Clang does not support implicit LMUL in the vset* instruction sequences. Introduce an explicit LMUL in the vsetivli instruction.

Signed-off-by: Charlie Jenkins charlie@rivosinc.com Fixes: 9d5328eeb185 ("riscv: selftests: Add signal handling vector tests") --- There is one more error that occurs when the test cases for riscv are compiled with llvm:

ld.lld: error: undefined symbol: putchar

...

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referenced by crt.h:69 (./../../../../include/nolibc/crt.h:69) /tmp/v_initval_nolibc-5b14c8.o:(dump) referenced by crt.h:67 (./../../../../include/nolibc/crt.h:67) /tmp/v_initval_nolibc-5b14c8.o:(dump)

This is fixed in my rework of the vector tests in a different series [1]

Link: https://patchwork.kernel.org/project/linux-riscv/patch/20240619-xtheadvector... [1] --- tools/testing/selftests/riscv/sigreturn/sigreturn.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/riscv/sigreturn/sigreturn.c b/tools/testing/selftests/riscv/sigreturn/sigreturn.c index 62397d5934f1..ed351a1cb917 100644 --- a/tools/testing/selftests/riscv/sigreturn/sigreturn.c +++ b/tools/testing/selftests/riscv/sigreturn/sigreturn.c @@ -51,7 +51,7 @@ static int vector_sigreturn(int data, void (*handler)(int, siginfo_t *, void *))

asm(".option push \n\ .option arch, +v \n\ - vsetivli x0, 1, e32, ta, ma \n\ + vsetivli x0, 1, e32, m1, ta, ma \n\ vmv.s.x v0, %1 \n\ # Generate SIGSEGV \n\ lw a0, 0(x0) \n\

--- base-commit: f2661062f16b2de5d7b6a5c42a9a5c96326b8454 change-id: 20240701-fix_sigreturn_test-47d7063ac8e6