DAG: Set MachinePointerInfo for stack when expanding divrem libcall

[arsenm]

No description provided.

[arsenm]

• DAG: Set MachinePointerInfo for stack when expanding divrem libcall #170537 👈 (View in Graphite)
• main

This stack of pull requests is managed by Graphite. Learn more about stacking.

[llvmbot]

@llvm/pr-subscribers-llvm-selectiondag

Author: Matt Arsenault (arsenm)

Changes

---

Full diff: https://github.com/llvm/llvm-project/pull/170537.diff

1 Files Affected:

• (modified) llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (+5-2)

diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index 8336e1d1f4134..ff5132d44b898 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2407,8 +2407,11 @@ SelectionDAGLegalize::ExpandDivRemLibCall(SDNode *Node,
   std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
 
   // Remainder is loaded back from the stack frame.
-  SDValue Rem =
-      DAG.getLoad(RetVT, dl, CallInfo.second, FIPtr, MachinePointerInfo());
+  int FI = cast<FrameIndexSDNode>(FIPtr)->getIndex();
+  MachinePointerInfo PtrInfo =
+      MachinePointerInfo::getFixedStack(DAG.getMachineFunction(), FI);
+
+  SDValue Rem = DAG.getLoad(RetVT, dl, CallInfo.second, FIPtr, PtrInfo);
   Results.push_back(CallInfo.first);
   Results.push_back(Rem);
 }