[globalisel][tablegen] Generalize pointer-type inference by introducing ptypeN. NFC
ptypeN is functionally the same as typeN except that it informs the
SelectionDAG importer that an operand should be treated as a pointer even
if it was written as iN. This is important for patterns that use iN instead
of iPTR to represent pointers. E.g.:
(set GPR64:$dst, (load GPR64:$addr))
Previously, this was handled as a hardcoded special case for the appropriate
operands to G_LOAD and G_STORE.
llvm-svn: 318574
diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
index 8fa3050..44ee16f 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -430,6 +430,17 @@
return Res;
}
+bool CodeGenInstruction::isOperandAPointer(unsigned i) const {
+ if (DagInit *ConstraintList = TheDef->getValueAsDag("InOperandList")) {
+ if (i < ConstraintList->getNumArgs()) {
+ if (DefInit *Constraint = dyn_cast<DefInit>(ConstraintList->getArg(i))) {
+ return Constraint->getDef()->isSubClassOf("TypedOperand") &&
+ Constraint->getDef()->getValueAsBit("IsPointer");
+ }
+ }
+ }
+ return false;
+}
//===----------------------------------------------------------------------===//
/// CodeGenInstAlias Implementation