re PR bootstrap/80897 (gnat bootstrap broken on SPARC64/Linux)

	PR target/80897
	* config/sparc/sparc.c (sparc_emit_set_symbolic_const64): Deal with too
	large offsets.

From-SVN: r251847

6 files changed, 122 insertions, 2 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 138a776..a58252e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,13 @@
+2017-09-07  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR target/80897
+	* config/sparc/sparc.c (sparc_emit_set_symbolic_const64): Deal with too
+	large offsets.
+
 2017-09-07  Carl Love  <cel@us.ibm.com>
 
-	* config/rs6000/vsx.md (define_insn "*stxvl"): Add missing argument to the sldi instruction.
+	* config/rs6000/vsx.md (define_insn "*stxvl"): Add missing argument to
+	the sldi instruction.
 
 2017-09-07  David Edelsohn  <dje.gcc@gmail.com>
 
diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 3a532e5..9fe89c0 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -2159,9 +2159,25 @@ sparc_emit_set_const32 (rtx op0, rtx op1)
 void
 sparc_emit_set_symbolic_const64 (rtx op0, rtx op1, rtx temp)
 {
-  rtx temp1, temp2, temp3, temp4, temp5;
+  rtx cst, temp1, temp2, temp3, temp4, temp5;
   rtx ti_temp = 0;
 
+  /* Deal with too large offsets.  */
+  if (GET_CODE (op1) == CONST
+      && GET_CODE (XEXP (op1, 0)) == PLUS
+      && CONST_INT_P (cst = XEXP (XEXP (op1, 0), 1))
+      && trunc_int_for_mode (INTVAL (cst), SImode) != INTVAL (cst))
+    {
+      gcc_assert (!temp);
+      temp1 = gen_reg_rtx (DImode);
+      temp2 = gen_reg_rtx (DImode);
+      sparc_emit_set_const64 (temp2, cst);
+      sparc_emit_set_symbolic_const64 (temp1, XEXP (XEXP (op1, 0), 0),
+				       NULL_RTX);
+      emit_insn (gen_rtx_SET (op0, gen_rtx_PLUS (DImode, temp1, temp2)));
+      return;
+    }
+
   if (temp && GET_MODE (temp) == TImode)
     {
       ti_temp = temp;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1080030..2ef3b16 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2017-09-07  Eric Botcazou  <ebotcazou@adacore.com>
+	
+	* gnat.dg/opt67.adb: New test.
+	* gnat.dg/opt67_pkg.ad[sb]: New helper.
+
 2017-09-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/81979
diff --git a/gcc/testsuite/gnat.dg/opt67.adb b/gcc/testsuite/gnat.dg/opt67.adb
new file mode 100644
index 0000000..20590d1
--- /dev/null
+++ b/gcc/testsuite/gnat.dg/opt67.adb
@@ -0,0 +1,35 @@
+-- { dg-do run }
+-- { dg-options "-O" }
+
+with Opt67_Pkg; use Opt67_Pkg;
+
+procedure Opt67 is
+
+  function Predef_Stream_Attr_Spec
+    (Loc      : Source_Ptr;
+     Tag_Typ  : Entity_Id;
+     Name     : TSS_Name_Type) return Node_Id is
+  begin
+    return Predef (Loc, Make_TSS_Name (Tag_Typ, Name), Tag_Typ);
+  end;
+
+  Stream_Op_TSS_Names :
+    constant array (Integer range <>) of TSS_Name_Type :=
+      (TSS_Stream_Read,
+       TSS_Stream_Write,
+       TSS_Stream_Input,
+       TSS_Stream_Output);
+
+  Tag_Typ : constant Entity_Id := Entity_Id(Init);
+  Res : constant Natural := Init;
+  Loc : constant Source_Ptr := Source_Ptr(Init);
+
+begin
+  for Op in Stream_Op_TSS_Names'Range loop
+    if Stream_Operation_OK (Tag_Typ, Stream_Op_TSS_Names (Op)) then
+      Append_To (Res,
+         Predef_Stream_Attr_Spec (Loc, Tag_Typ,
+                                  Stream_Op_TSS_Names (Op)));
+    end if;
+  end loop;
+end;
diff --git a/gcc/testsuite/gnat.dg/opt67_pkg.adb b/gcc/testsuite/gnat.dg/opt67_pkg.adb
new file mode 100644
index 0000000..4222531
--- /dev/null
+++ b/gcc/testsuite/gnat.dg/opt67_pkg.adb
@@ -0,0 +1,29 @@
+package body Opt67_Pkg is
+
+  function Make_TSS_Name (Typ : Entity_Id; Nam : TNT) return Name_Id is
+  begin
+    return 0;
+  end;
+
+  function Stream_Operation_OK (N : Entity_Id; Name : TNT) return Boolean is
+  begin
+    return True;
+  end;
+
+  procedure Append_To (N1 : Natural; N2 : Node_Id) is
+  begin
+    null;
+  end;
+
+  function Predef (Loc : Source_Ptr; Name : Name_Id; E : Entity_Id)
+    return Node_Id is
+  begin
+    return 0;
+  end;
+
+  function Init return Natural is
+  begin
+    return 0;
+  end;
+
+end Opt67_Pkg;
diff --git a/gcc/testsuite/gnat.dg/opt67_pkg.ads b/gcc/testsuite/gnat.dg/opt67_pkg.ads
new file mode 100644
index 0000000..c253371
--- /dev/null
+++ b/gcc/testsuite/gnat.dg/opt67_pkg.ads
@@ -0,0 +1,28 @@
+package Opt67_Pkg is
+
+  type Source_Ptr is new Natural;
+  type Entity_Id is new Natural;
+  type Node_Id is new Natural;
+  type Name_Id is new Natural;
+
+  type TSS_Name_Type is new String (1 .. 2);
+  subtype TNT is TSS_Name_Type;
+
+  TSS_Stream_Input       : constant TNT := "SI";
+  TSS_Stream_Output      : constant TNT := "SO";
+  TSS_Stream_Read        : constant TNT := "SR";
+  TSS_Stream_Write       : constant TNT := "SW";
+  TSS_To_Any             : constant TNT := "TA";
+
+  function Make_TSS_Name (Typ : Entity_Id; Nam : TSS_Name_Type) return Name_Id;
+
+  function Stream_Operation_OK (N : Entity_Id; Name : TNT) return Boolean;
+
+  procedure Append_To (N1 : Natural; N2 : Node_Id);
+
+  function Predef (Loc : Source_Ptr; Name : Name_Id; E : Entity_Id)
+    return Node_Id;
+
+  function Init return Natural;
+
+end Opt67_Pkg;