ext_vector_type crashes on bool

[4vtomat]

The following code crashed:

$ cat fail.c

#include <stdbool.h>

typedef bool bx16 __attribute__((ext_vector_type(16)));
bx16 test(bx16 a) {
  bx16 ret;
  asm volatile ("vmand.mm %0, %1, %2" : "=vm"(ret) : "vm"(a), "vm"(a));
  return ret;
}

with command

bin/clang -target riscv64 -march=rv64gcv fail.c -S

Note: Only inline assembly with output failed, if removing ret and it won't crash.

[llvmbot]

@llvm/issue-subscribers-backend-risc-v

Author: Brandon Wu (4vtomat)

The following code crashed: ``` $ cat fail.c

#include <stdbool.h>

typedef bool bx16 attribute((ext_vector_type(16)));
bx16 test(bx16 a) {
bx16 ret;
asm volatile ("vmand.mm %0, %1, %2" : "=vm"(ret) : "vm"(a), "vm"(a));
return ret;
}

with command

bin/clang -target riscv64 -march=rv64gcv fail.c -S

Note: Only inline assembly with output failed, if removing `ret` and it won't crash.
</details>

[llvmbot]

@llvm/issue-subscribers-clang-codegen

Author: Brandon Wu (4vtomat)

The following code crashed: ``` $ cat fail.c

#include <stdbool.h>

typedef bool bx16 attribute((ext_vector_type(16)));
bx16 test(bx16 a) {
bx16 ret;
asm volatile ("vmand.mm %0, %1, %2" : "=vm"(ret) : "vm"(a), "vm"(a));
return ret;
}

with command

bin/clang -target riscv64 -march=rv64gcv fail.c -S

Note: Only inline assembly with output failed, if removing `ret` and it won't crash.
</details>

[wangpc-pp]

It is weird that this is a LLVM ERROR: out of memory: https://godbolt.org/z/jEoYGbh73