[llvm] [X86] Don't always seperate conditions in `(br (and/or cond0, cond1))` into seperate branches (PR #81689)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff 79ce933114e46c891a5632f7ad4a004b93a5b808 b8e2f05c984f11369d52169a482289d4394aa53c -- llvm/include/llvm/CodeGen/TargetLowering.h llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp llvm/lib/Target/X86/X86ISelLowering.cpp llvm/lib/Target/X86/X86ISelLowering.h
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 8ff48630cf..9931aadfd6 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -81,23 +81,14 @@ static cl::opt<int> ExperimentalPrefInnermostLoopAlignment(
         "alignment set by x86-experimental-pref-loop-alignment."),
     cl::Hidden);
 
-static cl::opt<int> BrMergingBaseCostThresh(
-    "x86-cond-base", cl::init(1),
-    cl::desc(
-        "Base."),
-    cl::Hidden);
+static cl::opt<int> BrMergingBaseCostThresh("x86-cond-base", cl::init(1),
+                                            cl::desc("Base."), cl::Hidden);
 
-static cl::opt<int> BrMergingLikelyBias(
-    "x86-cond-likely-bias", cl::init(0),
-    cl::desc(
-        "Likely."),
-    cl::Hidden);
+static cl::opt<int> BrMergingLikelyBias("x86-cond-likely-bias", cl::init(0),
+                                        cl::desc("Likely."), cl::Hidden);
 
-static cl::opt<int> BrMergingUnlikelyBias(
-    "x86-cond-unlikely-bias", cl::init(1),
-    cl::desc(
-        "Unlikely."),
-    cl::Hidden);
+static cl::opt<int> BrMergingUnlikelyBias("x86-cond-unlikely-bias", cl::init(1),
+                                          cl::desc("Unlikely."), cl::Hidden);
 
 static cl::opt<bool> MulConstantOptimization(
     "mul-constant-optimization", cl::init(true),

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https://github.com/llvm/llvm-project/pull/81689