BACKPORT: kbuild: gcov: enable -fno-tree-loop-im if supported
Clang does not recognize this compiler option.
Reported-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked from commit c64ba044ed57ea72cc1c7b14a8dcfb6ded5a759c)
Bug: 122733725
Test: defconfig + CONFIG_GCOV_KERNEL records coverage
Change-Id: I334ebf83a9209d1e4a3e29ee12279f36f7afecdd
diff --git a/Makefile b/Makefile
index 1ca6a72..4d60703 100644
--- a/Makefile
+++ b/Makefile
@@ -636,7 +636,9 @@
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
KBUILD_AFLAGS += $(call cc-option,-fno-PIE)
-CFLAGS_GCOV := -fprofile-arcs -ftest-coverage -fno-tree-loop-im $(call cc-disable-warning,maybe-uninitialized,)
+CFLAGS_GCOV := -fprofile-arcs -ftest-coverage \
+ $(call cc-option,-fno-tree-loop-im) \
+ $(call cc-disable-warning,maybe-uninitialized,)
CFLAGS_KCOV := $(call cc-option,-fsanitize-coverage=trace-pc,)
export CFLAGS_GCOV CFLAGS_KCOV