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| author | Bernd Schmidt <bernds@cygnus.co.uk> | 2000-01-12 12:40:49 +0000 |
|---|---|---|
| committer | Bernd Schmidt <crux@gcc.gnu.org> | 2000-01-12 12:40:49 +0000 |
| commit | 9e3a9cf21e21f7bc33c9cf7082e6185a4f19a919 (patch) | |
| tree | 941205febbd323ea550b25d18acc1dfac3c3bd1b /gcc/reload1.c | |
| parent | 02368d6dd494ec96e04bb987fcadfc39fa065301 (diff) | |
| download | gcc-9e3a9cf21e21f7bc33c9cf7082e6185a4f19a919.zip gcc-9e3a9cf21e21f7bc33c9cf7082e6185a4f19a919.tar.gz gcc-9e3a9cf21e21f7bc33c9cf7082e6185a4f19a919.tar.bz2 | |
Fix suboptimal code generation bug in reload
From-SVN: r31352
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index d817f0f..2245e9f 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -3990,6 +3990,8 @@ forget_old_reloads_1 (x, ignored, data) /* The following HARD_REG_SETs indicate when each hard register is used for a reload of various parts of the current insn. */ +/* If reg is unavailable for all reloads. */ +static HARD_REG_SET reload_reg_unavailable; /* If reg is in use as a reload reg for a RELOAD_OTHER reload. */ static HARD_REG_SET reload_reg_used; /* If reg is in use for a RELOAD_FOR_INPUT_ADDRESS reload for operand I. */ @@ -4213,7 +4215,8 @@ reload_reg_free_p (regno, opnum, type) int i; /* In use for a RELOAD_OTHER means it's not available for anything. */ - if (TEST_HARD_REG_BIT (reload_reg_used, regno)) + if (TEST_HARD_REG_BIT (reload_reg_used, regno) + || TEST_HARD_REG_BIT (reload_reg_unavailable, regno)) return 0; switch (type) @@ -4617,11 +4620,7 @@ reload_reg_free_for_value_p (regno, opnum, type, value, out, reloadnum, int i; int copy = 0; - /* ??? reload_reg_used is abused to hold the registers that are not - available as spill registers, including hard registers that are - earlyclobbered in asms. As a temporary measure, reject anything - in reload_reg_used. */ - if (TEST_HARD_REG_BIT (reload_reg_used, regno)) + if (TEST_HARD_REG_BIT (reload_reg_unavailable, regno)) return 0; if (out == const0_rtx) @@ -5064,7 +5063,7 @@ choose_reload_regs_init (chain, save_reload_reg_rtx) CLEAR_HARD_REG_SET (reload_reg_used_in_outaddr_addr[i]); } - IOR_COMPL_HARD_REG_SET (reload_reg_used, chain->used_spill_regs); + COMPL_HARD_REG_SET (reload_reg_unavailable, chain->used_spill_regs); CLEAR_HARD_REG_SET (reload_reg_used_for_inherit); |