diff options
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/genmatch.c | 13 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bedeee1..af2c5d8 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +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. + 2015-06-30 Sandra Loosemore <sandra@codesourcery.com> * config/c6x/c6x.c (try_rename_operands): Do not depend on 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"); |