On 11/13/24 9:50 AM, Dimitar Dimitrov wrote:
When configuring GCC for RV32EC with:
./configure \
--target=riscv32-none-elf \
--with-multilib-generator="rv32ec-ilp32e--" \
--with-abi=ilp32e \
--with-arch=rv32ec
Then the build fails because division is erroneously left enabled:
cc1: error: '-mdiv' requires '-march' to subsume the 'M' extension
-fself-test: 8412281 pass(es) in 0.647173 seconds
Fix by tying both MUL and DIV option masks to the "M" standard extension
for integer multiplication and division.
Tested the above RV32EC-only toolchain using the GNU simulator:
=== gcc Summary ===
# of expected passes 211621
# of unexpected failures 3018
# of expected failures 1061
# of unresolved testcases 5651
# of unsupported tests 18958
Ok for trunk?
gcc/ChangeLog:
* common/config/riscv/riscv-common.cc: Tie both MUL and DIV to
the M extension.
Signed-off-by: Dimitar Dimitrov <dimi...@dinux.eu>
Actually, you should check these tests which the pre-commit tester flagged:
New Failures Across All Affected Targets (8 targets / 8 total targets)
FAIL: gcc.target/riscv/predef-7.c -O0 (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -O1 (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -O2 (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -O3 -g (test for excess errors)
FAIL: gcc.target/riscv/predef-7.c -Os (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O0 (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O1 (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O2 (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O2 -flto -fno-use-linker-plugin
-flto-partition=none (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -O3 -g (test for excess errors)
FAIL: gcc.target/riscv/predef-9.c -Os (test for excess errors)
Jeff
