31 lines
915 B
Diff
31 lines
915 B
Diff
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diff -uprN a/gcc/lra.c b/gcc/lra.c
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--- a/gcc/lra.c 2020-12-14 15:26:36.331633230 +0800
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+++ b/gcc/lra.c 2020-12-15 18:56:33.699633230 +0800
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@@ -507,6 +507,26 @@ lra_emit_move (rtx x, rtx y)
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data. */
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if (old != max_reg_num ())
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expand_reg_data (old);
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+ while (insn != NULL)
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+ {
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+ if (GET_CODE (PATTERN (insn)) == SET
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+ && GET_CODE (SET_SRC (PATTERN (insn))) == LO_SUM
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+ && GET_CODE (SET_DEST (PATTERN (insn))) == REG
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+ && strcmp (insn_data[recog_memoized (insn)].name,
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+ "add_losym_di") == 0)
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+ {
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+ rtx add_losym_dest = SET_DEST (PATTERN (insn));
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+ for (int i = (int) max_reg_num () - 1; i >= old; i--)
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+ {
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+ if (regno_reg_rtx[i] == add_losym_dest)
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+ {
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+ setup_reg_classes (i, GENERAL_REGS,
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+ NO_REGS, GENERAL_REGS);
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+ }
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+ }
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+ }
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+ insn = PREV_INSN (insn);
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+ }
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return;
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}
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lra_emit_add (x, XEXP (y, 0), XEXP (y, 1));
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