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| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2016-03-01 09:26:20 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2016-03-01 09:26:20 +0000 |
| commit | 708c0910a8f5bf48ec9ad54456dca3fc73360631 (patch) | |
| tree | 283552d6e89f7c36ca91a7a959821bd47df1b32e /gcc/config/s390/constraints.md | |
| parent | 674a959cd5eac469b63f9e64ab5d11890750451f (diff) | |
| download | gcc-708c0910a8f5bf48ec9ad54456dca3fc73360631.zip gcc-708c0910a8f5bf48ec9ad54456dca3fc73360631.tar.gz gcc-708c0910a8f5bf48ec9ad54456dca3fc73360631.tar.bz2 | |
S/390: Use define_subst for the setmem patterns.
While trying to get rid of the Y constraint in the setmem patterns I
noticed that for these patterns it isn't even a problem since these
always only use the constraint with a Pmode match_operand. But while
being at it I've tried to fold some of the patterns a bit.
gcc/ChangeLog:
2016-03-01 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/constraints.md ("jm8"): New constraint.
* config/s390/predicates.md ("const_int_8bitset_operand"): New predicate.
* config/s390/s390.md ("*setmem_long", "*setmem_long_and"): Merge
into ...
("*setmem_long<setmem_and>"): New pattern.
("*setmem_long_31z", "*setmem_long_and_31z"): Merge
into ...
("*setmem_long_31z<setmem_and>"): New pattern.
* config/s390/subst.md ("setmem_31z_subst", "setmem_and_subst"):
New substitution rules with the required attributes.
From-SVN: r233848
Diffstat (limited to 'gcc/config/s390/constraints.md')
| -rw-r--r-- | gcc/config/s390/constraints.md | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/config/s390/constraints.md b/gcc/config/s390/constraints.md index 60a7edf..6eeaa98 100644 --- a/gcc/config/s390/constraints.md +++ b/gcc/config/s390/constraints.md @@ -37,6 +37,7 @@ ;; jKK: constant vector with all elements having the same value and ;; matching K constraint ;; jm6: An integer operand with the lowest order 6 bits all ones. +;; jm8: An integer operand with the lowest order 8 bits all ones. ;; t -- Access registers 36 and 37. ;; v -- Vector registers v0-v31. ;; C -- A signed 8-bit constant (-128..127) @@ -420,6 +421,10 @@ "@internal An integer operand with the lowest order 6 bits all ones." (match_operand 0 "const_int_6bitset_operand")) +(define_constraint "jm8" + "@internal An integer operand with the lowest order 8 bits all ones." + (match_operand 0 "const_int_8bitset_operand")) + ;; ;; Memory constraints follow. ;; |