Module Name: src
Committed By: kalvisd
Date: Sun Sep 29 07:52:04 UTC 2024
Modified Files:
src/external/gpl3/gcc/dist/gcc: function.cc
Log Message:
gcc: vax: instantiate virtual registers in SUBREGs' address operands
Load the address operand of a SUBREG into a register to allow virtual
registers to be instantiated
OK rin@
To generate a diff of this commit:
cvs rdiff -u -r1.1.1.1 -r1.2 src/external/gpl3/gcc/dist/gcc/function.cc
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/dist/gcc/function.cc
diff -u src/external/gpl3/gcc/dist/gcc/function.cc:1.1.1.1 src/external/gpl3/gcc/dist/gcc/function.cc:1.2
--- src/external/gpl3/gcc/dist/gcc/function.cc:1.1.1.1 Sun Jul 30 05:20:52 2023
+++ src/external/gpl3/gcc/dist/gcc/function.cc Sun Sep 29 07:52:04 2024
@@ -1724,6 +1724,25 @@ instantiate_virtual_regs_in_insn (rtx_in
break;
case SUBREG:
+ if (MEM_P (XEXP (x, 0)))
+ {
+ /* convert a subreg of a MEMORY operand into a
+ register operand */
+ rtx mx = XEXP (x, 0); /* memory operand */
+ rtx addr = XEXP (mx, 0);
+ instantiate_virtual_regs_in_rtx (&addr);
+ start_sequence ();
+ mx = replace_equiv_address (mx, addr, true);
+ addr = force_reg (GET_MODE (addr), addr);
+ mx = replace_equiv_address (mx, addr, true);
+ seq = get_insns ();
+ end_sequence ();
+ if (seq)
+ emit_insn_before (seq, insn);
+ /* generate a new subreg expression */
+ x = gen_rtx_SUBREG (GET_MODE (x), mx, SUBREG_BYTE (x));
+ }
+
new_rtx = instantiate_new_reg (SUBREG_REG (x), &offset);
if (new_rtx == NULL)
continue;
@@ -1830,6 +1849,13 @@ instantiate_decl_rtl (rtx x)
return;
}
+ /* If this is a SUBREG, recurse for the pieces */
+ if (GET_CODE (x) == SUBREG)
+ {
+ instantiate_decl_rtl (XEXP (x, 0));
+ return;
+ }
+
/* If this is not a MEM, no need to do anything. Similarly if the
address is a constant or a register that is not a virtual register. */
if (!MEM_P (x))
