[llvm] [X86][SimplifyCFG][CodeGen] Support hoisting load/store with conditional faulting (PR #95515)

[Shengchen Kan via llvm-commits]

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@@ -4783,9 +4783,18 @@ void SelectionDAGBuilder::visitMaskedStore(const CallInst &I,
   MachineMemOperand *MMO = DAG.getMachineFunction().getMachineMemOperand(
       MachinePointerInfo(PtrOperand), MMOFlags,
       LocationSize::beforeOrAfterPointer(), Alignment, I.getAAMetadata());
+
+  const auto &TLI = DAG.getTargetLoweringInfo();
+  const auto &TTI =
+      TLI.getTargetMachine().getTargetTransformInfo(*I.getFunction());
   SDValue StoreNode =
-      DAG.getMaskedStore(getMemoryRoot(), sdl, Src0, Ptr, Offset, Mask, VT, MMO,
-                         ISD::UNINDEXED, false /* Truncating */, IsCompressing);
+      (!IsCompressing && TTI.hasConditionalFaultingLoadStoreForType(
+                             I.getArgOperand(0)->getType()->getScalarType()))
+          ? TLI.visitMaskedStoreForCondFaulting(DAG, sdl, getMemoryRoot(), MMO,
+                                                Ptr, Src0, Mask)
+          : DAG.getMaskedStore(getMemoryRoot(), sdl, Src0, Ptr, Offset, Mask,
+                               VT, MMO, ISD::UNINDEXED, false /* Truncating */,
----------------
KanRobert wrote:

Done.

https://github.com/llvm/llvm-project/pull/95515