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Store names of captured variables in optimized_mir

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- Closures in external crates may get compiled in because of
  monomorphization. We should store names of captured variables
  in `optimized_mir`, so that they are written into the metadata
  file and we can use them to generate debuginfo.

- If there are breakpoints inside closures, the names of captured
  variables stored in `optimized_mir` can be used to print them.
  Now the name is more precise when disjoint fields are captured.
This commit is contained in:
lrh2000 2021-05-15 19:01:13 +08:00
parent 29856acffe
commit cda90f5541
7 changed files with 132 additions and 66 deletions
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8
src/test/debuginfo/generator-objects.rs
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@ -11,16 +11,16 @@
// gdb-command:run
// gdb-command:print b
// gdb-check:$1 = generator_objects::main::{generator#0}::Unresumed{_captured_ref__a: 0x[...]}
// gdb-check:$1 = generator_objects::main::{generator#0}::Unresumed{_ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$2 = generator_objects::main::{generator#0}::Suspend0{c: 6, d: 7, _captured_ref__a: 0x[...]}
// gdb-check:$2 = generator_objects::main::{generator#0}::Suspend0{c: 6, d: 7, _ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$3 = generator_objects::main::{generator#0}::Suspend1{c: 7, d: 8, _captured_ref__a: 0x[...]}
// gdb-check:$3 = generator_objects::main::{generator#0}::Suspend1{c: 7, d: 8, _ref__a: 0x[...]}
// gdb-command:continue
// gdb-command:print b
// gdb-check:$4 = generator_objects::main::{generator#0}::Returned{_captured_ref__a: 0x[...]}
// gdb-check:$4 = generator_objects::main::{generator#0}::Returned{_ref__a: 0x[...]}
// === LLDB TESTS ==================================================================================