Add legacy debuginfo tests

The enum debuginfo patch includes a legacy mode that is used when
building against LLVM 5 and LLVM 6.  The main enum debuginfo tests
have been updated to rely on the new approach and a new-enough gdb.
This patch makes a copy of these tests so that the fallback mode will
continue to be tested.

Note that nil-enum.rs is not copied; it seemed not to provide enough
value to bother.

A new header directive is added, "ignore-llvm-version".  I will send a
patch to update the rustc documentation once this lands.

1 files changed, 94 insertions, 0 deletions

diff --git a/src/test/debuginfo/borrowed-enum-legacy.rs b/src/test/debuginfo/borrowed-enum-legacy.rs
new file mode 100644
index 00000000000..a04f7d6dd8a
--- /dev/null
+++ b/src/test/debuginfo/borrowed-enum-legacy.rs
@@ -0,0 +1,94 @@
+// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// ignore-tidy-linelength
+// min-lldb-version: 310
+
+// As long as LLVM 5 and LLVM 6 are supported, we want to test the
+// enum debuginfo fallback mode.  Once those are desupported, this
+// test can be removed, as there is another (non-"legacy") test that
+// tests the new mode.
+// ignore-llvm-version: 7.0 - 9.9.9
+// ignore-gdb-version: 7.11.90 - 7.12.9
+// ignore-gdb-version: 8.2 - 9.9
+
+// compile-flags:-g
+
+// === GDB TESTS ===================================================================================
+
+// gdb-command:run
+
+// gdb-command:print *the_a_ref
+// gdbg-check:$1 = {{RUST$ENUM$DISR = TheA, x = 0, y = 8970181431921507452}, {RUST$ENUM$DISR = TheA, [...]}}
+// gdbr-check:$1 = borrowed_enum_legacy::ABC::TheA{x: 0, y: 8970181431921507452}
+
+// gdb-command:print *the_b_ref
+// gdbg-check:$2 = {{RUST$ENUM$DISR = TheB, [...]}, {RUST$ENUM$DISR = TheB, __0 = 0, __1 = 286331153, __2 = 286331153}}
+// gdbr-check:$2 = borrowed_enum_legacy::ABC::TheB(0, 286331153, 286331153)
+
+// gdb-command:print *univariant_ref
+// gdbg-check:$3 = {{__0 = 4820353753753434}}
+// gdbr-check:$3 = borrowed_enum_legacy::Univariant::TheOnlyCase(4820353753753434)
+
+
+// === LLDB TESTS ==================================================================================
+
+// lldb-command:run
+
+// lldb-command:print *the_a_ref
+// lldbg-check:[...]$0 = TheA { x: 0, y: 8970181431921507452 }
+// lldbr-check:(borrowed_enum_legacy::ABC::TheA) *the_a_ref = TheA { borrowed_enum_legacy::ABC::TheA: 0, borrowed_enum_legacy::ABC::TheB: 8970181431921507452 }
+// lldb-command:print *the_b_ref
+// lldbg-check:[...]$1 = TheB(0, 286331153, 286331153)
+// lldbr-check:(borrowed_enum_legacy::ABC::TheB) *the_b_ref = { = 0 = 286331153 = 286331153 }
+// lldb-command:print *univariant_ref
+// lldbg-check:[...]$2 = TheOnlyCase(4820353753753434)
+// lldbr-check:(borrowed_enum_legacy::Univariant) *univariant_ref = { borrowed_enum_legacy::TheOnlyCase = { = 4820353753753434 } }
+
+#![allow(unused_variables)]
+#![feature(omit_gdb_pretty_printer_section)]
+#![omit_gdb_pretty_printer_section]
+
+// The first element is to ensure proper alignment, irrespective of the machines word size. Since
+// the size of the discriminant value is machine dependent, this has be taken into account when
+// datatype layout should be predictable as in this case.
+enum ABC {
+    TheA { x: i64, y: i64 },
+    TheB (i64, i32, i32),
+}
+
+// This is a special case since it does not have the implicit discriminant field.
+enum Univariant {
+    TheOnlyCase(i64)
+}
+
+fn main() {
+
+    // 0b0111110001111100011111000111110001111100011111000111110001111100 = 8970181431921507452
+    // 0b01111100011111000111110001111100 = 2088533116
+    // 0b0111110001111100 = 31868
+    // 0b01111100 = 124
+    let the_a = ABC::TheA { x: 0, y: 8970181431921507452 };
+    let the_a_ref: &ABC = &the_a;
+
+    // 0b0001000100010001000100010001000100010001000100010001000100010001 = 1229782938247303441
+    // 0b00010001000100010001000100010001 = 286331153
+    // 0b0001000100010001 = 4369
+    // 0b00010001 = 17
+    let the_b = ABC::TheB (0, 286331153, 286331153);
+    let the_b_ref: &ABC = &the_b;
+
+    let univariant = Univariant::TheOnlyCase(4820353753753434);
+    let univariant_ref: &Univariant = &univariant;
+
+    zzz(); // #break
+}
+
+fn zzz() {()}