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<b_jonas> slashlearn =@ccc/=@ccc is a great innovation in gcc 6, kept top secret, where inline asm statements can return a value in the carry flag on x86_64. See https://gcc.gnu.org/gcc-6/changes.html which keeps this secret, https://gcc.gnu.org/onlinedocs/gcc-6.1.0/gcc/Extended-Asm.html which documents it, and http://article.gmane.org/gmane.linux.kernel/2238065 which uses it.
author HackBot
date Fri, 17 Jun 2016 09:42:22 +0000
parents dadac04ddd97
children ca3b393399c0
files wisdom/=@ccc
diffstat 1 files changed, 1 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wisdom/=@ccc	Fri Jun 17 09:42:22 2016 +0000
@@ -0,0 +1,1 @@
+=@ccc is a great innovation in gcc 6, kept top secret, where inline asm statements can return a value in the carry flag on x86_64. See https://gcc.gnu.org/gcc-6/changes.html which keeps this secret, https://gcc.gnu.org/onlinedocs/gcc-6.1.0/gcc/Extended-Asm.html which documents it, and http://article.gmane.org/gmane.linux.kernel/2238065 which uses it.