From: Richard Biener <rguenther@suse.de>
Date: Fri, 26 Jan 2024 14:11:47 +0000 (+0100)
Subject: debug/103047 - argument order of inlined functions
X-Git-Tag: basepoints/gcc-15~1653
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b702dc980215074a06535e3aa52a766bef38af4c;p=thirdparty%2Fgcc.git

debug/103047 - argument order of inlined functions

The inliner puts variables for parameters of the inlined functions
in the inline scope in reverse order.  The following reverses them
again so that we get consistent ordering between the
DW_TAG_subprogram DW_TAG_formal_parameter and the
DW_TAG_inlined_subroutine DW_TAG_formal_parameter set.

I failed to create a testcase with regexps since the inline
instances have just abstract origins and so I can't match them up.

	PR debug/103047
	* tree-inline.cc (initialize_inlined_parameters): Reverse
	the decl chain of inlined parameters.
---

diff --git a/gcc/tree-inline.cc b/gcc/tree-inline.cc
index 1a2541ad9523..75c10eb7dfc2 100644
--- a/gcc/tree-inline.cc
+++ b/gcc/tree-inline.cc
@@ -3684,6 +3684,10 @@ initialize_inlined_parameters (copy_body_data *id, gimple *stmt,
       setup_one_parameter (id, p, static_chain, fn, bb, &vars);
     }
 
+  /* Reverse so the variables appear in the correct order in DWARF
+     debug info.  */
+  vars = nreverse (vars);
+
   declare_inline_vars (id->block, vars);
 }