This CL changes the behavior of 'make install' and 'make test'
in the src/cmd directory and the src/pkg directory to have
each recursive make clean up after itself immediately.
It does the same in test/run, removing $F.$A and $A.out
(the common byproducts) between runs.
On machines with slow disks and aggressive kernel caching,
cleaning up immediately can mean that the intermediate
objects never get written to disk.
This change eliminates almost all the disk waiting during
all.bash on my laptop (a Thinkpad X201s with an SSD running Linux).
147.50u 19.95s 277.34r before
148.53u 21.64s 179.59r after
R=golang-dev, r, iant2
CC=golang-dev
https://golang.org/cl/4413042
It matches encoding/line exactly and the tests are copied from there.
If we land this, then encoding/line will get marked as deprecated then
deleted in time.
R=rsc, rog, peterGo
CC=golang-dev
https://golang.org/cl/4389046
With the (partial) resolution of identifiers done
by the go/parser, ast.Objects point may introduce
cycles in the AST. Don't follow *ast.Objects, and
replace them with nil instead (they are likely
incorrect after a rewrite anyway).
- minor manual cleanups after reflect change automatic rewrite
- includes fix by rsc related to reflect change
Fixes#1667.
R=rsc
CC=golang-dev
https://golang.org/cl/4387044
The ld time was dominated by symbol table processing, so
* increase hash table size
* emit fewer symbols in gc (just 1 per string, 1 per type)
* add read-only lookup to avoid creating spurious symbols
* add linked list to speed whole-table traversals
Breaks dwarf generator (no idea why), so disable dwarf.
Reduces time for 6l to link godoc by 25%.
R=ken2
CC=golang-dev
https://golang.org/cl/4383047
Note that declarations.golden is not using spaces for alignment (so
that the alignment tabs are visible) which is why this change affects
the test cases significantly. gofmt uses spaces for alignment (by default)
and only tabs for indentation.
gofmt -w src misc (no changes)
Fixes#1673.
R=iant
CC=golang-dev
https://golang.org/cl/4388044
* add -diff command line option
* use scoping information in refersTo, isPkgDot, isPtrPkgDot.
* add new scoping-based helpers countUses, rewriteUses, assignsTo, isTopName.
* rename rewrite to walk, add walkBeforeAfter.
* add toy typechecker, a placeholder for go/types
R=gri
CC=golang-dev
https://golang.org/cl/4285053
Type is now an interface that implements all the possible type methods.
Instead of a type switch on a reflect.Type t, switch on t.Kind().
If a method is invoked on the wrong kind of type (for example,
calling t.Field(0) when t.Kind() != Struct), the call panics.
There is one method renaming: t.(*ChanType).Dir() is now t.ChanDir().
Value is now a struct value that implements all the possible value methods.
Instead of a type switch on a reflect.Value v, switch on v.Kind().
If a method is invoked on the wrong kind of value (for example,
calling t.Recv() when t.Kind() != Chan), the call panics.
Since Value is now a struct, not an interface, its zero value
cannot be compared to nil. Instead of v != nil, use v.IsValid().
Instead of other uses of nil as a Value, use Value{}, the zero value.
Many methods have been renamed, most due to signature conflicts:
OLD NEW
v.(*ArrayValue).Elem v.Index
v.(*BoolValue).Get v.Bool
v.(*BoolValue).Set v.SetBool
v.(*ChanType).Dir v.ChanDir
v.(*ChanValue).Get v.Pointer
v.(*ComplexValue).Get v.Complex
v.(*ComplexValue).Overflow v.OverflowComplex
v.(*ComplexValue).Set v.SetComplex
v.(*FloatValue).Get v.Float
v.(*FloatValue).Overflow v.OverflowFloat
v.(*FloatValue).Set v.SetFloat
v.(*FuncValue).Get v.Pointer
v.(*InterfaceValue).Get v.InterfaceData
v.(*IntValue).Get v.Int
v.(*IntValue).Overflow v.OverflowInt
v.(*IntValue).Set v.SetInt
v.(*MapValue).Elem v.MapIndex
v.(*MapValue).Get v.Pointer
v.(*MapValue).Keys v.MapKeys
v.(*MapValue).SetElem v.SetMapIndex
v.(*PtrValue).Get v.Pointer
v.(*SliceValue).Elem v.Index
v.(*SliceValue).Get v.Pointer
v.(*StringValue).Get v.String
v.(*StringValue).Set v.SetString
v.(*UintValue).Get v.Uint
v.(*UintValue).Overflow v.OverflowUint
v.(*UintValue).Set v.SetUint
v.(*UnsafePointerValue).Get v.Pointer
v.(*UnsafePointerValue).Set v.SetPointer
Part of the motivation for this change is to enable a more
efficient implementation of Value, one that does not allocate
memory during most operations. To reduce the size of the CL,
this CL's implementation is a wrapper around the old API.
Later CLs will make the implementation more efficient without
changing the API.
Other CLs to be submitted at the same time as this one
add support for this change to gofix (4343047) and update
the Go source tree (4353043).
R=gri, iant, niemeyer, r, rog, gustavo, r2
CC=golang-dev
https://golang.org/cl/4281055
This CL defines a new, more Go-like representation of
Go types (different structs for different types as
opposed to a single Type node). It also implements
an ast.Importer for object/archive files generated
by the gc compiler tool chain. Besides the individual
type structs, the main difference is the handling of
named types: In the old world, a named type had a
non-nil *Object pointer but otherwise looked no
different from other types. In this new model, named
types have their own representation types.Name. As
a result, resolving cycles is a bit simpler during
construction, at the cost of having to deal with
types.Name nodes explicitly later. It remains to be
seen if this is a good approach. Nevertheless, code
involving types reads more nicely and benefits from
full type checking. Also, the representation seems
to more closely match the spec wording.
Credits: The original version of the gc importer was
written by Evan Shaw (chickencha@gmail.com). The new
version in this CL is based largely on Evan's original
code but contains bug fixes, a few simplifications,
some restructuring, and was adjusted to use the
new type hierarchy. I have added a comprehensive test
that imports all packages found under $GOROOT/pkg (with
a 3s time-out to limit the run-time of the test). Run
gotest -v for details.
The original version of ExportData (exportdata.go) was
written by Russ Cox (rsc@golang.org). The current version
is returning the internal buffer positioned at the beginning
of the export data instead of printing the export data to
stdout.
With the new types package, the existing in-progress
typechecker package is deprecated. I will delete it
once all functionality has been brought over.
R=eds, rog, rsc
CC=golang-dev
https://golang.org/cl/4314054
