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| author | Adrian Straetling <straetling@de.ibm.com> | 2005-06-28 19:56:23 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2005-06-28 19:56:23 +0000 |
| commit | 57e84f1840c3da2c5c73d5c2f81a9b922957a27b (patch) | |
| tree | 1c07634d50dcd55dcccb73af6219e12082ada423 /gcc/expr.h | |
| parent | 617a1b714435a270ccf699c4c6e17767088e2242 (diff) | |
| download | gcc-57e84f1840c3da2c5c73d5c2f81a9b922957a27b.zip gcc-57e84f1840c3da2c5c73d5c2f81a9b922957a27b.tar.gz gcc-57e84f1840c3da2c5c73d5c2f81a9b922957a27b.tar.bz2 | |
builtins.c: (expand_builtin_memset): Rewrite to support 'set_storage_via_setmem'.
2006-06-28 Adrian Straetling <straetling@de.ibm.com>
* builtins.c: (expand_builtin_memset): Rewrite to support
'set_storage_via_setmem'.
* expr.c: (enum insn_code setmem_optab): Define.
(enum insn_code clrmem_optab): Remove.
(set_storage_via_setmem): New function.
(clear_storage_via_setmem): Remove.
(clear_storage): Replace call to "clear_storage_via_clrmem" with
"set_storage_via_setmem".
* expr.h: (set_storage_via_setmem): Declare.
(CLEAR_RATIO): Redefine using HAVE_setmemM.
* optabs.h: (enum insn_code setmem_optab): Declare.
(enum insn_code clrmem_optab): Remove.
* optabs.c: (init_optabs): Initialize setmem_optab.
(enum insn_code clrmem_optab): Remove.
* genopinit.c: (otabs): Likewise.
* doc/md.texi: Document new standard pattern 'setmem'. Remove
'clrmem'.
* config/alpha/alpha.c: (alpha_expand_block_clear): Adjust
'operands' ordering.
* config/frv/frv.c: (frv_expand_block_clear): Likewise.
* config/rs6000/rs6000.c: (expand_block_clear): Likewise.
* config/alpha/alpha.md: ("clrmemqi", "clrmemdi"): Rename to "setmemM".
FAIL on operands[2]!=const0_rtx. Adjust 'operands' ordering.
* config/avr/avr.md: ("clrmemhi"): Likewise.
* config/frv/frv.md: ("clrmemsi"): Likewise.
* config/i386/i386.md: ("clrmemsi", "clrmemdi"): Likewise.
* config/pa/pa.md: ("clrmemsi", "clrmemdi"): Likewise.
* config/rs6000/rs6000.md: ("clrmemsi"): Likewise.
* config/s390/s390.md: ("clrmem<mode>"): Likewise.
From-SVN: r101386
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 7 |
1 files changed, 5 insertions, 2 deletions
@@ -75,10 +75,10 @@ enum expand_modifier {EXPAND_NORMAL = 0, EXPAND_STACK_PARM, EXPAND_SUM, #endif /* If a clear memory operation would take CLEAR_RATIO or more simple - move-instruction sequences, we will do a clrmem or libcall instead. */ + move-instruction sequences, we will do a setmem or libcall instead. */ #ifndef CLEAR_RATIO -#if defined (HAVE_clrmemqi) || defined (HAVE_clrmemhi) || defined (HAVE_clrmemsi) || defined (HAVE_clrmemdi) || defined (HAVE_clrmemti) +#if defined (HAVE_setmemqi) || defined (HAVE_setmemhi) || defined (HAVE_setmemsi) || defined (HAVE_setmemdi) || defined (HAVE_setmemti) #define CLEAR_RATIO 2 #else /* If we are optimizing for space, cut down the default clear ratio. */ @@ -423,6 +423,9 @@ extern void use_group_regs (rtx *, rtx); If OBJECT has BLKmode, SIZE is its length in bytes. */ extern rtx clear_storage (rtx, rtx, enum block_op_methods); +/* Expand a setmem pattern; return true if successful. */ +extern bool set_storage_via_setmem (rtx, rtx, rtx, unsigned int); + /* Determine whether the LEN bytes can be moved by using several move instructions. Return nonzero if a call to move_by_pieces should succeed. */ |