From: Richard Henderson <rth@redhat.com>
Date: Sat, 25 Nov 2000 18:54:33 +0000 (-0800)
Subject: haifa-sched.c (sched_analyze_1, [...]): Revert 2000-11-22 change.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3e8aa6e31c6a745edcec9395021ef13ca0f0122f;p=gcc.git

haifa-sched.c (sched_analyze_1, [...]): Revert 2000-11-22 change.

        * haifa-sched.c (sched_analyze_1, sched_analyze_2, sched_analyze):
        Revert 2000-11-22 change.

From-SVN: r37741
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 92b48f615e8..97cd49a9fbe 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2000-11-25  Richard Henderson  <rth@redhat.com>
+
+	* haifa-sched.c (sched_analyze_1, sched_analyze_2, sched_analyze):
+	Revert 2000-11-22 change.
+
 2000-11-25  Bernd Schmidt  <bernds@redhat.co.uk>
 
 	* config/i386/i386.h (FIXED_REGS): Make the three flags registers
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c
index 6ad7441f9e7..477eec3f792 100644
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -3405,6 +3405,11 @@ 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
@@ -3556,6 +3561,11 @@ 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
@@ -3998,11 +4008,9 @@ 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_OUTPUT);
- 		    free_INSN_LIST_list (&deps->reg_last_sets[i]);
+		      add_dependence (insn, XEXP (u, 0), REG_DEP_ANTI);
 
 		    SET_REGNO_REG_SET (reg_pending_clobbers, i);
 		  }