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| author | Eric Christopher <echristo@apple.com> | 2006-11-01 05:14:40 +0000 |
|---|---|---|
| committer | Geoffrey Keating <geoffk@gcc.gnu.org> | 2006-11-01 05:14:40 +0000 |
| commit | 167fa32c09eb5d93d23c74365a4ce818762de826 (patch) | |
| tree | 75385000f3e0304a84896c064ff32d8b0dc1c9bb /gcc/optabs.c | |
| parent | 5880f14fe8b5809110d1c3858c9259641fd5b92d (diff) | |
| download | gcc-167fa32c09eb5d93d23c74365a4ce818762de826.zip gcc-167fa32c09eb5d93d23c74365a4ce818762de826.tar.gz gcc-167fa32c09eb5d93d23c74365a4ce818762de826.tar.bz2 | |
extend.texi (__builtin_bswap32): Document.
2006-09-07 Eric Christopher <echristo@apple.com>
Falk Hueffner <falk@debian.org>
* doc/extend.texi (__builtin_bswap32): Document.
(__builtin_bswap64): Ditto.
* doc/libgcc.texi (bswapsi2): Document.
(bswapdi2): Ditto.
* doc/rtl.texi (bswap): Document.
* optabs.c (expand_unop): Don't widen a bswap.
(init_optabs): Init bswap. Set libfuncs explicitly
for bswapsi2 and bswapdi2.
* optabs.h (OTI_bswap): New.
(bswap_optab): Ditto.
* genopinit.c (optabs): Handle bswap_optab.
* tree.h (tree_index): Add TI_UINT32_TYPE and
TI_UINT64_TYPE.
(uint32_type_node): New.
(uint64_type_node): Ditto.
* tree.c (build_common_tree_nodes_2): Initialize
uint32_type_node and uint64_type_node.
* builtins.c (expand_builtin_bswap): New.
(expand_builtin): Call.
(fold_builtin_bswap): New.
(fold_builtin_1): Call.
* fold-const.c (tree_expr_nonnegative_p): Return true
for bswap.
* builtin-types.def (BT_UINT32): New.
(BT_UINT64): Ditto.
(BT_FN_UINT32_UINT32): Ditto.
(BT_FN_UINT64_UINT64): Ditto.
* builtins.def (BUILT_IN_BSWAP32): New.
(BUILT_IN_BSWAP64): Ditto.
* rtl.def (BSWAP): New.
* genattrtab.c (check_attr_value): New.
* libgcc2.c (__bswapSI2): New.
(__bswapDI2): Ditto.
* libgcc2.h (__bswapSI2): Declare.
(__bswapDI2): Ditto.
* mklibgcc.in (lib2funcs): Add _bswapsi2 and _bswapdi2.
* simplify-rtx.c (simplify_const_unary_operation): Return
0 for BSWAP.
* libgcc-std.ver (__bwapsi2): Add.
(__bswapdi2): Ditto.
* reload1.c (eliminate_regs_1): Add bswap.
(elimination_effects): Ditto.
* config/i386/i386.h (x86_bswap): New.
(TARGET_BSWAP): Use.
* config/i386/i386.c (x86_bswap): Set.
Co-Authored-By: Falk Hueffner <falk@debian.org>
From-SVN: r118361
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index 4f9374a..92887ab 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -2590,6 +2590,10 @@ expand_unop (enum machine_mode mode, optab unoptab, rtx op0, rtx target, goto try_libcall; } + /* We can't widen a bswap. */ + if (unoptab == bswap_optab) + goto try_libcall; + if (CLASS_HAS_WIDER_MODES_P (class)) for (wider_mode = GET_MODE_WIDER_MODE (mode); wider_mode != VOIDmode; @@ -5292,6 +5296,7 @@ init_optabs (void) absv_optab = init_optabv (ABS); addcc_optab = init_optab (UNKNOWN); one_cmpl_optab = init_optab (NOT); + bswap_optab = init_optab (BSWAP); ffs_optab = init_optab (FFS); clz_optab = init_optab (CLZ); ctz_optab = init_optab (CTZ); @@ -5504,6 +5509,11 @@ init_optabs (void) init_interclass_conv_libfuncs (trunc_optab, "trunc", MODE_FLOAT, MODE_DECIMAL_FLOAT); init_interclass_conv_libfuncs (trunc_optab, "trunc", MODE_DECIMAL_FLOAT, MODE_FLOAT); + /* Explicitly initialize the bswap libfuncs since we need them to be + valid for things other than word_mode. */ + set_optab_libfunc (bswap_optab, SImode, "__bswapsi2"); + set_optab_libfunc (bswap_optab, DImode, "__bswapdi2"); + /* Use cabs for double complex abs, since systems generally have cabs. Don't define any libcall for float complex, so that cabs will be used. */ if (complex_double_type_node) |