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| author | Xavier Leroy <xavier.leroy@college-de-france.fr> | 2020-02-18 16:57:17 +0100 |
|---|---|---|
| committer | Xavier Leroy <xavierleroy@users.noreply.github.com> | 2020-02-21 13:29:39 +0100 |
| commit | be0b1872bf2ad36df9b0c7a0ffa63b9e77fa769b (patch) | |
| tree | 0d54cce547d12567d7e9e9f2c4d650e5a1b94b39 /x86/Asmexpand.ml | |
| parent | a9eaf4897c825093aba2137ff76e56bfbf1e72d5 (diff) | |
| download | compcert-be0b1872bf2ad36df9b0c7a0ffa63b9e77fa769b.tar.gz compcert-be0b1872bf2ad36df9b0c7a0ffa63b9e77fa769b.zip | |
Refine the type of function results in AST.signature
Before it was "option typ". Now it is a proper inductive type
that can also express small integer types (8/16-bit unsigned/signed integers).
One benefit is that external functions get more precise types that
control better their return values. As a consequence,
the CompCert C type preservation property now holds unconditionally,
without extra typing hypotheses on external functions.
Diffstat (limited to 'x86/Asmexpand.ml')
| -rw-r--r-- | x86/Asmexpand.ml | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/x86/Asmexpand.ml b/x86/Asmexpand.ml index 16426ce3..c82d406e 100644 --- a/x86/Asmexpand.ml +++ b/x86/Asmexpand.ml @@ -506,7 +506,7 @@ let expand_instruction instr = (* Save the registers *) emit (Pleaq (R10, linear_addr RSP (Z.of_uint save_regs))); emit (Pcall_s (intern_string "__compcert_va_saveregs", - {sig_args = []; sig_res = None; sig_cc = cc_default})) + {sig_args = []; sig_res = Tvoid; sig_cc = cc_default})) end; (* Stack chaining *) let fullsz = sz + 8 in |