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Sungkeun Cho b004a7f510 [liveness] Handles live variables in catch block ... Summary: This diff handles live variables in catch blocks. To do that, this diff adds another metadata, `CatchEntry`. Domain change: The domain is changed to ``` (normal:variables) x (exn:try_id->variables) ``` `exn` is a map from try-catch-id to a set of live variables that are live at the corresponding entry of catch blocks. Semantics change: It is a backward analysis. * on `CatchEntry`: It updates `exn` with `try_id` and current `normal`. * on `Call`: As of now, we assume all function calls can raise an exception. Therefore, it copies all live variables in `exn` to `normal`. * on `TryEntry`: It removes corresponding `try_id` from `exn`. Reviewed By: jvillard Differential Revision: D26952755 fbshipit-source-id: 1da854a89		4 years ago
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attributes	[clang] migrate to llvm/clang11	4 years ago
conditional	[clang] migrate to llvm/clang11	4 years ago
constructors	[clang] migrate to llvm/clang11	4 years ago
exceptions	[liveness] Handles live variables in catch block	4 years ago
lambda	[clang] migrate to llvm/clang11	4 years ago
methods	[clang] migrate to llvm/clang11	4 years ago
namespace	[clang] migrate to llvm/clang11	4 years ago
nestedoperators	[clang] change the way we wire up return statements	4 years ago
npe	[clang] change the way we wire up return statements	4 years ago
reference	[clang] migrate to llvm/clang11	4 years ago
templates	[clang] migrate to llvm/clang11	4 years ago
types	[clang] migrate to llvm/clang11	4 years ago