[clang] Add combines/simplifications for `llvm.ptrmask` (PR #67166)

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git-clang-format --diff 9c5b38b49fa2a1a81dac78faa0a8432eff495615 7a93fe3f3dbf8c6e5afad08f0a6e880c66f34f46 -- clang/test/CodeGen/arm64_32-vaarg.c llvm/lib/Analysis/InstructionSimplify.cpp llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp llvm/lib/Transforms/InstCombine/InstCombineInternal.h llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index 5a5334b13..7902eb0c6 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -59,7 +59,8 @@ static unsigned getBitWidth(Type *Ty, const DataLayout &DL) {
 
 /// Inst is an integer instruction that SimplifyDemandedBits knows about. See if
 /// the instruction has any properties that allow us to simplify its operands.
-bool InstCombinerImpl::SimplifyDemandedInstructionBits(Instruction &Inst, KnownBits &Known) {
+bool InstCombinerImpl::SimplifyDemandedInstructionBits(Instruction &Inst,
+                                                       KnownBits &Known) {
   APInt DemandedMask(APInt::getAllOnes(Known.getBitWidth()));
   Value *V = SimplifyDemandedUseBits(&Inst, DemandedMask, Known,
                                      0, &Inst);

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https://github.com/llvm/llvm-project/pull/67166