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cmd/compile: remove go119UseJumpTables flag

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Change-Id: Iaaac46e96b74289096ce0c6186c73000d1fc6faa
Reviewed-on: https://go-review.googlesource.com/c/go/+/463224
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
This commit is contained in:
Keith Randall 2023-01-26 14:43:12 -08:00 committed by Keith Randall
parent 5ad799ef8a
commit 4e3abee245
1 changed files with 1 additions and 2 deletions
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3
src/cmd/compile/internal/walk/switch.go
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@ -286,11 +286,10 @@ func (s *exprSwitch) search(cc []exprClause, out *ir.Nodes) {
// Try to implement the clauses with a jump table. Returns true if successful.
func (s *exprSwitch) tryJumpTable(cc []exprClause, out *ir.Nodes) bool {
const go119UseJumpTables = true
const minCases = 8 // have at least minCases cases in the switch
const minDensity = 4 // use at least 1 out of every minDensity entries
if !go119UseJumpTables || base.Flag.N != 0 || !ssagen.Arch.LinkArch.CanJumpTable || base.Ctxt.Retpoline {
if base.Flag.N != 0 || !ssagen.Arch.LinkArch.CanJumpTable || base.Ctxt.Retpoline {
return false
}
if len(cc) < minCases {