re PR tree-optimization/44562 (ICE: in get_alias_set, at alias.c:716 with -flto…

re PR tree-optimization/44562 (ICE: in get_alias_set, at alias.c:716 with -flto -fstrict-aliasing -fgraphite-identity)

2010-08-25  Richard Guenther  <rguenther@suse.de>

	PR lto/44562
	* lto-streamer.c (lto_record_common_node): Do not mess with
	TYPE_CANONICAL when not in lto.
	* gimple.c (gimple_register_type): Likewise.

	* gcc.dg/graphite/id-27.c: New testcase.
	* gcc.dg/lto/20100825-1_0.c: Likewise.

From-SVN: r163545

gcc/ChangeLog

 2010-08-25  Richard Guenther  <rguenther@suse.de>
 
+	PR lto/44562
+	* lto-streamer.c (lto_record_common_node): Do not mess with
+	TYPE_CANONICAL when not in lto.
+	* gimple.c (gimple_register_type): Likewise.
+
+2010-08-25  Richard Guenther  <rguenther@suse.de>
+
 	PR tree-optimization/45316
 	* tree-ssa-pre.c (eliminate): Properly clean EH info.
 

gcc/gimple.c

@@ -4215,8 +4215,9 @@ gimple_register_type (tree t)
   gcc_assert (TYPE_P (t));
 
   /* In TYPE_CANONICAL we cache the result of gimple_register_type.
-     It is initially set to NULL during LTO streaming.  */
-  if (TYPE_CANONICAL (t))
+     It is initially set to NULL during LTO streaming.
+     But do not mess with TYPE_CANONICAL when not in WPA or link phase.  */
+  if (in_lto_p && TYPE_CANONICAL (t))
     return TYPE_CANONICAL (t);
 
   /* Always register the main variant first.  This is important so we
@@ -4282,11 +4283,13 @@ gimple_register_type (tree t)
 	  TYPE_NEXT_REF_TO (t) = NULL_TREE;
 	}
 
+      if (in_lto_p)
 	TYPE_CANONICAL (t) = new_type;
       t = new_type;
     }
   else
     {
+      if (in_lto_p)
 	TYPE_CANONICAL (t) = t;
       *slot = (void *) t;
     }

gcc/lto-streamer.c

@@ -524,6 +524,7 @@ lto_record_common_node (tree *nodep, VEC(tree, heap) **common_nodes,
     {
       /* Type merging will get confused by the canonical types as they
 	 are set by the middle-end.  */
+      if (in_lto_p)
 	TYPE_CANONICAL (node) = NULL_TREE;
       *nodep = node = gimple_register_type (node);
     }

gcc/testsuite/ChangeLog

 2010-08-25  Richard Guenther  <rguenther@suse.de>
 
+	PR lto/44562
+	* gcc.dg/graphite/id-27.c: New testcase.
+	* gcc.dg/lto/20100825-1_0.c: Likewise.
+
+2010-08-25  Richard Guenther  <rguenther@suse.de>
+
 	PR tree-optimization/45316
 	* g++.dg/opt/pr45316.C: New testcase.
 

gcc/testsuite/gcc.dg/graphite/id-27.c

+/* { dg-options "-O2 -fgraphite-identity -flto" { target lto } } */
+
+typedef long ll;
+void foo (int n, ll *p)
+{
+  while (n--)
+    *p += *p;
+}
+
+typedef long long lll;
+void bar (int n, lll *p)
+{
+  while (n--)
+    *p += *p;
+}
+
+int main() { return 0; }

gcc/testsuite/gcc.dg/lto/20100825-1_0.c

+/* { dg-lto-do link } */
+/* { dg-lto-options { { -O3 -flto } } } */
+
+typedef unsigned int UINT32;
+typedef unsigned long long UINT64;
+typedef struct { UINT64 w[2]; } UINT128;
+void _bid_to_dpd128 (UINT128 *, UINT128 *);
+static const int short_recip_scale[] = {
+  1,
+  65 - 64,
+  69 - 64,
+  71 - 64,
+  75 - 64,
+  78 - 64,
+  81 - 64,
+  85 - 64,
+  88 - 64,
+  91 - 64,
+  95 - 64,
+  98 - 64,
+  101 - 64,
+  105 - 64,
+  108 - 64,
+  111 - 64,
+  115 - 64,
+  118 - 64
+};
+
+void _bid_to_dpd128 (UINT128 *, UINT128 *);
+
+void
+_bid_to_dpd128 (UINT128 *pres, UINT128 *px) {
+  UINT128 res;
+  unsigned int comb;
+  UINT128 bcoeff;
+  UINT128 BH;
+  UINT64 BL, d109;
+  unsigned int amount;
+  UINT128 x = *px;
+
+  comb = (x.w[1] ) >> 46;
+  if ((comb & 0x1e000) == 0x1e000) {
+    res = x;
+  } else {
+    bcoeff.w[1] = (x.w[1] & 0x0001ffffffffffffull);
+    bcoeff.w[0] = x.w[0];
+    amount = 9;
+    BH.w[0] = (BH.w[0] >> amount) | (BH.w[1] << (64 - amount));
+    BL = bcoeff.w[0] - BH.w[0] * 1000000000000000000ull;
+    d109 = 0x3333333333333334ull;
+    { UINT64 CXH, CXL, CYH,CYL,PL,PH,PM,PM2; CXH = (BH.w[0]) >> 32; CXL = (UINT32)(BH.w[0]); CYH = (d109) >> 32; CYL = (UINT32)(d109); PM = CXH*CYL; PH = CXH*CYH; PL = CXL*CYL; PM2 = CXL*CYH; PH += (PM>>32); PM = (UINT64)((UINT32)PM)+PM2+(PL>>32); };
+    { UINT64 CXH, CXL, CYH,CYL,PL,PH,PM,PM2; CXH = (BL) >> 32; CXL = (UINT32)(BL); CYH = (d109) >> 32; CYL = (UINT32)(d109); PM = CXH*CYL; PH = CXH*CYH; PL = CXL*CYL; PM2 = CXL*CYH; PH += (PM>>32); PM = (UINT64)((UINT32)PM)+PM2+(PL>>32);  };
+  }
+  *pres = res;
+}
+
+int main() { return 0; }