[flang] [llvm] [mlir] [flang][OpenMP] Enable tiling (PR #143715)

[Jan Leyonberg via llvm-commits]

================
@@ -0,0 +1,30 @@
+! This test checks lowering of OpenMP DO Directive(Worksharing) with collapse.
+
+! RUN: bbc -fopenmp -fopenmp-version=51 -emit-hlfir %s -o - | FileCheck %s
+
+!CHECK-LABEL:   func.func @_QQmain() attributes {fir.bindc_name = "wsloop_tile"} {
+program wsloop_tile
+  integer :: i, j, k
+  integer :: a, b, c
+  integer :: x
+
+  a=30
+  b=20
+  c=50
+  x=0
+
+  !CHECK: omp.loop_nest
+  !CHECK-SAME: tiles(2, 5, 10)
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jsjodin wrote:

No problem, I added checks so that collapse(N) or tiles(1..N) makes sure that N is not greater than the number of loops in the omp.loop_nest op. It doesn't take into account the interaction between tiling and collapse, but we could add this also.

https://github.com/llvm/llvm-project/pull/143715