Update emscripten

.arcconfig

@@ -1,4 +1,3 @@
 {
-  "project_id" : "llvm",
-  "conduit_uri" : "http://llvm-reviews.chandlerc.com/"
+  "conduit_uri" : "https://reviews.llvm.org/"
 }

.clang-format

@@ -0,0 +1,2 @@
+BasedOnStyle: LLVM
+

.clang-tidy

@@ -0,0 +1,17 @@
+Checks: '-*,clang-diagnostic-*,llvm-*,misc-*,-misc-unused-parameters,readability-identifier-naming'
+CheckOptions:
+  - key:             readability-identifier-naming.ClassCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.EnumCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.FunctionCase
+    value:           camelBack
+  - key:             readability-identifier-naming.MemberCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.ParameterCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.UnionCase
+    value:           CamelCase
+  - key:             readability-identifier-naming.VariableCase
+    value:           CamelCase
+

.gitattributes

@@ -0,0 +1,12 @@
+# binary files
+test/Object/Inputs/*.a-* binary
+test/tools/dsymutil/Inputs/* binary
+test/tools/llvm-ar/Inputs/*.lib binary
+test/tools/llvm-objdump/Inputs/*.a binary
+test/tools/llvm-rc/Inputs/* binary
+test/tools/llvm-strings/Inputs/numbers binary
+test/MC/AsmParser/incbin_abcd binary
+test/YAMLParser/spec-09-02.test binary
+
+# Windows line ending test
+test/MC/AsmParser/preserve-comments-crlf.s text eol=crlf

.gitignore

@@ -16,33 +16,61 @@
 # Byte compiled python modules.
 *.pyc
 # vim swap files
-.*.swp
+.*.sw?
 .sw?
+#OS X specific files.
+.DS_store
+
+# Nested build directory
+/build
 
 #==============================================================================#
 # Explicit files to ignore (only matches one).
 #==============================================================================#
+# Various tag programs
+/tags
+/TAGS
+/GPATH
+/GRTAGS
+/GSYMS
+/GTAGS
 .gitusers
 autom4te.cache
 cscope.files
 cscope.out
 autoconf/aclocal.m4
 autoconf/autom4te.cache
-compile_commands.json
+/compile_commands.json
 
 #==============================================================================#
 # Directories to ignore (do not add trailing '/'s, they skip symlinks).
 #==============================================================================#
 # External projects that are tracked independently.
 projects/*
-!projects/sample
-!projects/CMakeLists.txt
+!projects/*.*
 !projects/Makefile
+runtimes/*
+!runtimes/*.*
 # Clang, which is tracked independently.
 tools/clang
 # LLDB, which is tracked independently.
 tools/lldb
 # lld, which is tracked independently.
 tools/lld
+# llgo, which is tracked independently.
+tools/llgo
+# Polly, which is tracked independently.
+tools/polly
+# avrlit, which is tracked independently.
+tools/avrlit
 # Sphinx build tree, if building in-source dir.
 docs/_build
+# VS2017 and VSCode config files.
+.vscode
+.vs
+
+#==============================================================================#
+# Files created in tree by the Go bindings.
+#==============================================================================#
+bindings/go/llvm/llvm_config.go
+bindings/go/llvm/workdir