---

yaml
---
r: 277279
b: refs/heads/try
c: 6ff8f4a
h: refs/heads/master
i:
  277277: 839524c
  277275: b6a6b7a
  277271: 4c0f260
  277263: ecf906d
  277247: f6e1c7d

Author: alexcrichton

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 6dbb0e86aec11050480beb76eade6fb805010ba7
 refs/heads/snap-stage3: 235d77457d80b549dad3ac36d94f235208a1eafb
-refs/heads/try: a0c325980367d5ee981145e31c70585acee40cd2
+refs/heads/try: 6ff8f4a34aef7fa94900743e233ec41845738fc0
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try/CONTRIBUTING.md

@@ -307,7 +307,7 @@ are:
 [gsearchdocs]: https://www.google.com/search?q=site:doc.rust-lang.org+your+query+here
 [rif]: http://internals.rust-lang.org
 [rr]: https://doc.rust-lang.org/book/README.html
-[tlgba]: http://tomlee.co/2014/04/a-more-detailed-tour-of-the-rust-compiler/
+[tlgba]: http://tomlee.co/2014/04/03/a-more-detailed-tour-of-the-rust-compiler/
 [ro]: http://www.rustaceans.org/
 [rctd]: ./COMPILER_TESTS.md
 [cheatsheet]: http://buildbot.rust-lang.org/homu/

branches/try/Makefile.in

@@ -214,6 +214,13 @@ include $(CFG_SRC_DIR)mk/debuggers.mk
 # Secondary makefiles, conditionalized for speed
 ######################################################################
 
+# Binary snapshots
+ifneq ($(strip $(findstring snap,$(MAKECMDGOALS))   \
+               $(findstring clean,$(MAKECMDGOALS))),)
+  CFG_INFO := $(info cfg: including snap rules)
+  include $(CFG_SRC_DIR)mk/snap.mk
+endif
+
 # The test suite
 ifneq ($(strip $(findstring check,$(MAKECMDGOALS)) \
                $(findstring test,$(MAKECMDGOALS))  \

branches/try/RELEASES.md

@@ -140,9 +140,9 @@ Cargo
 Performance
 -----------
 
-* [The time complexity of comparing variables for equivalence during type 
-  unification is reduced from _O_(_n_!) to _O_(_n_)][1.9tu]. This leads
-  to major compilation time improvement in some scenarios.
+* [During type unification, the complexity of comparing variables for
+  equivalance was reduced from `O(n!)` to `O(n)`][1.9tu]. This leads
+  to major compile-time improvements in some scenarios.
 * [`ToString` is specialized for `str`, giving it the same performance
   as `to_owned`][1.9ts].
 * [Spawning processes with `Command::output` no longer creates extra

branches/try/mk/crates.mk

@@ -97,7 +97,7 @@ DEPS_rustc_const_eval := rustc_const_math rustc syntax log serialize \
 					     rustc_back graphviz
 
 DEPS_rustc := syntax fmt_macros flate arena serialize getopts rbml \
-              log graphviz rustc_llvm rustc_back rustc_data_structures\
+              log graphviz rustc_back rustc_data_structures\
 		  	  rustc_const_math
 DEPS_rustc_back := std syntax flate log libc
 DEPS_rustc_borrowck := rustc rustc_mir log graphviz syntax
@@ -133,7 +133,7 @@ TOOL_DEPS_rustdoc := rustdoc
 TOOL_DEPS_rustc := rustc_driver
 TOOL_DEPS_rustbook := std rustdoc
 TOOL_DEPS_error_index_generator := rustdoc syntax serialize
-TOOL_SOURCE_compiletest := $(S)src/tools/compiletest/src/main.rs
+TOOL_SOURCE_compiletest := $(S)src/compiletest/compiletest.rs
 TOOL_SOURCE_rustdoc := $(S)src/driver/driver.rs
 TOOL_SOURCE_rustc := $(S)src/driver/driver.rs
 TOOL_SOURCE_rustbook := $(S)src/tools/rustbook/main.rs

branches/try/mk/dist.mk

@@ -50,6 +50,7 @@ PKG_FILES := \
     $(addprefix $(S)src/,                      \
       bootstrap                                \
       build_helper                             \
+      compiletest                              \
       doc                                      \
       driver                                   \
       etc                                      \
@@ -61,7 +62,7 @@ PKG_FILES := \
       rtstartup                                \
       rustllvm                                 \
       rustc                                    \
-      stage0.txt                               \
+      snapshots.txt                            \
       rust-installer                           \
       tools                                    \
       test)                                    \

branches/try/mk/main.mk

@@ -34,7 +34,6 @@ CFG_FILENAME_EXTRA=$(shell printf '%s' $(CFG_RELEASE)$(CFG_EXTRA_FILENAME) | $(C
 # intentionally not "secure" by any definition, this is largely just a deterrent
 # from users enabling unstable features on the stable compiler.
 CFG_BOOTSTRAP_KEY=$(CFG_FILENAME_EXTRA)
-CFG_BOOTSTRAP_KEY_STAGE0=$(shell grep 'rustc_key' $(S)src/stage0.txt | sed 's/rustc_key: '//)
 
 ifeq ($(CFG_RELEASE_CHANNEL),stable)
 # This is the normal semver version string, e.g. "0.12.0", "0.12.0-nightly"

branches/try/mk/reconfig.mk

@@ -38,6 +38,6 @@ else
 SREL_ROOT := $(SREL)
 endif
 
-config.stamp: $(S)configure $(S)Makefile.in $(S)src/stage0.txt
+config.stamp: $(S)configure $(S)Makefile.in $(S)src/snapshots.txt
 	@$(call E, cfg: reconfiguring)
 	$(SREL_ROOT)configure $(CFG_CONFIGURE_ARGS)

branches/try/mk/rustllvm.mk

@@ -43,9 +43,6 @@ $$(RT_OUTPUT_DIR_$(1))/$$(call CFG_STATIC_LIB_NAME_$(1),rustllvm): \
 	@$$(call E, link: $$@)
 	$$(Q)$$(call CFG_CREATE_ARCHIVE_$(1),$$@) $$^
 
-RUSTLLVM_COMPONENTS_$(1) = $$(shell echo $$(LLVM_ALL_COMPONENTS_$(1)) |\
-	tr 'a-z-' 'A-Z_'| sed -e 's/^ //;s/\([^ ]*\)/\-DLLVM_COMPONENT_\1/g')
-
 # On MSVC we need to double-escape arguments that llvm-config printed which
 # start with a '/'. The shell we're running in will auto-translate the argument
 # `/foo` to `C:/msys64/foo` but we really want it to be passed through as `/foo`
@@ -54,7 +51,6 @@ $(1)/rustllvm/%.o: $(S)src/rustllvm/%.cpp $$(MKFILE_DEPS) $$(LLVM_CONFIG_$(1))
 	@$$(call E, compile: $$@)
 	$$(Q)$$(call CFG_COMPILE_CXX_$(1), $$@,) \
 		$$(subst  /,//,$$(LLVM_CXXFLAGS_$(1))) \
-		$$(RUSTLLVM_COMPONENTS_$(1)) \
 		$$(EXTRA_RUSTLLVM_CXXFLAGS_$(1)) \
 		$$(RUSTLLVM_INCS_$(1)) \
 		$$<

branches/try/mk/snap.mk

@@ -0,0 +1,28 @@
+# Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution and at
+# http://rust-lang.org/COPYRIGHT.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+define DEF_SNAP_FOR_STAGE_H
+# $(1) stage
+# $(2) triple
+
+snap-stage$(1)-H-$(2): $$(HSREQ$(1)_H_$(2))
+	$(CFG_PYTHON) $(S)src/etc/make-snapshot.py stage$(1) $(2)
+
+endef
+
+$(foreach host,$(CFG_HOST), \
+ $(foreach stage,1 2 3, \
+  $(eval $(call DEF_SNAP_FOR_STAGE_H,$(stage),$(host)))))
+
+snap-stage1: snap-stage1-H-$(CFG_BUILD)
+
+snap-stage2: snap-stage2-H-$(CFG_BUILD)
+
+snap-stage3: snap-stage3-H-$(CFG_BUILD)

branches/try/mk/stage0.mk

@@ -10,14 +10,17 @@ $(HLIB0_H_$(CFG_BUILD))/:
 endif
 
 $(SNAPSHOT_RUSTC_POST_CLEANUP): \
-		$(S)src/stage0.txt \
-		$(S)src/etc/get-stage0.py $(MKFILE_DEPS) \
+		$(S)src/snapshots.txt \
+		$(S)src/etc/get-snapshot.py $(MKFILE_DEPS) \
 		| $(HBIN0_H_$(CFG_BUILD))/
+
 	@$(call E, fetch: $@)
+#   Note: the variable "SNAPSHOT_FILE" is generally not set, and so
+#   we generally only pass one argument to this script.
 ifdef CFG_ENABLE_LOCAL_RUST
 	$(Q)$(S)src/etc/local_stage0.sh $(CFG_BUILD) $(CFG_LOCAL_RUST_ROOT) rustlib
 else
-	$(Q)$(CFG_PYTHON) $(S)src/etc/get-stage0.py $(CFG_BUILD)
+	$(Q)$(CFG_PYTHON) $(S)src/etc/get-snapshot.py $(CFG_BUILD) $(SNAPSHOT_FILE)
 endif
 	$(Q)if [ -e "$@" ]; then touch "$@"; else echo "ERROR: snapshot $@ not found"; exit 1; fi
 

branches/try/mk/target.mk

@@ -65,11 +65,6 @@ $(foreach host,$(CFG_HOST), \
 # $(4) is the crate name
 define RUST_TARGET_STAGE_N
 
-ifeq ($(1),0)
-$$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
-	export RUSTC_BOOTSTRAP_KEY := $$(CFG_BOOTSTRAP_KEY_STAGE0)
-endif
-
 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): CFG_COMPILER_HOST_TRIPLE = $(2)
 $$(TLIB$(1)_T_$(2)_H_$(3))/stamp.$(4): \
 		$$(CRATEFILE_$(4)) \
@@ -118,11 +113,6 @@ endef
 # $(4) - name of the tool being built
 define TARGET_TOOL
 
-ifeq ($(1),0)
-$$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
-	export RUSTC_BOOTSTRAP_KEY := $$(CFG_BOOTSTRAP_KEY_STAGE0)
-endif
-
 $$(TBIN$(1)_T_$(2)_H_$(3))/$(4)$$(X_$(2)): \
 		$$(TOOL_SOURCE_$(4)) \
 		$$(TOOL_INPUTS_$(4)) \
@@ -177,15 +167,11 @@ SNAPSHOT_RUSTC_POST_CLEANUP=$(HBIN0_H_$(CFG_BUILD))/rustc$(X_$(CFG_BUILD))
 
 define TARGET_HOST_RULES
 
-$$(TLIB$(1)_T_$(2)_H_$(3))/: $$(SNAPSHOT_RUSTC_POST_CLEANUP)
-	mkdir -p $$@
-
-$$(TBIN$(1)_T_$(2)_H_$(3))/: $$(SNAPSHOT_RUSTC_POST_CLEANUP)
+$$(TLIB$(1)_T_$(2)_H_$(3))/:
 	mkdir -p $$@
 
 $$(TLIB$(1)_T_$(2)_H_$(3))/%: $$(RT_OUTPUT_DIR_$(2))/% \
-	    $$(SNAPSHOT_RUSTC_POST_CLEANUP) \
-	    | $$(TLIB$(1)_T_$(2)_H_$(3))/
+	    | $$(TLIB$(1)_T_$(2)_H_$(3))/ $$(SNAPSHOT_RUSTC_POST_CLEANUP)
 	@$$(call E, cp: $$@)
 	$$(Q)cp $$< $$@
 endef

branches/try/mk/tests.mk

@@ -241,16 +241,13 @@ cleantestlibs:
 ######################################################################
 
 .PHONY: tidy
-tidy: $(HBIN0_H_$(CFG_BUILD))/tidy$(X_$(CFG_BUILD)) \
-		$(SNAPSHOT_RUSTC_POST_CLEANUP)
+tidy: $(HBIN0_H_$(CFG_BUILD))/tidy$(X_$(CFG_BUILD))
 	$(TARGET_RPATH_VAR0_T_$(CFG_BUILD)_H_$(CFG_BUILD)) $< $(S)src
 
 $(HBIN0_H_$(CFG_BUILD))/tidy$(X_$(CFG_BUILD)): \
 		$(TSREQ0_T_$(CFG_BUILD)_H_$(CFG_BUILD)) \
 		$(TLIB0_T_$(CFG_BUILD)_H_$(CFG_BUILD))/stamp.std \
-		$(call rwildcard,$(S)src/tools/tidy/src,*.rs) \
-		$(SNAPSHOT_RUSTC_POST_CLEANUP) | \
-		$(TLIB0_T_$(CFG_BUILD)_H_$(CFG_BUILD))
+		$(call rwildcard,$(S)src/tools/tidy/src,*.rs)
 	$(STAGE0_T_$(CFG_BUILD)_H_$(CFG_BUILD)) $(S)src/tools/tidy/src/main.rs \
 		--out-dir $(@D) --crate-name tidy
 
@@ -614,7 +611,7 @@ CTEST_COMMON_ARGS$(1)-T-$(2)-H-$(3) := \
         --run-lib-path $$(TLIB$(1)_T_$(2)_H_$(3)) \
         --rustc-path $$(HBIN$(1)_H_$(3))/rustc$$(X_$(3)) \
         --rustdoc-path $$(HBIN$(1)_H_$(3))/rustdoc$$(X_$(3)) \
-        --llvm-filecheck $(CFG_LLVM_INST_DIR_$(CFG_BUILD))/bin/FileCheck \
+        --llvm-bin-path $(CFG_LLVM_INST_DIR_$(CFG_BUILD))/bin \
         --aux-base $$(S)src/test/auxiliary/ \
         --stage-id stage$(1)-$(2) \
         --target $(2) \