Work around an assertion that rust is tripping

alexcrichton · luqmana · commit 8841dcef357e · 2013-12-27T15:14:36.000-05:00
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp
@@ -1106,6 +1106,8 @@ foldMemoryOperand(ArrayRef<std::pair<MachineInstr*, unsigned> > Ops,
     }
     if (RI.Defines)
       continue;
+    if (!MO->isDead())
+      continue;
     // FoldMI does not define this physreg. Remove the LI segment.
     assert(MO->isDead() && "Cannot fold physreg def");
     for (MCRegUnitIterator Units(Reg, &TRI); Units.isValid(); ++Units) {

Original file line number	Diff line number	Diff line change
`@@ -1106,6 +1106,8 @@ foldMemoryOperand(ArrayRef<std::pair<MachineInstr*, unsigned> > Ops,`
`1106`	`1106`	`}`
`1107`	`1107`	`if (RI.Defines)`
`1108`	`1108`	`continue;`
	`1109`	`+ if (!MO->isDead())`
	`1110`	`+ continue;`
`1109`	`1111`	`// FoldMI does not define this physreg. Remove the LI segment.`
`1110`	`1112`	`assert(MO->isDead() && "Cannot fold physreg def");`
`1111`	`1113`	`for (MCRegUnitIterator Units(Reg, &TRI); Units.isValid(); ++Units) {`