---

yaml
---
r: 218232
b: refs/heads/master
c: afe25a2
h: refs/heads/master
v: v3

Author: bors

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: b952c0e4e9f3c169c6647fd05fef68ae1119865a
+refs/heads/master: afe25a2d6aaa308cce861fab50014f6a9f57a269
 refs/heads/snap-stage3: ba0e1cd8147d452c356aacb29fb87568ca26f111
 refs/heads/try: b53c0f93eedcdedd4fd89bccc5a3a09d1c5cd23e
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105

trunk/.gitignore

@@ -19,6 +19,7 @@
 *.exe
 *.fn
 *.html
+*.kdev4
 *.ky
 *.ll
 *.llvm

trunk/CONTRIBUTING.md

@@ -83,6 +83,21 @@ feature. We use the 'fork and pull' model described there.
 
 Please make pull requests against the `master` branch.
 
+Compiling all of `make check` can take a while. When testing your pull request,
+consider using one of the more specialized `make` targets to cut down on the
+amount of time you have to wait. You need to have built the compiler at least
+once before running these will work, but that’s only one full build rather than
+one each time.
+
+    $ make -j8 rustc-stage1 && make check-stage1
+
+is one such example, which builds just `rustc`, and then runs the tests. If
+you’re adding something to the standard library, try
+
+    $ make -j8 check-stage1-std NO_REBUILD=1
+
+This will not rebuild the compiler, but will run the tests.
+
 All pull requests are reviewed by another person. We have a bot,
 @rust-highfive, that will automatically assign a random person to review your
 request.
@@ -108,6 +123,10 @@ will run all the tests on every platform we support. If it all works out,
 
 [merge-queue]: http://buildbot.rust-lang.org/homu/queue/rust
 
+Speaking of tests, Rust has a comprehensive test suite. More information about
+it can be found
+[here](https://github.com/rust-lang/rust-wiki-backup/blob/master/Note-testsuite.md).
+
 ## Writing Documentation
 
 Documentation improvements are very welcome. The source of `doc.rust-lang.org`

trunk/Makefile.in

@@ -62,6 +62,7 @@
 #   * tidy-basic - show file / line stats
 #   * tidy-errors - show the highest rustc error code
 #   * tidy-features - show the status of language and lib features
+#   * rustc-stage$(stage) - Only build up to a specific stage
 #
 # Then mix in some of these environment variables to harness the
 # ultimate power of The Rust Build System.
@@ -90,7 +91,7 @@
 #
 # # Rust recipes for build system success
 #
-#     // Modifying libstd? Use this comment to run unit tests just on your change
+#     // Modifying libstd? Use this command to run unit tests just on your change
 #     make check-stage1-std NO_REBUILD=1 NO_BENCH=1
 #
 #     // Added a run-pass test? Use this to test running your test

trunk/README.md

@@ -4,7 +4,7 @@ Rust is a fast systems programming language that guarantees
 memory safety and offers painless concurrency ([no data races]).
 It does not employ a garbage collector and has minimal runtime overhead.
 
-This repo contains the code for `rustc`, the Rust compiler, as well
+This repo contains the code for the compiler (`rustc`), as well
 as standard libraries, tools and documentation for Rust.
 
 [no data races]: http://blog.rust-lang.org/2015/04/10/Fearless-Concurrency.html
@@ -73,7 +73,7 @@ Read ["Installing Rust"] from [The Book].
    ```
 
 3. Run `mingw32_shell.bat` or `mingw64_shell.bat` from wherever you installed
-   MYSY2 (i.e. `C:\msys`), depending on whether you want 32-bit or 64-bit Rust.
+   MSYS2 (i.e. `C:\msys`), depending on whether you want 32-bit or 64-bit Rust.
 
 4. Navigate to Rust's source code, configure and build it:
 

trunk/RELEASES.md

@@ -1,3 +1,18 @@
+Version 1.2.0 (August 2015)
+===========================
+
+Highlights
+----------
+
+* [Parallel codegen][parcodegen] is now working again, which can substantially
+  speed up large builds in debug mode; It also gets another ~33% speedup when
+  bootstrapping on a 4 core machine (using 8 jobs). It's not enabled by default,
+  but will be "in the near future"
+
+
+[parcodegen]: https://github.com/rust-lang/rust/pull/26018
+
+
 Version 1.1.0 (June 2015)
 =========================
 
@@ -6,29 +21,28 @@ Version 1.1.0 (June 2015)
 Highlights
 ----------
 
-* The [`std::fs` module has been expanded][fs-expand] to expand the set of
+* The [`std::fs` module has been expanded][fs] to expand the set of
   functionality exposed:
   * `DirEntry` now supports optimizations like `file_type` and `metadata` which
     don't incur a syscall on some platforms.
   * A `symlink_metadata` function has been added.
   * The `fs::Metadata` structure now lowers to its OS counterpart, providing
     access to all underlying information.
-* The compiler contains extended explanations of many errors.  When it
-  emits such an error it also suggests using the `--explain` flag to
-  read the extended explanations, which are also [cataloged on the web
-  site][err].
+* The compiler now contains extended explanations of many errors. When an error
+  with an explanation occurs the compiler suggests using the `--explain` flag
+  to read the explanation. Error explanations are also [available online][err-index].
 * Thanks to multiple [improvements][sk] to [type checking][pre], as
   well as other work, the time to bootstrap the compiler decreased by
   32%.
 
 Libraries
 ---------
 
-* The `str::split_whitespace` method splits a string on unicode
+* The [`str::split_whitespace`] method splits a string on unicode
   whitespace boundaries.
 * On both Windows and Unix, new extension traits provide conversion of
   I/O types to and from the underlying system handles. On Unix, these
-  traits are [`FrowRawFd`] and [`AsRawFd`], on Windows `FromRawHandle`
+  traits are [`FromRawFd`] and [`AsRawFd`], on Windows `FromRawHandle`
   and `AsRawHandle`. These are implemented for `File`, `TcpStream`,
   `TcpListener`, and `UpdSocket`. Further implementations for
   `std::process` will be stabilized later.
@@ -80,15 +94,14 @@ Misc
 * [The `drop_with_repr_extern` lint warns about mixing `repr(C)`
   with `Drop`][drop].
 
-[`split_whitespace`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_whitespace
-[`Iterator::cloned`]: http://doc.rust-lang.org/nightly/core/iter/trait.Iterator.html#method.cloned
+[`str::split_whitespace`]: http://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_whitespace
 [`FromRawFd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.FromRawFd.html
 [`AsRawFd`]: http://doc.rust-lang.org/nightly/std/os/unix/io/trait.AsRawFd.html
 [`std::os::unix::symlink`]: http://doc.rust-lang.org/nightly/std/os/unix/fs/fn.symlink.html
 [`IntoIterator`]: http://doc.rust-lang.org/nightly/std/iter/trait.IntoIterator.html
 [`From`]: http://doc.rust-lang.org/nightly/std/convert/trait.From.html
 [rf]: https://github.com/rust-lang/rust/pull/24491
-[err]: http://doc.rust-lang.org/error-index.html
+[err-index]: http://doc.rust-lang.org/error-index.html
 [sk]: https://github.com/rust-lang/rust/pull/24615
 [pre]: https://github.com/rust-lang/rust/pull/25323
 [file]: https://github.com/rust-lang/rust/pull/24598
@@ -251,7 +264,6 @@ Misc
 [sw]: https://github.com/rust-lang/rfcs/blob/master/text/1054-str-words.md
 [th]: https://github.com/rust-lang/rfcs/blob/master/text/0909-move-thread-local-to-std-thread.md
 [send-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0458-send-improvements.md
-[scoped]: http://static.rust-lang.org/doc/master/std/thread/fn.scoped.html
 [moar-ufcs]: https://github.com/rust-lang/rust/pull/22172
 [prim-inherent]: https://github.com/rust-lang/rust/pull/23104
 [overflow]: https://github.com/rust-lang/rfcs/blob/master/text/0560-integer-overflow.md
@@ -261,12 +273,10 @@ Misc
 [string-pattern]: https://github.com/rust-lang/rust/pull/22466
 [oibit-final]: https://github.com/rust-lang/rust/pull/21689
 [reflect]: https://github.com/rust-lang/rust/pull/23712
-[debug-builder]: https://github.com/rust-lang/rfcs/blob/master/text/0640-debug-improvements.md
 [conversion]: https://github.com/rust-lang/rfcs/pull/529
 [num-traits]: https://github.com/rust-lang/rust/pull/23549
 [index-value]: https://github.com/rust-lang/rust/pull/23601
 [dropck]: https://github.com/rust-lang/rfcs/pull/769
-[fundamental]: https://github.com/rust-lang/rfcs/pull/1023
 [ci-compare]: https://gist.github.com/brson/a30a77836fbec057cbee
 [fn-inherit]: https://github.com/rust-lang/rust/pull/23282
 [fn-blanket]: https://github.com/rust-lang/rust/pull/23895
@@ -369,7 +379,6 @@ Version 1.0.0-alpha.2 (February 2015)
 [osstr]: https://github.com/rust-lang/rust/pull/21488
 [osstr-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0517-io-os-reform.md
 [Self]: https://github.com/rust-lang/rust/pull/22158
-[ufcs]: https://github.com/rust-lang/rust/pull/21077
 [ufcs-rfc]: https://github.com/rust-lang/rfcs/blob/master/text/0132-ufcs.md
 [un]: https://github.com/rust-lang/rust/pull/22256
 

trunk/configure

@@ -405,6 +405,10 @@ case $CFG_OSTYPE in
         CFG_OSTYPE=unknown-openbsd
        ;;
 
+    NetBSD)
+	    CFG_OSTYPE=unknown-netbsd
+	    ;;
+
     Darwin)
         CFG_OSTYPE=apple-darwin
         ;;
@@ -899,6 +903,18 @@ then
     fi
 fi
 
+# If the clang isn't already enabled, check for GCC, and if it is missing, turn
+# on clang as a backup.
+if [ -z "$CFG_ENABLE_CLANG" ]
+then
+  CFG_GCC_VERSION=$("$CFG_GCC" --version 2>&1)
+  if [ $? -ne 0 ]
+  then
+    step_msg "GCC not installed, will try using Clang"
+    CFG_ENABLE_CLANG=1
+  fi
+fi
+
 # Okay, at this point, we have made up our minds about whether we are
 # going to force CFG_ENABLE_CLANG or not; save the setting if so.
 if [ ! -z "$CFG_ENABLE_CLANG" ]
@@ -920,7 +936,7 @@ then
     LLVM_VERSION=$($LLVM_CONFIG --version)
 
     case $LLVM_VERSION in
-        (3.[5-6]*)
+        (3.[5-7]*)
             msg "found ok version of LLVM: $LLVM_VERSION"
             ;;
         (*)
@@ -1037,6 +1053,14 @@ for target_file in ${CFG_SRC_DIR}mk/cfg/*.mk; do
   CFG_SUPPORTED_TARGET="${CFG_SUPPORTED_TARGET} $(basename "$target_file" .mk)"
 done
 
+# copy build-triples to host-triples so that builds are a subset of hosts
+V_TEMP=""
+for i in $CFG_BUILD $CFG_HOST;
+do
+   echo "$V_TEMP" | grep -qF $i || V_TEMP="$V_TEMP${V_TEMP:+ }$i"
+done
+CFG_HOST=$V_TEMP
+
 # copy host-triples to target-triples so that hosts are a subset of targets
 V_TEMP=""
 for i in $CFG_HOST $CFG_TARGET;
@@ -1094,7 +1118,7 @@ do
             fi
             ;;
 
-        x86_64-*-msvc)
+        *-msvc)
             # Currently the build system is not configured to build jemalloc
             # with MSVC, so we omit this optional dependency.
             step_msg "targeting MSVC, disabling jemalloc"
@@ -1134,22 +1158,45 @@ do
             CFG_MSVC_ROOT=$(echo "$install" | grep InstallDir | sed 's/.*REG_SZ[ ]*//')
             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
             CFG_MSVC_ROOT=$(dirname "$CFG_MSVC_ROOT")
-            CFG_MSVC_CL="${CFG_MSVC_ROOT}/VC/bin/amd64/cl.exe"
-            CFG_MSVC_LIB="${CFG_MSVC_ROOT}/VC/bin/amd64/lib.exe"
-            CFG_MSVC_LINK="${CFG_MSVC_ROOT}/VC/bin/amd64/link.exe"
+            putvar CFG_MSVC_ROOT
+
+            case $i in
+                x86_64-*)
+                    bits=x86_64
+                    msvc_part=amd64
+                    ;;
+                i686-*)
+                    bits=i386
+                    msvc_part=
+                    ;;
+                *)
+                    err "can only target x86 targets for MSVC"
+                    ;;
+            esac
+            bindir="${CFG_MSVC_ROOT}/VC/bin"
+            if [ ! -z "$msvc_part" ]; then
+                bindir="$bindir/$msvc_part"
+            fi
+            eval CFG_MSVC_BINDIR_$bits="\"$bindir\""
+            eval CFG_MSVC_CL_$bits="\"$bindir/cl.exe\""
+            eval CFG_MSVC_LIB_$bits="\"$bindir/lib.exe\""
+            eval CFG_MSVC_LINK_$bits="\"$bindir/link.exe\""
 
             vcvarsall="${CFG_MSVC_ROOT}/VC/vcvarsall.bat"
-            CFG_MSVC_INCLUDE_PATH=$(cmd /c "\"$vcvarsall\" amd64 && cmd /c echo %INCLUDE%")
+            include_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %INCLUDE%")
             need_ok "failed to learn about MSVC's INCLUDE"
-            CFG_MSVC_LIB_PATH=$(cmd /c "\"$vcvarsall\" amd64 && cmd /c echo %LIB%")
+            lib_path=$(cmd /c "\"$vcvarsall\" $msvc_part && cmd /c echo %LIB%")
             need_ok "failed to learn about MSVC's LIB"
 
-            putvar CFG_MSVC_ROOT
-            putvar CFG_MSVC_CL
-            putvar CFG_MSVC_LIB
-            putvar CFG_MSVC_LINK
-            putvar CFG_MSVC_INCLUDE_PATH
-            putvar CFG_MSVC_LIB_PATH
+            eval CFG_MSVC_INCLUDE_PATH_${bits}="\"$include_path\""
+            eval CFG_MSVC_LIB_PATH_${bits}="\"$lib_path\""
+
+            putvar CFG_MSVC_BINDIR_${bits}
+            putvar CFG_MSVC_CL_${bits}
+            putvar CFG_MSVC_LIB_${bits}
+            putvar CFG_MSVC_LINK_${bits}
+            putvar CFG_MSVC_INCLUDE_PATH_${bits}
+            putvar CFG_MSVC_LIB_PATH_${bits}
             ;;
 
         *)
@@ -1388,8 +1435,19 @@ do
 
         msg "configuring LLVM with:"
         msg "$CMAKE_ARGS"
+        case "$t" in
+            x86_64-*)
+                generator="Visual Studio 12 2013 Win64"
+                ;;
+            i686-*)
+                generator="Visual Studio 12 2013"
+                ;;
+            *)
+                err "can only build LLVM for x86 platforms"
+                ;;
+        esac
         (cd $LLVM_BUILD_DIR && "$CFG_CMAKE" $CFG_LLVM_SRC_DIR \
-                                            -G "Visual Studio 12 2013 Win64" \
+                                            -G "$generator" \
                                             $CMAKE_ARGS)
         need_ok "LLVM cmake configure failed"
     fi

trunk/mk/cfg/i686-pc-windows-msvc.mk

@@ -0,0 +1,29 @@
+# i686-pc-windows-msvc configuration
+CC_i686-pc-windows-msvc="$(CFG_MSVC_CL_i386)" -nologo
+LINK_i686-pc-windows-msvc="$(CFG_MSVC_LINK_i386)" -nologo
+CXX_i686-pc-windows-msvc="$(CFG_MSVC_CL_i386)" -nologo
+CPP_i686-pc-windows-msvc="$(CFG_MSVC_CL_i386)" -nologo
+AR_i686-pc-windows-msvc="$(CFG_MSVC_LIB_i386)" -nologo
+CFG_LIB_NAME_i686-pc-windows-msvc=$(1).dll
+CFG_STATIC_LIB_NAME_i686-pc-windows-msvc=$(1).lib
+CFG_LIB_GLOB_i686-pc-windows-msvc=$(1)-*.{dll,lib}
+CFG_LIB_DSYM_GLOB_i686-pc-windows-msvc=$(1)-*.dylib.dSYM
+CFG_JEMALLOC_CFLAGS_i686-pc-windows-msvc :=
+CFG_GCCISH_CFLAGS_i686-pc-windows-msvc := -MD
+CFG_GCCISH_CXXFLAGS_i686-pc-windows-msvc := -MD
+CFG_GCCISH_LINK_FLAGS_i686-pc-windows-msvc :=
+CFG_GCCISH_DEF_FLAG_i686-pc-windows-msvc :=
+CFG_LLC_FLAGS_i686-pc-windows-msvc :=
+CFG_INSTALL_NAME_i686-pc-windows-msvc =
+CFG_EXE_SUFFIX_i686-pc-windows-msvc := .exe
+CFG_WINDOWSY_i686-pc-windows-msvc := 1
+CFG_UNIXY_i686-pc-windows-msvc :=
+CFG_LDPATH_i686-pc-windows-msvc :=
+CFG_RUN_i686-pc-windows-msvc=$(2)
+CFG_RUN_TARG_i686-pc-windows-msvc=$(call CFG_RUN_i686-pc-windows-msvc,,$(2))
+CFG_GNU_TRIPLE_i686-pc-windows-msvc := i686-pc-win32
+
+# All windows nightiles are currently a GNU triple, so this MSVC triple is not
+# bootstrapping from itself. This is relevant during stage0, and other parts of
+# the build system take this into account.
+BOOTSTRAP_FROM_i686-pc-windows-msvc := i686-pc-windows-gnu