---

yaml
---
r: 274346
b: refs/heads/stable
c: 33b73e9
h: refs/heads/master

Author: bors

[refs]

@@ -29,7 +29,7 @@ refs/heads/tmp: e06d2ad9fcd5027bcaac5b08fc9aa39a49d0ecd3
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
 refs/tags/homu-tmp: c0221c8897db309a79990367476177b1230bb264
 refs/tags/1.0.0-beta: 8cbb92b53468ee2b0c2d3eeb8567005953d40828
-refs/heads/stable: 88d5bfd65d63364d688897e322fd6dc75fec0bb6
+refs/heads/stable: 33b73e9643fdf7b5d3be47d92e996ab04d6212e9
 refs/tags/1.0.0: 55bd4f8ff2b323f317ae89e254ce87162d52a375
 refs/tags/1.1.0: bc3c16f09287e5545c1d3f76b7abd54f2eca868b
 refs/tags/1.2.0: f557861f822c34f07270347b94b5280de20a597e

branches/stable/CONTRIBUTING.md

@@ -6,6 +6,7 @@ links to the major sections:
 
 * [Feature Requests](#feature-requests)
 * [Bug Reports](#bug-reports)
+* [The Build System](#the-build-system)
 * [Pull Requests](#pull-requests)
 * [Writing Documentation](#writing-documentation)
 * [Issue Triage](#issue-triage)
@@ -77,6 +78,66 @@ to do this is to invoke `rustc` like this:
 $ RUST_BACKTRACE=1 rustc ...
 ```
 
+## The Build System
+
+Rust's build system allows you to bootstrap the compiler, run tests &
+benchmarks, generate documentation, install a fresh build of Rust, and more.
+It's your best friend when working on Rust, allowing you to compile & test
+your contributions before submission.
+
+All the configuration for the build system lives in [the `mk` directory][mkdir]
+in the project root. It can be hard to follow in places, as it uses some
+advanced Make features which make for some challenging reading. If you have
+questions on the build system internals, try asking in
+[`#rust-internals`][pound-rust-internals].
+
+[mkdir]: https://github.com/rust-lang/rust/tree/master/mk/
+
+### Configuration
+
+Before you can start building the compiler you need to configure the build for
+your system. In most cases, that will just mean using the defaults provided
+for Rust. Configuring involves invoking the `configure` script in the project
+root.
+
+```
+./configure
+```
+
+There are large number of options accepted by this script to alter the
+configuration used later in the build process. Some options to note:
+
+- `--enable-debug` - Build a debug version of the compiler (disables optimizations)
+- `--enable-optimize` - Enable optimizations (can be used with `--enable-debug`
+    to make a debug build with optimizations)
+- `--disable-valgrind-rpass` - Don't run tests with valgrind
+- `--enable-clang` - Prefer clang to gcc for building dependencies (e.g., LLVM)
+- `--enable-ccache` - Invoke clang/gcc with ccache to re-use object files between builds
+- `--enable-compiler-docs` - Build compiler documentation
+
+To see a full list of options, run `./configure --help`.
+
+### Useful Targets
+
+Some common make targets are:
+
+- `make rustc-stage1` - build up to (and including) the first stage. For most
+  cases we don't need to build the stage2 compiler, so we can save time by not
+  building it. The stage1 compiler is a fully functioning compiler and
+  (probably) will be enough to determine if your change works as expected.
+- `make check` - build the full compiler & run all tests (takes a while). This
+  is what gets run by the continuous integration system against your pull
+  request. You should run this before submitting to make sure your tests pass
+  & everything builds in the correct manner.
+- `make check-stage1-std NO_REBUILD=1` - test the standard library without
+  rebuilding the entire compiler
+- `make check TESTNAME=<path-to-test-file>.rs` - Run a single test file
+- `make check-stage1-rpass TESTNAME=<path-to-test-file>.rs` - Run a single
+  rpass test with the stage1 compiler (this will be quicker than running the
+  command above as we only build the stage1 compiler, not the entire thing).
+  You can also leave off the `-rpass` to run all stage1 test types.
+- `make check-stage1-coretest` - Run stage1 tests in `libcore`.
+
 ## Pull Requests
 
 Pull requests are the primary mechanism we use to change Rust. GitHub itself

branches/stable/COPYRIGHT

@@ -7,7 +7,7 @@ terms.
 Longer version:
 
 The Rust Project is copyright 2016, The Rust Project
-Developers (given in the file AUTHORS.txt).
+Developers.
 
 Licensed under the Apache License, Version 2.0
 <LICENSE-APACHE or

branches/stable/Makefile.in

@@ -220,19 +220,12 @@ endif
 # The test suite
 ifneq ($(strip $(findstring check,$(MAKECMDGOALS)) \
                $(findstring test,$(MAKECMDGOALS))  \
-               $(findstring perf,$(MAKECMDGOALS))  \
                $(findstring tidy,$(MAKECMDGOALS))),)
   CFG_INFO := $(info cfg: including test rules)
   include $(CFG_SRC_DIR)mk/tests.mk
   include $(CFG_SRC_DIR)mk/grammar.mk
 endif
 
-# Performance and benchmarking
-ifneq ($(findstring perf,$(MAKECMDGOALS)),)
-  CFG_INFO := $(info cfg: including perf rules)
-  include $(CFG_SRC_DIR)mk/perf.mk
-endif
-
 # Copy all the distributables to another directory for binary install
 ifneq ($(strip $(findstring prepare,$(MAKECMDGOALS)) \
                $(findstring dist,$(MAKECMDGOALS)) \

branches/stable/README.md

@@ -78,7 +78,7 @@ build.
 Download [MinGW from
 here](http://mingw-w64.org/doku.php/download/mingw-builds), and choose the
 `threads=win32,exceptions=dwarf/seh` flavor when installing. After installing,
-add its `bin` directory to your `PATH`. This is due to #28260, in the future,
+add its `bin` directory to your `PATH`. This is due to [#28260](https://github.com/rust-lang/rust/issues/28260), in the future,
 installing from pacman should be just fine.
 
    ```

branches/stable/configure

@@ -499,13 +499,18 @@ case $CFG_CPUTYPE in
         CFG_CPUTYPE=aarch64
         ;;
 
-    # At some point, when ppc64[le] support happens, this will need to do
-    # something clever. For now it's safe to assume that we're only ever
-    # interested in building 32 bit.
-    powerpc | ppc | ppc64)
+    powerpc | ppc)
         CFG_CPUTYPE=powerpc
         ;;
 
+    powerpc64 | ppc64)
+        CFG_CPUTYPE=powerpc64
+        ;;
+
+    powerpc64le | ppc64le)
+        CFG_CPUTYPE=powerpc64le
+        ;;
+
     x86_64 | x86-64 | x64 | amd64)
         CFG_CPUTYPE=x86_64
         ;;
@@ -545,7 +550,7 @@ CFG_SELF="$0"
 CFG_CONFIGURE_ARGS="$@"
 
 
-case "${CFG_SRC_DIR}" in  
+case "${CFG_SRC_DIR}" in
     *\ * )
         err "The path to the rust source directory contains spaces, which is not supported"
         ;;
@@ -887,6 +892,13 @@ then
     CFG_DISABLE_JEMALLOC=1
 fi
 
+if [ $CFG_OSTYPE = pc-windows-gnu ]
+then
+    # FIXME(#31030) - there's not a great reason to disable jemalloc here
+    step_msg "on Windows, disabling jemalloc"
+    CFG_DISABLE_JEMALLOC=1
+fi
+
 # OS X 10.9, gcc is actually clang. This can cause some confusion in the build
 # system, so if we find that gcc is clang, we should just use clang directly.
 if [ $CFG_OSTYPE = apple-darwin -a -z "$CFG_ENABLE_CLANG" ]
@@ -1030,7 +1042,7 @@ then
         if [ -n "$CFG_OSX_CLANG_VERSION" ]
         then
             case $CFG_OSX_CLANG_VERSION in
-                (7.0*)
+                (7.0* | 7.1* | 7.2*)
                 step_msg "found ok version of APPLE CLANG: $CFG_OSX_CLANG_VERSION"
                 ;;
                 (*)
@@ -1039,7 +1051,7 @@ then
             esac
         else
             case $CFG_CLANG_VERSION in
-                (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8*)
+                (3.2* | 3.3* | 3.4* | 3.5* | 3.6* | 3.7* | 3.8* | 3.9*)
                 step_msg "found ok version of CLANG: $CFG_CLANG_VERSION"
                 ;;
                 (*)
@@ -1349,16 +1361,22 @@ for h in $CFG_HOST
 do
     for t in $CFG_TARGET
     do
+        # host bin dir stage0
+        make_dir $h/stage0/bin
+
         # host lib dir stage0
         make_dir $h/stage0/lib
 
+        # host test dir stage0
+        make_dir $h/stage0/test
+
         # target bin dir stage0
         make_dir $h/stage0/lib/rustlib/$t/bin
 
         # target lib dir stage0
         make_dir $h/stage0/lib/rustlib/$t/lib
 
-        for i in 0 1 2 3
+        for i in 1 2 3
         do
             # host bin dir
             make_dir $h/stage$i/bin
@@ -1391,6 +1409,7 @@ do
     make_dir $h/test/debuginfo-gdb
     make_dir $h/test/debuginfo-lldb
     make_dir $h/test/codegen
+    make_dir $h/test/codegen-units
     make_dir $h/test/rustdoc
 done
 

branches/stable/mk/cfg/armv7-unknown-linux-gnueabihf.mk

@@ -0,0 +1,26 @@
+# armv7-unknown-linux-gnueabihf configuration
+CROSS_PREFIX_armv7-unknown-linux-gnueabihf=armv7-unknown-linux-gnueabihf-
+CC_armv7-unknown-linux-gnueabihf=gcc
+CXX_armv7-unknown-linux-gnueabihf=g++
+CPP_armv7-unknown-linux-gnueabihf=gcc -E
+AR_armv7-unknown-linux-gnueabihf=ar
+CFG_LIB_NAME_armv7-unknown-linux-gnueabihf=lib$(1).so
+CFG_STATIC_LIB_NAME_armv7-unknown-linux-gnueabihf=lib$(1).a
+CFG_LIB_GLOB_armv7-unknown-linux-gnueabihf=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_armv7-unknown-linux-gnueabihf=lib$(1)-*.dylib.dSYM
+CFG_JEMALLOC_CFLAGS_armv7-unknown-linux-gnueabihf := -D__arm__ $(CFLAGS)
+CFG_GCCISH_CFLAGS_armv7-unknown-linux-gnueabihf := -Wall -g -fPIC -D__arm__ $(CFLAGS)
+CFG_GCCISH_CXXFLAGS_armv7-unknown-linux-gnueabihf := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_armv7-unknown-linux-gnueabihf := -shared -fPIC -g
+CFG_GCCISH_DEF_FLAG_armv7-unknown-linux-gnueabihf := -Wl,--export-dynamic,--dynamic-list=
+CFG_LLC_FLAGS_armv7-unknown-linux-gnueabihf :=
+CFG_INSTALL_NAME_ar,-unknown-linux-gnueabihf =
+CFG_EXE_SUFFIX_armv7-unknown-linux-gnueabihf :=
+CFG_WINDOWSY_armv7-unknown-linux-gnueabihf :=
+CFG_UNIXY_armv7-unknown-linux-gnueabihf := 1
+CFG_LDPATH_armv7-unknown-linux-gnueabihf :=
+CFG_RUN_armv7-unknown-linux-gnueabihf=$(2)
+CFG_RUN_TARG_armv7-unknown-linux-gnueabihf=$(call CFG_RUN_armv7-unknown-linux-gnueabihf,,$(2))
+RUSTC_FLAGS_armv7-unknown-linux-gnueabihf := -C target-feature=+v7,+vfp2,+neon
+RUSTC_CROSS_FLAGS_armv7-unknown-linux-gnueabihf :=
+CFG_GNU_TRIPLE_armv7-unknown-linux-gnueabihf := armv7-unknown-linux-gnueabihf

branches/stable/mk/cfg/powerpc64-unknown-linux-gnu.mk

@@ -0,0 +1,24 @@
+# powerpc64-unknown-linux-gnu configuration
+CROSS_PREFIX_powerpc64-unknown-linux-gnu=powerpc64-linux-gnu-
+CC_powerpc64-unknown-linux-gnu=$(CC)
+CXX_powerpc64-unknown-linux-gnu=$(CXX)
+CPP_powerpc64-unknown-linux-gnu=$(CPP)
+AR_powerpc64-unknown-linux-gnu=$(AR)
+CFG_LIB_NAME_powerpc64-unknown-linux-gnu=lib$(1).so
+CFG_STATIC_LIB_NAME_powerpc64-unknown-linux-gnu=lib$(1).a
+CFG_LIB_GLOB_powerpc64-unknown-linux-gnu=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_powerpc64-unknown-linux-gnu=lib$(1)-*.dylib.dSYM
+CFG_CFLAGS_powerpc64-unknown-linux-gnu := -m64 $(CFLAGS)
+CFG_GCCISH_CFLAGS_powerpc64-unknown-linux-gnu := -Wall -Werror -g -fPIC -m64 $(CFLAGS)
+CFG_GCCISH_CXXFLAGS_powerpc64-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_powerpc64-unknown-linux-gnu := -shared -fPIC -ldl -pthread  -lrt -g -m64
+CFG_GCCISH_DEF_FLAG_powerpc64-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
+CFG_LLC_FLAGS_powerpc64-unknown-linux-gnu :=
+CFG_INSTALL_NAME_powerpc64-unknown-linux-gnu =
+CFG_EXE_SUFFIX_powerpc64-unknown-linux-gnu =
+CFG_WINDOWSY_powerpc64-unknown-linux-gnu :=
+CFG_UNIXY_powerpc64-unknown-linux-gnu := 1
+CFG_LDPATH_powerpc64-unknown-linux-gnu :=
+CFG_RUN_powerpc64-unknown-linux-gnu=$(2)
+CFG_RUN_TARG_powerpc64-unknown-linux-gnu=$(call CFG_RUN_powerpc64-unknown-linux-gnu,,$(2))
+CFG_GNU_TRIPLE_powerpc64-unknown-linux-gnu := powerpc64-unknown-linux-gnu

branches/stable/mk/cfg/powerpc64le-unknown-linux-gnu.mk

@@ -0,0 +1,24 @@
+# powerpc64le-unknown-linux-gnu configuration
+CROSS_PREFIX_powerpc64le-unknown-linux-gnu=powerpc64le-linux-gnu-
+CC_powerpc64le-unknown-linux-gnu=$(CC)
+CXX_powerpc64le-unknown-linux-gnu=$(CXX)
+CPP_powerpc64le-unknown-linux-gnu=$(CPP)
+AR_powerpc64le-unknown-linux-gnu=$(AR)
+CFG_LIB_NAME_powerpc64le-unknown-linux-gnu=lib$(1).so
+CFG_STATIC_LIB_NAME_powerpc64le-unknown-linux-gnu=lib$(1).a
+CFG_LIB_GLOB_powerpc64le-unknown-linux-gnu=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_powerpc64le-unknown-linux-gnu=lib$(1)-*.dylib.dSYM
+CFG_CFLAGS_powerpc64le-unknown-linux-gnu := -m64 $(CFLAGS)
+CFG_GCCISH_CFLAGS_powerpc64le-unknown-linux-gnu := -Wall -Werror -g -fPIC -m64 $(CFLAGS)
+CFG_GCCISH_CXXFLAGS_powerpc64le-unknown-linux-gnu := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_powerpc64le-unknown-linux-gnu := -shared -fPIC -ldl -pthread  -lrt -g -m64
+CFG_GCCISH_DEF_FLAG_powerpc64le-unknown-linux-gnu := -Wl,--export-dynamic,--dynamic-list=
+CFG_LLC_FLAGS_powerpc64le-unknown-linux-gnu :=
+CFG_INSTALL_NAME_powerpc64le-unknown-linux-gnu =
+CFG_EXE_SUFFIX_powerpc64le-unknown-linux-gnu =
+CFG_WINDOWSY_powerpc64le-unknown-linux-gnu :=
+CFG_UNIXY_powerpc64le-unknown-linux-gnu := 1
+CFG_LDPATH_powerpc64le-unknown-linux-gnu :=
+CFG_RUN_powerpc64le-unknown-linux-gnu=$(2)
+CFG_RUN_TARG_powerpc64le-unknown-linux-gnu=$(call CFG_RUN_powerpc64le-unknown-linux-gnu,,$(2))
+CFG_GNU_TRIPLE_powerpc64le-unknown-linux-gnu := powerpc64le-unknown-linux-gnu

branches/stable/mk/crates.mk

@@ -57,7 +57,7 @@ TARGET_CRATES := libc std flate arena term \
 RUSTC_CRATES := rustc rustc_typeck rustc_mir rustc_borrowck rustc_resolve rustc_driver \
                 rustc_trans rustc_back rustc_llvm rustc_privacy rustc_lint \
                 rustc_data_structures rustc_front rustc_platform_intrinsics \
-                rustc_plugin rustc_metadata
+                rustc_plugin rustc_metadata rustc_passes
 HOST_CRATES := syntax syntax_ext $(RUSTC_CRATES) rustdoc fmt_macros
 TOOLS := compiletest rustdoc rustc rustbook error-index-generator
 
@@ -97,11 +97,12 @@ DEPS_rustc_data_structures := std log serialize
 DEPS_rustc_driver := arena flate getopts graphviz libc rustc rustc_back rustc_borrowck \
                      rustc_typeck rustc_mir rustc_resolve log syntax serialize rustc_llvm \
 	             rustc_trans rustc_privacy rustc_lint rustc_front rustc_plugin \
-                     rustc_metadata syntax_ext
+                     rustc_metadata syntax_ext rustc_passes
 DEPS_rustc_front := std syntax log serialize
 DEPS_rustc_lint := rustc log syntax
 DEPS_rustc_llvm := native:rustllvm libc std rustc_bitflags
 DEPS_rustc_metadata := rustc rustc_front syntax rbml
+DEPS_rustc_passes := syntax rustc core rustc_front
 DEPS_rustc_mir := rustc rustc_front syntax
 DEPS_rustc_resolve := arena rustc rustc_front log syntax
 DEPS_rustc_platform_intrinsics := rustc rustc_llvm

branches/stable/mk/main.mk

@@ -13,7 +13,7 @@
 ######################################################################
 
 # The version number
-CFG_RELEASE_NUM=1.7.0
+CFG_RELEASE_NUM=1.8.0
 
 # An optional number to put after the label, e.g. '.2' -> '-beta.2'
 # NB Make sure it starts with a dot to conform to semver pre-release
@@ -522,14 +522,6 @@ STAGE$(1)_T_$(2)_H_$(3) := \
 		$$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
                 $$(RUSTC_FLAGS_$(2))
 
-PERF_STAGE$(1)_T_$(2)_H_$(3) := \
-	$$(Q)$$(call CFG_RUN_TARG_$(3),$(1), \
-		$$(CFG_PERF_TOOL) \
-		$$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
-		--cfg $$(CFGFLAG$(1)_T_$(2)_H_$(3)) \
-		$$(CFG_RUSTC_FLAGS) $$(EXTRAFLAGS_STAGE$(1)) --target=$(2)) \
-                $$(RUSTC_FLAGS_$(2))
-
 endef
 
 $(foreach build,$(CFG_HOST), \

branches/stable/mk/perf.mk

@@ -77,23 +77,6 @@ define DEF_GOOD_VALGRIND
 endef
 $(foreach t,$(CFG_TARGET),$(eval $(call DEF_GOOD_VALGRIND,$(t))))
 
-ifneq ($(findstring linux,$(CFG_OSTYPE)),)
-  ifdef CFG_PERF
-    ifneq ($(CFG_PERF_WITH_LOGFD),)
-        CFG_PERF_TOOL := $(CFG_PERF) stat -r 3 --log-fd 2
-    else
-        CFG_PERF_TOOL := $(CFG_PERF) stat -r 3
-    endif
-  else
-    ifdef CFG_VALGRIND
-      CFG_PERF_TOOL := \
-        $(CFG_VALGRIND) --tool=cachegrind --cache-sim=yes --branch-sim=yes
-    else
-      CFG_PERF_TOOL := /usr/bin/time --verbose
-    endif
-  endif
-endif
-
 AR := ar
 
 define SET_FROM_CFG