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cmd/internal/gc: show register dump before crashing on register left allocated

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If you are using -h to get a stack trace at the site of the failure,
Yyerror will never return. Dump the register allocation sites
before calling Yyerror.

Change-Id: I51266c03e06cb5084c2eaa89b367b9ed85ba286a
Reviewed-on: https://go-review.googlesource.com/9788
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Dave Cheney <dave@cheney.net>
This commit is contained in:
Russ Cox 2015-05-06 12:22:05 -04:00
parent 8f037fa1ab
commit c70b4b5f7e
1 changed files with 2 additions and 2 deletions
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4
src/cmd/internal/gc/gsubr.go
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@ -625,20 +625,20 @@ func gclean() {
for r := Thearch.REGMIN; r <= Thearch.REGMAX; r++ {
n := reg[r-Thearch.REGMIN]
if n != 0 {
Yyerror("reg %v left allocated", obj.Rconv(r))
if Debug['v'] != 0 {
Regdump()
}
Yyerror("reg %v left allocated", obj.Rconv(r))
}
}
for r := Thearch.FREGMIN; r <= Thearch.FREGMAX; r++ {
n := reg[r-Thearch.REGMIN]
if n != 0 {
Yyerror("reg %v left allocated", obj.Rconv(r))
if Debug['v'] != 0 {
Regdump()
}
Yyerror("reg %v left allocated", obj.Rconv(r))
}
}
}