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S/390: Fix warnings in "*setmem_long..." patterns.

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gcc/ChangeLog

	* config/s390/s390.c (s390_expand_setmem): Use new expanders.
	* config/s390/s390.md ("*setmem_long")
	("*setmem_long_and", "*setmem_long_31z"): Fix warnings.
	("*setmem_long_and_31z"): New define_insn.
	("setmem_long_<P:mode>"): New expanders.
	* (<modesize>): New mode attribute

gcc/testsuite/ChangeLog

	* gcc.target/s390/md/setmem_long-1.c: New test.

From-SVN: r231558
This commit is contained in:
Dominik Vogt 2015-12-11 11:16:13 +00:00 committed by Andreas Krebbel
parent 4a7dec25ac
commit da0dcab184
5 changed files with 115 additions and 11 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
2015-12-11 Dominik Vogt <vogt@linux.vnet.ibm.com>
* config/s390/s390.c (s390_expand_setmem): Use new expanders.
* config/s390/s390.md ("*setmem_long")
("*setmem_long_and", "*setmem_long_31z"): Fix warnings.
("*setmem_long_and_31z"): New define_insn.
("setmem_long_<P:mode>"): New expanders.
* (<modesize>): New mode attribute
2015-12-11 Dominik Vogt <vogt@linux.vnet.ibm.com>
* config/s390/s390.md ("movstr", "*movstr"): Fix warning.

7
gcc/config/s390/s390.c
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@ -5237,7 +5237,12 @@ s390_expand_setmem (rtx dst, rtx len, rtx val)
else if (TARGET_MVCLE)
{
val = force_not_mem (convert_modes (Pmode, QImode, val, 1));
emit_insn (gen_setmem_long (dst, convert_to_mode (Pmode, len, 1), val));
if (TARGET_64BIT)
emit_insn (gen_setmem_long_di (dst, convert_to_mode (Pmode, len, 1),
val));
else
emit_insn (gen_setmem_long_si (dst, convert_to_mode (Pmode, len, 1),
val));
}
else

50
gcc/config/s390/s390.md
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@ -70,6 +70,9 @@
; Copy CC as is into the lower 2 bits of an integer register
UNSPEC_CC_TO_INT
; The right hand side of an setmem
UNSPEC_REPLICATE_BYTE
; GOT/PLT and lt-relative accesses
UNSPEC_LTREL_OFFSET
UNSPEC_LTREL_BASE
@ -727,6 +730,9 @@
;; In place of GET_MODE_BITSIZE (<MODE>mode)
(define_mode_attr bitsize [(DI "64") (SI "32") (HI "16") (QI "8")])
;; In place of GET_MODE_SIZE (<MODE>mode)
(define_mode_attr modesize [(DI "8") (SI "4")])
;; Allow return and simple_return to be defined from a single template.
(define_code_iterator ANY_RETURN [return simple_return])
@ -3280,12 +3286,12 @@
; Initialize a block of arbitrary length with (operands[2] % 256).
(define_expand "setmem_long"
(define_expand "setmem_long_<P:mode>"
[(parallel
[(clobber (match_dup 1))
(set (match_operand:BLK 0 "memory_operand" "")
(match_operand 2 "shift_count_or_setmem_operand" ""))
(use (match_operand 1 "general_operand" ""))
(unspec:BLK [(match_operand:P 2 "shift_count_or_setmem_operand" "")
(match_dup 4)] UNSPEC_REPLICATE_BYTE))
(use (match_dup 3))
(clobber (reg:CC CC_REGNUM))])]
""
@ -3306,13 +3312,17 @@
operands[0] = replace_equiv_address_nv (operands[0], addr0);
operands[1] = reg0;
operands[3] = reg1;
operands[4] = gen_lowpart (Pmode, operands[1]);
})
; Patterns for 31 bit + Esa and 64 bit + Zarch.
(define_insn "*setmem_long"
[(clobber (match_operand:<DBL> 0 "register_operand" "=d"))
(set (mem:BLK (subreg:P (match_operand:<DBL> 3 "register_operand" "0") 0))
(match_operand 2 "shift_count_or_setmem_operand" "Y"))
(use (match_dup 3))
(unspec:BLK [(match_operand:P 2 "shift_count_or_setmem_operand" "Y")
(subreg:P (match_dup 3) <modesize>)]
UNSPEC_REPLICATE_BYTE))
(use (match_operand:<DBL> 1 "register_operand" "d"))
(clobber (reg:CC CC_REGNUM))]
"TARGET_64BIT || !TARGET_ZARCH"
@ -3323,9 +3333,11 @@
(define_insn "*setmem_long_and"
[(clobber (match_operand:<DBL> 0 "register_operand" "=d"))
(set (mem:BLK (subreg:P (match_operand:<DBL> 3 "register_operand" "0") 0))
(and (match_operand 2 "shift_count_or_setmem_operand" "Y")
(match_operand 4 "const_int_operand" "n")))
(use (match_dup 3))
(unspec:BLK [(and:P
(match_operand:P 2 "shift_count_or_setmem_operand" "Y")
(match_operand:P 4 "const_int_operand" "n"))
(subreg:P (match_dup 3) <modesize>)]
UNSPEC_REPLICATE_BYTE))
(use (match_operand:<DBL> 1 "register_operand" "d"))
(clobber (reg:CC CC_REGNUM))]
"(TARGET_64BIT || !TARGET_ZARCH) &&
@ -3334,11 +3346,14 @@
[(set_attr "length" "8")
(set_attr "type" "vs")])
; Variants for 31 bit + Zarch, necessary because of the odd in-register offsets
; of the SImode subregs.
(define_insn "*setmem_long_31z"
[(clobber (match_operand:TI 0 "register_operand" "=d"))
(set (mem:BLK (subreg:SI (match_operand:TI 3 "register_operand" "0") 4))
(match_operand 2 "shift_count_or_setmem_operand" "Y"))
(use (match_dup 3))
(unspec:BLK [(match_operand:SI 2 "shift_count_or_setmem_operand" "Y")
(subreg:SI (match_dup 3) 12)] UNSPEC_REPLICATE_BYTE))
(use (match_operand:TI 1 "register_operand" "d"))
(clobber (reg:CC CC_REGNUM))]
"!TARGET_64BIT && TARGET_ZARCH"
@ -3346,6 +3361,21 @@
[(set_attr "length" "8")
(set_attr "type" "vs")])
(define_insn "*setmem_long_and_31z"
[(clobber (match_operand:TI 0 "register_operand" "=d"))
(set (mem:BLK (subreg:SI (match_operand:TI 3 "register_operand" "0") 4))
(unspec:BLK [(and:SI
(match_operand:SI 2 "shift_count_or_setmem_operand" "Y")
(match_operand:SI 4 "const_int_operand" "n"))
(subreg:SI (match_dup 3) 12)] UNSPEC_REPLICATE_BYTE))
(use (match_operand:TI 1 "register_operand" "d"))
(clobber (reg:CC CC_REGNUM))]
"(!TARGET_64BIT && TARGET_ZARCH) &&
(INTVAL (operands[4]) & 255) == 255"
"mvcle\t%0,%1,%Y2\;jo\t.-4"
[(set_attr "length" "8")
(set_attr "type" "vs")])
;
; cmpmemM instruction pattern(s).
;

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2015-12-11 Dominik Vogt <vogt@linux.vnet.ibm.com>
* gcc.target/s390/md/setmem_long-1.c: New test.
2015-12-11 Dominik Vogt <vogt@linux.vnet.ibm.com>
* gcc.target/s390/md/movstr-1.c: New test.

56
gcc/testsuite/gcc.target/s390/md/setmem_long-1.c Normal file
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@ -0,0 +1,56 @@
/* Machine description pattern tests. */
/* { dg-do run } */
/* { dg-options "-mmvcle -dP -save-temps" } */
__attribute__ ((noinline))
void test(char *p, char c, int len)
{
__builtin_memset(p, c, len);
}
__attribute__ ((noinline))
void test2(char *p, int c, int len)
{
__builtin_memset(p, (char)c, len);
}
/* Check that the right patterns are used. */
/* { dg-final { scan-assembler-times {c:9 .*{[*]setmem_long_?3?1?z?}} 1 } } */
/* { dg-final { scan-assembler-times {c:15 .*{[*]setmem_long_and_?3?1?z?}} 1 { xfail *-*-* } } } */
#define LEN 500
char buf[LEN + 2];
void init_buf(void)
{
int i;
buf[0] = 0;
for (i = 1; i <= LEN; i++)
buf[i] = (0x10 + (i & 0x3f));
buf[LEN + 1] = 0x7f;
}
void validate_buf(char val)
{
int i;
if (buf[0] != 0)
__builtin_abort();
for (i = 1; i <= LEN; i++)
if (buf[i] != val)
__builtin_abort();
if (buf[LEN + 1] != 0x7f)
__builtin_abort();
}
int main(void)
{
init_buf();
test(buf + 1, 55, LEN);
validate_buf(55);
init_buf();
test(buf + 1, 66, LEN);
validate_buf(66);
}