ia64.c (ia64_expand_tls_address): Properly truncate result when op0 is SImode.

        * config/ia64/ia64.c (ia64_expand_tls_address): Properly truncate
        result when op0 is SImode.

From-SVN: r70790

gcc/ChangeLog

+2003-08-25  Richard Henderson  <rth@redhat.com>
+
+	* config/ia64/ia64.c (ia64_expand_tls_address): Properly truncate
+	result when op0 is SImode.
+	
 2003-08-25  Nathanael Nerode  <neroden@twcny.rr.com>
 
 	* fixinc/inclhack.def (svr4_sighandler_type): New fix, ported

gcc/config/ia64/ia64.c

@@ -1222,6 +1222,7 @@ static rtx
 ia64_expand_tls_address (enum tls_model tls_kind, rtx op0, rtx op1)
 {
   rtx tga_op1, tga_op2, tga_ret, tga_eqv, tmp, insns;
+  rtx orig_op0 = op0;
 
   switch (tls_kind)
     {
@@ -1245,8 +1246,10 @@ ia64_expand_tls_address (enum tls_model tls_kind, rtx op0, rtx op1)
       insns = get_insns ();
       end_sequence ();
 
+      if (GET_MODE (op0) != Pmode)
+	op0 = tga_ret;
       emit_libcall_block (insns, op0, tga_ret, op1);
-      return NULL_RTX;
+      break;
 
     case TLS_MODEL_LOCAL_DYNAMIC:
       /* ??? This isn't the completely proper way to do local-dynamic
@@ -1274,19 +1277,16 @@ ia64_expand_tls_address (enum tls_model tls_kind, rtx op0, rtx op1)
       tmp = gen_reg_rtx (Pmode);
       emit_libcall_block (insns, tmp, tga_ret, tga_eqv);
 
-      if (register_operand (op0, Pmode))
-	tga_ret = op0;
-      else
-	tga_ret = gen_reg_rtx (Pmode);
+      if (!register_operand (op0, Pmode))
+	op0 = gen_reg_rtx (Pmode);
       if (TARGET_TLS64)
 	{
-	  emit_insn (gen_load_dtprel (tga_ret, op1));
-	  emit_insn (gen_adddi3 (tga_ret, tmp, tga_ret));
+	  emit_insn (gen_load_dtprel (op0, op1));
+	  emit_insn (gen_adddi3 (op0, tmp, op0));
 	}
       else
-	emit_insn (gen_add_dtprel (tga_ret, tmp, op1));
-
-      return (tga_ret == op0 ? NULL_RTX : tga_ret);
+	emit_insn (gen_add_dtprel (op0, tmp, op1));
+      break;
 
     case TLS_MODEL_INITIAL_EXEC:
       tmp = gen_reg_rtx (Pmode);
@@ -1295,32 +1295,32 @@ ia64_expand_tls_address (enum tls_model tls_kind, rtx op0, rtx op1)
       RTX_UNCHANGING_P (tmp) = 1;
       tmp = force_reg (Pmode, tmp);
 
-      if (register_operand (op0, Pmode))
-	op1 = op0;
-      else
-	op1 = gen_reg_rtx (Pmode);
-      emit_insn (gen_adddi3 (op1, tmp, gen_thread_pointer ()));
-
-      return (op1 == op0 ? NULL_RTX : op1);
+      if (!register_operand (op0, Pmode))
+	op0 = gen_reg_rtx (Pmode);
+      emit_insn (gen_adddi3 (op0, tmp, gen_thread_pointer ()));
+      break;
 
     case TLS_MODEL_LOCAL_EXEC:
-      if (register_operand (op0, Pmode))
-	tmp = op0;
-      else
-	tmp = gen_reg_rtx (Pmode);
+      if (!register_operand (op0, Pmode))
+	op0 = gen_reg_rtx (Pmode);
       if (TARGET_TLS64)
 	{
-	  emit_insn (gen_load_tprel (tmp, op1));
-	  emit_insn (gen_adddi3 (tmp, gen_thread_pointer (), tmp));
+	  emit_insn (gen_load_tprel (op0, op1));
+	  emit_insn (gen_adddi3 (op0, gen_thread_pointer (), op0));
 	}
       else
-	emit_insn (gen_add_tprel (tmp, gen_thread_pointer (), op1));
-
-      return (tmp == op0 ? NULL_RTX : tmp);
+	emit_insn (gen_add_tprel (op0, gen_thread_pointer (), op1));
+      break;
 
     default:
       abort ();
     }
+
+  if (orig_op0 == op0)
+    return NULL_RTX;
+  if (GET_MODE (orig_op0) == Pmode)
+    return op0;
+  return gen_lowpart (GET_MODE (orig_op0), op0);
 }
 
 rtx