Fix parameter name comments using clang-tidy. NFC.

This patch applies clang-tidy's bugprone-argument-comment tool
to LLVM, clang and lld source trees. Here is how I created this
patch:

$ git clone https://github.com/llvm/llvm-project.git
$ cd llvm-project
$ mkdir build
$ cd build
$ cmake -GNinja -DCMAKE_BUILD_TYPE=Debug \
    -DLLVM_ENABLE_PROJECTS='clang;lld;clang-tools-extra' \
    -DCMAKE_EXPORT_COMPILE_COMMANDS=On -DLLVM_ENABLE_LLD=On \
    -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ ../llvm
$ ninja
$ parallel clang-tidy -checks='-*,bugprone-argument-comment' \
    -config='{CheckOptions: [{key: StrictMode, value: 1}]}' -fix \
    ::: ../llvm/lib/**/*.{cpp,h} ../clang/lib/**/*.{cpp,h} ../lld/**/*.{cpp,h}

llvm-svn: 366177
diff --git a/clang/lib/CodeGen/CGStmtOpenMP.cpp b/clang/lib/CodeGen/CGStmtOpenMP.cpp
index a5396a3..e8fbca5 100644
--- a/clang/lib/CodeGen/CGStmtOpenMP.cpp
+++ b/clang/lib/CodeGen/CGStmtOpenMP.cpp
@@ -3603,7 +3603,7 @@
     CGF.EmitAtomicStore(RVal, LVal,
                         IsSeqCst ? llvm::AtomicOrdering::SequentiallyConsistent
                                  : llvm::AtomicOrdering::Monotonic,
-                        LVal.isVolatile(), /*IsInit=*/false);
+                        LVal.isVolatile(), /*isInit=*/false);
   }
 }
 
@@ -4095,7 +4095,7 @@
     // Emit calculation of the iterations count.
     llvm::Value *NumIterations = CGF.EmitScalarExpr(D.getNumIterations());
     NumIterations = CGF.Builder.CreateIntCast(NumIterations, CGF.Int64Ty,
-                                              /*IsSigned=*/false);
+                                              /*isSigned=*/false);
     return NumIterations;
   };
   if (IsOffloadEntry)