From: Richard Stallman <rms@gnu.org>
Date: Wed, 25 Nov 1992 18:03:49 +0000 (+0000)
Subject: (expand_inline_function): Ensure a REG used as
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2ad701bad01f7a0a6ba0ace0c0c33fcacd835d30;p=gcc.git

(expand_inline_function): Ensure a REG used as
COPY has REG_USERVAR_P set if LOC does.

From-SVN: r2796
---

diff --git a/gcc/integrate.c b/gcc/integrate.c
index 952a6477ccf..14ce7275323 100644
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -1372,10 +1372,17 @@ expand_inline_function (fndecl, parms, target, ignore, type, structure_value_add
 	{
 	  /* This is the good case where the parameter is in a register.
 	     If it is read-only and our argument is a constant, set up the
-	     constant equivalence.  */
-	  if (GET_CODE (copy) != REG && GET_CODE (copy) != SUBREG)
+	     constant equivalence.
+
+	     If LOC is REG_USERVAR_P, the usual case, COPY must also have
+	     that flag set if it is a register.  */
+
+	  if ((GET_CODE (copy) != REG && GET_CODE (copy) != SUBREG)
+	      || (GET_CODE (copy) == REG && REG_USERVAR_P (loc)
+		  && ! REG_USERVAR_P (copy)))
 	    {
 	      temp = copy_to_mode_reg (GET_MODE (loc), copy);
+	      REG_USERVAR_P (temp) = REG_USERVAR_P (loc);
 	      if (CONSTANT_P (copy) || FIXED_BASE_PLUS_P (copy))
 		{
 		  map->const_equiv_map[REGNO (temp)] = copy;