From: Richard Henderson <rth@cygnus.com>
Date: Tue, 24 Oct 2000 00:26:12 +0000 (-0700)
Subject: ia64.c (ia64_expand_prologue): Mark extra output registers as fixed.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=8a959ea52ed701328f6e062950b43140792af5bb;p=gcc.git

ia64.c (ia64_expand_prologue): Mark extra output registers as fixed.

        * config/ia64/ia64.c (ia64_expand_prologue): Mark extra
        output registers as fixed.
        (ia64_function_epilogue): Undo output fixation.

From-SVN: r37029
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9ba7546563c..1f6efffaa89 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2000-10-23  Richard Henderson  <rth@cygnus.com>
+
+	* config/ia64/ia64.c (ia64_expand_prologue): Mark extra 
+	output registers as fixed.
+	(ia64_function_epilogue): Undo output fixation.
+
 2000-10-23  Richard Henderson  <rth@cygnus.com>
 
 	* config/alpha/alpha.md: Add names for all unnamed insns; use
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 6d13ef8c7ef..dcf3ce17ff7 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -1852,6 +1852,12 @@ ia64_expand_prologue ()
 	reg_names[OUT_REG (i)] = ia64_reg_numbers[inputs + locals + i];
     }
 
+  /* ??? Temporarily mark the remaining output registers fixed, so
+     that the register renaming pass does not try to used them after
+     we've fixed the size of the register frame.  */
+  for (i = current_frame_info.n_output_regs; i < 8; ++i)
+    fixed_regs[OUT_REG (i)] = 1;
+
   /* Set the frame pointer register name.  The regnum is logically loc79,
      but of course we'll not have allocated that many locals.  Rather than
      worrying about renumbering the existing rtxs, we adjust the name.  */
@@ -2475,6 +2481,8 @@ ia64_function_epilogue (file, size)
      FILE *file ATTRIBUTE_UNUSED;
      int size ATTRIBUTE_UNUSED;
 {
+  int i;
+
   /* Reset from the function's potential modifications.  */
   XINT (return_address_pointer_rtx, 0) = RETURN_ADDRESS_POINTER_REGNUM;
 
@@ -2487,8 +2495,6 @@ ia64_function_epilogue (file, size)
     }
   if (! TARGET_REG_NAMES)
     {
-      int i;
-
       for (i = 0; i < current_frame_info.n_input_regs; i++)
 	reg_names[IN_REG (i)] = ia64_input_reg_names[i];
       for (i = 0; i < current_frame_info.n_local_regs; i++)
@@ -2496,6 +2502,10 @@ ia64_function_epilogue (file, size)
       for (i = 0; i < current_frame_info.n_output_regs; i++)
 	reg_names[OUT_REG (i)] = ia64_output_reg_names[i];
     }
+
+  for (i = 0; i < 8; ++i)
+    fixed_regs[OUT_REG (i)] = 0;
+
   current_frame_info.initialized = 0;
 }