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| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-12 14:18:56 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2000-04-12 14:18:56 +0000 |
| commit | 0cd832f07426f9b494317f30a430fb30182fb743 (patch) | |
| tree | 45c7057fb9d4c1fc610166788acd0e6469c79af9 /gcc/builtins.c | |
| parent | fa4f1f09902e75f0d09d58d0c6bdf45e3bb73fef (diff) | |
| download | gcc-0cd832f07426f9b494317f30a430fb30182fb743.tar.gz | |
* builtins.c (expand_builtin_memcmp): Do expansion even with
!HAVE_cmpstrsi, do libcall when gen_strcmpsi fails.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33107 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/builtins.c')
| -rw-r--r-- | gcc/builtins.c | 27 |
1 files changed, 21 insertions, 6 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c index 1590d38c873..9159a1b2c8f 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -1628,15 +1628,15 @@ expand_builtin_memcmp (exp, arglist, target) || TREE_CHAIN (TREE_CHAIN (arglist)) == 0 || TREE_CODE (TREE_TYPE (TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))))) != INTEGER_TYPE) return 0; - else if (!HAVE_cmpstrsi) - return 0; { enum machine_mode mode; tree arg1 = TREE_VALUE (arglist); tree arg2 = TREE_VALUE (TREE_CHAIN (arglist)); tree len = TREE_VALUE (TREE_CHAIN (TREE_CHAIN (arglist))); + rtx arg1_rtx, arg2_rtx, arg3_rtx; rtx result; + rtx insn; int arg1_align = get_pointer_alignment (arg1, BIGGEST_ALIGNMENT) / BITS_PER_UNIT; @@ -1656,10 +1656,25 @@ expand_builtin_memcmp (exp, arglist, target) && REGNO (result) >= FIRST_PSEUDO_REGISTER)) result = gen_reg_rtx (insn_mode); - emit_insn (gen_cmpstrsi (result, get_memory_rtx (arg1), - get_memory_rtx (arg2), - expand_expr (len, NULL_RTX, VOIDmode, 0), - GEN_INT (MIN (arg1_align, arg2_align)))); + arg1_rtx = get_memory_rtx (arg1); + arg2_rtx = get_memory_rtx (arg2); + arg3_rtx = expand_expr (len, NULL_RTX, VOIDmode, 0); + if (!HAVE_cmpstrsi) + insn = NULL_RTX; + else + insn = gen_cmpstrsi (result, arg1_rtx, arg2_rtx, arg3_rtx, + GEN_INT (MIN (arg1_align, arg2_align))); + + if (insn) + emit_insn (insn); + else + emit_library_call_value (memcmp_libfunc, result, 2, + TYPE_MODE (integer_type_node), 3, + XEXP (arg1_rtx, 0), Pmode, + XEXP (arg2_rtx, 0), Pmode, + convert_to_mode (TYPE_MODE (sizetype), arg3_rtx, + TREE_UNSIGNED (sizetype)), + TYPE_MODE (sizetype)); /* Return the value in the proper mode for this function. */ mode = TYPE_MODE (TREE_TYPE (exp)); |