LLVM crashes when using prefetch_read_instruction

[Voultapher]

Code

#![feature(core_intrinsics)]

pub fn x(data: *const u64) {
    unsafe {
        core::intrinsics::prefetch_read_instruction(data, 3);
    }
}

Meta=

rustc --version --verbose:

rustc 1.71.0-nightly (521f4dae1 2023-05-19)
binary: rustc
commit-hash: 521f4dae1bdf7fe9cf9436ecef9ee7c7442708bf
commit-date: 2023-05-19
host: x86_64-unknown-linux-gnu
release: 1.71.0-nightly
LLVM version: 16.0.4
Compiler returned: 0

Error output

LLVM ERROR: Cannot select: 0x7f3d820ff1c0: ch = Prefetch<(load (s8) from %ir.0)> 0x7f3d8207c460, 0x7f3d820ff070, Constant:i32<0>, Constant:i32<3>, Constant:i32<0>, example.rs:5:9
  0x7f3d820ff070: i64,ch = CopyFromReg 0x7f3d8207c460, Register:i64 %1, example.rs:5:9
    0x7f3d820ff000: i64 = Register %1
  0x7f3d820ff0e0: i32 = Constant<0>
  0x7f3d820ff150: i32 = Constant<3>
  0x7f3d820ff0e0: i32 = Constant<0>
In function: _ZN7example1x17h72659061d1989aabE
Compiler returned: 101

[Sp00ph]

Note that this doesn't seem to be rustc's fault: https://llvm.godbolt.org/z/8KPcn46r1 , so an LLVM issue would probably also be good. Interestingly, it compiles just fine on aarch64, and it also compiles on x86 when you change the third argument of the LLVM intrinsic from 0 (icache) to 1 (dcache).

[Voultapher]

I've submitted it to LLVM. Much nicer now that they use GitHub instead of bugzilla.

[Noratrieb]

@rustbot assign @nikic
Assigning it for closing the issue on the next LLVM upgrade that includes the patch.

[matthiaskrgr]

Seems similar to tests/codegen/intrinsics/prefetch.rs which also causes llvm errors by default.