selftests/bpf: Update LLVM Phabricator links

reviews.llvm.org was LLVM's Phabricator instances for code review. It
has been abandoned in favor of GitHub pull requests. While the majority
of links in the kernel sources still work because of the work Fangrui
has done turning the dynamic Phabricator instance into a static archive,
there are some issues with that work, so preemptively convert all the
links in the kernel sources to point to the commit on GitHub.

Most of the commits have the corresponding differential review link in
the commit message itself so there should not be any loss of fidelity in
the relevant information.

Additionally, fix a typo in the xdpwall.c print ("LLMV" -> "LLVM") while
in the area.

Link: https://discourse.llvm.org/t/update-on-github-pull-requests/71540/172
Acked-by: Yonghong Song <[e-mail]>
Signed-off-by: Nathan Chancellor <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Alexei Starovoitov <[e-mail]>

tools/testing/selftests/bpf/README.rst

···
 verifier to understand such speculative pointer arithmetic.
 Hence `this patch`__ addresses it on the compiler side. It was committed on llvm 12.
 
-__ https://reviews.llvm.org/D85570
+__ https://github.com/llvm/llvm-project/commit/ddf1864ace484035e3cde5e83b3a31ac81e059c6
 
 The corresponding C code
 
···
 has been pushed to llvm 10.x release branch and will be
 available in 10.0.1. The patch is available in llvm 11.0.0 trunk.
 
-__  https://reviews.llvm.org/D78466
+__  https://github.com/llvm/llvm-project/commit/3cb7e7bf959dcd3b8080986c62e10a75c7af43f0
 
 bpf_verif_scale/loop6.bpf.o test failure with Clang 12
 ======================================================
···
 This cause later verifier failure. The bug has been `fixed`__ in
 Clang 13.
 
-__  https://reviews.llvm.org/D97479
+__  https://github.com/llvm/llvm-project/commit/1959ead525b8830cc8a345f45e1c3ef9902d3229
 
 BPF CO-RE-based tests and Clang version
 =======================================
···
 - __builtin_btf_type_id() [0_, 1_, 2_];
 - __builtin_preserve_type_info(), __builtin_preserve_enum_value() [3_, 4_].
 
-.. _0: https://reviews.llvm.org/D74572
-.. _1: https://reviews.llvm.org/D74668
-.. _2: https://reviews.llvm.org/D85174
-.. _3: https://reviews.llvm.org/D83878
-.. _4: https://reviews.llvm.org/D83242
+.. _0: https://github.com/llvm/llvm-project/commit/6b01b465388b204d543da3cf49efd6080db094a9
+.. _1: https://github.com/llvm/llvm-project/commit/072cde03aaa13a2c57acf62d79876bf79aa1919f
+.. _2: https://github.com/llvm/llvm-project/commit/00602ee7ef0bf6c68d690a2bd729c12b95c95c99
+.. _3: https://github.com/llvm/llvm-project/commit/6d218b4adb093ff2e9764febbbc89f429412006c
+.. _4: https://github.com/llvm/llvm-project/commit/6d6750696400e7ce988d66a1a00e1d0cb32815f8
 
 Floating-point tests and Clang version
 ======================================
···
 types, which was introduced in `Clang 13`__. The older Clang versions will
 either crash when compiling these tests, or generate an incorrect BTF.
 
-__  https://reviews.llvm.org/D83289
+__  https://github.com/llvm/llvm-project/commit/a7137b238a07d9399d3ae96c0b461571bd5aa8b2
 
 Kernel function call test and Clang version
 ===========================================
···
 
   libbpf: failed to find BTF for extern 'tcp_slow_start' [25] section: -2
 
-__ https://reviews.llvm.org/D93563
+__ https://github.com/llvm/llvm-project/commit/886f9ff53155075bd5f1e994f17b85d1e1b7470c
 
 btf_tag test and Clang version
 ==============================
···
 
   #<test_num> btf_tag:SKIP
 
-.. _0: https://reviews.llvm.org/D111588
-.. _1: https://reviews.llvm.org/D111199
+.. _0: https://github.com/llvm/llvm-project/commit/a162b67c98066218d0d00aa13b99afb95d9bb5e6
+.. _1: https://github.com/llvm/llvm-project/commit/3466e00716e12e32fdb100e3fcfca5c2b3e8d784
 
 Clang dependencies for static linking tests
 ===========================================
···
 generate valid BTF information for weak variables. Please make sure you use
 Clang that contains the fix.
 
-__ https://reviews.llvm.org/D100362
+__ https://github.com/llvm/llvm-project/commit/968292cb93198442138128d850fd54dc7edc0035
 
 Clang relocation changes
 ========================
···
 To fix this issue, user newer libbpf.
 
 .. Links
-.. _clang reloc patch: https://reviews.llvm.org/D102712
+.. _clang reloc patch: https://github.com/llvm/llvm-project/commit/6a2ea84600ba4bd3b2733bd8f08f5115eb32164b
 .. _kernel llvm reloc: /Documentation/bpf/llvm_reloc.rst
 
 Clang dependencies for the u32 spill test (xdpwall)
···
 
 .. code-block:: console
 
-  test_xdpwall:FAIL:Does LLVM have https://reviews.llvm.org/D109073? unexpected error: -4007
+  test_xdpwall:FAIL:Does LLVM have https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d5? unexpected error: -4007
 
-__ https://reviews.llvm.org/D109073
+__ https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d5

tools/testing/selftests/bpf/prog_tests/xdpwall.c

···
 	struct xdpwall *skel;
 
 	skel = xdpwall__open_and_load();
-	ASSERT_OK_PTR(skel, "Does LLMV have https://reviews.llvm.org/D109073?");
+	ASSERT_OK_PTR(skel, "Does LLVM have https://github.com/llvm/llvm-project/commit/ea72b0319d7b0f0c2fcf41d121afa5d031b319d5?");
 
 	xdpwall__destroy(skel);
 }

tools/testing/selftests/bpf/progs/test_core_reloc_type_id.c

···
 	 * to detect whether this test has to be executed, however strange
 	 * that might look like.
 	 *
-	 *   [0] https://reviews.llvm.org/D85174
+	 *   [0] https://github.com/llvm/llvm-project/commit/00602ee7ef0bf6c68d690a2bd729c12b95c95c99
 	 */
 #if __has_builtin(__builtin_preserve_type_info)
 	struct core_reloc_type_id_output *out = (void *)&data.out;