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| author | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-09-27 12:31:07 +0200 |
|---|---|---|
| committer | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2022-10-29 10:03:30 +0200 |
| commit | a1dabb4792446538cce24eb87bcd3ccb3c09f18b (patch) | |
| tree | b74523469addfab9db6afc5ced3564ce267da4d7 /driver/Frontend.ml | |
| parent | dfc6b66ec21e148d29b2a6e8b5d77873a0a47511 (diff) | |
| download | compcert-a1dabb4792446538cce24eb87bcd3ccb3c09f18b.tar.gz compcert-a1dabb4792446538cce24eb87bcd3ccb3c09f18b.zip | |
Handle unstructured 'switch' statements such as Duff's device
- New elaboration pass: SwitchNorm
- recognizes structured 'switch' statements and puts them in a
normalized form;
- if selected, transforms unstructured 'switch' statements into a
structured switch with goto actions + the original switch body
with appropriate labels and gotos.
- C2C treatment of 'switch' statements is simplified accordingly.
- New language support option `-funstructured-switch`.
- Some tests were added (test/regression/switch3.c).
Diffstat (limited to 'driver/Frontend.ml')
| -rw-r--r-- | driver/Frontend.ml | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/driver/Frontend.ml b/driver/Frontend.ml index 5132f730..c8131662 100644 --- a/driver/Frontend.ml +++ b/driver/Frontend.ml @@ -80,11 +80,13 @@ let parse_c_file sourcename ifile = Sections.initialize(); CPragmas.reset(); (* Parsing and production of a simplified C AST *) - let ast = Parse.preprocessed_file - ~unblock: true - ~struct_passing: !option_fstruct_passing - ~packed_structs: !option_fpacked_structs - sourcename ifile in + let ast = + Parse.preprocessed_file + ~unblock: true + ~switch_norm: (if !option_funstructured_switch then `Full else `Partial) + ~struct_passing: !option_fstruct_passing + ~packed_structs: !option_fpacked_structs + sourcename ifile in (* Save C AST if requested *) Cprint.print_if ast; (* Conversion to Csyntax *) |