[upstream_utils] Upgrade to LLVM 22.1.6 (#8919)

upstream_utils/llvm_patches/0027-raw_ostream-Add-SetNumBytesInBuffer.patch

@@ -0,0 +1,25 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Peter Johnson <johnson.peter@gmail.com>
+Date: Sun, 29 Oct 2023 23:00:08 -0700
+Subject: [PATCH 27/33] raw_ostream: Add SetNumBytesInBuffer
+
+---
+ llvm/include/llvm/Support/raw_ostream.h | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/llvm/include/llvm/Support/raw_ostream.h b/llvm/include/llvm/Support/raw_ostream.h
+index f2df534b6bd7a37840fc0c3dba0f657b8b90812e..5289d11d630cc57deebff6647c684fa26a70a16a 100644
+--- a/llvm/include/llvm/Support/raw_ostream.h
++++ b/llvm/include/llvm/Support/raw_ostream.h
+@@ -366,6 +366,11 @@ protected:
+     SetBufferAndMode(BufferStart, Size, BufferKind::ExternalBuffer);
+   }
+ 
++  /// Force-set the number of bytes in the raw_ostream buffer.
++  void SetNumBytesInBuffer(size_t Size) {
++    OutBufCur = OutBufStart + Size;
++  }
++
+   /// Return an efficient buffer size for the underlying output mechanism.
+   virtual size_t preferred_buffer_size() const;
+