[llvm] [AggressiveInstCombine] POPCNT generation for bit-count pattern (PR #177109)

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``````````bash
git-clang-format --diff origin/main HEAD --extensions cpp -- llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp --diff_from_common_commit
``````````

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``````````diff
diff --git a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp b/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
index 761845abe..21906f238 100644
--- a/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
+++ b/llvm/lib/Transforms/AggressiveInstCombine/AggressiveInstCombine.cpp
@@ -411,7 +411,7 @@ static bool tryToRecognizePopCount(Instruction &I) {
 // }
 static bool tryToRecognizePopCount1(Instruction &I) {
   if (I.getOpcode() != Instruction::Add)
-     return false;
+    return false;
 
   Type *Ty = I.getType();
   if (!Ty->isIntOrIntVectorTy())
@@ -427,7 +427,7 @@ static bool tryToRecognizePopCount1(Instruction &I) {
 
   APInt Mask55 = APInt::getSplat(Len, APInt(8, 0x55));
   APInt Mask33 = APInt::getSplat(Len, APInt(8, 0x33));
-  
+
   Value *ShiftOp;
   Value *Start = &I;
   for (unsigned I = Len; I >= 8; I = I / 2) {

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https://github.com/llvm/llvm-project/pull/177109