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| author | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2022-09-28 17:27:11 +0200 |
|---|---|---|
| committer | Stefan Schulze Frielinghaus <stefansf@linux.ibm.com> | 2022-09-28 17:27:11 +0200 |
| commit | 5d7be27bf7ef63c770a591f69845c4245522cd76 (patch) | |
| tree | 90c1ebf56a37ab045819ed84f09b2f36682324ad /gcc | |
| parent | d0b00b63a39108311f2e6f9cbe9072579f57df7c (diff) | |
| download | gcc-5d7be27bf7ef63c770a591f69845c4245522cd76.zip gcc-5d7be27bf7ef63c770a591f69845c4245522cd76.tar.gz gcc-5d7be27bf7ef63c770a591f69845c4245522cd76.tar.bz2 | |
var-tracking: Add entry values up to max register mode
For parameter of type integer which do not consume a whole register
(modulo sign/zero extension) this patch adds entry values up to maximal
register mode.
gcc/ChangeLog:
* var-tracking.cc (vt_add_function_parameter): Add entry values
up to maximal register mode.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/var-tracking.cc | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/var-tracking.cc b/gcc/var-tracking.cc index 235981d..9c40ec4 100644 --- a/gcc/var-tracking.cc +++ b/gcc/var-tracking.cc @@ -9906,6 +9906,23 @@ vt_add_function_parameter (tree parm) VAR_INIT_STATUS_INITIALIZED, NULL, INSERT); } } + + if (GET_MODE_CLASS (mode) == MODE_INT) + { + machine_mode wider_mode_iter; + FOR_EACH_WIDER_MODE (wider_mode_iter, mode) + { + if (!HWI_COMPUTABLE_MODE_P (wider_mode_iter)) + break; + rtx wider_reg + = gen_rtx_REG (wider_mode_iter, REGNO (incoming)); + cselib_val *wider_val + = cselib_lookup_from_insn (wider_reg, wider_mode_iter, 1, + VOIDmode, get_insns ()); + preserve_value (wider_val); + record_entry_value (wider_val, wider_reg); + } + } } } else if (GET_CODE (incoming) == PARALLEL && !dv_onepart_p (dv)) |