diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmParsers.def b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmParsers.def
index 6d84e12..bce0713 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmParsers.def
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmParsers.def
@@ -24,21 +24,21 @@
 #  error Please define the macro LLVM_ASM_PARSER(TargetName)
 #endif
 
+#if defined(__aarch64__)
 LLVM_ASM_PARSER(AArch64)
-LLVM_ASM_PARSER(AMDGPU)
+#endif
+#if defined(__arm__)
 LLVM_ASM_PARSER(ARM)
-LLVM_ASM_PARSER(AVR)
-LLVM_ASM_PARSER(BPF)
-LLVM_ASM_PARSER(Hexagon)
-LLVM_ASM_PARSER(Lanai)
-LLVM_ASM_PARSER(Mips)
-LLVM_ASM_PARSER(MSP430)
-LLVM_ASM_PARSER(PowerPC)
-LLVM_ASM_PARSER(RISCV)
-LLVM_ASM_PARSER(Sparc)
-LLVM_ASM_PARSER(SystemZ)
-LLVM_ASM_PARSER(WebAssembly)
+#endif
+#if defined(__i386__) || defined(__x86_64__)
 LLVM_ASM_PARSER(X86)
+#endif
+#if defined(__mips__)
+LLVM_ASM_PARSER(Mips)
+#endif
+#if defined(__powerpc64__)
+LLVM_ASM_PARSER(PowerPC)
+#endif
 
 
 #undef LLVM_ASM_PARSER
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmPrinters.def b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmPrinters.def
index 335e10b..112b1a4 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmPrinters.def
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/AsmPrinters.def
@@ -24,23 +24,21 @@
 #  error Please define the macro LLVM_ASM_PRINTER(TargetName)
 #endif
 
+#if defined(__aarch64__)
 LLVM_ASM_PRINTER(AArch64)
-LLVM_ASM_PRINTER(AMDGPU)
+#endif
+#if defined(__arm__)
 LLVM_ASM_PRINTER(ARM)
-LLVM_ASM_PRINTER(AVR)
-LLVM_ASM_PRINTER(BPF)
-LLVM_ASM_PRINTER(Hexagon)
-LLVM_ASM_PRINTER(Lanai)
-LLVM_ASM_PRINTER(Mips)
-LLVM_ASM_PRINTER(MSP430)
-LLVM_ASM_PRINTER(NVPTX)
-LLVM_ASM_PRINTER(PowerPC)
-LLVM_ASM_PRINTER(RISCV)
-LLVM_ASM_PRINTER(Sparc)
-LLVM_ASM_PRINTER(SystemZ)
-LLVM_ASM_PRINTER(WebAssembly)
+#endif
+#if defined(__i386__) || defined(__x86_64__)
 LLVM_ASM_PRINTER(X86)
-LLVM_ASM_PRINTER(XCore)
+#endif
+#if defined(__mips__)
+LLVM_ASM_PRINTER(Mips)
+#endif
+#if defined(__powerpc64__)
+LLVM_ASM_PRINTER(PowerPC)
+#endif
 
 
 #undef LLVM_ASM_PRINTER
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Disassemblers.def b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Disassemblers.def
index f119100..850983c 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Disassemblers.def
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Disassemblers.def
@@ -24,22 +24,21 @@
 #  error Please define the macro LLVM_DISASSEMBLER(TargetName)
 #endif
 
+#if defined(__aarch64__)
 LLVM_DISASSEMBLER(AArch64)
-LLVM_DISASSEMBLER(AMDGPU)
+#endif
+#if defined(__arm__)
 LLVM_DISASSEMBLER(ARM)
-LLVM_DISASSEMBLER(AVR)
-LLVM_DISASSEMBLER(BPF)
-LLVM_DISASSEMBLER(Hexagon)
-LLVM_DISASSEMBLER(Lanai)
-LLVM_DISASSEMBLER(Mips)
-LLVM_DISASSEMBLER(MSP430)
-LLVM_DISASSEMBLER(PowerPC)
-LLVM_DISASSEMBLER(RISCV)
-LLVM_DISASSEMBLER(Sparc)
-LLVM_DISASSEMBLER(SystemZ)
-LLVM_DISASSEMBLER(WebAssembly)
+#endif
+#if defined(__i386__) || defined(__x86_64__)
 LLVM_DISASSEMBLER(X86)
-LLVM_DISASSEMBLER(XCore)
+#endif
+#if defined(__mips__)
+LLVM_DISASSEMBLER(Mips)
+#endif
+#if defined(__powerpc64__)
+LLVM_DISASSEMBLER(PowerPC)
+#endif
 
 
 #undef LLVM_DISASSEMBLER
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Targets.def b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Targets.def
index 512f416..103d30a 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Targets.def
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/Targets.def
@@ -23,23 +23,21 @@
 #  error Please define the macro LLVM_TARGET(TargetName)
 #endif
 
+#if defined(__aarch64__)
 LLVM_TARGET(AArch64)
-LLVM_TARGET(AMDGPU)
+#endif
+#if defined(__arm__)
 LLVM_TARGET(ARM)
-LLVM_TARGET(AVR)
-LLVM_TARGET(BPF)
-LLVM_TARGET(Hexagon)
-LLVM_TARGET(Lanai)
-LLVM_TARGET(Mips)
-LLVM_TARGET(MSP430)
-LLVM_TARGET(NVPTX)
-LLVM_TARGET(PowerPC)
-LLVM_TARGET(RISCV)
-LLVM_TARGET(Sparc)
-LLVM_TARGET(SystemZ)
-LLVM_TARGET(WebAssembly)
+#endif
+#if defined(__i386__) || defined(__x86_64__)
 LLVM_TARGET(X86)
-LLVM_TARGET(XCore)
+#endif
+#if defined(__mips__)
+LLVM_TARGET(Mips)
+#endif
+#if defined(__powerpc64__)
+LLVM_TARGET(PowerPC)
+#endif
 
 
 #undef LLVM_TARGET
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/abi-breaking.h b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/abi-breaking.h
index e3ed314..fd32bf3 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/abi-breaking.h
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/abi-breaking.h
@@ -13,7 +13,7 @@
 #define LLVM_ABI_BREAKING_CHECKS_H
 
 /* Define to enable checks that alter the LLVM C++ ABI */
-#define LLVM_ENABLE_ABI_BREAKING_CHECKS 1
+#define LLVM_ENABLE_ABI_BREAKING_CHECKS 0
 
 /* Define to enable reverse iteration of unordered llvm containers */
 #define LLVM_ENABLE_REVERSE_ITERATION 0
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/config.h b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/config.h
index 11f556f..1d39eb8 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/config.h
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/config.h
@@ -8,18 +8,18 @@
 #define BUG_REPORT_URL "https://bugs.llvm.org/"
 
 /* Define to 1 to enable backtraces, and to 0 otherwise. */
-#define ENABLE_BACKTRACES 1
+/* #undef ENABLE_BACKTRACES */
 
 /* Define to 1 to enable crash overrides, and to 0 otherwise. */
-#define ENABLE_CRASH_OVERRIDES 1
+/* #undef ENABLE_CRASH_OVERRIDES */
 
 /* Define to 1 to enable crash memory dumps, and to 0 otherwise. */
 #define LLVM_ENABLE_CRASH_DUMPS 0
 
 /* Define to 1 if you have the `backtrace' function. */
-#define HAVE_BACKTRACE TRUE
+/* #undef HAVE_BACKTRACE */
 
-#define BACKTRACE_HEADER <execinfo.h>
+/* #undef BACKTRACE_HEADER */
 
 /* Define to 1 if you have the <CrashReporterClient.h> header file. */
 /* #undef HAVE_CRASHREPORTERCLIENT_H */
@@ -92,7 +92,7 @@
 #define HAVE_ISATTY 1
 
 /* Define to 1 if you have the `edit' library (-ledit). */
-#define HAVE_LIBEDIT 1
+/* #undef HAVE_LIBEDIT */
 
 /* Define to 1 if you have the `pfm' library (-lpfm). */
 /* #undef HAVE_LIBPFM */
@@ -104,13 +104,13 @@
 #define HAVE_LIBPTHREAD 1
 
 /* Define to 1 if you have the `pthread_getname_np' function. */
-#define HAVE_PTHREAD_GETNAME_NP 1
+/* #undef HAVE_PTHREAD_GETNAME_NP */
 
 /* Define to 1 if you have the `pthread_setname_np' function. */
-#define HAVE_PTHREAD_SETNAME_NP 1
+/* #undef HAVE_PTHREAD_SETNAME_NP */
 
 /* Define to 1 if you have the `z' library (-lz). */
-#define HAVE_LIBZ 1
+/* #undef HAVE_LIBZ */
 
 /* Define to 1 if you have the <link.h> header file. */
 /* #undef HAVE_LINK_H */
@@ -137,7 +137,7 @@
 /* #undef HAVE_POSIX_FALLOCATE */
 
 /* Define to 1 if you have the `posix_spawn' function. */
-#define HAVE_POSIX_SPAWN 1
+/* #undef HAVE_POSIX_SPAWN */
 
 /* Define to 1 if you have the `pread' function. */
 #define HAVE_PREAD 1
@@ -212,13 +212,13 @@
 #define HAVE_SYS_TYPES_H 1
 
 /* Define if the setupterm() function is supported this platform. */
-/* #define HAVE_TERMINFO 1 */
+/* #undef HAVE_TERMINFO */
 
 /* Define if the xar_open() function is supported this platform. */
 #define HAVE_LIBXAR 1
 
 /* Define to 1 if you have the <termios.h> header file. */
-#define HAVE_TERMIOS_H 1
+/* #undef HAVE_TERMIOS_H */
 
 /* Define to 1 if you have the <unistd.h> header file. */
 #define HAVE_UNISTD_H 1
@@ -227,7 +227,7 @@
 /* #undef HAVE_VALGRIND_VALGRIND_H */
 
 /* Define to 1 if you have the <zlib.h> header file. */
-#define HAVE_ZLIB_H 1
+/* #undef HAVE_ZLIB_H */
 
 /* Have host's _alloca */
 /* #undef HAVE__ALLOCA */
@@ -236,7 +236,7 @@
 /* #undef HAVE__CHSIZE_S */
 
 /* Define to 1 if you have the `_Unwind_Backtrace' function. */
-#define HAVE__UNWIND_BACKTRACE 1
+/* #undef HAVE__UNWIND_BACKTRACE */
 
 /* Have host's __alloca */
 /* #undef HAVE___ALLOCA */
@@ -294,10 +294,14 @@
 
 /* Target triple LLVM will generate code for by default */
 /* Doesn't use `cmakedefine` because it is allowed to be empty. */
-#define LLVM_DEFAULT_TARGET_TRIPLE "x86_64-apple-darwin19.3.0"
+#if defined(__x86_64__)
+#define LLVM_DEFAULT_TARGET_TRIPLE "x86_64-apple-darwin"
+#else
+#error "unknown architecture"
+#endif
 
 /* Define if zlib compression is available */
-#define LLVM_ENABLE_ZLIB 1
+#define LLVM_ENABLE_ZLIB 0
 
 /* Define if overriding target triple is enabled */
 /* #undef LLVM_TARGET_TRIPLE_ENV */
@@ -309,7 +313,7 @@
 #define LLVM_VERSION_PRINTER_SHOW_HOST_TARGET_INFO 1
 
 /* Define if libxml2 is supported on this platform. */
-#define LLVM_LIBXML2_ENABLED 1
+/* #undef LLVM_LIBXML2_ENABLED */
 
 /* Define to the extension used for shared libraries, say, ".so". */
 #define LTDL_SHLIB_EXT ".dylib"
@@ -321,10 +325,10 @@
 #define PACKAGE_NAME "LLVM"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "LLVM 11.0.0git"
+#define PACKAGE_STRING "LLVM 10.0.0"
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "11.0.0git"
+#define PACKAGE_VERSION "10.0.0"
 
 /* Define to the vendor of this package. */
 /* #undef PACKAGE_VENDOR */
@@ -351,6 +355,6 @@
 /* #undef LLVM_GISEL_COV_PREFIX */
 
 /* Whether Timers signpost passes in Xcode Instruments */
-#define LLVM_SUPPORT_XCODE_SIGNPOSTS 1
+#define LLVM_SUPPORT_XCODE_SIGNPOSTS 0
 
 #endif
diff --git a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/llvm-config.h b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/llvm-config.h
index 527cb0c..b09df0d 100644
--- a/third_party/llvm-10.0/configs/darwin/include/llvm/Config/llvm-config.h
+++ b/third_party/llvm-10.0/configs/darwin/include/llvm/Config/llvm-config.h
@@ -14,11 +14,25 @@
 #ifndef LLVM_CONFIG_H
 #define LLVM_CONFIG_H
 
+#if !defined(__i386__) && defined(_M_IX86)
+#define __i386__ 1
+#endif
+
+#if !defined(__x86_64__) && (defined(_M_AMD64) || defined (_M_X64))
+#define __x86_64__ 1
+#endif
+
+#define LLVM_CONFIG_H
+
 /* Define if LLVM_ENABLE_DUMP is enabled */
 /* #undef LLVM_ENABLE_DUMP */
 
 /* Target triple LLVM will generate code for by default */
-#define LLVM_DEFAULT_TARGET_TRIPLE "x86_64-apple-darwin19.3.0"
+#if defined(__x86_64__)
+#define LLVM_DEFAULT_TARGET_TRIPLE "x86_64-apple-darwin"
+#else
+#error "unknown architecture"
+#endif
 
 /* Define if threads enabled */
 #define LLVM_ENABLE_THREADS 1
@@ -27,28 +41,116 @@
 #define LLVM_HAS_ATOMICS 1
 
 /* Host triple LLVM will be executed on */
-#define LLVM_HOST_TRIPLE "x86_64-apple-darwin19.3.0"
+#if defined(__x86_64__)
+#define LLVM_HOST_TRIPLE "x86_64-apple-darwin"
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM architecture name for the native architecture, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_ARCH AArch64
+#elif defined(__arm__)
+#define LLVM_NATIVE_ARCH ARM
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_ARCH X86
+#elif defined(__mips__)
+#define LLVM_NATIVE_ARCH Mips
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_ARCH PowerPC
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native AsmParser init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_ASMPARSER LLVMInitializeAArch64AsmParser
+#elif defined(__arm__)
+#define LLVM_NATIVE_ASMPARSER LLVMInitializeARMAsmParser
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_ASMPARSER LLVMInitializeX86AsmParser
+#elif defined(__mips__)
+#define LLVM_NATIVE_ASMPARSER LLVMInitializeMipsAsmParser
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_ASMPARSER LLVMInitializePowerPCAsmParser
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native AsmPrinter init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_ASMPRINTER LLVMInitializeAArch64AsmPrinter
+#elif defined(__arm__)
+#define LLVM_NATIVE_ASMPRINTER LLVMInitializeARMAsmPrinter
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_ASMPRINTER LLVMInitializeX86AsmPrinter
+#elif defined(__mips__)
+#define LLVM_NATIVE_ASMPRINTER LLVMInitializeMipsAsmPrinter
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_ASMPRINTER LLVMInitializePowerPCAsmPrinter
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native Disassembler init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_DISASSEMBLER LLVMInitializeAArch64Disassembler
+#elif defined(__arm__)
+#define LLVM_NATIVE_DISASSEMBLER LLVMInitializeARMDisassembler
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_DISASSEMBLER LLVMInitializeX86Disassembler
+#elif defined(__mips__)
+#define LLVM_NATIVE_DISASSEMBLER LLVMInitializeMipsDisassembler
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_DISASSEMBLER LLVMInitializePowerPCDisassembler
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native Target init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_TARGET LLVMInitializeAArch64Target
+#elif defined(__arm__)
+#define LLVM_NATIVE_TARGET LLVMInitializeARMTarget
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_TARGET LLVMInitializeX86Target
+#elif defined(__mips__)
+#define LLVM_NATIVE_TARGET LLVMInitializeMipsTarget
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_TARGET LLVMInitializePowerPCTarget
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native TargetInfo init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_TARGETINFO LLVMInitializeAArch64TargetInfo
+#elif defined(__arm__)
+#define LLVM_NATIVE_TARGETINFO LLVMInitializeARMTargetInfo
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_TARGETINFO LLVMInitializeX86TargetInfo
+#elif defined(__mips__)
+#define LLVM_NATIVE_TARGETINFO LLVMInitializeMipsTargetInfo
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_TARGETINFO LLVMInitializePowerPCTargetInfo
+#else
+#error "unknown architecture"
+#endif
 
 /* LLVM name for the native target MC init function, if available */
+#if defined(__aarch64__)
+#define LLVM_NATIVE_TARGETMC LLVMInitializeAArch64TargetMC
+#elif defined(__arm__)
+#define LLVM_NATIVE_TARGETMC LLVMInitializeARMTargetMC
+#elif defined(__i386__) || defined(__x86_64__)
 #define LLVM_NATIVE_TARGETMC LLVMInitializeX86TargetMC
+#elif defined(__mips__)
+#define LLVM_NATIVE_TARGETMC LLVMInitializeMipsTargetMC
+#elif defined(__powerpc64__)
+#define LLVM_NATIVE_TARGETMC LLVMInitializePowerPCTargetMC
+#else
+#error "unknown architecture"
+#endif
 
 /* Define if this is Unixish platform */
 #define LLVM_ON_UNIX 1
@@ -72,7 +174,7 @@
 #define LLVM_VERSION_PATCH 0
 
 /* LLVM version string */
-#define LLVM_VERSION_STRING "11.0.0git"
+#define LLVM_VERSION_STRING "10.0.0"
 
 /* Whether LLVM records statistics for use with GetStatistics(),
  * PrintStatistics() or PrintStatisticsJSON()