[PATCH for 5.2 12/12] rseq/selftests: add -no-integrated-as for clang

[Mathieu Desnoyers]

Ongoing work for asm goto support from clang requires the
-no-integrated-as compiler flag.

This compiler flag is present in the toplevel kernel Makefile,
but is not replicated for selftests. Add it specifically for
the rseq selftest which requires asm goto.

Link: https://reviews.llvm.org/D56571
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
CC: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CC: Joel Fernandes <joelaf@xxxxxxxxxx>
CC: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CC: Catalin Marinas <catalin.marinas@xxxxxxx>
CC: Dave Watson <davejwatson@xxxxxx>
CC: Will Deacon <will.deacon@xxxxxxx>
CC: Shuah Khan <shuah@xxxxxxxxxx>
CC: Andi Kleen <andi@xxxxxxxxxxxxxx>
CC: linux-kselftest@xxxxxxxxxxxxxxx
CC: "H . Peter Anvin" <hpa@xxxxxxxxx>
CC: Chris Lameter <cl@xxxxxxxxx>
CC: Russell King <linux@xxxxxxxxxxxxxxxx>
CC: Michael Kerrisk <mtk.manpages@xxxxxxxxx>
CC: "Paul E . McKenney" <paulmck@xxxxxxxxxxxxxxxxxx>
CC: Paul Turner <pjt@xxxxxxxxxx>
CC: Boqun Feng <boqun.feng@xxxxxxxxx>
CC: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
CC: Steven Rostedt <rostedt@xxxxxxxxxxx>
CC: Ben Maurer <bmaurer@xxxxxx>
CC: linux-api@xxxxxxxxxxxxxxx
CC: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/rseq/Makefile | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/rseq/Makefile b/tools/testing/selftests/rseq/Makefile
index c30c52e1d0d2..d6469535630a 100644
--- a/tools/testing/selftests/rseq/Makefile
+++ b/tools/testing/selftests/rseq/Makefile
@@ -1,5 +1,11 @@
 # SPDX-License-Identifier: GPL-2.0+ OR MIT
-CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./
+
+ifneq ($(shell $(CC) --version 2>&1 | head -n 1 | grep clang),)
+CLANG_FLAGS += -no-integrated-as
+endif
+
+CFLAGS += -O2 -Wall -g -I./ -I../../../../usr/include/ -L./ -Wl,-rpath=./ \
+	  $(CLANG_FLAGS)
 LDLIBS += -lpthread
 
 # Own dependencies because we only want to build against 1st prerequisite, but
-- 
2.11.0