[Flang][OpenMP] Do not default privatize symbols that are not variables #117886
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Fixes an issue where the compiler is trying to default privatize construct names. Fixes llvm#112572
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@llvm/pr-subscribers-flang-openmp Author: Kiran Chandramohan (kiranchandramohan) ChangesFixes an issue where the compiler is trying to default privatize construct names. Fixes #112572 Full diff: https://github.com/llvm/llvm-project/pull/117886.diff 2 Files Affected:
diff --git a/flang/lib/Semantics/resolve-directives.cpp b/flang/lib/Semantics/resolve-directives.cpp
index 80e238f3476ac8..59013619cc689d 100644
--- a/flang/lib/Semantics/resolve-directives.cpp
+++ b/flang/lib/Semantics/resolve-directives.cpp
@@ -2112,7 +2112,7 @@ void OmpAttributeVisitor::Post(const parser::OpenMPAllocatorsConstruct &x) {
static bool IsPrivatizable(const Symbol *sym) {
auto *misc{sym->detailsIf<MiscDetails>()};
- return !IsProcedure(*sym) && !IsNamedConstant(*sym) &&
+ return IsVariableName(*sym) && !IsProcedure(*sym) && !IsNamedConstant(*sym) &&
!semantics::IsAssumedSizeArray(
*sym) && /* OpenMP 5.2, 5.1.1: Assumed-size arrays are shared*/
!sym->owner().IsDerivedType() &&
diff --git a/flang/test/Semantics/OpenMP/critical_within_default.f90 b/flang/test/Semantics/OpenMP/critical_within_default.f90
new file mode 100644
index 00000000000000..dd972e6e529492
--- /dev/null
+++ b/flang/test/Semantics/OpenMP/critical_within_default.f90
@@ -0,0 +1,17 @@
+! RUN: %flang_fc1 -fopenmp -fdebug-dump-symbols %s | FileCheck %s
+! Test that we do not make a private copy of the critical name
+
+!CHECK: MainProgram scope: mn
+!CHECK-NEXT: j size=4 offset=0: ObjectEntity type: INTEGER(4)
+!CHECK-NEXT: OtherConstruct scope:
+!CHECK-NEXT: j (OmpPrivate): HostAssoc
+!CHECK-NEXT: k2 (OmpCriticalLock): Unknown
+program mn
+ integer :: j
+ j=2
+ !$omp parallel default(private)
+ !$omp critical(k2)
+ j=200
+ !$omp end critical(k2)
+ !$omp end parallel
+end
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@llvm/pr-subscribers-flang-semantics Author: Kiran Chandramohan (kiranchandramohan) ChangesFixes an issue where the compiler is trying to default privatize construct names. Fixes #112572 Full diff: https://github.com/llvm/llvm-project/pull/117886.diff 2 Files Affected:
diff --git a/flang/lib/Semantics/resolve-directives.cpp b/flang/lib/Semantics/resolve-directives.cpp
index 80e238f3476ac8..59013619cc689d 100644
--- a/flang/lib/Semantics/resolve-directives.cpp
+++ b/flang/lib/Semantics/resolve-directives.cpp
@@ -2112,7 +2112,7 @@ void OmpAttributeVisitor::Post(const parser::OpenMPAllocatorsConstruct &x) {
static bool IsPrivatizable(const Symbol *sym) {
auto *misc{sym->detailsIf<MiscDetails>()};
- return !IsProcedure(*sym) && !IsNamedConstant(*sym) &&
+ return IsVariableName(*sym) && !IsProcedure(*sym) && !IsNamedConstant(*sym) &&
!semantics::IsAssumedSizeArray(
*sym) && /* OpenMP 5.2, 5.1.1: Assumed-size arrays are shared*/
!sym->owner().IsDerivedType() &&
diff --git a/flang/test/Semantics/OpenMP/critical_within_default.f90 b/flang/test/Semantics/OpenMP/critical_within_default.f90
new file mode 100644
index 00000000000000..dd972e6e529492
--- /dev/null
+++ b/flang/test/Semantics/OpenMP/critical_within_default.f90
@@ -0,0 +1,17 @@
+! RUN: %flang_fc1 -fopenmp -fdebug-dump-symbols %s | FileCheck %s
+! Test that we do not make a private copy of the critical name
+
+!CHECK: MainProgram scope: mn
+!CHECK-NEXT: j size=4 offset=0: ObjectEntity type: INTEGER(4)
+!CHECK-NEXT: OtherConstruct scope:
+!CHECK-NEXT: j (OmpPrivate): HostAssoc
+!CHECK-NEXT: k2 (OmpCriticalLock): Unknown
+program mn
+ integer :: j
+ j=2
+ !$omp parallel default(private)
+ !$omp critical(k2)
+ j=200
+ !$omp end critical(k2)
+ !$omp end parallel
+end
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| @@ -2112,7 +2112,7 @@ void OmpAttributeVisitor::Post(const parser::OpenMPAllocatorsConstruct &x) { | |||
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| static bool IsPrivatizable(const Symbol *sym) { | |||
| auto *misc{sym->detailsIf<MiscDetails>()}; | |||
| return !IsProcedure(*sym) && !IsNamedConstant(*sym) && | |||
| return IsVariableName(*sym) && !IsProcedure(*sym) && !IsNamedConstant(*sym) && | |||
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This whole check can probably be simplified further in a separate patch.
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Right, it should be OK to remove at least !IsNamedConstant(*sym), probably !IsProcedure(*sym) too.
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I will update in a separate patch.
luporl
approved these changes
Nov 27, 2024
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Fixes an issue where the compiler is trying to default privatize construct names.
Fixes #112572