Same as for C/C++, albeit a tiny bit longer patch.
I don't know whether it makes sense to handle – in the long run – the
case of se.pre/se.post being nonempty – and, if so, how.
OK for mainline?
Tobias
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openmp: Map holds clause to IFN_ASSUME for Fortran
Same as r13-3107-g847f5addc4d07a2f3b95f5daa50ab4a64dfd957d did for C/C++.
Convert '!$omp assume holds(cond)' to IFN_ASSUME (cond).
gcc/fortran/
* trans-openmp.cc (gfc_trans_omp_assume): New.
(gfc_trans_omp_directive): Call it.
gcc/teststuite/
* gfortran.dg/gomp/assume-3.f90: New test.
gcc/fortran/trans-openmp.cc | 27 ++++++++++++++++-
gcc/testsuite/gfortran.dg/gomp/assume-3.f90 | 46 +++++++++++++++++++++++++++++
2 files changed, 72 insertions(+), 1 deletion(-)
diff --git a/gcc/fortran/trans-openmp.cc b/gcc/fortran/trans-openmp.cc
index 21053694f81..b82257258a7 100644
--- a/gcc/fortran/trans-openmp.cc
+++ b/gcc/fortran/trans-openmp.cc
@@ -4570,6 +4570,31 @@ gfc_trans_oacc_wait_directive (gfc_code *code)
static tree gfc_trans_omp_sections (gfc_code *, gfc_omp_clauses *);
static tree gfc_trans_omp_workshare (gfc_code *, gfc_omp_clauses *);
+static tree
+gfc_trans_omp_assume (gfc_code *code)
+{
+ stmtblock_t block;
+ gfc_init_block (&block);
+ gfc_omp_assumptions *assume = code->ext.omp_clauses->assume;
+ if (assume)
+ for (gfc_expr_list *el = assume->holds; el; el = el->next)
+ {
+ tree t;
+ gfc_se se;
+ gfc_init_se (&se, NULL);
+ gfc_conv_expr (&se, el->expr);
+ /* Avoid side effects. */
+ if (se.pre.head || se.post.head)
+ continue;
+ t = build_call_expr_internal_loc (gfc_get_location (&el->expr->where),
+ IFN_ASSUME, void_type_node, 1,
+ se.expr);
+ gfc_add_expr_to_block (&block, t);
+ }
+ gfc_add_expr_to_block (&block, gfc_trans_omp_code (code->block->next, true));
+ return gfc_finish_block (&block);
+}
+
static tree
gfc_trans_omp_atomic (gfc_code *code)
{
@@ -7488,7 +7513,7 @@ gfc_trans_omp_directive (gfc_code *code)
switch (code->op)
{
case EXEC_OMP_ASSUME:
- return gfc_trans_omp_code (code->block->next, true);
+ return gfc_trans_omp_assume (code);
case EXEC_OMP_ATOMIC:
return gfc_trans_omp_atomic (code);
case EXEC_OMP_BARRIER:
diff --git a/gcc/testsuite/gfortran.dg/gomp/assume-3.f90 b/gcc/testsuite/gfortran.dg/gomp/assume-3.f90
new file mode 100644
index 00000000000..e5deace306e
--- /dev/null
+++ b/gcc/testsuite/gfortran.dg/gomp/assume-3.f90
@@ -0,0 +1,46 @@
+! { dg-do compile }
+! { dg-options "-fopenmp -O2 -fdump-tree-optimized -fdump-tree-original" }
+
+! { dg-final { scan-tree-dump-times ".ASSUME \\(x == 42\\);" 1 "original" } }
+! { dg-final { scan-tree-dump-times ".ASSUME \\(x <= 41\\);" 1 "original" } }
+! { dg-final { scan-tree-dump-times ".ASSUME \\(y <= 6\\);" 1 "original" } }
+! { dg-final { scan-tree-dump-times ".ASSUME \\(y > 5\\);" 1 "original" } }
+
+! { dg-final { scan-tree-dump-times "return 42;" 3 "optimized" } }
+! { dg-final { scan-tree-dump-not "return -1;" "optimized" } }
+
+integer function foo (x)
+ implicit none
+ integer, value :: x
+ integer :: y
+ !$omp assume holds (x == 42)
+ y = x;
+ !$omp end assume
+ foo = y
+end
+
+integer function bar (x)
+ implicit none
+ integer, value :: x
+ !$omp assume holds (x < 42)
+ block
+ end block
+ if (x == 42) then
+ bar = -1
+ return
+ end if
+ bar = 42
+end
+
+integer function foobar (y)
+ implicit none
+ integer, value :: y
+ !$omp assume holds(y > 5) holds (y < 7)
+ block
+ if (y == 6) then
+ foobar = 42
+ return
+ end if
+ end block
+ foobar = -1
+end
