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Remove double lookup in ilwrite (#4787)

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Lines changed: 8 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -1638,18 +1638,16 @@ module Codebuf =`
`1638`	`1638`	`match i, tgswith`
`1639`	`1639`	`\|(_, Some i_short),[tg]`
`1640`	`1640`	`when`
`1641`		`-begin`
`1642`		`-// Use the original offsets to compute if the branch is small or large. This is`
`1643`		`-// a safe approximation because code only gets smaller.`
`1644`		`-ifnot(origAvailBrFixups.ContainsKey tg)then`
`1645`		`- dprintn("branch target"+ formatCodeLabel tg+" not found in code")`
`1646`		`-letorigDest=`
`1647`		`-match origAvailBrFixups.TryGetValue(tg)with`
	`1641`	`+// Use the original offsets to compute if the branch is small or large. This is`
	`1642`	`+// a safe approximation because code only gets smaller.`
	`1643`	`+(letorigDest=`
	`1644`	`+match origAvailBrFixups.TryGetValue tgwith`
`1648`	`1645`	`\|true, fixup-> fixup`
`1649`		`-\|_->666666`
	`1646`	`+\|_->`
	`1647`	`+ dprintn("branch target"+ formatCodeLabel tg+" not found in code")`
	`1648`	`+666666`
`1650`	`1649`	`letorigRelOffset= origDest- origEndOfInstr`
`1651`		`--128<= origRelOffset&& origRelOffset<=127`
`1652`		`-end`
	`1650`	`+-128<= origRelOffset&& origRelOffset<=127)`
`1653`	`1651`	`->`
`1654`	`1652`	`newCode.EmitIntAsByte i_short`
`1655`	`1653`	`true`

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