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riscv-gcc-1
Commit 37747c82 by Richard Kenner
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(record_reg_classes): Check if operands are the same by seeing if they 

are the same register.

From-SVN: r5632
parent 2bb81c86
Showing with 3 additions and 4 deletions
gcc/regclass.c
...@@ -998,10 +998,9 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn) ...@@ -998,10 +998,9 @@ record_reg_classes (n_alts, n_ops, ops, modes, constraints, insn)
instruction. */ instruction. */
this_op_costs[i] = this_op_costs[j]; this_op_costs[i] = this_op_costs[j];
if (! (GET_CODE (op) == REG && rtx_equal_p (op, ops[j]))) if (REGNO (ops[i]) != REGNO (ops[j])
/* No cost if both are the same pseudo reg. */ && ! find_reg_note (insn, REG_DEAD, op))
if (! find_reg_note (insn, REG_DEAD, op)) alt_cost += 2;
alt_cost += 2;
/* This is in place of ordinary cost computation /* This is in place of ordinary cost computation
for this operand, so skip to the end of the for this operand, so skip to the end of the
......
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