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[dev.link] all: merge branch 'master' into dev.link

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The only conflict is in cmd/internal/obj/link.go and the
resolution is trivial.

Change-Id: Ic79b760865a972a0ab68291d06386531d012de86
This commit is contained in:
Cherry Zhang 2019-10-25 13:41:36 -04:00
commit d77b809df9
314 changed files with 6741 additions and 1170 deletions
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12
src/cmd/compile/internal/gc/main.go
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@ -53,6 +53,7 @@ var (
Debug_typecheckinl int
Debug_gendwarfinl int
Debug_softfloat int
Debug_defer int
)
// Debug arguments.
@ -83,6 +84,7 @@ var debugtab = []struct {
{"typecheckinl", "eager typechecking of inline function bodies", &Debug_typecheckinl},
{"dwarfinl", "print information about DWARF inlined function creation", &Debug_gendwarfinl},
{"softfloat", "force compiler to emit soft-float code", &Debug_softfloat},
{"defer", "print information about defer compilation", &Debug_defer},
}
const debugHelpHeader = `usage: -d arg[,arg]* and arg is <key>[=<value>]
@ -94,6 +96,11 @@ const debugHelpHeader = `usage: -d arg[,arg]* and arg is <key>[=<value>]
const debugHelpFooter = `
<value> is key-specific.
Key "checkptr" supports values:
"0": instrumentation disabled
"1": conversions involving unsafe.Pointer are instrumented
"2": conversions to unsafe.Pointer force heap allocation
Key "pctab" supports values:
"pctospadj", "pctofile", "pctoline", "pctoinline", "pctopcdata"
`
@ -338,6 +345,11 @@ func Main(archInit func(*Arch)) {
if flag_race && flag_msan {
log.Fatal("cannot use both -race and -msan")
}
if (flag_race || flag_msan) && objabi.GOOS != "windows" {
// -race and -msan imply -d=checkptr for now (except on windows).
// TODO(mdempsky): Re-evaluate before Go 1.14. See #34964.
Debug_checkptr = 1
}
if ispkgin(omit_pkgs) {
flag_race = false
flag_msan = false