[llvm] [InstCombine] Fold align assume into load's !align metadata if possible. (PR #123247)

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git-clang-format --diff d49a2d2bc9c65c787bfa04ac8ece614da48a8cd5 192a04992bf7c52370e4e912f80c19b29a43edeb --extensions cpp,h -- llvm/include/llvm/Transforms/InstCombine/InstCombine.h llvm/lib/Passes/PassBuilder.cpp llvm/lib/Passes/PassBuilderPipelines.cpp llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp llvm/lib/Transforms/InstCombine/InstCombineInternal.h llvm/lib/Transforms/InstCombine/InstructionCombining.cpp llvm/lib/Transforms/Scalar/EarlyCSE.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Passes/PassBuilderPipelines.cpp b/llvm/lib/Passes/PassBuilderPipelines.cpp
index 9c17c938a6..1b7e37dcbd 100644
--- a/llvm/lib/Passes/PassBuilderPipelines.cpp
+++ b/llvm/lib/Passes/PassBuilderPipelines.cpp
@@ -1318,8 +1318,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
     // dead (or speculatable) control flows or more combining opportunities.
     ExtraPasses.addPass(EarlyCSEPass());
     ExtraPasses.addPass(CorrelatedValuePropagationPass());
-    ExtraPasses.addPass(
-        InstCombinePass(InstCombineOptions()));
+    ExtraPasses.addPass(InstCombinePass(InstCombineOptions()));
     LoopPassManager LPM;
     LPM.addPass(LICMPass(PTO.LicmMssaOptCap, PTO.LicmMssaNoAccForPromotionCap,
                          /*AllowSpeculation=*/true));
@@ -1330,8 +1329,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
                                         /*UseBlockFrequencyInfo=*/true));
     ExtraPasses.addPass(
         SimplifyCFGPass(SimplifyCFGOptions().convertSwitchRangeToICmp(true)));
-    ExtraPasses.addPass(
-        InstCombinePass());
+    ExtraPasses.addPass(InstCombinePass());
     FPM.addPass(std::move(ExtraPasses));
   }
 
@@ -1354,8 +1352,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
 
   if (IsFullLTO) {
     FPM.addPass(SCCPPass());
-    FPM.addPass(
-        InstCombinePass(InstCombineOptions()));
+    FPM.addPass(InstCombinePass(InstCombineOptions()));
     FPM.addPass(BDCEPass());
   }
 
@@ -1370,8 +1367,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
   FPM.addPass(VectorCombinePass());
 
   if (!IsFullLTO) {
-    FPM.addPass(
-        InstCombinePass(InstCombineOptions()));
+    FPM.addPass(InstCombinePass(InstCombineOptions()));
     // Unroll small loops to hide loop backedge latency and saturate any
     // parallel execution resources of an out-of-order processor. We also then
     // need to clean up redundancies and loop invariant code.
@@ -1397,8 +1393,7 @@ void PassBuilder::addVectorPasses(OptimizationLevel Level,
   }
 
   FPM.addPass(InferAlignmentPass());
-  FPM.addPass(
-      InstCombinePass(InstCombineOptions()));
+  FPM.addPass(InstCombinePass(InstCombineOptions()));
 
   // This is needed for two reasons:
   //   1. It works around problems that instcombine introduces, such as sinking
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
index 856b9242c7..c07e46c36a 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp
@@ -3239,8 +3239,8 @@ Instruction *InstCombinerImpl::visitCallInst(CallInst &CI) {
             LLVMContext::MD_align,
             MDNode::get(II->getContext(), ValueAsMetadata::getConstant(
                                               Builder.getInt64(RK.ArgValue))));
-          MDNode *MD = MDNode::get(II->getContext(), {});
-          LI->setMetadata(LLVMContext::MD_noundef, MD);
+        MDNode *MD = MDNode::get(II->getContext(), {});
+        LI->setMetadata(LLVMContext::MD_noundef, MD);
 
         auto *New = CallBase::removeOperandBundle(II, OBU.getTagID());
         return New;

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https://github.com/llvm/llvm-project/pull/123247