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cmd/compile: make stkobj symbols content-addressable

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Shrinks binaries a little bit.

size    before    after     Δ       %
api     4892370   4875858   -16512  -0.338%
asm     4711218   4694706   -16512  -0.350%
cgo     4164770   4148258   -16512  -0.396%
compile 21875922  21826386  -49536  -0.226%
cover   4358370   4341858   -16512  -0.379%
doc     3532562   3516050   -16512  -0.467%
link    6110786   6094274   -16512  -0.270%
objdump 3982914   3966402   -16512  -0.415%
pprof   12869986  12836962  -33024  -0.257%
trace   9614626   9598114   -16512  -0.172%
vet     6580322   6563810   -16512  -0.251%
total   102897284 102666116 -231168 -0.225%

Change-Id: Idf4ba3c05e35ec1d1ae957d6ded00ae79cc0fd2a
Reviewed-on: https://go-review.googlesource.com/c/go/+/172198
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Josh Bleecher Snyder 2021-10-04 15:51:22 -07:00
parent 3100dc1a7f
commit c1a0aa300a
1 changed files with 1 additions and 0 deletions
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1
src/cmd/compile/internal/liveness/plive.go
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@ -1417,6 +1417,7 @@ func (lv *liveness) emitStackObjects() *obj.LSym {
// Populate the stack object data. // Populate the stack object data.
// Format must match runtime/stack.go:stackObjectRecord. // Format must match runtime/stack.go:stackObjectRecord.
x := base.Ctxt.Lookup(lv.fn.LSym.Name + ".stkobj") x := base.Ctxt.Lookup(lv.fn.LSym.Name + ".stkobj")
x.Set(obj.AttrContentAddressable, true)
lv.fn.LSym.Func().StackObjects = x lv.fn.LSym.Func().StackObjects = x
off := 0 off := 0
off = objw.Uintptr(x, off, uint64(len(vars))) off = objw.Uintptr(x, off, uint64(len(vars)))