diff options
Diffstat (limited to 'gitlab/issues_text/target_riscv/host_missing/accel_TCG/1441')
| -rw-r--r-- | gitlab/issues_text/target_riscv/host_missing/accel_TCG/1441 | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1441 b/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1441 deleted file mode 100644 index d6a5659b0..000000000 --- a/gitlab/issues_text/target_riscv/host_missing/accel_TCG/1441 +++ /dev/null @@ -1,34 +0,0 @@ -Assertion failure when executing RISC-V vfncvt.rtz.x.f.w instruction -Description of problem: -When emulating the `vfncvt.rtz.x.f.w` instruction, QEMU crashes with an assertion failure at `target/riscv/translate.c:211`, complaining that ```decode_save_opc: Assertion `ctx->insn_start != NULL' failed.``` - -It appears this problem first emerged with https://gitlab.com/qemu-project/qemu/-/commit/a9814e3e08d2aacbd9018c36c77c2fb652537848 -Steps to reproduce: -The following C program triggers the assertion failure when built a sufficiently recent version of the Clang cross compiler (in my case 15.0.6): -``` -/* test.c */ -#include <riscv_vector.h> - -#define LEN 4 - -int main(int argc, char *argv[]) { - double in[LEN]; - int out[LEN]; - - vfloat64m1_t vf = vle64_v_f64m1(in, LEN); - vint32mf2_t vi = vfncvt_rtz_x_f_w_i32mf2(vf, LEN); - vse32_v_i32mf2(out, vi, LEN); - - return 0; -} -``` - -The above `test.c` can be compiled and run as follows: -``` -clang -O3 -march=rv64gcv -static test.c -qemu-riscv64 -cpu "rv64,zba=true,zbb=true,zbc=true,zbs=true,v=true,vlen=512,elen=64,vext_spec=v1.0" a.out -qemu-riscv64: ../target/riscv/translate.c:211: decode_save_opc: Assertion `ctx->insn_start != NULL' failed. -Segmentation fault (core dumped) -``` -Additional information: - |