x64: Register allocation failure with simd instructions #3337
Description
I think that this is along the lines of #3160, but this input:
(module
(type (;0;) (func))
(func (;0;) (type 0)
v128.const i32x4 0x00000000 0x00000000 0x00000000 0x00000000
i64x2.extend_low_i32x4_u
v128.const i32x4 0x00000000 0x00000000 0x00000000 0x00000000
i64x2.mul
i32x4.all_true
i64.load offset=1 align=1
drop
unreachable)
(func (;1;) (type 0)
nop)
(memory (;0;) 5613 17832))yields:
$ cargo run -q reduce/test.wat --enable-all
ERROR cranelift_codegen::machinst::compile > Register allocation error for vcode
VCode_ShowWithRRU {{
Entry block: 0
Block 0:
(original IR block: block0)
(instruction range: 0 .. 13)
Inst 0: movq %rdi, %v0J
Inst 1: movq %rsi, %v1J
Inst 2: movdqa %v6V, %v7V
Inst 3: pxor %v14V, %v14V
Inst 4: pcmpeqd %v7V, %v14V
Inst 5: ptest %v14V, %v14V
Inst 6: setz %v8Jb
Inst 7: movq %v8J, %v9J
Inst 8: andq $1, %v9J
Inst 9: movl %v9Jl, %v10Jl
Inst 10: movq 36(%v0J), %v11J
Inst 11: movq 1(%v11J,%v10J,1), %v13J
Inst 12: ud2 unreachable
}}
Error: Analysis(EntryLiveinValues([v6V]))
thread '<unnamed>' panicked at 'register allocation: Analysis(EntryLiveinValues([v6V]))', cranelift/codegen/src/machinst/compile.rs:96:10
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace