From: Jose E. Marchesi <jose.marchesi@oracle.com>
Date: Fri, 28 Jul 2023 19:01:08 +0000 (+0200)
Subject: bpf: disable tail call optimization in BPF targets
X-Git-Tag: basepoints/gcc-15~7282
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9f5372707f920fcf672eca76243c0d6de460f787;p=thirdparty%2Fgcc.git

bpf: disable tail call optimization in BPF targets

clang disables tail call optimizations in BPF targets.  Do the same in
GCC.

gcc/ChangeLog:

	* config/bpf/bpf.cc (bpf_option_override): Disable tail-call
	optimizations in BPF target.
---

diff --git a/gcc/config/bpf/bpf.cc b/gcc/config/bpf/bpf.cc
index b5b5674edbb5..57817cdf2f86 100644
--- a/gcc/config/bpf/bpf.cc
+++ b/gcc/config/bpf/bpf.cc
@@ -273,6 +273,9 @@ bpf_option_override (void)
 	      "on this architecture");
       flag_stack_protect = 0;
     }
+
+  /* The BPF target does not support tail call optimization.  */
+  flag_optimize_sibling_calls = 0;
 }
 
 #undef TARGET_OPTION_OVERRIDE