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re PR target/54089 ([SH] Refactor shift patterns) 

gcc/
	PR target/54089
	* config/sh/sh.md (*rotcr): Add another variant.

gcc/testsuite/
	PR target/54089
	* gcc.target/sh/pr54089-1.c (test_24): Add new sub-test.

From-SVN: r235950
This commit is contained in:
Oleg Endo 2016-05-06 09:41:57 +00:00
parent 498988ad6a
commit 3684b02efb
4 changed files with 34 additions and 1 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2016-05-06 Oleg Endo <olegendo@gcc.gnu.org>
PR target/54089
* config/sh/sh.md (*rotcr): Add another variant.
2016-05-06 Richard Biener <rguenther@suse.de>
PR middle-end/70931

16
gcc/config/sh/sh.md
View File

@ -3359,6 +3359,22 @@
DONE;
})
(define_insn_and_split "*rotcr"
[(set (match_operand:SI 0 "arith_reg_dest")
(ior:SI (lshiftrt:SI (match_operand:SI 1 "arith_reg_operand")
(const_int 1))
(const_int -2147483648))) ;; 0xffffffff80000000
(clobber (reg:SI T_REG))]
"TARGET_SH1"
"#"
"&& can_create_pseudo_p ()"
[(const_int 0)]
{
emit_insn (gen_sett ());
emit_insn (gen_rotcr (operands[0], operands[1], get_t_reg_rtx ()));
DONE;
})
;; rotcr combine patterns for rotating in the negated T_REG value.
(define_insn_and_split "*rotcr_neg_t"
[(set (match_operand:SI 0 "arith_reg_dest")

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2016-05-06 Oleg Endo <olegendo@gcc.gnu.org>
PR target/54089
* gcc.target/sh/pr54089-1.c (test_24): Add new sub-test.
2016-05-06 Richard Biener <rguenther@suse.de>
PR middle-end/70931

9
gcc/testsuite/gcc.target/sh/pr54089-1.c
View File

@ -1,7 +1,8 @@
/* Check that the rotcr instruction is generated. */
/* { dg-do compile } */
/* { dg-options "-O2" } */
/* { dg-final { scan-assembler-times "rotcr" 24 } } */
/* { dg-final { scan-assembler-times "rotcr" 25 } } */
/* { dg-final { scan-assembler-times "sett" 1 } } */
/* { dg-final { scan-assembler-times "shll\t" 1 } } */
/* { dg-final { scan-assembler-not "and\t#1" } } */
/* { dg-final { scan-assembler-not "cmp/pl" } } */
@ -173,3 +174,9 @@ test_23 (unsigned int a, int b, int c)
bool r = b != c;
return ((a >> 31) | (r << 31));
}
unsigned int
test_24 (unsigned int a)
{
return (a >> 1) | (1 << 31);
}