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| author | Oleg Endo <olegendo@gcc.gnu.org> | 2023-10-23 22:08:37 +0900 |
|---|---|---|
| committer | Oleg Endo <olegendo@gcc.gnu.org> | 2023-10-23 22:11:01 +0900 |
| commit | 267e369afbb963d8d84d7a9f0cb9fb18672d99a8 (patch) | |
| tree | 0ac91aaefbf89d4b0115e29cee3c7197c0a89055 | |
| parent | 9ed6b22eb4188c57bb3f5cdba5a7effa95395186 (diff) | |
| download | gcc-267e369afbb963d8d84d7a9f0cb9fb18672d99a8.zip gcc-267e369afbb963d8d84d7a9f0cb9fb18672d99a8.tar.gz gcc-267e369afbb963d8d84d7a9f0cb9fb18672d99a8.tar.bz2 | |
SH: Fix PR 111001
gcc/ChangeLog:
PR target/111001
* config/sh/sh_treg_combine.cc (sh_treg_combine::record_set_of_reg):
Skip over nop move insns.
| -rw-r--r-- | gcc/config/sh/sh_treg_combine.cc | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/config/sh/sh_treg_combine.cc b/gcc/config/sh/sh_treg_combine.cc index 9f6a89f..9b35960 100644 --- a/gcc/config/sh/sh_treg_combine.cc +++ b/gcc/config/sh/sh_treg_combine.cc @@ -729,7 +729,14 @@ sh_treg_combine::record_set_of_reg (rtx reg, rtx_insn *start_insn, } else if (REG_P (new_entry.cstore.set_src ())) { - // If it's a reg-reg copy follow the copied reg. + // If it's a reg-reg copy follow the copied reg, but ignore + // nop copies of the reg onto itself. + if (REGNO (new_entry.cstore.set_src ()) == REGNO (reg)) + { + i = prev_nonnote_nondebug_insn_bb (i); + continue; + } + new_entry.cstore_reg_reg_copies.push_back (new_entry.cstore); reg = new_entry.cstore.set_src (); i = new_entry.cstore.insn; |