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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-01-24 20:10:04 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-01-24 20:10:04 +0000 |
| commit | a4110d9a66b1bfab2679b8b4774839bcfb1b3cba (patch) | |
| tree | a9f7967b844ec94122754eade0945e4f551bf9f1 /gcc/cse.c | |
| parent | 8581412d5881e717bf3351f305d6b2e99dd64f96 (diff) | |
| download | gcc-a4110d9a66b1bfab2679b8b4774839bcfb1b3cba.tar.gz | |
* rtl.def: Add unordered fp comparisions.
* tree.def: Likewise.
* tree.h: Add ISO C 9x unordered fp comparision builtins.
* builtins.c (expand_tree_builtin): New function.
* c-typeck.c (build_function_call): Use it.
(build_binary_op): Support unordered compares.
* c-common.c (c_common_nodes_and_builtins): Add unordered compares.
* combine.c (known_cond): Handle reverse_condition returning UNKNOWN.
(reversible_comparison_p): Allow UNORDERED/ORDERED to be reversed.
* cse.c (fold_rtx): Check FLOAT_MODE_P before reversing.
(record_jump_equiv): Handle reverse_condition returning UNKNOWN.
* jump.c (reverse_condition): Don't abort for UNLE etc, but
return UNKNOWN.
(swap_condition): Handle unordered compares.
(thread_jumps): Check can_reverse before reversing.
* loop.c (get_condition): Likewise. Allow UNORERED/ORDERED to be
reversed for FP.
* optabs.c (can_compare_p): New argument CODE. Verify branch or
setcc is present before acking for cmp_optab. Update all callers.
(prepare_float_lib_cmp, init_optabs): Handle UNORDERED.
* expmed.c (do_cmp_and_jump): Update for can_compare_p.
* expr.c (expand_expr): Likewise. Support unordered compares.
(do_jump, do_store_flag): Likewise.
* expr.h (enum libfunc_index): Add unordered compares.
* Makefile.in (FPBIT_FUNCS): Add _unord_sf.
(DPBIT_FUNCS): Add _unord_df.
* config/fp-bit.c (_unord_f2): New.
* fp-test.c (main): Try unordered compare builtins.
* alpha-protos.h (alpha_fp_comparison_operator): Declare.
* alpha.c (alpha_comparison_operator): Check mode properly.
(alpha_swapped_comparison_operator): Likewise.
(signed_comparison_operator): Likewise.
(alpha_fp_comparison_operator): New.
(alpha_emit_conditional_branch): Handle unordered compares.
* alpha.h (PREDICATE_CODES): Update.
* alpha.md (fp compares): Use alpha_fp_comparison_operator.
(bunordered, bordered): New.
* cp/call.c (build_over_call): Use expand_tree_builtin.
* cp/typeck.c (build_function_call_real): Likewise.
(build_binary_op_nodefault): Handle unordered compares.
* gcc.c-torture/execute/ieee/fp-cmp-4.c: New.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@31591 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index b346199097a..9aced05f607 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -3718,9 +3718,9 @@ fold_rtx (x, insn) struct qty_table_elem *ent = &qty_table[qty]; if ((comparison_dominates_p (ent->comparison_code, code) - || (comparison_dominates_p (ent->comparison_code, - reverse_condition (code)) - && ! FLOAT_MODE_P (mode_arg0))) + || (! FLOAT_MODE_P (mode_arg0) + && comparison_dominates_p (ent->comparison_code, + reverse_condition (code)))) && (rtx_equal_p (ent->comparison_const, folded_arg1) || (const_arg1 && rtx_equal_p (ent->comparison_const, @@ -4156,6 +4156,10 @@ record_jump_equiv (insn, taken) { reversed_nonequality = (code != EQ && code != NE); code = reverse_condition (code); + + /* Don't remember if we can't find the inverse. */ + if (code == UNKNOWN) + return; } /* The mode is the mode of the non-constant. */ |