[llvm] [DAG] Teach SelectionDAGBuilder to read parameter alignment of compressstore/expandload. (PR #83763)

[Yeting Kuo via llvm-commits]

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@@ -4721,24 +4721,24 @@ void SelectionDAGBuilder::visitMaskedStore(const CallInst &I,
   SDLoc sdl = getCurSDLoc();
 
   auto getMaskedStoreOps = [&](Value *&Ptr, Value *&Mask, Value *&Src0,
-                               MaybeAlign &Alignment) {
+                               Align &Alignment) {
     // llvm.masked.store.*(Src0, Ptr, alignment, Mask)
     Src0 = I.getArgOperand(0);
     Ptr = I.getArgOperand(1);
-    Alignment = cast<ConstantInt>(I.getArgOperand(2))->getMaybeAlignValue();
+    Alignment = cast<ConstantInt>(I.getArgOperand(2))->getAlignValue();
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yetingk wrote:

The LangRef tells that the alignment value of masked.load/store should be power of 2, so I think we could ignore the case.

https://github.com/llvm/llvm-project/pull/83763