TableGen: Allow setting SDNodeProperties on intrinsics
Allows preserving MachineMemOperands on intrinsics
through selection. For reasons I don't understand, this
is a static property of the pattern and the selector
deliberately goes out of its way to drop if not present.
Intrinsics already inherit from SDPatternOperator allowing
them to be used directly in instruction patterns. SDPatternOperator
has a list of SDNodeProperty, but you currently can't set them on
the intrinsic. Without SDNPMemOperand, when the node is selected
any memory operands are always dropped. Allowing setting this
on the intrinsics avoids needing to introduce another equivalent
target node just to have SDNPMemOperand set.
llvm-svn: 321212
diff --git a/llvm/utils/TableGen/CodeGenIntrinsics.h b/llvm/utils/TableGen/CodeGenIntrinsics.h
index 2437412..9130503 100644
--- a/llvm/utils/TableGen/CodeGenIntrinsics.h
+++ b/llvm/utils/TableGen/CodeGenIntrinsics.h
@@ -14,6 +14,7 @@
#ifndef LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
#define LLVM_UTILS_TABLEGEN_CODEGENINTRINSICS_H
+#include "SDNodeProperties.h"
#include "llvm/CodeGen/MachineValueType.h"
#include <string>
#include <vector>
@@ -104,6 +105,9 @@
};
ModRefBehavior ModRef;
+ /// SDPatternOperator Properties applied to the intrinsic.
+ unsigned Properties;
+
/// This is set to true if the intrinsic is overloaded by its argument
/// types.
bool isOverloaded;
@@ -133,6 +137,10 @@
enum ArgAttribute { NoCapture, Returned, ReadOnly, WriteOnly, ReadNone };
std::vector<std::pair<unsigned, ArgAttribute>> ArgumentAttributes;
+ bool hasProperty(enum SDNP Prop) const {
+ return Properties & (1 << Prop);
+ }
+
CodeGenIntrinsic(Record *R);
};