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llvm-project/llvm/test/TableGen/foreach-eval.td

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[tablegen] Fixed few !foreach evaluation issues. * !foreach on lists didn't evaluate operands of the RHS operator. This made nested operators silently fail. * A typo in the code could result in a wrong value substituted for an operation which produced a false '!foreach requires an operator' error. * Keep recursion over the DAG within ForeachHelper. This simplifies things a bit as we no longer need to pass the Type around in order to prevent recursion. Differential Revision: https://reviews.llvm.org/D43083 llvm-svn: 324758
2018-02-10 02:37:55 +08:00
// RUN: llvm-tblgen %s | FileCheck %s
// XFAIL: vg_leak
// Tests evaluation of !foreach operator.
def d0;
def d1;
def d2;
def d3;
def d4;
class D<dag d> {
dag r1 = !foreach(tmp, d, !subst(d1, d0, !subst(d2, d0,
!subst(d3, d0,
!subst(d4, d0, tmp)))));
list<dag> dl = [d];
list<dag> r2 = !foreach(tmp2, dl,
!foreach(tmp, tmp2, !subst(d1, d0,
!subst(d2, d0,
!subst(d3, d0,
!subst(d4, d0, tmp))))));
}
// CHECK-LABEL: def d
// CHECK: dag r1 = (d0 d0, d0, d0, d0);
// CHECK: list<dag> r2 = [(d0 d0, d0, d0, d0)];
def d : D <(d0 d1, d2, d3, d4)>;
class I<list<int> i> {
list<int> r1 = !foreach(tmp, i, !add(3, !add(4, tmp)));
list<list<int>> li = [i];
list<list<int>> r2 = !foreach(tmp2, li,
!foreach(tmp, tmp2, !add(3, !add(4, tmp))));
}
// CHECK-LABEL: def i
// CHECK: list<int> r1 = [8, 9, 10];
// CHECK: list<list<int>> r2 = [{{[[]}}8, 9, 10]];
def i : I<[1,2,3]>;
class J0<list<dag> pattern> {
list<dag> Pattern = pattern;
}
class J1<dag pattern>
TableGen: Reimplement !foreach using the resolving mechanism Summary: This changes the syntax of !foreach so that the first "parameter" is a new syntactic variable: !foreach(x, lst, expr) will define the variable x within the scope of expr, and evaluation of the !foreach will substitute elements of the given list (or dag) for x in expr. Aside from leading to a nicer syntax, this allows more complex expressions where x is deeply nested, or even constant expressions in which x does not occur at all. !foreach is currently not actually used anywhere in trunk, but I plan to use it in the AMDGPU backend. If out-of-tree targets are using it, they can adjust to the new syntax very easily. Change-Id: Ib966694d8ab6542279d6bc358b6f4d767945a805 Reviewers: arsenm, craig.topper, tra, MartinO Subscribers: wdng, llvm-commits, tpr Differential Revision: https://reviews.llvm.org/D43651 llvm-svn: 326705
2018-03-05 23:21:04 +08:00
: J0<[!foreach(tmp, pattern, !subst(d1, d0,
!subst(d2, d0,
!subst(d3, d0,
!subst(d4, d0, tmp)))))]>;
[tablegen] Fixed few !foreach evaluation issues. * !foreach on lists didn't evaluate operands of the RHS operator. This made nested operators silently fail. * A typo in the code could result in a wrong value substituted for an operation which produced a false '!foreach requires an operator' error. * Keep recursion over the DAG within ForeachHelper. This simplifies things a bit as we no longer need to pass the Type around in order to prevent recursion. Differential Revision: https://reviews.llvm.org/D43083 llvm-svn: 324758
2018-02-10 02:37:55 +08:00
class J2<list<dag> patterns>
TableGen: Reimplement !foreach using the resolving mechanism Summary: This changes the syntax of !foreach so that the first "parameter" is a new syntactic variable: !foreach(x, lst, expr) will define the variable x within the scope of expr, and evaluation of the !foreach will substitute elements of the given list (or dag) for x in expr. Aside from leading to a nicer syntax, this allows more complex expressions where x is deeply nested, or even constant expressions in which x does not occur at all. !foreach is currently not actually used anywhere in trunk, but I plan to use it in the AMDGPU backend. If out-of-tree targets are using it, they can adjust to the new syntax very easily. Change-Id: Ib966694d8ab6542279d6bc358b6f4d767945a805 Reviewers: arsenm, craig.topper, tra, MartinO Subscribers: wdng, llvm-commits, tpr Differential Revision: https://reviews.llvm.org/D43651 llvm-svn: 326705
2018-03-05 23:21:04 +08:00
: J0<!foreach(t0, patterns,
!foreach(t1, t0, !subst(d1, d0,
!subst(d2, d0,
!subst(d3, d0,
!subst(d4, d0, t1))))))>;
[tablegen] Fixed few !foreach evaluation issues. * !foreach on lists didn't evaluate operands of the RHS operator. This made nested operators silently fail. * A typo in the code could result in a wrong value substituted for an operation which produced a false '!foreach requires an operator' error. * Keep recursion over the DAG within ForeachHelper. This simplifies things a bit as we no longer need to pass the Type around in order to prevent recursion. Differential Revision: https://reviews.llvm.org/D43083 llvm-svn: 324758
2018-02-10 02:37:55 +08:00
// CHECK-LABEL: def j1
// CHECK: list<dag> Pattern = [(d0 d0:$dst, (d0 d0:$src1))];
def j1 : J1< (d1 d2:$dst, (d3 d4:$src1))>;
// CHECK-LABEL: def j2
// CHECK: list<dag> Pattern = [(d0 d0:$dst, (d0 d0:$src1))];
def j2 : J2< [(d1 d2:$dst, (d3 d4:$src1))]>;