public inbox for gcc-cvs@sourceware.org
help / color / mirror / Atom feed
* [gcc r13-2917] var-tracking: Add entry values up to max register mode
@ 2022-09-28 15:29 Stefan Schulze Frielinghaus
0 siblings, 0 replies; only message in thread
From: Stefan Schulze Frielinghaus @ 2022-09-28 15:29 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:5d7be27bf7ef63c770a591f69845c4245522cd76
commit r13-2917-g5d7be27bf7ef63c770a591f69845c4245522cd76
Author: Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
Date: Wed Sep 28 17:27:11 2022 +0200
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.
Diff:
---
gcc/var-tracking.cc | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/gcc/var-tracking.cc b/gcc/var-tracking.cc
index 235981d100f..9c40ec4fb8b 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))
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-09-28 15:29 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-09-28 15:29 [gcc r13-2917] var-tracking: Add entry values up to max register mode Stefan Schulze Frielinghaus
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).