From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Fri, 12 Jul 2019 17:00:40 +0000 (+0000)
Subject: Turn off ipa-ra in builtins test (PR91059)
X-Git-Tag: releases/gcc-9.2.0~152
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=da6e9b0c2306541b9740873e320370fe815b6cd7;p=thirdparty%2Fgcc.git

Turn off ipa-ra in builtins test (PR91059)

The gcc.c-torture/execute/builtins/lib directory contains a reimplementation
of many C library string functions, which causes non-trivial register allocation
bugs with LTO and static linked libraries.  To fix this long-standing test issue,
turn off ipa-ra which avoids the register corruption across calls.  All builtin
torture tests now pass on aarch64-none-elf.  Committed as obvious.
See PR78529 for more details.

    testsuite/
	PR testsuite/78529
	* gcc.c-torture/execute/builtins/builtins.exp: Add -fno-ipa-ra.

From-SVN: r273452
---

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 7510eb2ef994..63ba0ed85587 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2019-07-12  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	PR testsuite/78529
+	* gcc.c-torture/execute/builtins/builtins.exp: Add -fno-ipa-ra.
+
 2019-07-12  Richard Biener  <rguenther@suse.de>
 
 	Backport from mainline
diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp b/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp
index 5e899d5e31e7..acb9eacb4244 100644
--- a/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp
+++ b/gcc/testsuite/gcc.c-torture/execute/builtins/builtins.exp
@@ -37,7 +37,7 @@ load_lib c-torture.exp
 torture-init
 set-torture-options $C_TORTURE_OPTIONS {{}} $LTO_TORTURE_OPTIONS
 
-set additional_flags "-fno-tree-loop-distribute-patterns -fno-tracer"
+set additional_flags "-fno-tree-loop-distribute-patterns -fno-tracer -fno-ipa-ra"
 if [istarget "powerpc-*-darwin*"] {
    lappend additional_flags "-Wl,-multiply_defined,suppress"
 }