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cmd/compile: track pragmas in lexer rather than global variables

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By using a Pragma bit set (8 bits) rather than 8 booleans, also
reduce Func type size by 8 bytes (208B -> 200B on 64bit platforms,
116B -> 108B on 32bit platforms).

Change-Id: Ibb7e1f8c418a0b5bc6ff813cbdde7bc6f0013b5a
Reviewed-on: https://go-review.googlesource.com/19966
Reviewed-by: Dave Cheney <dave@cheney.net>
This commit is contained in:
Robert Griesemer 2016-02-26 13:32:28 -08:00
parent 071e43a958
commit 3c0fae5306
10 changed files with 50 additions and 67 deletions
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4
src/cmd/compile/internal/gc/pgen.go
View file

@ -434,10 +434,10 @@ func compile(fn *Node) {
if fn.Func.Needctxt {
ptxt.From3.Offset |= obj.NEEDCTXT
}
if fn.Func.Nosplit {
if fn.Func.Pragma&Nosplit != 0 {
ptxt.From3.Offset |= obj.NOSPLIT
}
if fn.Func.Systemstack {
if fn.Func.Pragma&Systemstack != 0 {
ptxt.From.Sym.Cfunc = 1
}