From: Mika Lindqvist <postmaster@raasu.org>
Date: Fri, 22 Dec 2023 11:24:54 +0000 (+0200)
Subject: Make sure uqsub16 mnemonic doesn't get optimized away.
X-Git-Tag: 2.1.6~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7fc54ef876f202ec7d4a4c61df88bcbd65e0fc6;p=thirdparty%2Fzlib-ng.git

Make sure uqsub16 mnemonic doesn't get optimized away.
---

diff --git a/cmake/detect-intrinsics.cmake b/cmake/detect-intrinsics.cmake
index cb3d9def..74ac3910 100644
--- a/cmake/detect-intrinsics.cmake
+++ b/cmake/detect-intrinsics.cmake
@@ -50,7 +50,7 @@ macro(check_armv6_compiler_flag)
             __asm__ __volatile__ ( \"uqsub16 %0, %1, %2\" : \"=r\" (c) : \"r\" (a), \"r\" (b) );
             return (int)c;
         }
-        int main(void) { return 0; }"
+        int main(void) { return f(1,2); }"
         HAVE_ARMV6_INLINE_ASM
     )
     # Check whether compiler supports ARMv6 intrinsics