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| author | Richard Henderson <rth@redhat.com> | 2002-02-07 00:57:04 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-02-07 00:57:04 -0800 |
| commit | 9b462c4274cd675e51fe0b856a903828d78d7cd7 (patch) | |
| tree | e762c2f5f7d5a1e88c4f53877a61a162f6301be0 /gcc/alias.c | |
| parent | 19c881777cb933a3a5206b49ea4598070fb3b594 (diff) | |
| download | gcc-9b462c4274cd675e51fe0b856a903828d78d7cd7.zip gcc-9b462c4274cd675e51fe0b856a903828d78d7cd7.tar.gz gcc-9b462c4274cd675e51fe0b856a903828d78d7cd7.tar.bz2 | |
alias.c (find_base_value): Recall base values for fixed hard regs.
* alias.c (find_base_value): Recall base values for fixed hard regs.
* loop.c (loop_regs_update): Don't use single_set on non-insns.
From-SVN: r49570
Diffstat (limited to 'gcc/alias.c')
| -rw-r--r-- | gcc/alias.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/gcc/alias.c b/gcc/alias.c index a84d894..95b16ca 100644 --- a/gcc/alias.c +++ b/gcc/alias.c @@ -744,12 +744,12 @@ find_base_value (src) return new_reg_base_value[regno]; /* If a pseudo has a known base value, return it. Do not do this - for hard regs since it can result in a circular dependency - chain for registers which have values at function entry. + for non-fixed hard regs since it can result in a circular + dependency chain for registers which have values at function entry. The test above is not sufficient because the scheduler may move a copy out of an arg reg past the NOTE_INSN_FUNCTION_BEGIN. */ - if (regno >= FIRST_PSEUDO_REGISTER + if ((regno >= FIRST_PSEUDO_REGISTER || fixed_regs[regno]) && regno < reg_base_value_size && reg_base_value[regno]) return reg_base_value[regno]; |