[llvm] f68fdb8 - DAG: Fix losing flags on select when expanding select_cc (#93662)

[via llvm-commits]

Author: Matt Arsenault
Date: 2024-05-29T22:02:27+02:00
New Revision: f68fdb84e1809caf42dd22b94145f06974429091

URL: https://github.com/llvm/llvm-project/commit/f68fdb84e1809caf42dd22b94145f06974429091
DIFF: https://github.com/llvm/llvm-project/commit/f68fdb84e1809caf42dd22b94145f06974429091.diff

LOG: DAG: Fix losing flags on select when expanding select_cc (#93662)

This was only preserving the flags on the setcc, not the new select.
This was missing presumably due to getSelect not having a flags argument
until recently. Avoids regressions in a future commit.

Added: 
    

Modified: 
    llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index bfc2273c9425c..51f2cf9017f85 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -4159,7 +4159,8 @@ bool SelectionDAGLegalize::ExpandNode(SDNode *Node) {
              "expanded.");
       EVT CCVT = getSetCCResultType(CmpVT);
       SDValue Cond = DAG.getNode(ISD::SETCC, dl, CCVT, Tmp1, Tmp2, CC, Node->getFlags());
-      Results.push_back(DAG.getSelect(dl, VT, Cond, Tmp3, Tmp4));
+      Results.push_back(
+          DAG.getSelect(dl, VT, Cond, Tmp3, Tmp4, Node->getFlags()));
       break;
     }