From: Richard Henderson <rth@redhat.com>
Date: Thu, 26 Jun 2003 20:51:54 +0000 (-0700)
Subject: ia64.c (ia64_expand_call): Don't add ar.pfs for sibcalls.
X-Git-Tag: releases/gcc-3.4.0~5438
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=4e14f1f90fe38d7e5e25aa23fbb8e57fafd72a3e;p=thirdparty%2Fgcc.git

ia64.c (ia64_expand_call): Don't add ar.pfs for sibcalls.

        * config/ia64/ia64.c (ia64_expand_call): Don't add ar.pfs for sibcalls.
        (ia64_split_call): Only load descriptor for GP register inputs.
        (ia64_expand_epilogue): Check current_frame_info.mask not
        current_function_is_leaf to restore ar.pfs.

From-SVN: r68549
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e2cc0491e62e..90789f493596 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -2,6 +2,13 @@
 
 	* config/ia64/ia64.h (REGISTER_NAMES): R0 is really AP.
 
+2003-06-26  Richard Henderson  <rth@redhat.com>
+
+	* config/ia64/ia64.c (ia64_expand_call): Don't add ar.pfs for sibcalls.
+	(ia64_split_call): Only load descriptor for GP register inputs.
+	(ia64_expand_epilogue): Check current_frame_info.mask not
+	current_function_is_leaf to restore ar.pfs.
+
 2003-06-26  Richard Henderson  <rth@redhat.com>
 	
 	* emit-rtl.c (try_split): Append to new CALL_INSN_FUNCTION_USAGE
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index eea13a7d9fe5..3803033a4b85 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -1499,11 +1499,7 @@ ia64_expand_call (retval, addr, nextarg, sibcall_p)
     }
 
   if (sibcall_p)
-    {
-      use_reg (&CALL_INSN_FUNCTION_USAGE (insn), b0);
-      use_reg (&CALL_INSN_FUNCTION_USAGE (insn),
-	       gen_rtx_REG (DImode, AR_PFS_REGNUM));
-    }
+    use_reg (&CALL_INSN_FUNCTION_USAGE (insn), b0);
 }
 
 void
@@ -1557,7 +1553,7 @@ ia64_split_call (retval, addr, retaddr, scratch_r, scratch_b,
 
   /* If we find we're calling through a register, then we're actually
      calling through a descriptor, so load up the values.  */
-  if (REG_P (addr))
+  if (REG_P (addr) && GR_REGNO_P (REGNO (addr)))
     {
       rtx tmp;
       bool addr_dead_p;
@@ -2785,7 +2781,7 @@ ia64_expand_epilogue (sibcall_p)
       reg = gen_rtx_REG (DImode, AR_PFS_REGNUM);
       emit_move_insn (reg, alt_reg);
     }
-  else if (! current_function_is_leaf)
+  else if (TEST_HARD_REG_BIT (current_frame_info.mask, AR_PFS_REGNUM))
     {
       alt_regno = next_scratch_gr_reg ();
       alt_reg = gen_rtx_REG (DImode, alt_regno);