diff options
| author | Richard Biener <rguenther@suse.de> | 2015-07-01 07:36:25 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2015-07-01 07:36:25 +0000 |
| commit | 88a2d13f6c3565b1bcfdb440ec0988159818f339 (patch) | |
| tree | e8fc121f69401342347e0171f7cab34f1ff75e7e /gcc/genmatch.c | |
| parent | e8cfe4c5a5490317edaba67819f1a4253e464e23 (diff) | |
| download | gcc-88a2d13f6c3565b1bcfdb440ec0988159818f339.zip gcc-88a2d13f6c3565b1bcfdb440ec0988159818f339.tar.gz gcc-88a2d13f6c3565b1bcfdb440ec0988159818f339.tar.bz2 | |
genmatch.c (expr::gen_transform): Shortcut re-simplifying of converts to avoid uninteresting noise from the...
2015-07-01 Richard Biener <rguenther@suse.de>
* genmatch.c (expr::gen_transform): Shortcut re-simplifying
of converts to avoid uninteresting noise from the conversion
simplifying patterns.
From-SVN: r225223
Diffstat (limited to 'gcc/genmatch.c')
| -rw-r--r-- | gcc/genmatch.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/genmatch.c b/gcc/genmatch.c index 2bd61d3..6f8cea9 100644 --- a/gcc/genmatch.c +++ b/gcc/genmatch.c @@ -1740,6 +1740,10 @@ expr::gen_transform (FILE *f, const char *dest, bool gimple, int depth, if (gimple) { + if (*operation == CONVERT_EXPR) + fprintf (f, " if (%s != TREE_TYPE (ops%d[0])\n" + " && !useless_type_conversion_p (%s, TREE_TYPE (ops%d[0])))\n" + " {\n", type, depth, type, depth); /* ??? Building a stmt can fail for various reasons here, seq being NULL or the stmt referencing SSA names occuring in abnormal PHIs. So if we fail here we should continue matching other patterns. */ @@ -1752,9 +1756,15 @@ expr::gen_transform (FILE *f, const char *dest, bool gimple, int depth, ops.length (), type); fprintf (f, " res = maybe_push_res_to_seq (tem_code, %s, tem_ops, seq);\n" " if (!res) return false;\n", type); + if (*operation == CONVERT_EXPR) + fprintf (f, " }\n" + " else\n" + " res = ops%d[0];\n", depth); } else { + if (*operation == CONVERT_EXPR) + fprintf (f, " if (TREE_TYPE (ops%d[0]) != %s)\n", depth, type); if (operation->kind == id_base::CODE) fprintf (f, " res = fold_build%d_loc (loc, %s, %s", ops.length(), opr, type); @@ -1764,6 +1774,9 @@ expr::gen_transform (FILE *f, const char *dest, bool gimple, int depth, for (unsigned i = 0; i < ops.length (); ++i) fprintf (f, ", ops%d[%u]", depth, i); fprintf (f, ");\n"); + if (*operation == CONVERT_EXPR) + fprintf (f, " else\n" + " res = ops%d[0];\n", depth); } fprintf (f, "%s = res;\n", dest); fprintf (f, "}\n"); |