[LowerMatrixIntrinsics][NewPM] Fix PreservedAnalyses result

[aeubanks]

Summary

PreservedCFGCheckerInstrumentation was saying that LowerMatrixIntrinsics
didn't properly preserve CFG even though it claimed to. The legacy pass
says it doesn't. Match the legacy pass's preserved analyses.

[thakis]

Looks like d1fed7081d80 didn't update this as far as I understand. LG.

[fhahn]

In D89175#2345454, @thakis wrote:

Looks like d1fed7081d80 didn't update this as far as I understand. LG.

Yes, thanks for fixing.

llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp

PreservedAnalyses LowerMatrixIntrinsicsPass::run(Function &F,
   auto &ORE = AM.getResult<OptimizationRemarkEmitterAnalysis>(F);
   auto &AA = AM.getResult<AAManager>(F);
   auto &DT = AM.getResult<DominatorTreeAnalysis>(F);
   auto &LI = AM.getResult<LoopAnalysis>(F);
 
   LowerMatrixIntrinsics LMT(F, TTI, &AA, &DT, &LI, &ORE);
   if (LMT.Visit()) {
     PreservedAnalyses PA;
-    PA.preserveSet<CFGAnalyses>();
+    PA.preserve<LoopAnalysis>();
+    PA.preserve<DominatorTreeAnalysis>();
     return PA;
   }
   return PreservedAnalyses::all();
 }
 
 namespace {
 
 class LowerMatrixIntrinsicsLegacyPass : public FunctionPass {

llvm/test/Transforms/LowerMatrixIntrinsics/multiply-fused.ll

 ; RUN: opt -lower-matrix-intrinsics -fuse-matrix-use-loops=false -fuse-matrix-tile-size=2 -matrix-allow-contract -force-fuse-matrix -instcombine -verify-dom-info %s -S | FileCheck %s
+; RUN: opt -passes=lower-matrix-intrinsics,instcombine -fuse-matrix-use-loops=false -fuse-matrix-tile-size=2 -matrix-allow-contract -force-fuse-matrix -verify-dom-info %s -S | FileCheck %s
 
 ; REQUIRES: aarch64-registered-target
 
 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "aarch64-apple-ios"
 
 ; Test tiling without generating explicit loops.