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mul256x256_512.wasm32.wat
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mul256x256_512.wasm32.wat
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(module
(memory 1)
(export "test" (func $test))
;; a = 0xc4e5f99c5d347aebd8da07cd49b7bbc32141718b520ff51d1dace098a0586acd
;; b = 0xbe568cc4c386c3d7f8d6d314fab905847fc6f60e8a9f291b00a8b82625ae9d3
;; out_expected = 0x926540c902abb5b0721647054fc0dd12b9a4a3efa81793c7bd657144377b735e1fa7d24da2c74039555a3db0e97fd1c6cf90d14cf266552bbd7cacea8269bf7
(data (;0;) (i32.const 64) "\cd\6a\58\a0\98\e0\ac\1d\1d\f5\0f\52\8b\71\41\21\c3\bb\b7\49\cd\07\da\d8\eb\7a\34\5d\9c\f9\e5\c4")
(data (;0;) (i32.const 96) "\d3\e9\5a\62\82\8b\0a\b0\91\f2\a9\e8\60\6f\fc\47\58\90\ab\4f\31\6d\8d\7f\3d\6c\38\4c\cc\68\e5\0b")
(func $test (result i64)
(local i64) ;; this local is returned to show which limb failed
i64.const 0
i64.const 64
i64.const 96
call $mul256x256_512
;; compare output to expected
block
;; test limb 0
(i32.ne (i32.load (i32.const 0)) (i32.const 2821102583))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 1
(i32.ne (i32.load (i32.const 4)) (i32.const 3151481550))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 2
(i32.ne (i32.load (i32.const 8)) (i32.const 3475400018))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 3
(i32.ne (i32.load (i32.const 12)) (i32.const 1828261140))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 4
(i32.ne (i32.load (i32.const 16)) (i32.const 244841756))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 5
(i32.ne (i32.load (i32.const 20)) (i32.const 2505417691))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 6
(i32.ne (i32.load (i32.const 24)) (i32.const 3660346371))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 7
(i32.ne (i32.load (i32.const 28)) (i32.const 3791289636))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 8
(i32.ne (i32.load (i32.const 32)) (i32.const 1131919157))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 9
(i32.ne (i32.load (i32.const 36)) (i32.const 2077644564))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 10
(i32.ne (i32.load (i32.const 40)) (i32.const 4202789180))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 11
(i32.ne (i32.load (i32.const 44)) (i32.const 731531838))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 12
(i32.ne (i32.load (i32.const 48)) (i32.const 1425804753))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 13
(i32.ne (i32.load (i32.const 52)) (i32.const 119628912))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 14
(i32.ne (i32.load (i32.const 56)) (i32.const 2418719579))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
;; test limb 15
(i32.ne (i32.load (i32.const 60)) (i32.const 153506828))
br_if 0
(local.set 0 (i64.add (i64.const 1)(local.get 0))) ;;increment
end
local.get 0 ;;return index where failed, or num_limbs if it passed
;;(i64.load (i32.const 0))
;;(i64.and (i64.load (i32.const 8)) (i64.const 0xffffffff)) ;; lower 32-bits
)
(func $mul256x256_512 (param i64 i64 i64)
(local i64 i64 i64 i64 i64 i64 i64 i64 i64 i64 i64)
;; bring a,b into locals 6-13
(i64.load (i32.wrap/i64 (i64.add (local.get 1) (i64.const 0)))) (local.set 6)
(i64.load (i32.wrap/i64 (i64.add (local.get 1) (i64.const 8)))) (local.set 7)
(i64.load (i32.wrap/i64 (i64.add (local.get 1) (i64.const 16)))) (local.set 8)
(i64.load (i32.wrap/i64 (i64.add (local.get 1) (i64.const 24)))) (local.set 9)
(i64.load (i32.wrap/i64 (i64.add (local.get 2) (i64.const 0)))) (local.set 10)
(i64.load (i32.wrap/i64 (i64.add (local.get 2) (i64.const 8)))) (local.set 11)
(i64.load (i32.wrap/i64 (i64.add (local.get 2) (i64.const 16)))) (local.set 12)
(i64.load (i32.wrap/i64 (i64.add (local.get 2) (i64.const 24)))) (local.set 13)
;; zero things
(local.set 1 (i64.const 0))
(local.set 2 (i64.const 0))
;; done initializing, now let's compute something
;; a0*b0 + carry
;; a0*b0
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 0))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b1 + a1*b0 + carry
;; a0*b1
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b0
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 4))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b2 + a1*b1 + a2*b0 + carry
;; a0*b2
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b1
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b0
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 8))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b3 + a1*b2 + a2*b1 + a3*b0 + carry
;; a0*b3
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b2
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b1
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b0
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 12))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0 + carry
;; a0*b4
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b3
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b2
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b1
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b0
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 16))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0 + carry
;; a0*b5
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b4
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b3
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b2
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b1
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b0
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 20))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0 + carry
;; a0*b6
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b5
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b4
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b3
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b2
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b1
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b0
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 24))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0 + carry
;; a0*b7
(local.set 5 (local.get 6)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a1*b6
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b5
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b4
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b3
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b2
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b1
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a7*b0
(local.set 5 (local.get 9)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 28))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + carry
;; a1*b7
(local.set 5 (local.get 6)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a2*b6
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b5
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b4
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b3
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b2
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a7*b1
(local.set 5 (local.get 9)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 10)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 32))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + carry
;; a2*b7
(local.set 5 (local.get 7)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a3*b6
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b5
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b4
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b3
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a7*b2
(local.set 5 (local.get 9)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 36))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + carry
;; a3*b7
(local.set 5 (local.get 7)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a4*b6
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b5
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b4
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a7*b3
(local.set 5 (local.get 9)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 11)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 40))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a4*b7 + a5*b6 + a6*b5 + a7*b4 + carry
;; a4*b7
(local.set 5 (local.get 8)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a5*b6
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b5
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a7*b4
(local.set 5 (local.get 9)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 12)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; write result for this limb, prepare for next limb
(i32.store (i32.wrap/i64 (i64.add (local.get 0) (i64.const 44))) (i32.wrap/i64 (local.get 1)) ) ;; write result for this 32-bit limb
(i64.shr_u (local.get 1) (i64.const 32)) (local.set 1) ;; the upper 32-bits is carry
(i64.shl (local.get 2) (i64.const 32)) (local.set 2) ;; overflow is in upper 32-bits
(i64.add (local.get 1) (local.get 2)) (local.set 1) ;; add overflow of carry
(local.set 2 (i64.const 0)) ;; re-init overflow to zero
;; a5*b7 + a6*b6 + a7*b5 + carry
;; a5*b7
(local.set 5 (local.get 8)) ;; bring a to workspace
(i64.shr_u (local.get 5) (i64.const 32)) (local.set 5) ;; get upper 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i64.shr_u (local.get 4) (i64.const 32)) (local.set 4) ;; get upper 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero
;; a6*b6
(local.set 5 (local.get 9)) ;; bring a to workspace
(i32.wrap/i64 (local.get 5)) (i64.extend_i32_u) (local.set 5) ;; get lower 32-bits
(local.set 4 (local.get 13)) ;; bring b to workspace
(i32.wrap/i64 (local.get 4)) (i64.extend_i32_u) (local.set 4) ;; get lower 32-bits
(i64.mul (local.get 4) (local.get 5)) (local.set 4) ;; multiply
(local.set 3 (local.get 4)) ;; remove dependancy from local 4
(i64.add (local.get 3) (local.get 1)) (local.set 1) ;; add to accumulator t1
(i64.gt_u (local.get 3) (local.get 1)) (local.set 3 (i64.extend_i32_u)) ;; compare l1 and t3
(i64.add (local.get 2) (local.get 3)) (local.set 2) ;; add to overflow, even if add zero