[flang][cuda] Relax assumed size check on object with device attribute

[clementval]

Assumed size arrays are apparently allowed with attribute device.

[llvmbot]

@llvm/pr-subscribers-flang-semantics

Author: Valentin Clement (バレンタイン クレメン) (clementval)

Changes

Assumed size arrays are apparently allowed with attribute device.

---

Full diff: https://github.com/llvm/llvm-project/pull/89466.diff

2 Files Affected:

• (modified) flang/lib/Semantics/check-declarations.cpp (-5)
• (modified) flang/test/Semantics/cuf03.cuf (+1-2)

diff --git a/flang/lib/Semantics/check-declarations.cpp b/flang/lib/Semantics/check-declarations.cpp
index 875929e90fdd31..c11617599b1986 100644
--- a/flang/lib/Semantics/check-declarations.cpp
+++ b/flang/lib/Semantics/check-declarations.cpp
@@ -948,11 +948,6 @@ void CheckHelper::CheckObjectEntity(
             "Component '%s' with ATTRIBUTES(DEVICE) must also be allocatable"_err_en_US,
             symbol.name());
       }
-      if (IsAssumedSizeArray(symbol)) {
-        messages_.Say(
-            "Object '%s' with ATTRIBUTES(DEVICE) may not be assumed size"_err_en_US,
-            symbol.name());
-      }
       break;
     case common::CUDADataAttr::Managed:
       if (!IsAutomatic(symbol) && !IsAllocatable(symbol) &&
diff --git a/flang/test/Semantics/cuf03.cuf b/flang/test/Semantics/cuf03.cuf
index 8decb8dcaa0f47..b6f9b80586a8f4 100644
--- a/flang/test/Semantics/cuf03.cuf
+++ b/flang/test/Semantics/cuf03.cuf
@@ -60,8 +60,7 @@ module m
  contains
   attributes(device) subroutine devsubr(n,da)
     integer, intent(in) :: n
-    !ERROR: Object 'da' with ATTRIBUTES(DEVICE) may not be assumed size
-    real, device :: da(*)
+    real, device :: da(*) ! ok
     real, managed :: ma(n) ! ok
     !WARNING: Pointer 'dp' may not be associated in a device subprogram
     real, device, pointer :: dp