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

csstormq · web-flow · commit d14aa0cd46c6 · 2025-07-10T21:35:44.000+08:00
diff --git 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);
   }
 

Original file line number	Diff line number	Diff line change
`@@ -1657,7 +1657,7 @@ void HoistSpillHelper::hoistAllSpills() {`
`1657`	`1657`	`for (unsigned i = 0, e = MRI.getNumVirtRegs(); i != e; ++i) {`
`1658`	`1658`	`Register Reg = Register::index2VirtReg(i);`
`1659`	`1659`	`Register Original = VRM.getPreSplitReg(Reg);`
`1660`		`- if (!MRI.def_empty(Reg))`
	`1660`	`+ if (!MRI.def_empty(Reg) && Original.isValid())`
`1661`	`1661`	`Virt2SiblingsMap[Original].insert(Reg);`
`1662`	`1662`	`}`
`1663`	`1663`