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| author | Ian Lance Taylor <ian@wasabisystems.com> | 2004-02-19 15:24:02 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2004-02-19 15:24:02 +0000 |
| commit | d754127f13abf5cb90e584ad4c6b6bf873597b5c (patch) | |
| tree | 9fad95ec718c81cbb34aae67a9819f4583626c19 /gcc/reload1.c | |
| parent | 78cb77c13e86cb36640cf57230e2211aaea0ef2f (diff) | |
| download | gcc-d754127f13abf5cb90e584ad4c6b6bf873597b5c.zip gcc-d754127f13abf5cb90e584ad4c6b6bf873597b5c.tar.gz gcc-d754127f13abf5cb90e584ad4c6b6bf873597b5c.tar.bz2 | |
reload1.c (reload): Correct comment.
* reload1.c (reload): Correct comment.
(scan_paradoxical_subregs): Remove #if 0 and old comment.
* doc/extend.texi (Local Reg Vars): Remove obsolete comment that
register variables are not used by reload.
From-SVN: r78100
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index dacf1b5..b64abf1 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -707,10 +707,9 @@ reload (rtx first, int global) CLEAR_HARD_REG_SET (bad_spill_regs_global); - /* Look for REG_EQUIV notes; record what each pseudo is equivalent to. - Also find all paradoxical subregs and find largest such for each pseudo. - On machines with small register classes, record hard registers that - are used for user variables. These can never be used for spills. */ + /* Look for REG_EQUIV notes; record what each pseudo is equivalent + to. Also find all paradoxical subregs and find largest such for + each pseudo. */ num_eliminable_invariants = 0; for (insn = first; insn; insn = NEXT_INSN (insn)) @@ -3713,9 +3712,7 @@ finish_spills (int global) return something_changed; } -/* Find all paradoxical subregs within X and update reg_max_ref_width. - Also mark any hard registers used to store user variables as - forbidden from being used for spill registers. */ +/* Find all paradoxical subregs within X and update reg_max_ref_width. */ static void scan_paradoxical_subregs (rtx x) @@ -3727,13 +3724,6 @@ scan_paradoxical_subregs (rtx x) switch (code) { case REG: -#if 0 - if (SMALL_REGISTER_CLASSES && REGNO (x) < FIRST_PSEUDO_REGISTER - && REG_USERVAR_P (x)) - SET_HARD_REG_BIT (bad_spill_regs_global, REGNO (x)); -#endif - return; - case CONST_INT: case CONST: case SYMBOL_REF: |