doc: update go1.8.txt

Change-Id: Ibae0be046c6a6596d3a98b094ec5f089bb68be7a
Reviewed-on: https://go-review.googlesource.com/31182Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

doc/go1.8.txt

 Overall:
 
-Many more examples in documentations
 plugin build mode & package (many CLs)
 Many ppc64, s390x, arm, arm64 optimizations
 New frontend
+Summarize improvements to binary size, runtime speed, compile speed
 
 Language:
 
@@ -24,19 +24,25 @@ dragonfly: go1.8 requires DragonFly BSD 4.4.4 or above (CL 29491)
 
 API additions and behavior changes:
 
+archive/tar: fix and cleanup readOldGNUSparseMap (CL 28471)
 archive/tar: reapply Header.Size to regFileReader after merging (CL 28418)
 archive/zip: handle mtime in NTFS/UNIX/ExtendedTS extra fields (CL 18274)
+archive/zip: only use Extended Timestamp on non-zero MS-DOS timestamps (CL 30811)
 cmd/cgo: fix line info in _cgo_gotypes.go (CL 29713)
 cmd/compile, runtime, etc: get rid of constant FP registers (CL 28095)
+cmd/compile, runtime: add go:yeswritebarrierrec pragma (CL 30938)
+cmd/compile/internal/gc: add runtime/trace support (CL 25354)
 cmd/compile/internal/syntax: fast Go syntax trees, initial commit (CL 27195)
 cmd/compile: add SSA backend for s390x and enable by default (CL 28978)
 cmd/compile: add compiler phase timing (CL 24462)
+cmd/compile: add go:notinheap type pragma (CL 30939)
 cmd/compile: add inline explainer (CL 22782)
 cmd/compile: args no longer live until end of function - use runtime.KeepAlive instead (CL 28310)
 cmd/compile: fail gracefully on export format skew (CL 27814)
 cmd/compile: make ssa compilation unconditional (CL 29155)
 cmd/compile: remove support for textual export format (CL 27171)
 cmd/cover: Fix compiler directives handling (CL 30161)
+cmd/cover: handle gotos (CL 30977)
 cmd/dist: enable plugin test on darwin/amd64 (CL 29396)
 cmd/dist: test PIE internal linking on linux/amd64 (CL 28545)
 cmd/doc: ensure summaries truly are only one line (CL 25420)
@@ -48,18 +54,25 @@ cmd/go: enable -buildmode=plugin on darwin/amd64 (CL 29395)
 cmd/go: for -msan build runtime/cgo with -fsanitize=memory (CL 24855)
 cmd/go: make bug subcommand open the browser (CL 29210)
 cmd/internal/obj, cmd/link: darwin dynlink support (CL 29393)
+cmd/internal/objfile: add ppc64/ppc64le disassembler support (CL 9682)
 cmd/link, cmd/go: delay linking of mingwex and mingw32 until very end (CL 26670)
 cmd/link: R_ADDR dynamic relocs for internal PIE (CL 29118)
 cmd/link: allow internal PIE linking (CL 28543)
 cmd/link: fix -buildmode=pie / -linkshared combination (CL 28996)
+cmd/link: insert trampolines for too-far jumps on ARM (CL 29397)
+cmd/link: non-executable stack support for Solaris (CL 24142)
 cmd/link: plugin support on darwin/amd64 (CL 29394)
 cmd/link: remove the -shared flag (CL 28852)
 cmd/link: split large elf text sections on ppc64x (CL 27790)
 cmd/objdump: implement objdump of .o files (CL 24818)
+cmd/pprof: instruction-level granularity in callgrind output (CL 23781)
+cmd/trace: add option to output pprof files (CL 23324)
+cmd/trace: fix a runnable goroutine count bug (CL 25552)
 cmd/trace: move process-wide GC events to their own row (CL 30017)
 cmd/vet: allow ^& uintptr arithmetic (CL 27156)
 cmd/vet: allow any printf verb with any interface (CL 27127)
 cmd/vet: check for copying of array of locks (CL 24340)
+cmd/vet: check for duplicate json, xml struct field tags (CL 16704)
 cmd/vet: improve asmdecl parameter handling (CL 27150)
 cmd/vet: properly handle indexed arguments in printf (CL 24391)
 cmd/vet: skip printf check for non-constant format string during failed import (CL 29014)
@@ -75,9 +88,12 @@ crypto/tls: flush the buffer on handshake errors (CL 28818)
 crypto/tls: implement countermeasures against CBC padding oracles (CL 18130)
 crypto/tls: set Conn.ConnectionState.ServerName unconditionally (CL 22862)
 crypto/tls: support AES-128-CBC cipher suites with SHA-256 (CL 27315)
+crypto/tls: support X25519 (CL 30824, CL 30825)
 crypto/x509: Fix bug in UnknownAuthorityError.Error (CL 27992)
 crypto/x509: allow a leaf certificate to be specified directly as root (CL 27393)
+crypto/x509: check that the issuer name matches the issuer's subject name (CL 23571)
 crypto/x509: fix name constraints handling (CL 30155)
+crypto/x509: parse all names in an RDN (CL 30810)
 crypto/x509: recognise ISO OID for RSA+SHA1 (CL 27394)
 crypto/x509: require a NULL parameters for RSA public keys (CL 16166)
 crypto/x509: require a NULL parameters for RSA public keys (CL 27312)
@@ -85,19 +101,25 @@ crypto/x509: return error for missing SerialNumber (CL 27238)
 crypto/x509: support PSS signatures (CL 24743)
 crypto/x509: support RHEL 7 cert bundle (CL 30375)
 database/sql: add context methods (CL 29381)
+database/sql: add support for multiple result sets (CL 30592)
 database/sql: don't hang if the driver Exec method panics (CL 23576)
+debug/elf: add sparc64 relocations (CL 30870)
 debug/pe: revert CL 22720 (CL 27212)
 doc: document minimum OS X version as 10.8 (CL 28870)
+encoding/base64: add Encoding.Strict (CL 24964)
 encoding/binary: add bool support (CL 28514)
 encoding/json: add struct and field name to UnmarshalTypeError message (CL 18692)
 encoding/json: use standard ES6 formatting for numbers during marshal (CL 30371)
 encoding/pem: be stricter about the ending line (CL 27391)
+encoding/xml: prevent omitempty from omitting non-nil pointers to empty values (CL 15684)
+expvar: add Value methods (CL 30917)
 expvar: export http.Handler (CL 24722)
 fmt: document and adjust Scanf space handling to eliminate a few paradoxes (CL 30611)
 go/ast, go/parser: parse alias declarations (CL 30211)
 go/doc: add IsPredeclared function (CL 29870)
 go/doc: allow ToHTML to properly handle URLs containing semicolons (CL 25385)
 go/internal/gcimporter: fail gracefully on export format skew (CL 27816)
+go/types: expose Default function, which converts untyped T to T (CL 30715)
 go/types: minimal support for alias declarations: don't crash (CL 30213)
 html/template: check "type" attribute in <script> (CL 14336)
 image/png: improve compression by skipping filter for paletted images (CL 29872)
@@ -106,6 +128,7 @@ io: fix infinite loop bug in MultiReader (CL 27397)
 io: make MultiReader nil exhausted Readers for earlier GC (CL 28533)
 math/big: Rat.SetString to report error if input is not consumed entirely (CL 30472)
 math/big: support negative numbers in ModInverse (CL 29299)
+math/big: test and optimize Exp(2, y, n) for large y, odd n (CL 30708)
 math/rand: add Rand.Uint64 (CL 27253)
 math: fix Gamma(-171.5) on all platforms (CL 30540)
 mime/quotedprintable: accept trailing soft line-break at the end of message (CL 27530)
@@ -114,6 +137,7 @@ net/http/httputil: copy header map if necessary in ReverseProxy (CL 28493)
 net/http/httputil: make ReverseProxy send nil Body requests when possible (CL 28412)
 net/http/httputil: remove custom hop-by-hop headers from response in ReverseProxy (CL 28810)
 net/http/httputil: remove proxied headers mentioned in connection-tokens (CL 27970)
+net/http: allow Handlers to test Hijacked conn without spamming error log (CL 30812)
 net/http: don't sniff Request.Body on 100-continue requests in Transport (CL 30151)
 net/http: make Client copy headers on redirect (CL 28930)
 net/http: make DefaultTransport's Dialer enable DualStack ("Happy Eyeballs") (CL 28077)
@@ -128,6 +152,7 @@ net/url: handle escaped paths in ResolveReference (CL 28343)
 net/url: prefix relative paths containing ":" in the first segment with "./" (CL 29610)
 net: add Buffers type, do writev on unix (CL 29951)
 net: add Resolver type, Dialer.Resolver, and DefaultResolver (CL 29440)
+net: implement network interface API for Plan 9 (CL 29963)
 net: implement network interface API for Solaris (CL 29892)
 net: make LookupPort and lookupProtocol work on nacl (CL 28951)
 net: make lookupPort case-insensitive on Plan 9 (CL 29051)
@@ -137,6 +162,7 @@ net: support "option ndots:0" in resolv.conf (CL 24901)
 net: use libresolv rules for ndots range and validation (CL 24901)
 os: don't let File.Readdir return an empty slice and nil error (CL 28056)
 os: make IsExist report true on ERROR_DIR_NOT_EMPTY on Windows (CL 29753)
+os: make Windows readConsole handle input and output correctly (CL 29493)
 os: prevent infinite symlink loop of Stat on Windows (CL 27580)
 os: use GetConsoleCP() instead of GetACP() (CL 27575)
 path/filepath: don't return SkipDir at top (CL 24780)
@@ -155,10 +181,11 @@ runtime: fix check for vacuous page boundary rounding (CL 27230)
 runtime: fix map iterator concurrent map check (CL 24749)
 runtime: fix newextram PC passed to race detector (CL 29712)
 runtime: limit the number of map overflow buckets (CL 25049)
+runtime: record current PC for SIGPROF on non-Go thread (CL 30252)
 runtime: report GCSys and OtherSys in heap profile (CL 29276)
 runtime: sleep on CLOCK_MONOTONIC in futexsleep1 on freebsd (CL 30154)
-runtime: use correct system page size on all arches (CL 25022)
 runtime: use RtlGenRandom instead of CryptGenRandom (CL 29700)
+runtime: use correct system page size on all arches (CL 25022)
 sort: add Slice, SliceStable, and SliceIsSorted (CL 27321)
 spec: ignore struct tags when converting structs (CL 24190)
 spec: update language on type switches to match implementations (CL 27356)
@@ -166,11 +193,13 @@ strings, bytes: panic if Repeat overflows or if given a negative count (CL 29954
 syscall: add bounds checking and error returns to ParseNetlinkMessage (CL 26990)
 syscall: fix Send{msg,msgN}, Recvmsg and control message handling on solaris (CL 30171)
 syscall: make Getpagesize return system-reported page size (CL 25051)
+syscall: unify NsecToTime{spec,val}, fix for times < 1970 (CL 30826)
 syscall: validate ParseDirent inputs (CL 23780)
 testing: add Name method to *T and *B (CL 29970)
 testing: respect benchtime on very fast benchmarks (CL 26664)
 time: add Until helper function (CL 20118)
 time: allow long fractions in ParseDuration (CL 29338)
+unicode: change SimpleFold to handle invalid runes (CL 30935)
 website: recreate 16px and 32px favicon (CL 26850)
 
 Optimizations:
@@ -179,6 +208,7 @@ bytes: Use the same algorithm as strings for Index (CL 22550)
 bytes: improve WriteRune performance (CL 28816)
 bytes: make IndexRune faster (CL 28537)
 cmd/asm, go/build: invoke cmd/asm only once per package (CL 27636)
+cmd/compile,runtime: redo how map assignments work (CL 30815)
 cmd/compile/internal/obj/x86: eliminate some function prologues (CL 24814)
 cmd/compile: accept literals in samesafeexpr (CL 26666)
 cmd/compile: add more non-returning runtime calls (CL 28965)
@@ -195,14 +225,17 @@ cmd/compile: inline _, ok = i.(T) (CL 26658)
 cmd/compile: inline atomics from runtime/internal/atomic on amd64 (CL 27641, CL 27813)
 cmd/compile: inline convT2{I,E} when result doesn't escape (CL 29373)
 cmd/compile: inline x, ok := y.(T) where T is a scalar (CL 26659)
+cmd/compile: intrinsify math/big.mulWW, divWW on AMD64 (CL 30542)
 cmd/compile: intrinsify runtime/internal/atomic.Xaddint64 (CL 29274)
 cmd/compile: intrinsify slicebytetostringtmp when not instrumenting (CL 29017)
 cmd/compile: intrinsify sync/atomic for amd64 (CL 28076)
+cmd/compile: make link register allocatable in non-leaf functions (CL 30597)
 cmd/compile: missing float indexed loads/stores on amd64 (CL 28273)
 cmd/compile: optimize bool to int conversion (CL 22711)
 cmd/compile: optimize integer "in range" expressions (CL 27652)
 cmd/compile: remove Zero and NilCheck for newobject (CL 27930)
 cmd/compile: remove duplicate nilchecks (CL 29952)
+cmd/compile: remove some write barriers for stack writes (CL 30290)
 cmd/compile: simplify div/mod on ARM (CL 29390)
 cmd/compile: statically initialize some interface values (CL 26668)
 cmd/compile: unroll comparisons to short constant strings (CL 26758)
@@ -219,6 +252,7 @@ hash/crc32: improve the AMD64 implementation using SSE4.2 (CL 27931)
 hash/crc32: improve the processing of the last bytes in the SSE4.2 code for AMD64 (CL 24470)
 image/draw: optimize drawFillOver as drawFillSrc for opaque fills (CL 28790)
 math/big: avoid allocation in float.{Add, Sub} when there's no aliasing (CL 23568)
+math/big: make division faster (CL 30613)
 math/big: use array instead of slice for deBruijn lookups (CL 26663)
 math: speed up bessel functions on AMD64 (CL 28086)
 reflect: avoid zeroing memory that will be overwritten (CL 28011)
@@ -239,10 +273,20 @@ runtime: speed up StartTrace with lots of blocked goroutines (CL 25573)
 strings: add special cases for Join of 2 and 3 strings (CL 25005)
 strings: make IndexRune faster (CL 28546)
 strings: use AVX2 for Index if available (CL 22551)
+strings: use Index in Count (CL 28586)
 syscall: avoid convT2I allocs for common Windows error values (CL 28484, CL 28990)
 text/template: improve lexer performance in finding left delimiters (CL 24863)
 unicode/utf8: reduce bounds checks in EncodeRune (CL 28492)
 
 Documentation:
 
+all: many more examples in documentations (many CLs)
 runtime: runtime.MemStats has much more detailed documentation (CL 28972)
+
+Binary Size:
+
+cmd/link: more efficient encoding of DWARF line number information (CL 30577)
+cmd/compile: recognize integer ranges in switch statements (CL 26770)
+cmd/compile: use two tables for table-driven map inserts (CL 26669)
+cmd/link: when dynlinking, do not mangle short symbol names (CL 26890)
+cmd/compile, runtime: stop padding stackmaps to 4 bytes (CL 30817)