These tests were disabled by accident after D107640. Actually, REQUIRES lines don't support `x86_64` and so these tests stopped running on all targets.
`native && target-x86_64` should be the correct term to express "x86_64 host targeting native arch".
-; REQUIRES: x86_64
+; REQUIRES: native && target-x86_64
; RUN: lli --jit-kind=orc-lazy --per-module-lazy --jit-linker=rtdyld \
; RUN: --generate=__dump_jit_debug_descriptor %s | FileCheck %s
-; REQUIRES: x86_64
+; REQUIRES: native && target-x86_64
; In-memory debug-object contains some basic DWARF
;