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44c4846682
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
63 lines
2.0 KiB
TableGen
63 lines
2.0 KiB
TableGen
// RUN: llvm-tblgen %s | FileCheck %s
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// XFAIL: vg_leak
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// Tests evaluation of !foreach operator.
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def d0;
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def d1;
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def d2;
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def d3;
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def d4;
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class D<dag d> {
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dag r1 = !foreach(tmp, d, !subst(d1, d0, !subst(d2, d0,
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!subst(d3, d0,
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!subst(d4, d0, tmp)))));
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list<dag> dl = [d];
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list<dag> r2 = !foreach(tmp2, dl,
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!foreach(tmp, tmp2, !subst(d1, d0,
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!subst(d2, d0,
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!subst(d3, d0,
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!subst(d4, d0, tmp))))));
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}
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// CHECK-LABEL: def d
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// CHECK: dag r1 = (d0 d0, d0, d0, d0);
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// CHECK: list<dag> r2 = [(d0 d0, d0, d0, d0)];
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def d : D <(d0 d1, d2, d3, d4)>;
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class I<list<int> i> {
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list<int> r1 = !foreach(tmp, i, !add(3, !add(4, tmp)));
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list<list<int>> li = [i];
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list<list<int>> r2 = !foreach(tmp2, li,
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!foreach(tmp, tmp2, !add(3, !add(4, tmp))));
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}
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// CHECK-LABEL: def i
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// CHECK: list<int> r1 = [8, 9, 10];
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// CHECK: list<list<int>> r2 = [{{[[]}}8, 9, 10]];
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def i : I<[1,2,3]>;
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class J0<list<dag> pattern> {
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list<dag> Pattern = pattern;
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}
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class J1<dag pattern>
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: J0<[!foreach(tmp, pattern, !subst(d1, d0,
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!subst(d2, d0,
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!subst(d3, d0,
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!subst(d4, d0, tmp)))))]>;
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class J2<list<dag> patterns>
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: J0<!foreach(t0, patterns,
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!foreach(t1, t0, !subst(d1, d0,
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!subst(d2, d0,
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!subst(d3, d0,
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!subst(d4, d0, t1))))))>;
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// CHECK-LABEL: def j1
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// CHECK: list<dag> Pattern = [(d0 d0:$dst, (d0 d0:$src1))];
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def j1 : J1< (d1 d2:$dst, (d3 d4:$src1))>;
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// CHECK-LABEL: def j2
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// CHECK: list<dag> Pattern = [(d0 d0:$dst, (d0 d0:$src1))];
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def j2 : J2< [(d1 d2:$dst, (d3 d4:$src1))]>;
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