[llvm] d14aa0c - [InlineSpiller] Drop unused elements in Virt2SiblingsMap. NFC (#147866)

[via llvm-commits]

Author: csstormq
Date: 2025-07-10T21:35:44+08:00
New Revision: d14aa0cd46c652e417b5a777fe5a05c2a4df8364

URL: https://github.com/llvm/llvm-project/commit/d14aa0cd46c652e417b5a777fe5a05c2a4df8364
DIFF: https://github.com/llvm/llvm-project/commit/d14aa0cd46c652e417b5a777fe5a05c2a4df8364.diff

LOG: [InlineSpiller] Drop unused elements in Virt2SiblingsMap. NFC (#147866)

Added: 
    

Modified: 
    llvm/lib/CodeGen/InlineSpiller.cpp

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/InlineSpiller.cpp b/llvm/lib/CodeGen/InlineSpiller.cpp
index ee08dc42dce57..98c56f739ad4e 100644
--- a/llvm/lib/CodeGen/InlineSpiller.cpp
+++ b/llvm/lib/CodeGen/InlineSpiller.cpp
@@ -1657,7 +1657,7 @@ void HoistSpillHelper::hoistAllSpills() {
   for (unsigned i = 0, e = MRI.getNumVirtRegs(); i != e; ++i) {
     Register Reg = Register::index2VirtReg(i);
     Register Original = VRM.getPreSplitReg(Reg);
-    if (!MRI.def_empty(Reg))
+    if (!MRI.def_empty(Reg) && Original.isValid())
       Virt2SiblingsMap[Original].insert(Reg);
   }