gcc/

	Backport from trunk r244586.
	2017-01-18  Wilco Dijkstra  <wdijkstr@arm.com>

	* config/aarch64/aarch64.c (aarch64_sched_adjust_priority)
	New function.
	(TARGET_SCHED_ADJUST_PRIORITY): Define target hook.

Change-Id: Id6f8c329d97ca125353b04ab813a453097bf45c0

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index cbe82bd..c2bf18c 100644 (file)
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -13667,6 +13667,26 @@ aarch64_sched_fusion_priority (rtx_insn *insn, int max_pri,
   return;
 }
 
+/* Implement the TARGET_SCHED_ADJUST_PRIORITY hook.
+   Adjust priority of sha1h instructions so they are scheduled before
+   other SHA1 instructions.  */
+
+static int
+aarch64_sched_adjust_priority (rtx_insn *insn, int priority)
+{
+  rtx x = PATTERN (insn);
+
+  if (GET_CODE (x) == SET)
+    {
+      x = SET_SRC (x);
+
+      if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_SHA1H)
+       return priority + 10;
+    }
+
+  return priority;
+}
+
 /* Given OPERANDS of consecutive load/store, check if we can merge
    them into ldp/stp.  LOAD is true if they are load instructions.
    MODE is the mode of memory operands.  */
@@ -14436,6 +14456,9 @@ aarch64_optab_supported_p (int op, machine_mode mode1, machine_mode,
 #undef TARGET_CAN_USE_DOLOOP_P
 #define TARGET_CAN_USE_DOLOOP_P can_use_doloop_if_innermost
 
+#undef TARGET_SCHED_ADJUST_PRIORITY
+#define TARGET_SCHED_ADJUST_PRIORITY aarch64_sched_adjust_priority
+
 #undef TARGET_SCHED_MACRO_FUSION_P
 #define TARGET_SCHED_MACRO_FUSION_P aarch64_macro_fusion_p