From 46a489b5e21cae3b4fea5d41cc285dcaf79d19e3 Mon Sep 17 00:00:00 2001 From: Henrik Gramner Date: Thu, 20 Apr 2017 19:16:51 +0200 Subject: [PATCH] x86inc: Make REP_RET identical to RET in SSSE3+ functions There's no point in emitting a rep prefix before ret on modern CPUs. --- common/x86/x86inc.asm | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/common/x86/x86inc.asm b/common/x86/x86inc.asm index 6c2edf9a..7c146e54 100644 --- a/common/x86/x86inc.asm +++ b/common/x86/x86inc.asm @@ -624,7 +624,7 @@ DECLARE_ARG 7, 8, 9, 10, 11, 12, 13, 14 ; We can automatically detect "follows a branch", but not a branch target. ; (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) %macro REP_RET 0 - %if has_epilogue + %if has_epilogue || cpuflag(ssse3) RET %else rep ret -- 2.40.0