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| author | Roman Zippel <zippel@linux-m68k.org> | 2004-06-29 23:19:20 +0000 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2004-06-29 16:19:20 -0700 |
| commit | 909b7f16890963a8eff598a56a8b91e332502c07 (patch) | |
| tree | d268724f9483c34206dd2e23612cf389eb44c1bf /gcc/web.c | |
| parent | 97bb4af77a4b0cd8b706ab24ad5ae61e2f0f90f5 (diff) | |
| download | gcc-909b7f16890963a8eff598a56a8b91e332502c07.tar.gz | |
web.c (union_defs): use all defs of an instruction to create a union with a read/write use
* web.c (union_defs): use all defs of an instruction to create a
union with a read/write use
From-SVN: r83882
Diffstat (limited to 'gcc/web.c')
| -rw-r--r-- | gcc/web.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/web.c b/gcc/web.c index 11f2caa6cd2..91dbb90e3c3 100644 --- a/gcc/web.c +++ b/gcc/web.c @@ -160,11 +160,13 @@ union_defs (struct df *df, struct ref *use, struct web_entry *def_entry, { struct df_link *link = DF_INSN_DEFS (df, DF_REF_INSN (use)); - while (DF_REF_REAL_REG (link->ref) != DF_REF_REAL_REG (use)) - link = link->next; - - unionfind_union (use_entry + DF_REF_ID (use), - def_entry + DF_REF_ID (link->ref)); + while (link) + { + if (DF_REF_REAL_REG (link->ref) == DF_REF_REAL_REG (use)) + unionfind_union (use_entry + DF_REF_ID (use), + def_entry + DF_REF_ID (link->ref)); + link = link->next; + } } } |