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authorBernd Schmidt <bernds@codesourcery.com>2011-06-21 14:16:39 +0000
committerBernd Schmidt <bernds@gcc.gnu.org>2011-06-21 14:16:39 +0000
commit3801c801f35ca5e0c52b437161141c251aa33daf (patch)
treeee32816cbc97cc6b5823412e083d7944b01b96a7 /gcc/rtl.def
parent95f5c7757f027c4c9afbb97a7a24be0cc9ad7841 (diff)
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Makefile.in (lib2funcs): Add _clrsbsi2 and _clrsbdi2.
libgcc/ * Makefile.in (lib2funcs): Add _clrsbsi2 and _clrsbdi2. * libgcc-std.ver.in (GCC_4.7.0): New section. gcc/ * doc/extend.texi (__builtin_clrsb, __builtin_clrsbl, __builtin_clrsbll): Document. * doc/rtl.texi (clrsb): New entry. * optabs.c (widen_leading): Renamed from widen_clz. New argument UNOPTAB. All callers changed. Use UNOPTAB instead of clz_optab. (expand_unop): Handle clrsb_optab. (init_optabs): Initialize it. * optabs.h (enum optab_index): New entry OTI_clrsb. (clrsb_optab): Define. * genopinit.c (optabs): Add an entry for it. * builtins.c (expand_builtin): Handle clrsb builtin functions. * builtins.def (BUILT_IN_CLRSB, BUILT_IN_CLRSBIMAX, BUILT_IN_CLRSBL, BUILT_IN_CLRSBLL): New. * rtl.def (CLRSB): New code. * dwarf2out.c (mem_loc_descriptor): Handle it. * simplify-rtx.c (simplify_const_unary_operation): Likewise. Use op_mode rather than mode when optimizing ffs, clz, ctz, parity and popcount. * libgcc2.c (__clrsbSI2, __clrsbDI2): New functions. * libgcc2.h (__clrsbSI2, __clrsbDI2): Define and declare. (__ctzDI2): Move declaration. * config/bfin/bfin.md (clrsbsi2): New expander. (signbitssi2): Use the CLRSB rtx. (clrsbhi2): Renamed from signbitshi2. Use the CLRSB rtx. * config/bfin/bfin.c (bdesc_1arg): Changed accordingly. gcc/testsuite/ * gcc.c-torture/excute/builtin-bitops-1.c (MAKE_FUNS): Make my_clrsb test functions. (main): Test clrsb. * gcc.dg/builtin-protos-1.c (test_s, test_u, test_sl, test_ul, test_sll, test_ull): Add clrsb tests. * gcc.dg/torture/builtin-attr-1.c: Add tests for clrsb, clrsbl, clrsbll. From-SVN: r175261
Diffstat (limited to 'gcc/rtl.def')
-rw-r--r--gcc/rtl.def4
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/rtl.def b/gcc/rtl.def
index cb5555a..8f04b2f 100644
--- a/gcc/rtl.def
+++ b/gcc/rtl.def
@@ -613,6 +613,10 @@ DEF_RTL_EXPR(BSWAP, "bswap", "e", RTX_UNARY)
or 0 if arg is 0. */
DEF_RTL_EXPR(FFS, "ffs", "e", RTX_UNARY)
+/* Count number of leading redundant sign bits (number of leading
+ sign bits minus one). */
+DEF_RTL_EXPR(CLRSB, "clrsb", "e", RTX_UNARY)
+
/* Count leading zeros. */
DEF_RTL_EXPR(CLZ, "clz", "e", RTX_UNARY)