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| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2017-04-25 07:41:41 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2017-04-25 07:41:41 +0000 |
| commit | 3cb9ee2f9c10a04a7498be3279897b46669c61dc (patch) | |
| tree | 68d8a15d09edb7899d14406a9af12510a5810f30 /gcc | |
| parent | 03db9ab59481e07de0f8b651e6cc5c0f7d26b330 (diff) | |
| download | gcc-3cb9ee2f9c10a04a7498be3279897b46669c61dc.zip gcc-3cb9ee2f9c10a04a7498be3279897b46669c61dc.tar.gz gcc-3cb9ee2f9c10a04a7498be3279897b46669c61dc.tar.bz2 | |
S/390: PR79895: Fix TImode constant handling
The P constraint letter is supposed to match every constant which is
acceptable during reload. However, constraints do not appear to be
able to handle const_wide_int yet. It works with predicates so the
alternative is modelled with a new predicate now.
gcc/ChangeLog:
2017-04-25 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/79895
* config/s390/predicates.md (reload_const_wide_int_operand): New
predicate.
* config/s390/s390.md ("movti"): Remove d/P alternative.
("movti_bigconst"): New pattern definition.
gcc/testsuite/ChangeLog:
2017-04-25 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
PR target/79895
* gcc.target/s390/pr79895.c: New test.
From-SVN: r247133
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/config/s390/predicates.md | 5 | ||||
| -rw-r--r-- | gcc/config/s390/s390.md | 13 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/s390/pr79895.c | 9 |
5 files changed, 38 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c70d790..e9cefd9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2017-04-25 Andreas Krebbel <krebbel@linux.vnet.ibm.com> + + PR target/79895 + * config/s390/predicates.md (reload_const_wide_int_operand): New + predicate. + * config/s390/s390.md ("movti"): Remove d/P alternative. + ("movti_bigconst"): New pattern definition. + 2017-04-25 Dominik Vogt <vogt@linux.vnet.ibm.com> PR target/80080 diff --git a/gcc/config/s390/predicates.md b/gcc/config/s390/predicates.md index 0c82efc..34a7ea2 100644 --- a/gcc/config/s390/predicates.md +++ b/gcc/config/s390/predicates.md @@ -199,6 +199,11 @@ (and (match_code "const_int") (match_test "INTVAL (op) <= 32767 && INTVAL (op) >= -32768")))) +(define_predicate "reload_const_wide_int_operand" + (and (match_code "const_wide_int") + (match_test "legitimate_reload_constant_p (op)"))) + + ;; operators -------------------------------------------------------------- ;; Return nonzero if OP is a valid comparison operator diff --git a/gcc/config/s390/s390.md b/gcc/config/s390/s390.md index 8a700ed..c9fd19a 100644 --- a/gcc/config/s390/s390.md +++ b/gcc/config/s390/s390.md @@ -1494,11 +1494,20 @@ ; movti instruction pattern(s). ; + +; Separate out the register pair alternative since constraints (P) are +; not able to deal with const_wide_int's. But predicates do. +(define_insn "*movti_bigconst" + [(set (match_operand:TI 0 "register_operand" "=d") + (match_operand:TI 1 "reload_const_wide_int_operand" ""))] + "TARGET_ZARCH" + "#") + ; FIXME: More constants are possible by enabling jxx, jyy constraints ; for TImode (use double-int for the calculations) (define_insn "movti" - [(set (match_operand:TI 0 "nonimmediate_operand" "=d,S,v, v, v,v,d,v,R, d,o") - (match_operand:TI 1 "general_operand" " S,d,v,j00,jm1,d,v,R,v,dPT,d"))] + [(set (match_operand:TI 0 "nonimmediate_operand" "=d,S,v, v, v,v,d,v,R, d,o") + (match_operand:TI 1 "general_operand" " S,d,v,j00,jm1,d,v,R,v,dT,d"))] "TARGET_ZARCH" "@ lmg\t%0,%N0,%S1 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e4a9f0e..ffa5b4a 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-04-25 Andreas Krebbel <krebbel@linux.vnet.ibm.com> + + PR target/79895 + * gcc.target/s390/pr79895.c: New test. + 2017-04-25 Dominik Vogt <vogt@linux.vnet.ibm.com> PR target/80080 diff --git a/gcc/testsuite/gcc.target/s390/pr79895.c b/gcc/testsuite/gcc.target/s390/pr79895.c new file mode 100644 index 0000000..02374e4 --- /dev/null +++ b/gcc/testsuite/gcc.target/s390/pr79895.c @@ -0,0 +1,9 @@ +/* { dg-do compile { target int128 } } */ +/* { dg-options "-O1 -mno-lra" } */ + +unsigned __int128 g; +void +foo () +{ + g = (unsigned __int128)1 << 127; +} |