From: Andreas Krebbel Date: Tue, 25 Apr 2017 07:41:41 +0000 (+0000) Subject: S/390: PR79895: Fix TImode constant handling X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=3cb9ee2f9c10a04a7498be3279897b46669c61dc;p=gcc.git 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 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 PR target/79895 * gcc.target/s390/pr79895.c: New test. From-SVN: r247133 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c70d790dc5e..e9cefd918e4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,11 @@ +2017-04-25 Andreas Krebbel + + 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 PR target/80080 diff --git a/gcc/config/s390/predicates.md b/gcc/config/s390/predicates.md index 0c82efc01cd..34a7ea28455 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 8a700edab94..c9fd19aeb33 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 e4a9f0ed724..ffa5b4a604d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2017-04-25 Andreas Krebbel + + PR target/79895 + * gcc.target/s390/pr79895.c: New test. + 2017-04-25 Dominik Vogt 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 00000000000..02374e4b8a8 --- /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; +}