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cmd/gc: shorten name used for map bucket type

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Before:
type.struct { buckets *struct { overflow *struct { overflow *struct { overflow *struct { overflow *struct { overflow *<...>; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; oldbuckets *struct { overflow *struct { overflow *struct { overflow *struct { overflow *struct { overflow *<...>; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable }; keys [8]string; values [8]*"".RangeTable } }

After:
type.map.bucket[string]*"".RangeTable

This makes debugging maps a little nicer, and it takes up less space in the binary.

R=golang-dev, r
CC=golang-dev, khr
https://golang.org/cl/15110044
This commit is contained in:
Russ Cox 2013-10-18 15:56:07 -04:00
parent 66f49f78a5
commit 20f99ffa3e
2 changed files with 8 additions and 0 deletions
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7
src/cmd/gc/fmt.c
View File

@ -700,6 +700,13 @@ typefmt(Fmt *fp, Type *t)
return 0;
case TSTRUCT:
// Format the bucket struct for map[x]y as map.bucket[x]y.
// This avoids a recursive print that generates very long names.
if(t->hmap != T) {
t = t->hmap;
return fmtprint(fp, "map.bucket[%T]%T", t->down, t->type);
}
if(t->funarg) {
fmtstrcpy(fp, "(");
if(fmtmode == FTypeId || fmtmode == FErr) { // no argument names on function signature, and no "noescape" tags

1
src/cmd/gc/reflect.c
View File

@ -229,6 +229,7 @@ hmap(Type *t)
h->width = offset;
h->local = t->local;
t->hmap = h;
h->hmap = t;
return h;
}