xtensa support

Author: kassane

README.md

@@ -1,4 +1,13 @@
-# bootstrap-zig
+# zig-espressif-bootstrap
+
+**Note:** This fork adds new CPUs for xtensa targets, replacing llvm-upstream to espressif-llvm fork.
+
+- **Xtensa**
+   - esp32
+   - esp32s2
+   - esp32s3
+   - esp8266
+   - cannon lake
 
 The purpose of this project is to start with minimum system dependencies and
 end with a fully operational Zig compiler for any target.
@@ -8,10 +17,10 @@ end with a fully operational Zig compiler for any target.
 This repository copies sources from upstream. Patches listed below. Use git
 to find and inspect the patch diffs.
 
- * LLVM, LLD, Clang 17.0.6
+ * LLVM, LLD, Clang 17.0.1 ([espressif fork](https://github.com/espressif/llvm-project))
  * zlib 1.3
  * zstd 1.5.2
- * zig 0.12.0-dev.2058+04ac028a2
+ * zig 0.12.0-dev.xtensa.2858+8e52bb152
 
 For other versions, check the git tags of this repository.
 

build

@@ -7,7 +7,7 @@ TARGET="$1" # Example: riscv64-linux-gnu
 MCPU="$2" # Examples: `baseline`, `native`, `generic+v7a`, or `arm1176jzf_s`
 
 ROOTDIR="$(pwd)"
-ZIG_VERSION="0.12.0-dev.2058+04ac028a2"
+ZIG_VERSION="0.12.0-dev.xtensa.2858+8e52bb152"
 
 TARGET_OS_AND_ABI=${TARGET#*-} # Example: linux-gnu
 
@@ -50,6 +50,7 @@ cmake "$ROOTDIR/llvm" \
   -DCLANG_TOOL_C_INDEX_TEST_BUILD=OFF \
   -DCLANG_TOOL_ARCMT_TEST_BUILD=OFF \
   -DCLANG_TOOL_C_ARCMT_TEST_BUILD=OFF \
+  -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa \
   -DCLANG_TOOL_LIBCLANG_BUILD=OFF
 cmake --build . --target install
 
@@ -185,6 +186,7 @@ cmake "$ROOTDIR/llvm" \
   -DCLANG_TOOL_C_ARCMT_TEST_BUILD=OFF \
   -DCLANG_TOOL_LIBCLANG_BUILD=OFF \
   -DLIBCLANG_BUILD_STATIC=ON \
+  -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa \
   -DLLD_BUILD_TOOLS=OFF
 cmake --build . --target install
 
@@ -194,9 +196,9 @@ $ZIG build \
   --prefix "$ROOTDIR/out/zig-$TARGET-$MCPU" \
   --search-prefix "$ROOTDIR/out/$TARGET-$MCPU" \
   -Dflat \
+  -Dllvm-has-xtensa \
   -Dstatic-llvm \
-  -Doptimize=ReleaseFast \
-  -Dstrip \
+  -Doptimize=ReleaseSafe \
   -Dtarget="$TARGET" \
   -Dcpu="$MCPU" \
   -Dversion-string="$ZIG_VERSION"

build.bat

@@ -35,7 +35,7 @@ if "%VSCMD_ARG_HOST_ARCH%"=="x86" set OUTDIR=out-win-x86
 
 set ROOTDIR=%~dp0
 set "ROOTDIR_CMAKE=%ROOTDIR:\=/%"
-set ZIG_VERSION=0.11.0-dev.995+7350f0d9b
+set ZIG_VERSION=0.12.0-dev.xtensa.2858+8e52bb152
 
 set JOBS_ARG=
 
@@ -88,6 +88,7 @@ cmake "%ROOTDIR%/llvm" ^
   -DCLANG_TOOL_C_ARCMT_TEST_BUILD=OFF ^
   -DCLANG_TOOL_LIBCLANG_BUILD=OFF ^
   -DLLVM_USE_CRT_RELEASE=MT ^
+  -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa ^
   -DLLVM_BUILD_LLVM_C_DYLIB=NO
 if %ERRORLEVEL% neq 0 exit /b %ERRORLEVEL%
 cmake --build . %JOBS_ARG% --target install
@@ -236,6 +237,7 @@ cmake "%ROOTDIR%/llvm" ^
   -DLLVM_INCLUDE_EXAMPLES=OFF ^
   -DLLVM_INCLUDE_BENCHMARKS=OFF ^
   -DLLVM_INCLUDE_DOCS=OFF ^
+  -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa ^
   -DLLVM_DEFAULT_TARGET_TRIPLE=%TARGET% ^
   -DLLVM_TOOL_LLVM_LTO2_BUILD=OFF ^
   -DLLVM_TOOL_LLVM_LTO_BUILD=OFF ^
@@ -266,8 +268,8 @@ cd "%ROOTDIR%\zig"
   --search-prefix "%ROOTDIR%%OUTDIR%\%TARGET%-%MCPU%" ^
   -Dflat ^
   -Dstatic-llvm ^
-  -Doptimize=ReleaseFast ^
-  -Dstrip ^
+  -Doptimize=ReleaseSafe ^
+  -Dllvm-has-xtensa ^
   -Dtarget="%TARGET%" ^
   -Dcpu="%MCPU%" ^
   -Dversion-string="%ZIG_VERSION%"

clang/.clang-format

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

clang/CodeOwners.rst

@@ -0,0 +1,274 @@
+=================
+Clang Code Owners
+=================
+
+This file is a list of the people responsible for ensuring that patches for a
+particular part of Clang are reviewed, either by themself or by someone else.
+They are also the gatekeepers for their part of Clang, with the final word on
+what goes in or not.
+
+.. contents::
+   :depth: 2
+   :local:
+
+Current Code Owners
+===================
+The following people are the active code owners for the project. Please reach
+out to them for code reviews, questions about their area of expertise, or other
+assistance.
+
+All parts of Clang not covered by someone else
+----------------------------------------------
+| Aaron Ballman
+| aaron\@aaronballman.com (email), aaron.ballman (Phabricator), AaronBallman (GitHub)
+
+
+Contained Components
+--------------------
+These code owners are responsible for particular high-level components within
+Clang that are typically contained to one area of the compiler.
+
+AST matchers
+~~~~~~~~~~~~
+| Manuel Klimek
+| klimek\@google.com (email), klimek (Phabricator), r4nt (GitHub)
+
+
+Clang LLVM IR generation
+~~~~~~~~~~~~~~~~~~~~~~~~
+| John McCall
+| rjmccall\@apple.com (email), rjmccall (Phabricator), rjmccall (GitHub)
+
+| Eli Friedman
+| efriedma\@quicinc.com (email), efriedma (Phabricator), efriedma-quic (GitHub)
+
+| Anton Korobeynikov
+| anton\@korobeynikov.info (email), asl (Phabricator), asl (GitHub)
+
+
+Analysis & CFG
+~~~~~~~~~~~~~~
+| Dmitri Gribenko
+| gribozavr\@gmail.com (email), gribozavr (Phabricator), gribozavr (GitHub)
+
+| Yitzhak Mandelbaum
+| yitzhakm\@google.com (email), ymandel (Phabricator), ymand (GitHub)
+
+| Stanislav Gatev
+| sgatev\@google.com (email), sgatev (Phabricator), sgatev (GitHub)
+
+
+Experimental new constant interpreter
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+| Timm Bäder
+| [email protected] (email), tbaeder (Phabricator), tbaederr (GitHub)
+
+
+Modules & serialization
+~~~~~~~~~~~~~~~~~~~~~~~
+| Chuanqi Xu
+| yedeng.yd\@linux.alibaba.com (email), ChuanqiXu (Phabricator), ChuanqiXu9 (GitHub)
+
+| Michael Spencer
+| bigcheesegs\@gmail.com (email), Bigcheese (Phabricator), Bigcheese (GitHub)
+
+
+Templates
+~~~~~~~~~
+| Erich Keane
+| erich.keane\@intel.com (email), ErichKeane (Phabricator), erichkeane (GitHub)
+
+
+Debug information
+~~~~~~~~~~~~~~~~~
+| Adrian Prantl
+| aprantl\@apple.com (email), aprantl (Phabricator), adrian-prantl (GitHub)
+
+| David Blaikie
+| dblaikie\@gmail.com (email), dblaikie (Phabricator), dwblaikie (GitHub)
+
+| Eric Christopher
+| echristo\@gmail.com (email), echristo (Phabricator), echristo (GitHub)
+
+
+Exception handling
+~~~~~~~~~~~~~~~~~~
+| Anton Korobeynikov
+| anton\@korobeynikov.info (email), asl (Phabricator), asl (GitHub)
+
+
+Clang static analyzer
+~~~~~~~~~~~~~~~~~~~~~
+| Artem Dergachev
+| adergachev\@apple.com (email), NoQ (Phabricator), haoNoQ (GitHub)
+
+| Gábor Horváth
+| xazax.hun\@gmail.com (email), xazax.hun (Phabricator), Xazax-hun (GitHub)
+
+
+Compiler options
+~~~~~~~~~~~~~~~~
+| Jan Svoboda
+| jan_svoboda\@apple.com (email), jansvoboda11 (Phabricator), jansvoboda11 (GitHub)
+
+
+OpenBSD driver
+~~~~~~~~~~~~~~
+| Brad Smith
+| brad\@comstyle.com (email), brad (Phabricator), brad0 (GitHub)
+
+
+Driver parts not covered by someone else
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+| Fangrui Song
+| maskray\@google.com (email), MaskRay (Phabricator), MaskRay (GitHub)
+
+
+Tools
+-----
+These code owners are responsible for user-facing tools under the Clang
+umbrella or components used to support such tools.
+
+Tooling library
+~~~~~~~~~~~~~~~
+| Manuel Klimek
+| klimek\@google.com (email), klimek (Phabricator), r4nt (GitHub)
+
+
+clang-format
+~~~~~~~~~~~~
+| MyDeveloperDay
+| mydeveloperday\@gmail.com (email), MyDeveloperDay (Phabricator), MyDeveloperDay (GitHub)
+
+| Owen Pan
+| owenpiano\@gmail.com (email), owenpan (Phabricator), owenca (GitHub)
+
+
+ABIs
+----
+The following people are responsible for decisions involving ABI.
+
+Itanium ABI
+~~~~~~~~~~~
+| John McCall
+| rjmccall\@apple.com (email), rjmccall (Phabricator), rjmccall (GitHub)
+
+
+Microsoft ABI
+~~~~~~~~~~~~~
+| Reid Kleckner
+| rnk\@google.com (email), rnk (Phabricator), rnk (GitHub)
+
+
+ARM EABI
+~~~~~~~~
+| Anton Korobeynikov
+| anton\@korobeynikov.info (email), asl (Phabricator), asl (GitHub)
+
+
+Compiler-Wide Topics
+--------------------
+The following people are responsible for functionality that does not fit into
+a single part of the compiler, but instead span multiple components within the
+compiler.
+
+Attributes
+~~~~~~~~~~
+| Erich Keane
+| erich.keane\@intel.com (email), ErichKeane (Phabricator), erichkeane (GitHub)
+
+
+Inline assembly
+~~~~~~~~~~~~~~~
+| Eric Christopher
+| echristo\@gmail.com (email), echristo (Phabricator), echristo (GitHub)
+
+
+Text encodings
+~~~~~~~~~~~~~~
+| Tom Honermann
+| tom\@honermann.net (email), tahonermann (Phabricator), tahonermann (GitHub)
+
+| Corentin Jabot
+| corentin.jabot\@gmail.com (email), cor3ntin (Phabricator), cor3ntin (GitHub)
+
+
+CMake integration
+~~~~~~~~~~~~~~~~~
+| Petr Hosek
+| phosek\@google.com (email), phosek (Phabricator), petrhosek (GitHub)
+
+| John Ericson
+| git\@johnericson.me (email), Ericson2314 (Phabricator), Ericson2314 (GitHub)
+
+
+General Windows support
+~~~~~~~~~~~~~~~~~~~~~~~
+| Reid Kleckner
+| rnk\@google.com (email), rnk (Phabricator), rnk (GitHub)
+
+
+Incremental compilation, REPLs, clang-repl
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+| Vassil Vassilev
+| Vassil.Vassilev\@cern.ch (email), v.g.vassilev (Phabricator), vgvassilev (GitHub)
+
+
+Standards Conformance
+---------------------
+The following people are responsible for validating that changes are conforming
+to a relevant standard. Contact them for questions about how to interpret a
+standard, when fixing standards bugs, or when implementing a new standard feature.
+
+C conformance
+~~~~~~~~~~~~~
+| Aaron Ballman
+| aaron\@aaronballman.com (email), aaron.ballman (Phabricator), AaronBallman (GitHub)
+
+
+C++ conformance
+~~~~~~~~~~~~~~~
+| Hubert Tong
+| hubert.reinterpretcast\@gmail.com (email), hubert.reinterpretcast (Phabricator), hubert-reinterpretcast (GitHub)
+
+
+Objective-C/C++ conformance
+~~~~~~~~~~~~~~~~~~~~~~~~~~~
+| John McCall
+| rjmccall\@apple.com (email), rjmccall (Phabricator), rjmccall (GitHub)
+
+
+OpenMP conformance
+~~~~~~~~~~~~~~~~~~
+| Alexey Bataev
+| a.bataev\@hotmail.com (email), ABataev (Phabricator), alexey-bataev (GitHub)
+
+
+OpenCL conformance
+~~~~~~~~~~~~~~~~~~
+| Anastasia Stulova
+| anastasia\@compiler-experts.com (email), Anastasia (Phabricator), AnastasiaStulova (GitHub)
+
+
+SYCL conformance
+~~~~~~~~~~~~~~~~
+| Alexey Bader
+| alexey.bader\@intel.com (email), bader (Phabricator), bader (GitHub)
+
+
+Former Code Owners
+==================
+The following people have graciously spent time performing code ownership
+responsibilities but are no longer active in that role. Thank you for all your
+help with the success of the project!
+
+Emeritus owners
+---------------
+| Doug Gregor (dgregor\@apple.com)
+| Richard Smith (richard\@metafoo.co.uk)
+
+
+Former component owners
+-----------------------
+| Chandler Carruth (chandlerc\@gmail.com, chandlerc\@google.com) -- CMake, library layering
+| Devin Coughlin (dcoughlin\@apple.com) -- Clang static analyzer