diff options
Diffstat (limited to 'gcc/genmatch.c')
| -rw-r--r-- | gcc/genmatch.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/genmatch.c b/gcc/genmatch.c index 93d5b21..5621aa0 100644 --- a/gcc/genmatch.c +++ b/gcc/genmatch.c @@ -2525,7 +2525,18 @@ capture::gen_transform (FILE *f, int indent, const char *dest, bool gimple, } } - fprintf_indent (f, indent, "%s = captures[%u];\n", dest, where); + /* If in GENERIC some capture is used multiple times, unshare it except + when emitting the last use. */ + if (!gimple + && cinfo->info.exists () + && cinfo->info[cinfo->info[where].same_as].result_use_count > 1) + { + fprintf_indent (f, indent, "%s = unshare_expr (captures[%u]);\n", + dest, where); + cinfo->info[cinfo->info[where].same_as].result_use_count--; + } + else + fprintf_indent (f, indent, "%s = captures[%u];\n", dest, where); /* ??? Stupid tcc_comparison GENERIC trees in COND_EXPRs. Deal with substituting a capture of that. */ |