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wasm-intrinsics.wat
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wasm-intrinsics.wat
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;; A large WAST blob which contains the implementations of all the intrinsics
;; that we inject as part of this module. This blob was generated from a Rust
;; program [1] which uses the Rust compiler-builtins project. It's not
;; necessarily perfect but gets the job done! The idea here is that we inject
;; these pretty early so they can continue to be optimized by further passes
;; (aka inlining and whatnot)
;;
;; LOCAL MODS done by hand afterwards:
;; * Remove hardcoded address 1024 which was used for temporary data; instead
;; add $wasm-intrinsics-temp-i64 global for that.
;; * Fix function type of __wasm_ctz_i64, which was wrong somehow,
;; i32, i32 => i32 instead of i64 => i64
;; * Remove unnecessary memory import.
;;
;; [1]: https://gist.github.com/alexcrichton/e7ea67bcdd17ce4b6254e66f77165690
(module
(type $0 (func (param i64 i64) (result i64)))
(type $1 (func (param f32) (result f32)))
(type $2 (func (param f64) (result f64)))
(type $3 (func (param i32) (result i32)))
(type $4 (func (param i32 i32) (result i32)))
(type $5 (func (param i64) (result i64)))
(export "__wasm_i64_sdiv" (func $__wasm_i64_sdiv))
(export "__wasm_i64_udiv" (func $__wasm_i64_udiv))
(export "__wasm_i64_srem" (func $__wasm_i64_srem))
(export "__wasm_i64_urem" (func $__wasm_i64_urem))
(export "__wasm_i64_mul" (func $__wasm_i64_mul))
(export "__wasm_ctz_i32" (func $__wasm_ctz_i32))
(export "__wasm_ctz_i64" (func $__wasm_ctz_i64))
(export "__wasm_rotl_i32" (func $__wasm_rotl_i32))
(export "__wasm_rotr_i32" (func $__wasm_rotr_i32))
(export "__wasm_rotl_i64" (func $__wasm_rotl_i64))
(export "__wasm_rotr_i64" (func $__wasm_rotr_i64))
(export "__wasm_nearest_f32" (func $__wasm_nearest_f32))
(export "__wasm_nearest_f64" (func $__wasm_nearest_f64))
(export "__wasm_popcnt_i32" (func $__wasm_popcnt_i32))
(export "__wasm_popcnt_i64" (func $__wasm_popcnt_i64))
(global $__wasm-intrinsics-temp-i64 (mut i64) (i64.const 0))
;; lowering of the i32.popcnt instruction, counts the number of bits set in the
;; input and returns the result
(func $__wasm_popcnt_i32 (param $var$0 i32) (result i32)
(local $var$1 i32)
(block $label$1 (result i32)
(loop $label$2
(drop
(br_if $label$1
(local.get $var$1)
(i32.eqz
(local.get $var$0)
)
)
)
(local.set $var$0
(i32.and
(local.get $var$0)
(i32.sub
(local.get $var$0)
(i32.const 1)
)
)
)
(local.set $var$1
(i32.add
(local.get $var$1)
(i32.const 1)
)
)
(br $label$2)
)
)
)
;; lowering of the i64.popcnt instruction, counts the number of bits set in the
;; input and returns the result
(func $__wasm_popcnt_i64 (param $var$0 i64) (result i64)
(local $var$1 i64)
(block $label$1 (result i64)
(loop $label$2
(drop
(br_if $label$1
(local.get $var$1)
(i64.eqz
(local.get $var$0)
)
)
)
(local.set $var$0
(i64.and
(local.get $var$0)
(i64.sub
(local.get $var$0)
(i64.const 1)
)
)
)
(local.set $var$1
(i64.add
(local.get $var$1)
(i64.const 1)
)
)
(br $label$2)
)
)
)
;; lowering of the i64.div_s instruction, return $var0 / $var$1
(func $__wasm_i64_sdiv (; 0 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(call $_ZN17compiler_builtins3int4sdiv3Div3div17he78fc483e41d7ec7E
(local.get $var$0)
(local.get $var$1)
)
)
;; lowering of the i64.div_u instruction, return $var0 / $var$1
(func $__wasm_i64_udiv (; 1 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(call $_ZN17compiler_builtins3int4udiv10divmod_u6417h6026910b5ed08e40E
(local.get $var$0)
(local.get $var$1)
)
)
;; lowering of the i64.rem_s instruction, return $var0 % $var$1
(func $__wasm_i64_srem (; 2 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(call $_ZN17compiler_builtins3int4sdiv3Mod4mod_17h2cbb7bbf36e41d68E
(local.get $var$0)
(local.get $var$1)
)
)
;; lowering of the i64.rem_u instruction, return $var0 % $var$1
(func $__wasm_i64_urem (; 3 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(drop
(call $_ZN17compiler_builtins3int4udiv10divmod_u6417h6026910b5ed08e40E
(local.get $var$0)
(local.get $var$1)
)
)
(global.get $__wasm-intrinsics-temp-i64)
)
;; lowering of the i64.mul instruction, return $var0 * $var$1
(func $__wasm_i64_mul (; 4 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(call $_ZN17compiler_builtins3int3mul3Mul3mul17h070e9a1c69faec5bE
(local.get $var$0)
(local.get $var$1)
)
)
;; lowering of the i32.ctz instruction, counting the number of zeros in $var$0
(func $__wasm_ctz_i32 (; 7 ;) (type $3) (param $var$0 i32) (result i32)
(if
(local.get $var$0)
(return
(i32.sub
(i32.const 31)
(i32.clz
(i32.xor
(i32.add
(local.get $var$0)
(i32.const -1)
)
(local.get $var$0)
)
)
)
)
)
(i32.const 32)
)
;; lowering of the i64.ctz instruction, counting the number of zeros in $var$0
(func $__wasm_ctz_i64 (; 8 ;) (type $5) (param $var$0 i64) (result i64)
(if
(i32.eqz
(i64.eqz
(local.get $var$0)
)
)
(return
(i64.sub
(i64.const 63)
(i64.clz
(i64.xor
(i64.add
(local.get $var$0)
(i64.const -1)
)
(local.get $var$0)
)
)
)
)
)
(i64.const 64)
)
;; lowering of the i32.rotl instruction, rotating the first argument, with
;; wraparound, by the second argument
(func $__wasm_rotl_i32 (; 8 ;) (type $4) (param $var$0 i32) (param $var$1 i32) (result i32)
(local $var$2 i32)
(i32.or
(i32.shl
(i32.and
(i32.shr_u
(i32.const -1)
(local.tee $var$2
(i32.and
(local.get $var$1)
(i32.const 31)
)
)
)
(local.get $var$0)
)
(local.get $var$2)
)
(i32.shr_u
(i32.and
(i32.shl
(i32.const -1)
(local.tee $var$1
(i32.and
(i32.sub
(i32.const 0)
(local.get $var$1)
)
(i32.const 31)
)
)
)
(local.get $var$0)
)
(local.get $var$1)
)
)
)
;; lowering of the i32.rotr instruction, rotating the first argument, with
;; wraparound, by the second argument
(func $__wasm_rotr_i32 (; 9 ;) (type $4) (param $var$0 i32) (param $var$1 i32) (result i32)
(local $var$2 i32)
(i32.or
(i32.shr_u
(i32.and
(i32.shl
(i32.const -1)
(local.tee $var$2
(i32.and
(local.get $var$1)
(i32.const 31)
)
)
)
(local.get $var$0)
)
(local.get $var$2)
)
(i32.shl
(i32.and
(i32.shr_u
(i32.const -1)
(local.tee $var$1
(i32.and
(i32.sub
(i32.const 0)
(local.get $var$1)
)
(i32.const 31)
)
)
)
(local.get $var$0)
)
(local.get $var$1)
)
)
)
;; lowering of the i64.rotl instruction, rotating the first argument, with
;; wraparound, by the second argument
(func $__wasm_rotl_i64 (; 10 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(local $var$2 i64)
(i64.or
(i64.shl
(i64.and
(i64.shr_u
(i64.const -1)
(local.tee $var$2
(i64.and
(local.get $var$1)
(i64.const 63)
)
)
)
(local.get $var$0)
)
(local.get $var$2)
)
(i64.shr_u
(i64.and
(i64.shl
(i64.const -1)
(local.tee $var$1
(i64.and
(i64.sub
(i64.const 0)
(local.get $var$1)
)
(i64.const 63)
)
)
)
(local.get $var$0)
)
(local.get $var$1)
)
)
)
;; lowering of the i64.rotr instruction, rotating the first argument, with
;; wraparound, by the second argument
(func $__wasm_rotr_i64 (; 11 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(local $var$2 i64)
(i64.or
(i64.shr_u
(i64.and
(i64.shl
(i64.const -1)
(local.tee $var$2
(i64.and
(local.get $var$1)
(i64.const 63)
)
)
)
(local.get $var$0)
)
(local.get $var$2)
)
(i64.shl
(i64.and
(i64.shr_u
(i64.const -1)
(local.tee $var$1
(i64.and
(i64.sub
(i64.const 0)
(local.get $var$1)
)
(i64.const 63)
)
)
)
(local.get $var$0)
)
(local.get $var$1)
)
)
)
;; lowering of the f32.nearest instruction, rounding the input to the nearest
;; integer while breaking ties by rounding to even
(func $__wasm_nearest_f32 (; 12 ;) (type $1) (param $var$0 f32) (result f32)
(local $var$1 f32)
(local $var$2 f32)
(if
(i32.eqz
(f32.lt
(local.tee $var$2
(f32.sub
(local.get $var$0)
(local.tee $var$1
(f32.floor
(local.get $var$0)
)
)
)
)
(f32.const 0.5)
)
)
(block
(local.set $var$0
(f32.ceil
(local.get $var$0)
)
)
(if
(f32.gt
(local.get $var$2)
(f32.const 0.5)
)
(return
(local.get $var$0)
)
)
(local.set $var$1
(select
(local.get $var$1)
(local.get $var$0)
(f32.eq
(f32.sub
(local.tee $var$2
(f32.mul
(local.get $var$1)
(f32.const 0.5)
)
)
(f32.floor
(local.get $var$2)
)
)
(f32.const 0)
)
)
)
)
)
(local.get $var$1)
)
;; lowering of the f64.nearest instruction, rounding the input to the nearest
;; integer while breaking ties by rounding to even
(func $__wasm_nearest_f64 (; 13 ;) (type $2) (param $var$0 f64) (result f64)
(local $var$1 f64)
(local $var$2 f64)
(if
(i32.eqz
(f64.lt
(local.tee $var$2
(f64.sub
(local.get $var$0)
(local.tee $var$1
(f64.floor
(local.get $var$0)
)
)
)
)
(f64.const 0.5)
)
)
(block
(local.set $var$0
(f64.ceil
(local.get $var$0)
)
)
(if
(f64.gt
(local.get $var$2)
(f64.const 0.5)
)
(return
(local.get $var$0)
)
)
(local.set $var$1
(select
(local.get $var$1)
(local.get $var$0)
(f64.eq
(f64.sub
(local.tee $var$2
(f64.mul
(local.get $var$1)
(f64.const 0.5)
)
)
(f64.floor
(local.get $var$2)
)
)
(f64.const 0)
)
)
)
)
)
(local.get $var$1)
)
(func $_ZN17compiler_builtins3int4udiv10divmod_u6417h6026910b5ed08e40E (; 14 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(local $var$2 i32)
(local $var$3 i32)
(local $var$4 i32)
(local $var$5 i64)
(local $var$6 i64)
(local $var$7 i64)
(local $var$8 i64)
(block $label$1
(block $label$2
(block $label$3
(block $label$4
(block $label$5
(block $label$6
(block $label$7
(block $label$8
(block $label$9
(block $label$10
(block $label$11
(if
(local.tee $var$2
(i32.wrap_i64
(i64.shr_u
(local.get $var$0)
(i64.const 32)
)
)
)
(block
(br_if $label$11
(i32.eqz
(local.tee $var$3
(i32.wrap_i64
(local.get $var$1)
)
)
)
)
(br_if $label$9
(i32.eqz
(local.tee $var$4
(i32.wrap_i64
(i64.shr_u
(local.get $var$1)
(i64.const 32)
)
)
)
)
)
(br_if $label$8
(i32.le_u
(local.tee $var$2
(i32.sub
(i32.clz
(local.get $var$4)
)
(i32.clz
(local.get $var$2)
)
)
)
(i32.const 31)
)
)
(br $label$2)
)
)
(br_if $label$2
(i64.ge_u
(local.get $var$1)
(i64.const 4294967296)
)
)
(global.set $__wasm-intrinsics-temp-i64
(i64.extend_i32_u
(i32.sub
(local.tee $var$2
(i32.wrap_i64
(local.get $var$0)
)
)
(i32.mul
(local.tee $var$2
(i32.div_u
(local.get $var$2)
(local.tee $var$3
(i32.wrap_i64
(local.get $var$1)
)
)
)
)
(local.get $var$3)
)
)
)
)
(return
(i64.extend_i32_u
(local.get $var$2)
)
)
)
(local.set $var$3
(i32.wrap_i64
(i64.shr_u
(local.get $var$1)
(i64.const 32)
)
)
)
(br_if $label$7
(i32.eqz
(i32.wrap_i64
(local.get $var$0)
)
)
)
(br_if $label$6
(i32.eqz
(local.get $var$3)
)
)
(br_if $label$6
(i32.and
(local.tee $var$4
(i32.add
(local.get $var$3)
(i32.const -1)
)
)
(local.get $var$3)
)
)
(global.set $__wasm-intrinsics-temp-i64
(i64.or
(i64.shl
(i64.extend_i32_u
(i32.and
(local.get $var$4)
(local.get $var$2)
)
)
(i64.const 32)
)
(i64.and
(local.get $var$0)
(i64.const 4294967295)
)
)
)
(return
(i64.extend_i32_u
(i32.shr_u
(local.get $var$2)
(i32.and
(i32.ctz
(local.get $var$3)
)
(i32.const 31)
)
)
)
)
)
(unreachable)
)
(br_if $label$5
(i32.eqz
(i32.and
(local.tee $var$4
(i32.add
(local.get $var$3)
(i32.const -1)
)
)
(local.get $var$3)
)
)
)
(local.set $var$3
(i32.sub
(i32.const 0)
(local.tee $var$2
(i32.sub
(i32.add
(i32.clz
(local.get $var$3)
)
(i32.const 33)
)
(i32.clz
(local.get $var$2)
)
)
)
)
)
(br $label$3)
)
(local.set $var$3
(i32.sub
(i32.const 63)
(local.get $var$2)
)
)
(local.set $var$2
(i32.add
(local.get $var$2)
(i32.const 1)
)
)
(br $label$3)
)
(global.set $__wasm-intrinsics-temp-i64
(i64.shl
(i64.extend_i32_u
(i32.sub
(local.get $var$2)
(i32.mul
(local.tee $var$4
(i32.div_u
(local.get $var$2)
(local.get $var$3)
)
)
(local.get $var$3)
)
)
)
(i64.const 32)
)
)
(return
(i64.extend_i32_u
(local.get $var$4)
)
)
)
(br_if $label$4
(i32.lt_u
(local.tee $var$2
(i32.sub
(i32.clz
(local.get $var$3)
)
(i32.clz
(local.get $var$2)
)
)
)
(i32.const 31)
)
)
(br $label$2)
)
(global.set $__wasm-intrinsics-temp-i64
(i64.extend_i32_u
(i32.and
(local.get $var$4)
(i32.wrap_i64
(local.get $var$0)
)
)
)
)
(br_if $label$1
(i32.eq
(local.get $var$3)
(i32.const 1)
)
)
(return
(i64.shr_u
(local.get $var$0)
(i64.extend_i32_u
(i32.ctz
(local.get $var$3)
)
)
)
)
)
(local.set $var$3
(i32.sub
(i32.const 63)
(local.get $var$2)
)
)
(local.set $var$2
(i32.add
(local.get $var$2)
(i32.const 1)
)
)
)
(local.set $var$5
(i64.shr_u
(local.get $var$0)
(i64.extend_i32_u
(i32.and
(local.get $var$2)
(i32.const 63)
)
)
)
)
(local.set $var$0
(i64.shl
(local.get $var$0)
(i64.extend_i32_u
(i32.and
(local.get $var$3)
(i32.const 63)
)
)
)
)
(block $label$13
(if
(local.get $var$2)
(block
(local.set $var$8
(i64.add
(local.get $var$1)
(i64.const -1)
)
)
(loop $label$15
(local.set $var$5
(i64.sub
(local.tee $var$5
(i64.or
(i64.shl
(local.get $var$5)
(i64.const 1)
)
(i64.shr_u
(local.get $var$0)
(i64.const 63)
)
)
)
(i64.and
(local.tee $var$6
(i64.shr_s
(i64.sub
(local.get $var$8)
(local.get $var$5)
)
(i64.const 63)
)
)
(local.get $var$1)
)
)
)
(local.set $var$0
(i64.or
(i64.shl
(local.get $var$0)
(i64.const 1)
)
(local.get $var$7)
)
)
(local.set $var$7
(local.tee $var$6
(i64.and
(local.get $var$6)
(i64.const 1)
)
)
)
(br_if $label$15
(local.tee $var$2
(i32.add
(local.get $var$2)
(i32.const -1)
)
)
)
)
(br $label$13)
)
)
)
(global.set $__wasm-intrinsics-temp-i64
(local.get $var$5)
)
(return
(i64.or
(i64.shl
(local.get $var$0)
(i64.const 1)
)
(local.get $var$6)
)
)
)
(global.set $__wasm-intrinsics-temp-i64
(local.get $var$0)
)
(local.set $var$0
(i64.const 0)
)
)
(local.get $var$0)
)
(func $_ZN17compiler_builtins3int3mul3Mul3mul17h070e9a1c69faec5bE (; 15 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)
(local $var$2 i32)
(local $var$3 i32)
(local $var$4 i32)
(local $var$5 i32)
(local $var$6 i32)
(i64.or
(i64.shl
(i64.extend_i32_u
(i32.add
(i32.add
(i32.add
(i32.add
(i32.mul
(local.tee $var$4
(i32.shr_u
(local.tee $var$2
(i32.wrap_i64
(local.get $var$1)
)
)
(i32.const 16)
)
)
(local.tee $var$5
(i32.shr_u
(local.tee $var$3
(i32.wrap_i64
(local.get $var$0)
)
)
(i32.const 16)
)
)
)
(i32.mul
(local.get $var$2)
(i32.wrap_i64
(i64.shr_u
(local.get $var$0)
(i64.const 32)
)
)
)
)
(i32.mul
(i32.wrap_i64
(i64.shr_u
(local.get $var$1)
(i64.const 32)
)
)
(local.get $var$3)
)
)
(i32.shr_u
(local.tee $var$2
(i32.add
(i32.shr_u
(local.tee $var$6
(i32.mul
(local.tee $var$2
(i32.and
(local.get $var$2)
(i32.const 65535)
)
)
(local.tee $var$3
(i32.and
(local.get $var$3)
(i32.const 65535)
)
)
)
)
(i32.const 16)
)
(i32.mul
(local.get $var$2)
(local.get $var$5)
)
)
)
(i32.const 16)
)
)
(i32.shr_u
(local.tee $var$2
(i32.add
(i32.and
(local.get $var$2)
(i32.const 65535)
)
(i32.mul
(local.get $var$4)
(local.get $var$3)
)
)
)
(i32.const 16)
)
)
)
(i64.const 32)
)
(i64.extend_i32_u
(i32.or
(i32.shl
(local.get $var$2)
(i32.const 16)
)
(i32.and
(local.get $var$6)
(i32.const 65535)
)
)
)
)
)
(func $_ZN17compiler_builtins3int4sdiv3Div3div17he78fc483e41d7ec7E (; 16 ;) (type $0) (param $var$0 i64) (param $var$1 i64) (result i64)