1 files changed, 45 insertions, 0 deletions
diff --git a/build/build-clang/llvmorg-17-init-237-g1b9fbc81ff15.patch b/build/build-clang/llvmorg-17-init-237-g1b9fbc81ff15.patch
new file mode 100644
index 0000000000..4283a1f17a
--- /dev/null
+++ b/build/build-clang/llvmorg-17-init-237-g1b9fbc81ff15.patch
@@ -0,0 +1,45 @@
+From 1b9fbc81ff15f6ad5a0e7f29c486c6edd0bce94c Mon Sep 17 00:00:00 2001
+From: Mike Hommey <mh@glandium.org>
+Date: Thu, 26 Jan 2023 21:28:09 +0100
+Subject: [PATCH] [extract_symbols.py] Filter out more symbols for MSVC
+
+This strips out about 5k symbols.
+
+Fixes https://github.com/llvm/llvm-project/issues/60109
+
+Reviewed By: john.brawn
+
+Differential Revision: https://reviews.llvm.org/D142431
+---
+ llvm/utils/extract_symbols.py | 8 +++++++-
+ 1 file changed, 7 insertions(+), 1 deletion(-)
+
+diff --git a/llvm/utils/extract_symbols.py b/llvm/utils/extract_symbols.py
+index 0f8e8ba64c80..298ee6ba4eeb 100755
+--- a/llvm/utils/extract_symbols.py
++++ b/llvm/utils/extract_symbols.py
+@@ -141,7 +141,10 @@ def should_keep_microsoft_symbol(symbol, calling_convention_decoration):
+             # Remove calling convention decoration from names
+             match = re.match('[_@]([^@]+)', symbol)
+             if match:
+-                return match.group(1)
++                symbol = match.group(1)
++        # Discard floating point/SIMD constants.
++        if symbol.startswith(("__xmm@", "__ymm@", "__real@")):
++            return None
+         return symbol
+     # Function template instantiations start with ?$; keep the instantiations of
+     # clang::Type::getAs, as some of them are explipict specializations that are
+@@ -165,6 +168,9 @@ def should_keep_microsoft_symbol(symbol, calling_convention_decoration):
+     # namespace doesn't exist outside of that translation unit.
+     elif re.search('\?A(0x\w+)?@', symbol):
+         return None
++    # Skip X86GenMnemonicTables functions, they are not exposed from llvm/include/.
++    elif re.match('\?is[A-Z0-9]*@X86@llvm', symbol):
++        return None
+     # Keep mangled llvm:: and clang:: function symbols. How we detect these is a
+     # bit of a mess and imprecise, but that avoids having to completely demangle
+     # the symbol name. The outermost namespace is at the end of the identifier
+-- 
+2.39.0.1.g6739ec1790
+