Module Name: src
Committed By: kalvisd
Date: Mon Dec 18 21:11:43 UTC 2023
Modified Files:
src/external/gpl3/gcc.old/dist/gcc: reload1.c
Log Message:
gcc.old: vax: gcc/reload1.c: PR port-vax/57646
Where an output register might be reloaded, and it is a memory
reference, and the address is auto-incremented, any previously
reloaded copy of the address must be invalidated.
XXXKD: Hidden within ``#ifdef NB_FIX_VAX_BACKEND'' and enabled
only for vax at the moment.
To generate a diff of this commit:
cvs rdiff -u -r1.11 -r1.12 src/external/gpl3/gcc.old/dist/gcc/reload1.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/gpl3/gcc.old/dist/gcc/reload1.c
diff -u src/external/gpl3/gcc.old/dist/gcc/reload1.c:1.11 src/external/gpl3/gcc.old/dist/gcc/reload1.c:1.12
--- src/external/gpl3/gcc.old/dist/gcc/reload1.c:1.11 Mon Feb 20 02:11:07 2023
+++ src/external/gpl3/gcc.old/dist/gcc/reload1.c Mon Dec 18 21:11:42 2023
@@ -8377,6 +8377,44 @@ emit_reload_insns (class insn_chain *cha
reg_last_reload_reg[out_regno + k] = 0;
}
}
+
+#ifdef NB_FIX_VAX_BACKEND
+#if AUTO_INC_DEC
+ /* Where an output register might be reloaded, and it is a
+ memory reference, and the address is auto-incremented, any
+ previously reloaded copy of the address must be
+ invalidated. */
+ if (i < 0
+ && rld[r].out != 0
+ && MEM_P (rld[r].out))
+ {
+ rtx out = XEXP (rld[r].out, 0); /* address expression */
+ enum rtx_code code = GET_CODE (out);
+
+ if (code != POST_INC && code != POST_DEC
+ && code != PRE_INC && code != PRE_DEC)
+ {
+ /* do nothing */
+ }
+ else
+ {
+ int out_regno = REGNO (XEXP (out, 0));
+ machine_mode mode = GET_MODE (XEXP (out, 0));
+
+ /* for the moment, handle only the case where out_regno
+ is a hardware register */
+
+ if (HARD_REGISTER_NUM_P (out_regno))
+ {
+ int k, out_nregs = hard_regno_nregs (out_regno, mode);
+
+ for (k = 0; k < out_nregs; k++)
+ reg_last_reload_reg[out_regno + k] = 0;
+ }
+ }
+ }
+#endif /* AUTO_INC_DEC */
+#endif
}
reg_reloaded_dead |= reg_reloaded_died;
}
