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From: "syq at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/104914] [MIPS] wrong comparison with scrabbled
 int value
Date: Wed, 12 Jul 2023 02:23:39 +0000
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X-Bugzilla-Component: rtl-optimization
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104914

--- Comment #13 from YunQiang Su <syq at gcc dot gnu.org> ---
This tiny patch works will this small test case by replace with dins to ins.

I have no idea whether it will have any side effects.

Any idea?

diff --git a/gcc/expmed.cc b/gcc/expmed.cc
index fbd4ce2d42f..37f90912122 100644
--- a/gcc/expmed.cc
+++ b/gcc/expmed.cc
@@ -849,7 +849,7 @@ store_bit_field_1 (rtx str_rtx, poly_uint64 bitsize,
poly_uint64 bitnum,
      if we aren't.  This must come after the entire register case above,
      since that case is valid for any mode.  The following cases are only
      valid for integral modes.  */
-  opt_scalar_int_mode op0_mode =3D int_mode_for_mode (GET_MODE (op0));
+  opt_scalar_int_mode op0_mode =3D int_mode_for_mode (GET_MODE (str_rtx));
   scalar_int_mode imode;
   if (!op0_mode.exists (&imode) || imode !=3D GET_MODE (op0))
     {=