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[dev.link] cmd/link, cmd/compile: create content addressable pcdata syms

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Switch pcdata over to content addressable symbols. This is the last
step before removing these from pclntab_old.

No meaningful benchmarks changes come from this work.

Change-Id: I3f74f3d6026a278babe437c8010e22992c92bd89
Reviewed-on: https://go-review.googlesource.com/c/go/+/247399
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
This commit is contained in:
Jeremy Faller 2020-08-07 11:31:20 -04:00
parent 954db9fe51
commit 5387cdcb24
10 changed files with 181 additions and 131 deletions
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2
src/cmd/link/internal/ld/lib.go
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@ -2252,7 +2252,7 @@ func (sc *stkChk) check(up *chain, depth int) int {
var ch1 chain
pcsp := obj.NewPCIter(uint32(ctxt.Arch.MinLC))
ri := 0
for pcsp.Init(info.Pcsp()); !pcsp.Done; pcsp.Next() {
for pcsp.Init(ldr.Data(info.Pcsp())); !pcsp.Done; pcsp.Next() {
// pcsp.value is in effect for [pcsp.pc, pcsp.nextpc).
// Check stack size in effect for this span.