(optimize_reg_copy): A register that dies in a CALL_INSN doesn't cross

that call. From-SVN: r6555

(optimize_reg_copy): A register that dies in a CALL_INSN doesn't cross
that call. From-SVN: r6555
da2c9ff9 · Richard Kenner · c764eafd · da2c9ff9
Commit da2c9ff9 authored 31 years ago by Richard Kenner
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Showing with 4 additions and 2 deletions

gcc/local-alloc.c
+4 -2

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--- a/gcc/local-alloc.c
+++ b/gcc/local-alloc.c
 /* Allocate registers within a basic block, for GNU compiler.
-   Copyright (C) 1987, 1988, 1991, 1993 Free Software Foundation, Inc.
+   Copyright (C) 1987, 1988, 1991, 1993, 1994 Free Software Foundation, Inc.

 This file is part of GNU CC.

@@ -770,7 +770,9 @@ optimize_reg_copy_1 (insn, dest, src)
 	      if (dest_death)
 		d_length++;

-	      if (GET_CODE (q) == CALL_INSN)
+	      /* If the insn in which SRC dies is a CALL_INSN, don't count it
+		 as a call that has been crossed.  Otherwise, count it.  */
+	      if (q != p && GET_CODE (q) == CALL_INSN)
 		{
 		  n_calls++;
 		  if (dest_death)