We currently have a stale "llvm" branch, that does not build.
However, there is clear demand in the RISC-V toolchain community
for a working LLVM on top of a recent GNU toolchain.
In order to build such a toolchain, quite some LLVM and clang know-how is
required to avoid path issues at LLVM build time or later when using clang.
The main purpose of this commit is to demonstrate a way to combine
the RISC-V GNU toolchain repo with LLVM, with the intent to save
others hours of frustration, debugging time or support time.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

This patch adds a submodule for llvm.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Add unittest to march-to-cpu-opt

Quick fix sim pk build failure for RV32.

ubuntu20.04 make it need "clang ninja-build"

Signed-off-by: 长柳 <110147328+changliuxy@users.noreply.github.com>

Support testing zdinx/zfinx/zhinx.

https://github.com/riscv-collab/riscv-gnu-toolchain/pull/1167 has found
some bug, and I realized the testing of march-to-cpu-opt is...not well,
so spend some time to improve that a little bit, it's not complete testing,
but at least it's a start :P

Fix wrong parse script

If test --with-arch=rv32imc_zve128x
NameError: name 'arch' is not defined

Signed-off-by: Kwanghoon Son <kwangson@yahoo.com>

- We don't set correct qemu option for zdinx/zfinx/zhinx, this patch is
fixing the march-to-cpu-opt, which is a script translate -march string
to qemu options.

Enhance the testing experience

Bump qemu to 7.1.0

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

musl: add missing submodule auto-initialization

Switch musl upstream URL from git:// to https://

This was the only such upstream URL and it caused issues for anyone
attempting to use it behind a proxy.

Fixes #1155.

Ubuntu 18.04 is deprecated and will be fully removed from GitHub
Actions soon (https://github.com/actions/runner-images/issues/6002

)

Signed-off-by: Florian Hofhammer <florian.hofhammer@fhofhammer.de>

Signed-off-by: Florian Hofhammer <florian.hofhammer@fhofhammer.de>

Let's document how to use the environment variable RUNTESTFLAGS
for selecting the tests that should be executed.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Let's document how to run all the test suites in order to increase the
number of people that will execute the tests.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Makefile.in has support for running the regression test suite of
Binutils, GCC and others. Let's add support for running glibc tests.

To run the tests the following command can be used:
  make check-glibc-linux

Tested with linux/rv64.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

This allows to specify the test cases to be run.
For example the following command can be used to restrict the testcases
that will be executed to zb*.c and sm*.c from the directory
`gcc/testsuite/gcc.target/riscv/` (which includes the file `riscv.exp`):

  RUNTESTFLAGS="riscv.exp=zb*.c\ sm*.c" make report

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

docs: update AUR link on README.md

gitmodules: Fix tracking branch for GCC 12

A recent commit bumped the GCC version to 12.2,
but adjusting the tracking branch in .gitmodules was forgotten.
Let's fix this and set the tracking branch to gcc-12
(note, that there are no release branches for minor version releases).

Reported-by: Tommy Murphy <tommy_murphy@hotmail.com>
Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Makefile.in: Adjust permission error message

We should not encourage people to call "sudo make".
Let's drop that recommendation in case of permission errors.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

dejagnu: Bump version to 1.6.3

GDB still defaults to 10.1 from the (already archived)
riscv-binutils-gdb repo. Let's bump the version to 12.1
and use the upstream git repo instead.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

dejagnu still defaults to 1.6 from the (already archived)
riscv-dejagnu repo. Let's bump the version to 1.6.3
and use the upstream git repo instead.

Signed-off-by: Christoph Müllner <christoph.muellner@vrull.eu>

* Bump gcc branch to 12.2 release.

* Adjust line style in allowlist

* Use arch=rv32imafdc and abi=ilp32f.
* Looks gnu gcc doesn't honor rv32gc and ilp32d.

Signed-off-by: Pan Li <pan2.li@intel.com>

Use https link instead of ssh

* The riscv-pk repo can only be built by rv32i.
* Change configure to rv32i to make SIM=spike option happy for multilib.

Signed-off-by: Pan Li <pan2.li@intel.com>

Update the riscv allowlist for gcc12.1-binutils 2.39