[llvm] Optimize (shift x (and y, BitWidth - 1)) to (shift x, y) (PR #73889)

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``````````bash
git-clang-format --diff 246b8eae20564e2c34690803efdbaa9cec7c90a1 a7782e84e816d84ec1032f66f968b8b9ff772bb1 -- llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp llvm/lib/Target/Mips/MipsISelDAGToDAG.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
index 2c819b6c2a..12b35a0e43 100644
--- a/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
+++ b/llvm/lib/Target/Mips/MipsISelDAGToDAG.cpp
@@ -32,8 +32,8 @@
 #include "llvm/IR/Type.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/KnownBits.h"
+#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetMachine.h"
 using namespace llvm;
 
@@ -327,12 +327,16 @@ bool MipsDAGToDAGISel::SelectInlineAsmMemoryOperand(
 }
 
 bool MipsDAGToDAGISel::isUnneededShiftMask(SDNode *N,
-                                             unsigned ShAmtBits) const {
+                                           unsigned ShAmtBits) const {
   assert(N->getOpcode() == ISD::AND && "Unexpected opcode");
 
   const APInt &RHS = cast<ConstantSDNode>(N->getOperand(1))->getAPIntValue();
   if (RHS.countr_one() >= ShAmtBits) {
-    LLVM_DEBUG(dbgs() << DEBUG_TYPE << " Need optimize 'and & shl/srl/sra' and operand value bits is " << RHS.countr_one() << "\n");
+    LLVM_DEBUG(
+        dbgs()
+        << DEBUG_TYPE
+        << " Need optimize 'and & shl/srl/sra' and operand value bits is "
+        << RHS.countr_one() << "\n");
     return true;
   }
 
diff --git a/llvm/lib/Target/Mips/MipsISelDAGToDAG.h b/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
index 7136f691d2..52207d0f62 100644
--- a/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
+++ b/llvm/lib/Target/Mips/MipsISelDAGToDAG.h
@@ -144,7 +144,6 @@ private:
                                     InlineAsm::ConstraintCode ConstraintID,
                                     std::vector<SDValue> &OutOps) override;
   bool isUnneededShiftMask(SDNode *N, unsigned ShAmtBits) const;
-
 };
 }
 

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https://github.com/llvm/llvm-project/pull/73889