[x265] [PATCH 06/12] AArch64: Don't pass -mstackrealign option

[Hari Limaye]

With the compiler option `-mstackrealign`, Clang emits function prologue
and epilogue instructions to create and then restore a frame record,
even when not necessary.

Omit this option when building for AArch64 as it is unnecessary.
---
 source/CMakeLists.txt | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/source/CMakeLists.txt b/source/CMakeLists.txt
index 413311de7..c74db2179 100755
--- a/source/CMakeLists.txt
+++ b/source/CMakeLists.txt
@@ -338,9 +338,11 @@ if(GCC)
     if (CC_HAS_FAST_MATH)
         add_definitions(-ffast-math)
     endif()
-    check_cxx_compiler_flag(-mstackrealign CC_HAS_STACK_REALIGN)
-    if (CC_HAS_STACK_REALIGN)
-        add_definitions(-mstackrealign)
+    if (NOT (ARM64 OR CROSS_COMPILE_ARM64))
+        check_cxx_compiler_flag(-mstackrealign CC_HAS_STACK_REALIGN)
+        if (CC_HAS_STACK_REALIGN)
+            add_definitions(-mstackrealign)
+        endif()
     endif()
     # Disable exceptions. Reduce executable size, increase compability.
     check_cxx_compiler_flag(-fno-exceptions CC_HAS_FNO_EXCEPTIONS_FLAG)
--
2.42.1

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