SIMD precompute fuzz testcase

[kripken]

STR

BINARYEN_PASS_DEBUG=1 BINARYEN_MAX_INTERPRETER_DEPTH=1000 wasm-opt --fuzz-exec --fuzz-binary -O3 --all-features --disable-threads --disable-bulk-memory --disable-exception-handling --disable-nontrapping-float-to-int --disable-tail-call reduced.wasm

on

(module
 (type $0 (func (result i32)))
 (type $1 (func))
 (type $2 (func (param i64) (result f64)))
 (type $3 (func (param f32 v128) (result v128)))
 (type $4 (func (result v128)))
 (type $5 (func (result f64)))
 (type $6 (func (param f64 i32) (result f64)))
 (memory $0 1 1)
 (global $global$0 (mut i32) (i32.const 10))
 (func $0 (; 0 ;) (type $0) (result i32)
  (i32.const 0)
 )
 (func $1 (; 1 ;) (type $1)
  (nop)
 )
 (func $2 (; 2 ;) (type $2) (param $0 i64) (result f64)
  (f64.const 1)
 )
 (func $3 (; 3 ;) (type $3) (param $0 f32) (param $1 v128) (result v128)
  (v128.const i32x4 0x00000001 0x00000000 0x00000000 0x00000000)
 )
 (func $4 (; 4 ;) (type $4) (result v128)
  (drop
   (f64x2.extract_lane 1
    (v16x8.load_splat offset=22 align=1
     (i32.const 1)
    )
   )
  )
  (v128.const i32x4 0x00000001 0x00000000 0x00000000 0x00000000)
 )
 (func $5 (; 5 ;) (type $5) (result f64)
  (f64.const 1)
 )
 (func $6 (; 6 ;) (type $6) (param $0 f64) (param $1 i32) (result f64)
  (f64.const 1)
 )
)

Fails with

[PassRunner]   running pass: precompute-propagate...           wasm-opt: binaryen/src/wasm-interpreter.h:1091: wasm::Flow wasm::ExpressionRunner<SubType>::visitSIMDLoad(wasm::SIMDLoad*) [with SubType = wasm::PrecomputingExpressionRunner]: Assertion `false' failed.

[tlively]

Fixed by #2409.