[gcc(refs/vendors/ARM/heads/arm-12)] Enable -fcode-hoisting with -Os.

[Stam Markianos-Wright]

https://gcc.gnu.org/g:3b57560f4670bd7ccea178e18e763cdffda7ad18

commit 3b57560f4670bd7ccea178e18e763cdffda7ad18
Author: Vidya Praveen <vidyapraveen@arm.com>
Date:   Fri Jun 19 17:01:03 2020 +0100

    Enable -fcode-hoisting with -Os.
    
        Author: Wilco Dijkstra <wdijkstr@arm.com>
    
        PR tree-optimization/80155
        * common/config/arm/arm-common.c (arm_option_optimization_table):
        Enable -fcode-hoisting with -Os.

Diff:
---
 gcc/common/config/arm/arm-common.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/common/config/arm/arm-common.cc b/gcc/common/config/arm/arm-common.cc
index c38812f1ea6..4e1fece0ab2 100644
--- a/gcc/common/config/arm/arm-common.cc
+++ b/gcc/common/config/arm/arm-common.cc
@@ -41,6 +41,8 @@ static const struct default_options arm_option_optimization_table[] =
     /* Enable section anchors by default at -O1 or higher.  */
     { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 },
     { OPT_LEVELS_1_PLUS, OPT_fsched_pressure, NULL, 1 },
+    /* Enable code hoisting only with -Os.  */
+    { OPT_LEVELS_SIZE, OPT_fcode_hoisting, NULL, 1 },
     { OPT_LEVELS_NONE, 0, NULL, 0 }
   };