From 6702425cd50ebb9a71d6b441df4b0df4f58d160a Mon Sep 17 00:00:00 2001 From: David Laight Date: Sun, 8 Mar 2026 11:37:26 +0000 Subject: [PATCH] tools/nolibc: Add _NOLIBC_OPTIMIZER_HIDE_VAR() to compiler.h MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Needed to stop compiler 'optimisations' bloating code. Equivalent to the definition in include/linux/compiler.h Signed-off-by: David Laight Acked-by: Willy Tarreau Link: https://patch.msgid.link/20260308113742.12649-2-david.laight.linux@gmail.com Signed-off-by: Thomas Weißschuh --- tools/include/nolibc/compiler.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/include/nolibc/compiler.h b/tools/include/nolibc/compiler.h index a8c7619dcdde2..f03f84cfadce2 100644 --- a/tools/include/nolibc/compiler.h +++ b/tools/include/nolibc/compiler.h @@ -71,4 +71,7 @@ # define __nolibc_static_assert(_t) #endif +/* Make the optimizer believe the variable can be manipulated arbitrarily. */ +#define _NOLIBC_OPTIMIZER_HIDE_VAR(var) __asm__ ("" : "+r" (var)) + #endif /* _NOLIBC_COMPILER_H */ -- 2.47.3