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llvm-mirror/test/TableGen/Dag.td
Jakob Stoklund Olesen 83c1b42b62 Allow TableGen DAG arguments to be just a name.
DAG arguments can optionally be named:

  (dag node, node:$name)

With this change, the node is also optional:

  (dag node, node:$name, $name)

The missing node is treated as an UnsetInit, so the above is equivalent
to:

  (dag node, node:$name, ?:$name)

This syntax is useful in output patterns where we currently require the
types of variables to be repeated:

  def : Pat<(subc i32:$b, i32:$c), (SUBCCrr i32:$b, i32:$c)>;

This is preferable:

  def : Pat<(subc i32:$b, i32:$c), (SUBCCrr $b, $c)>;

llvm-svn: 177843
2013-03-24 19:36:51 +00:00

85 lines
1.7 KiB
TableGen

// RUN: llvm-tblgen %s | FileCheck %s
//===----------------------------------------------------------------------===//
// Substitution of an int.
def X1;
class C1<int N> {
dag d = (X1 N);
}
def VAL1 : C1<13>;
// CHECK: def VAL1 {
// CHECK-NEXT: dag d = (X1 13)
//===----------------------------------------------------------------------===//
// Substitution of a DAG.
def X2;
class yclass;
def Y2 : yclass;
class C2<yclass N> {
dag d = (X2 N);
dag e = (N X2);
}
def VAL2 : C2<Y2>;
// CHECK: def VAL2 {
// CHECK-NEXT: dag d = (X2 Y2)
// CHECK-NEXT: dag e = (Y2 X2)
//===----------------------------------------------------------------------===//
// Complex dag operator (F.TheOp).
class operator;
def somedef1 : operator;
def somedef2 : operator;
class foo<operator a> {
operator TheOp = a;
}
class bar<foo F, operator a> {
dag Dag1 = (somedef1 1);
dag Dag2 = (a 2);
dag Dag3 = (F.TheOp 2);
}
def foo1 : foo<somedef1>;
def foo2 : foo<somedef2>;
def VAL3 : bar<foo1, somedef1>;
// CHECK: def VAL3 { // bar
// CHECK-NEXT: dag Dag1 = (somedef1 1);
// CHECK-NEXT: dag Dag2 = (somedef1 2);
// CHECK-NEXT: dag Dag3 = (somedef1 2);
// CHECK-NEXT: NAME = ?
// CHECK-NEXT: }
def VAL4 : bar<foo2, somedef2>;
// CHECK: def VAL4 {
// CHECK-NEXT: dag Dag1 = (somedef1 1);
// CHECK-NEXT: dag Dag2 = (somedef2 2);
// CHECK-NEXT: dag Dag3 = (somedef2 2);
// CHECK-NEXT: NAME = ?
// CHECK-NEXT: }
def VAL5 : bar<foo2, somedef2> {
// Named operands.
let Dag1 = (somedef1 1:$name1);
// Name, no node.
let Dag2 = (somedef2 $name2, $name3);
}
// CHECK: def VAL5 {
// CHECK-NEXT: dag Dag1 = (somedef1 1:$name1);
// CHECK-NEXT: dag Dag2 = (somedef2 ?:$name2, ?:$name3);