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| author | Richard Kenner <kenner@gcc.gnu.org> | 1994-06-16 18:54:00 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1994-06-16 18:54:00 -0400 |
| commit | 224f1d7123164a8c7ed9f313320b464c468b8b18 (patch) | |
| tree | a92d924535e2b5a0b6f0ffdcee76bd5595afd98d /gcc | |
| parent | 787e63c8f337d23db7c6d162ed4413403274544e (diff) | |
| download | gcc-224f1d7123164a8c7ed9f313320b464c468b8b18.zip gcc-224f1d7123164a8c7ed9f313320b464c468b8b18.tar.gz gcc-224f1d7123164a8c7ed9f313320b464c468b8b18.tar.bz2 | |
(reload_reg_free_p, case RELOAD_OTHER): Allowed to conflict with
RELOAD_FOR_OTHER_ADDRESS.
From-SVN: r7505
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/reload1.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index 6de6b1d..11e0a1b 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)) |