de3bbbe3044eff2;ds=sidebyside

diff --git a/gcc/reload1.c b/gcc/reload1.c
index f29f0799140..9ee046ae1ec 100644
--- a/gcc/reload1.c
+++ b/gcc/reload1.c
@@ -6323,15 +6323,23 @@ merge_assigned_reloads (rtx insn)
 		transfer_replacements (i, j);
 	      }
 
-	  /* If this is now RELOAD_OTHER, look for any reloads that load
-	     parts of this operand and set them to RELOAD_FOR_OTHER_ADDRESS
-	     if they were for inputs, RELOAD_OTHER for outputs.  Note that
-	     this test is equivalent to looking for reloads for this operand
-	     number.  */
-	  /* We must take special care with RELOAD_FOR_OUTPUT_ADDRESS; it may
-	     share registers with a RELOAD_FOR_INPUT, so we can not change it
-	     to RELOAD_FOR_OTHER_ADDRESS.  We should never need to, since we
-	     do not modify RELOAD_FOR_OUTPUT.  */
+	  /* If this is now RELOAD_OTHER, look for any reloads that
+	     load parts of this operand and set them to
+	     RELOAD_FOR_OTHER_ADDRESS if they were for inputs,
+	     RELOAD_OTHER for outputs.  Note that this test is
+	     equivalent to looking for reloads for this operand
+	     number.
+
+	     We must take special care with RELOAD_FOR_OUTPUT_ADDRESS;
+	     it may share registers with a RELOAD_FOR_INPUT, so we can
+	     not change it to RELOAD_FOR_OTHER_ADDRESS.  We should
+	     never need to, since we do not modify RELOAD_FOR_OUTPUT.
+
+	     It is possible that the RELOAD_FOR_OPERAND_ADDRESS
+	     instruction is assigned the same register as the earlier
+	     RELOAD_FOR_OTHER_ADDRESS instruction.  Merging these two
+	     instructions will cause the RELOAD_FOR_OTHER_ADDRESS
+	     instruction to be deleted later on.  */
 
 	  if (rld[i].when_needed == RELOAD_OTHER)
 	    for (j = 0; j < n_reloads; j++)
@@ -6339,6 +6347,7 @@ merge_assigned_reloads (rtx insn)
 		  && rld[j].when_needed != RELOAD_OTHER
 		  && rld[j].when_needed != RELOAD_FOR_OTHER_ADDRESS
 		  && rld[j].when_needed != RELOAD_FOR_OUTPUT_ADDRESS
+		  && rld[j].when_needed != RELOAD_FOR_OPERAND_ADDRESS
 		  && (! conflicting_input
 		      || rld[j].when_needed == RELOAD_FOR_INPUT_ADDRESS
 		      || rld[j].when_needed == RELOAD_FOR_INPADDR_ADDRESS)