[llvm] Simplify hot-path size computations in BumpPtrAllocator. (PR #101312)

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git-clang-format --diff 07d2709a17860a202d91781769a88837e4fb5f2a d5cc47831ecd9f0a2b164b16da67f74b94e9aafc --extensions h -- llvm/include/llvm/Support/Allocator.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/include/llvm/Support/Allocator.h b/llvm/include/llvm/Support/Allocator.h
index d9a4f6599e..26ea8d6f47 100644
--- a/llvm/include/llvm/Support/Allocator.h
+++ b/llvm/include/llvm/Support/Allocator.h
@@ -149,7 +149,7 @@ public:
     // Keep track of how many bytes we've allocated.
     BytesAllocated += Size;
 
-    char* AlignedPtr = reinterpret_cast<char*>(alignAddr(CurPtr, Alignment));
+    char *AlignedPtr = reinterpret_cast<char *>(alignAddr(CurPtr, Alignment));
 
     size_t SizeToAllocate = Size;
 #if LLVM_ADDRESS_SANITIZER_BUILD
@@ -157,7 +157,7 @@ public:
     SizeToAllocate += RedZoneSize;
 #endif
 
-    char* AllocEndPtr = AlignedPtr + SizeToAllocate;
+    char *AllocEndPtr = AlignedPtr + SizeToAllocate;
 
     // Check if we have enough space.
     if (LLVM_LIKELY(AllocEndPtr <= End

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https://github.com/llvm/llvm-project/pull/101312