;;; TOOL: run-objdump
;;; ARGS0: -v --enable-sign-extension
(module
  (func
    i32.const 0
    i32.extend8_s
    drop

    i32.const 0
    i32.extend16_s
    drop

    i64.const 0
    i64.extend8_s
    drop

    i64.const 0
    i64.extend16_s
    drop

    i64.const 0
    i64.extend32_s
    drop))
(;; STDOUT ;;;
0000000: 0061 736d                                 ; WASM_BINARY_MAGIC
0000004: 0100 0000                                 ; WASM_BINARY_VERSION
; section "Type" (1)
0000008: 01                                        ; section code
0000009: 00                                        ; section size (guess)
000000a: 01                                        ; num types
; type 0
000000b: 60                                        ; func
000000c: 00                                        ; num params
000000d: 00                                        ; num results
0000009: 04                                        ; FIXUP section size
; section "Function" (3)
000000e: 03                                        ; section code
000000f: 00                                        ; section size (guess)
0000010: 01                                        ; num functions
0000011: 00                                        ; function 0 signature index
000000f: 02                                        ; FIXUP section size
; section "Code" (10)
0000012: 0a                                        ; section code
0000013: 00                                        ; section size (guess)
0000014: 01                                        ; num functions
; function body 0
0000015: 00                                        ; func body size (guess)
0000016: 00                                        ; local decl count
0000017: 41                                        ; i32.const
0000018: 00                                        ; i32 literal
0000019: c0                                        ; i32.extend8_s
000001a: 1a                                        ; drop
000001b: 41                                        ; i32.const
000001c: 00                                        ; i32 literal
000001d: c1                                        ; i32.extend16_s
000001e: 1a                                        ; drop
000001f: 42                                        ; i64.const
0000020: 00                                        ; i64 literal
0000021: c2                                        ; i64.extend8_s
0000022: 1a                                        ; drop
0000023: 42                                        ; i64.const
0000024: 00                                        ; i64 literal
0000025: c3                                        ; i64.extend16_s
0000026: 1a                                        ; drop
0000027: 42                                        ; i64.const
0000028: 00                                        ; i64 literal
0000029: c4                                        ; i64.extend32_s
000002a: 1a                                        ; drop
000002b: 0b                                        ; end
0000015: 16                                        ; FIXUP func body size
0000013: 18                                        ; FIXUP section size

unary-extend.wasm:	file format wasm 0x1

Code Disassembly:

000016 func[0]:
 000017: 41 00                      | i32.const 0
 000019: c0                         | i32.extend8_s
 00001a: 1a                         | drop
 00001b: 41 00                      | i32.const 0
 00001d: c1                         | i32.extend16_s
 00001e: 1a                         | drop
 00001f: 42 00                      | i64.const 0
 000021: c2                         | i64.extend8_s
 000022: 1a                         | drop
 000023: 42 00                      | i64.const 0
 000025: c3                         | i64.extend16_s
 000026: 1a                         | drop
 000027: 42 00                      | i64.const 0
 000029: c4                         | i64.extend32_s
 00002a: 1a                         | drop
 00002b: 0b                         | end
;;; STDOUT ;;)