[PATCH] riscv: don't specify -mno-save-restore when building with clang

[Tobias Klauser]

Clang doesn't support -msave-restore and -mno-save-restore. This avoids
the following message emitted by clang:

  '-save-restore' is not a recognized feature for this target (ignoring feature)

Signed-off-by: Tobias Klauser <tklauser at distanz.ch>
---
 arch/riscv/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile
index fb6e37db836d..cd3720bc45e8 100644
--- a/arch/riscv/Makefile
+++ b/arch/riscv/Makefile
@@ -44,7 +44,9 @@ riscv-march-$(CONFIG_RISCV_ISA_C)	:= $(riscv-march-y)c
 KBUILD_CFLAGS += -march=$(subst fd,,$(riscv-march-y))
 KBUILD_AFLAGS += -march=$(riscv-march-y)
 
+ifndef CONFIG_CC_IS_CLANG
 KBUILD_CFLAGS += -mno-save-restore
+endif
 KBUILD_CFLAGS += -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET)
 
 ifeq ($(CONFIG_CMODEL_MEDLOW),y)
-- 
2.27.0