AARCH64: ILP32: Fix aarch64_asan_shadow_offset

aarch64_asan_shadow_offset is using the wrong
offset for ILP32.  Change it to be a decent one.

ChangeLog:
* config/aarch64/aarch64.c (aarch64_asan_shadow_offset):
Fix ILP32 value.

From-SVN: r271920

gcc/ChangeLog

+2019-06-04  Andrew Pinski  <apinski@marvell.com>
+
+	* config/aarch64/aarch64.c (aarch64_asan_shadow_offset):
+	Fix ILP32 value.
+
 2019-06-04  Segher Boessenkool  <segher@kernel.crashing.org>
 
 	* config/rs6000/constraints.md (define_register_constraint "wd"):

gcc/config/aarch64/aarch64.c

@@ -17574,7 +17574,10 @@ aarch64_expand_subvti (rtx op0, rtx low_dest, rtx low_in1,
 static unsigned HOST_WIDE_INT
 aarch64_asan_shadow_offset (void)
 {
-  return (HOST_WIDE_INT_1 << 36);
+  if (TARGET_ILP32)
+    return (HOST_WIDE_INT_1 << 29);
+  else
+    return (HOST_WIDE_INT_1 << 36);
 }
 
 static rtx