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| author | Nicolas Boichat <drinkcat@chromium.org> | 2020-12-29 14:57:37 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-12-29 10:19:15 +0000 |
| commit | fd092935f365e608c9b4825b7b53b355e58a1a61 (patch) | |
| tree | 47317609958d14f5e73adf310130f2789e011022 | |
| parent | 5213877f265446c9cc7b3d0fed10b3a98ebf11d8 (diff) | |
| download | chrome-ec-fd092935f365e608c9b4825b7b53b355e58a1a61.tar.gz | |
core/riscv-rv32i: Make it possible to enable LTO
This is especially useful to reduce the total code size if
we enable division by zero UBSAN.
BRANCH=none
BUG=b:173969773
TEST=Enable on asurada[_scp], boot
Change-Id: I86212a5834e5dd86e75bc3247f4365a6e102c45e
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2605037
Reviewed-by: Tzung-Bi Shih <tzungbi@chromium.org>
Reviewed-by: Eric Yilun Lin <yllin@chromium.org>
| -rw-r--r-- | core/riscv-rv32i/build.mk | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/core/riscv-rv32i/build.mk b/core/riscv-rv32i/build.mk index a69e2ecafc..76a318a500 100644 --- a/core/riscv-rv32i/build.mk +++ b/core/riscv-rv32i/build.mk @@ -17,4 +17,9 @@ CFLAGS_CPU+=-march=rv32ima$(_FPU_EXTENSION)c -mabi=ilp32$(_FPU_EXTENSION) -Os LDFLAGS_EXTRA+=-mrelax LDFLAGS_EXTRA+=-static-libgcc -lgcc +ifneq ($(CONFIG_LTO),) +CFLAGS_CPU+=-flto +LDFLAGS_EXTRA+=-flto +endif + core-y=cpu.o init.o panic.o task.o switch.o __builtin.o math.o |