1 files changed, 49 insertions, 0 deletions

diff --git a/meta-microblaze/recipes-devtools/gcc/gcc-10/0036-Patch-Microblaze-reverting-the-cost-check-before-pro.patch b/meta-microblaze/recipes-devtools/gcc/gcc-10/0036-Patch-Microblaze-reverting-the-cost-check-before-pro.patch
new file mode 100644
index 00000000..7079789f
--- /dev/null
+++ b/meta-microblaze/recipes-devtools/gcc/gcc-10/0036-Patch-Microblaze-reverting-the-cost-check-before-pro.patch
@@ -0,0 +1,49 @@
+From ac30efb4a5f5b6d289fdd27b268c2095d60dcb42 Mon Sep 17 00:00:00 2001
+From: Mahesh Bodapati <mbodapat@xilinx.com>
+Date: Thu, 2 Mar 2017 19:02:31 +0530
+Subject: [PATCH 36/63] [Patch,Microblaze]:reverting the cost check before
+ propagating constants.
+
+---
+ gcc/cprop.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/gcc/cprop.c b/gcc/cprop.c
+index 65c0130..42bcc81 100644
+--- a/gcc/cprop.c
++++ b/gcc/cprop.c
+@@ -733,6 +733,7 @@ try_replace_reg (rtx from, rtx to, rtx_insn *insn)
+   int success = 0;
+   rtx set = single_set (insn);
+ 
++#if 0
+   bool check_rtx_costs = true;
+   bool speed = optimize_bb_for_speed_p (BLOCK_FOR_INSN (insn));
+   int old_cost = set ? set_rtx_cost (set, speed) : 0;
+@@ -744,6 +745,7 @@ try_replace_reg (rtx from, rtx to, rtx_insn *insn)
+          && (GET_CODE (XEXP (note, 0)) == CONST
+              || CONSTANT_P (XEXP (note, 0)))))
+     check_rtx_costs = false;
++#endif
+ 
+   /* Usually we substitute easy stuff, so we won't copy everything.
+      We however need to take care to not duplicate non-trivial CONST
+@@ -752,6 +754,7 @@ try_replace_reg (rtx from, rtx to, rtx_insn *insn)
+ 
+   validate_replace_src_group (from, to, insn);
+ 
++#if 0
+   /* If TO is a constant, check the cost of the set after propagation
+      to the cost of the set before the propagation.  If the cost is
+      higher, then do not replace FROM with TO.  */
+@@ -764,6 +767,7 @@ try_replace_reg (rtx from, rtx to, rtx_insn *insn)
+       return false;
+     }
+ 
++#endif
+ 
+   if (num_changes_pending () && apply_change_group ())
+     success = 1;
+-- 
+2.7.4
+