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* [gcc r13-4434] rs6000: Corrects comments which are added by r13-4423
@ 2022-12-01 6:10 HaoChen Gui
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From: HaoChen Gui @ 2022-12-01 6:10 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:125f294e851b2282ee3bc88a6e5957cc90f013bd
commit r13-4434-g125f294e851b2282ee3bc88a6e5957cc90f013bd
Author: Haochen Gui <guihaoc@gcc.gnu.org>
Date: Thu Dec 1 13:55:46 2022 +0800
rs6000: Corrects comments which are added by r13-4423
gcc/
* config/rs6000/rs6000-call.cc (swap_endian_selector_for_mode):
Corrects comments of this function and make them clear.
Diff:
---
gcc/config/rs6000/rs6000-call.cc | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gcc/config/rs6000/rs6000-call.cc b/gcc/config/rs6000/rs6000-call.cc
index c2a4e4f4e27..59c51fa3579 100644
--- a/gcc/config/rs6000/rs6000-call.cc
+++ b/gcc/config/rs6000/rs6000-call.cc
@@ -2802,8 +2802,10 @@ rs6000_gimplify_va_arg (tree valist, tree type, gimple_seq *pre_p,
return build_va_arg_indirect_ref (addr);
}
-/* The selector (perm) is expected to be used with vperm direct as the
- function generates reversed perm for little endian with this patch. */
+/* Return the permutation index for the swapping on the given vector mode.
+ Note that the permutation index is correspondingly generated by endianness,
+ it should be used by direct vector permutation. */
+
rtx
swap_endian_selector_for_mode (machine_mode mode)
{
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