haifa-sched.c (sched_analyze_1): Don't special-case calls for clobbering registers.

        * haifa-sched.c (sched_analyze_1): Don't special-case calls
        for clobbering registers.
        (sched_analyze_2): Likewise.
        (sched_analyze): Zap reg_last_uses and reg_last_sets after calls.

From-SVN: r37668

2 files changed, 16 insertions, 17 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d6187a5..c8bde8c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,10 +1,17 @@
+2000-11-22  Richard Henderson  <rth@redhat.com>
+
+	* haifa-sched.c (sched_analyze_1): Don't special-case calls
+	for clobbering registers.
+	(sched_analyze_2): Likewise.
+	(sched_analyze): Zap reg_last_uses and reg_last_sets after calls.
+
 2000-11-22  Chris Demetriou  <cgd@sibyte.com>  
-2000-11-22  Neil Booth  <neilb@earthling.net>
+	    Neil Booth  <neilb@earthling.net>
 
-        * gcc.c (validate_switches): Validate multiple switches named
-        in '|' (or) expressions in specs.  
-        (handle_braces): If more than 1 alternative in a '|' spec
-        matches, call do_spec1 just once.
+	* gcc.c (validate_switches): Validate multiple switches named
+	in '|' (or) expressions in specs.  
+	(handle_braces): If more than 1 alternative in a '|' spec
+	matches, call do_spec1 just once.
 
 2000-11-22  Michael Meissner  <meissner@redhat.com>
 
@@ -107,7 +114,7 @@ Wed Nov 22 00:52:55 2000  J"orn Rennecke <amylaar@redhat.com>
 
 2000-11-21  Neil Booth  <neilb@earthling.net>
 
-        * do_includes: Revert to using cpp_read_file.
+	* do_includes: Revert to using cpp_read_file.
 
 2000-11-21  Bernd Schmidt  <bernds@redhat.co.uk>
 
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c
index 01f08b5..cf8fe2b 100644
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -3384,11 +3384,6 @@ sched_analyze_1 (deps, x, insn)
 		}
 	      else
 		SET_REGNO_REG_SET (reg_pending_clobbers, r);
-
-	      /* Function calls clobber all call_used regs.  */
-	      if (global_regs[r] || (code == SET && call_used_regs[r]))
-		for (u = deps->last_function_call; u; u = XEXP (u, 1))
-		  add_dependence (insn, XEXP (u, 0), REG_DEP_ANTI);
 	    }
 	}
       else
@@ -3540,11 +3535,6 @@ sched_analyze_2 (deps, x, insn)
 		/* ??? This should never happen.  */
 		for (u = deps->reg_last_clobbers[r]; u; u = XEXP (u, 1))
 		  add_dependence (insn, XEXP (u, 0), 0);
-
-		if (call_used_regs[r] || global_regs[r])
-		  /* Function calls clobber all call_used regs.  */
-		  for (u = deps->last_function_call; u; u = XEXP (u, 1))
-		    add_dependence (insn, XEXP (u, 0), REG_DEP_ANTI);
 	      }
 	  }
 	else
@@ -3987,9 +3977,11 @@ sched_analyze (deps, head, tail)
 		  {
 		    for (u = deps->reg_last_uses[i]; u; u = XEXP (u, 1))
 		      add_dependence (insn, XEXP (u, 0), REG_DEP_ANTI);
+ 		    free_INSN_LIST_list (&deps->reg_last_uses[i]);
 
 		    for (u = deps->reg_last_sets[i]; u; u = XEXP (u, 1))
-		      add_dependence (insn, XEXP (u, 0), REG_DEP_ANTI);
+		      add_dependence (insn, XEXP (u, 0), REG_DEP_OUTPUT);
+ 		    free_INSN_LIST_list (&deps->reg_last_sets[i]);
 
 		    SET_REGNO_REG_SET (reg_pending_clobbers, i);
 		  }