gnu: LLVM, Clang: Update to 12.0.1.

* gnu/packages/patches/clang-12-tools-extra-directory.patch: Delete file.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/llvm.scm (llvm-12, clang-runtime-12): Update to 12.0.1.
(clang-12): Likewise.  Remove obsolete patch.

gnu/local.mk

@@ -920,7 +920,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/clang-9.0-libc-search-path.patch		\
   %D%/packages/patches/clang-10.0-libc-search-path.patch	\
   %D%/packages/patches/clang-11.0-libc-search-path.patch	\
-  %D%/packages/patches/clang-12-tools-extra-directory.patch	\
   %D%/packages/patches/clang-runtime-asan-build-fixes.patch	\
   %D%/packages/patches/clang-runtime-esan-build-fixes.patch	\
   %D%/packages/patches/clang-runtime-9-libsanitizer-mode-field.patch	\

gnu/packages/llvm.scm

@@ -480,14 +480,14 @@ (define (make-clang-toolchain clang)
 (define-public llvm-12
   (package
     (name "llvm")
-    (version "12.0.0")
+    (version "12.0.1")
     (source
      (origin
       (method url-fetch)
       (uri (llvm-uri "llvm" version))
       (sha256
        (base32
-        "0l4b79gwfvxild974aigcq1yigypjsk2j5p59syhl6ksd744gp29"))))
+        "1pzx9zrmd7r3481sbhwvkms68fwhffpp4mmz45dgrkjpyl2q96kx"))))
     (build-system cmake-build-system)
     (outputs '("out" "opt-viewer"))
     (native-inputs
@@ -542,22 +542,20 @@ (define-public llvm-12
 (define-public clang-runtime-12
   (clang-runtime-from-llvm
    llvm-12
-   "0d444qihq9jhqnfv003cr704v363va72zl6qaw2algj1c85cva45"))
+   "1950rg294izdwkaasi7yjrmadc9mzdd5paf0q63jjcq2m3rdbj5l"))
 
 (define-public clang-12
   (clang-from-llvm llvm-12 clang-runtime-12
-                   "1vd9rhhrd8ghdg111lac7w8by71y9l14yh5zxfijsm6lj4p4avp2"
+                   "0px4gl27az6cdz6adds89qzdwb1cqpjsfvrldbz9qvpmphrj34bf"
                    #:patches '("clang-11.0-libc-search-path.patch")
                    #:tools-extra
                    (origin
                      (method url-fetch)
                      (uri (llvm-uri "clang-tools-extra"
                                     (package-version llvm-12)))
-                     (patches
-                      (search-patches "clang-12-tools-extra-directory.patch"))
                      (sha256
                       (base32
-                       "0p3dzr0qa7mar83y66xa5m5apynf6ia0lsdsq6axwnm64ysy0hdd")))))
+                       "1r9a4fdz9ci58b5z2inwvm4z4cdp6scrivnaw05dggkxz7yrwrb5")))))
 
 (define-public clang-toolchain-12
   (make-clang-toolchain clang-12))

gnu/packages/patches/clang-12-tools-extra-directory.patch

@@ -1,16 +0,0 @@
-Help CMake locate the "tools-extra" directory.
-
-Taken from <https://bugs.llvm.org/show_bug.cgi?id=49990#c3>.
-
-diff --git a/clang-tools-extra/clangd/quality/CompletionModel.cmake b/clang-tools-extra/clangd/quality/CompletionModel.cmake
---- a/clangd/quality/CompletionModel.cmake
-+++ b/clangd/quality/CompletionModel.cmake
-@@ -5,7 +5,7 @@
- # will define a C++ class called ${cpp_class} - which may be a
- # namespace-qualified class name.
- function(gen_decision_forest model filename cpp_class)
--  set(model_compiler ${CMAKE_SOURCE_DIR}/../clang-tools-extra/clangd/quality/CompletionModelCodegen.py)
-+  set(model_compiler ${CMAKE_CURRENT_LIST_DIR}/quality/CompletionModelCodegen.py)
-   
-   set(output_dir ${CMAKE_CURRENT_BINARY_DIR})
-   set(header_file ${output_dir}/${filename}.h)