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| author | Jan Hubicka <jh@suse.cz> | 2003-01-07 23:14:43 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2003-01-07 22:14:43 +0000 |
| commit | 9635cfadeef9c6a1556a1675094a1f5af9e4fe8b (patch) | |
| tree | b69303dec14643feb1ed9f6714049e127cdb3831 /gcc/cselib.c | |
| parent | b5038cfb822f8f3881fab43d0149dd205d4ca001 (diff) | |
| download | gcc-9635cfadeef9c6a1556a1675094a1f5af9e4fe8b.zip gcc-9635cfadeef9c6a1556a1675094a1f5af9e4fe8b.tar.gz gcc-9635cfadeef9c6a1556a1675094a1f5af9e4fe8b.tar.bz2 | |
cselib.c (cselib_current_insn_in_libcall): New static variable.
* cselib.c (cselib_current_insn_in_libcall): New static variable.
(new_elt_loc_list, cselib_process_insn, cselib_init): Keep track on whether
we are inside libcall.
* cselib.h (elt_loc_list): Add in_libcall.
* gcse.c (do_local_cprop): Do not copy propagate using insns
in libcalls.
From-SVN: r61023
Diffstat (limited to 'gcc/cselib.c')
| -rw-r--r-- | gcc/cselib.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/cselib.c b/gcc/cselib.c index 2ef4c57..63fab22 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -85,6 +85,7 @@ static GTY((param_is (cselib_val))) htab_t hash_table; /* This is a global so we don't have to pass this through every function. It is used in new_elt_loc_list to set SETTING_INSN. */ static rtx cselib_current_insn; +static bool cselib_current_insn_in_libcall; /* Every new unknown value gets a unique number. */ static unsigned int next_unknown_value; @@ -165,6 +166,7 @@ new_elt_loc_list (next, loc) el->next = next; el->loc = loc; el->setting_insn = cselib_current_insn; + el->in_libcall = cselib_current_insn_in_libcall; return el; } @@ -1310,6 +1312,10 @@ cselib_process_insn (insn) int i; rtx x; + if (find_reg_note (insn, REG_LIBCALL, NULL)) + cselib_current_insn_in_libcall = true; + if (find_reg_note (insn, REG_RETVAL, NULL)) + cselib_current_insn_in_libcall = false; cselib_current_insn = insn; /* Forget everything at a CODE_LABEL, a volatile asm, or a setjmp. */ @@ -1409,6 +1415,7 @@ cselib_init () hash_table = htab_create_ggc (31, get_value_hash, entry_and_rtx_equal_p, NULL); clear_table (1); + cselib_current_insn_in_libcall = false; } /* Called when the current user is done with cselib. */ |