gcc:

        * common/config/epiphany/epiphany-common.c
        (epiphany_option_optimization_table): Enable section anchors by
        default at -O1 or higher.
        * config/epiphany/epiphany.c (TARGET_MAX_ANCHOR_OFFSET): Define.
        (TARGET_MIN_ANCHOR_OFFSET): Likewise.
        (epiphany_rtx_costs) <SET>: For binary operators, the set as such
        carries no extra cost.
        (epiphany_legitimate_address_p): For BLKmode, apply SImode check.
        * config/epiphany/epiphany.h (ASM_OUTPUT_DEF): Define.
        * config/epiphany/predicates.md (memclob_operand): New predicate.
        * config/epiphany/epiphany.md (stack_adjust_add, stack_adjust_str):
        Use memclob_operand predicate and X constraint for operand 3.
gcc/testsuite:
        * gcc.target/epiphany/t1068-2.c: New file.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@209320 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 17 insertions, 1 deletions

diff --git a/gcc/config/epiphany/epiphany.c b/gcc/config/epiphany/epiphany.c
index 8e45ea756d2..f3955b916e9 100644
--- a/gcc/config/epiphany/epiphany.c
+++ b/gcc/config/epiphany/epiphany.c
@@ -145,6 +145,13 @@ static rtx frame_insn (rtx);
   hook_bool_const_tree_hwi_hwi_const_tree_true
 #define TARGET_ASM_OUTPUT_MI_THUNK epiphany_output_mi_thunk
 
+/* ??? we can use larger offsets for wider-mode sized accesses, but there
+   is no concept of anchors being dependent on the modes that they are used
+   for, so we can only use an offset range that would suit all modes.  */
+#define TARGET_MAX_ANCHOR_OFFSET (optimize_size ? 31 : 2047)
+/* We further restrict the minimum to be a multiple of eight.  */
+#define TARGET_MIN_ANCHOR_OFFSET (optimize_size ? 0 : -2040)
+
 #include "target-def.h"
 
 #undef TARGET_ASM_ALIGNED_HI_OP
@@ -776,6 +783,15 @@ epiphany_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED,
 	  return false;
 	}
 
+	
+    case SET:
+      {
+	rtx src = SET_SRC (x);
+	if (BINARY_P (src))
+	  *total = 0;
+	return false;
+      }
+
     default:
       return false;
     }
@@ -2016,7 +2032,7 @@ epiphany_legitimate_address_p (enum machine_mode mode, rtx x, bool strict)
       && LEGITIMATE_OFFSET_ADDRESS_P (mode, XEXP ((x), 1)))
     return true;
   if (mode == BLKmode)
-    return true;
+    return epiphany_legitimate_address_p (SImode, x, strict);
   return false;
 }