From 224f1d7123164a8c7ed9f313320b464c468b8b18 Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Thu, 16 Jun 1994 18:54:00 -0400 Subject: [PATCH] (reload_reg_free_p, case RELOAD_OTHER): Allowed to conflict with RELOAD_FOR_OTHER_ADDRESS. From-SVN: r7505 --- gcc/reload1.c | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) diff --git a/gcc/reload1.c b/gcc/reload1.c index 6de6b1d4ff0..11e0a1bf4a6 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -4156,10 +4156,22 @@ reload_reg_free_p (regno, opnum, type) switch (type) { case RELOAD_OTHER: - /* In use for anything means not available for a RELOAD_OTHER. */ - return ! TEST_HARD_REG_BIT (reload_reg_used_at_all, regno); + /* In use for anything except RELOAD_FOR_OTHER_ADDRESS means + we can't use it for RELOAD_OTHER. */ + if (TEST_HARD_REG_BIT (reload_reg_used, regno) + || TEST_HARD_REG_BIT (reload_reg_used_in_op_addr, regno) + || TEST_HARD_REG_BIT (reload_reg_used_in_insn, regno)) + return 0; + + for (i = 0; i < reload_n_operands; i++) + if (TEST_HARD_REG_BIT (reload_reg_used_in_input_addr[i], regno) + || TEST_HARD_REG_BIT (reload_reg_used_in_output_addr[i], regno) + || TEST_HARD_REG_BIT (reload_reg_used_in_input[i], regno) + || TEST_HARD_REG_BIT (reload_reg_used_in_output[i], regno)) + return 0; + + return 1; - /* The other kinds of use can sometimes share a register. */ case RELOAD_FOR_INPUT: if (TEST_HARD_REG_BIT (reload_reg_used_in_insn, regno) || TEST_HARD_REG_BIT (reload_reg_used_in_op_addr, regno)) -- 2.30.2