RISC-V: Suppress the vsetvl fusion for conflict successors
Update in v2: Add dump information.
This patch fixes the following ineffective vsetvl insertion:
void f (int32_t * restrict in, int32_t * restrict out, size_t n, size_t cond, size_t cond2)
{
for (size_t i = 0; i < n; i++)
{
if (i == cond) {
vint8mf8_t v = *(vint8mf8_t*)(in + i + 100);
*(vint8mf8_t*)(out + i + 100) = v;
} else if (i == cond2) {
vfloat32mf2_t v = *(vfloat32mf2_t*)(in + i + 200);
*(vfloat32mf2_t*)(out + i + 200) = v;
} else if (i == (cond2 - 1)) {
vuint16mf2_t v = *(vuint16mf2_t*)(in + i + 300);
*(vuint16mf2_t*)(out + i + 300) = v;
} else {
vint8mf4_t v = *(vint8mf4_t*)(in + i + 400);
*(vint8mf4_t*)(out + i + 400) = v;
}
}
}