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[SYCL] Fix int-footer spec-const generation for deduced types. #3908

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Merged
merged 8 commits into from
Jun 11, 2021
Merged

[SYCL] Fix int-footer spec-const generation for deduced types. #3908

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e9ac411
[SYCL] Fix int-footer spec-const generation for deduced types.
Jun 9, 2021
501e1a5
Clang-format
Jun 9, 2021
baacc73
Do Alexey's feedback
Jun 10, 2021
aeb84e2
Fix build error, changed to 'set' but didn't change to 'insert'
Jun 10, 2021
031b8de
Remove some blank newlines added in the test
Jun 10, 2021
11684e8
Remove canonicalizer
Jun 10, 2021
05f379c
Fix build error, oops
Jun 10, 2021
bc7403d
Remove canonicalization no longer needed due to #3916
Jun 10, 2021
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14 changes: 13 additions & 1 deletion clang/lib/Sema/SemaSYCL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4852,7 +4852,6 @@ void SYCLIntegrationFooter::addVarDecl(const VarDecl *VD) {
// rest of this file, is called during Sema instead of after it. We will
// also have to filter out after deduction later.
QualType Ty = VD->getType().getCanonicalType();

if (!Ty->isUndeducedType())
return;
}
Expand Down Expand Up @@ -5024,11 +5023,24 @@ bool SYCLIntegrationFooter::emit(raw_ostream &OS) {
Policy.SuppressTypedefs = true;
Policy.SuppressUnwrittenScope = true;

llvm::SmallSet<const VarDecl *, 8> VisitedSpecConstants;

// Used to uniquely name the 'shim's as we generate the names in each
// anonymous namespace.
unsigned ShimCounter = 0;
for (const VarDecl *VD : SpecConstants) {
VD = VD->getCanonicalDecl();

// Skip if this isn't a SpecIdType. This can happen if it was a deduced
// type.
if (!Util::isSyclSpecIdType(VD->getType()))
continue;

// Skip if we've already visited this.
if (llvm::find(VisitedSpecConstants, VD) != VisitedSpecConstants.end())
continue;

VisitedSpecConstants.insert(VD);
std::string TopShim = EmitSpecIdShims(OS, ShimCounter, VD);
OS << "__SYCL_INLINE_NAMESPACE(cl) {\n";
OS << "namespace sycl {\n";
Expand Down
15 changes: 15 additions & 0 deletions clang/test/CodeGenSYCL/integration_footer.cpp
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Expand Up @@ -144,4 +144,19 @@ specialization_id<int> AnonNSSpecID;

} // namespace Foo

// make sure we don't emit a deduced type that isn't a spec constant.
enum SomeEnum { SE_A };
enum AnotherEnum : unsigned int { AE_A };

template<SomeEnum E> struct GetThing{};
template<> struct GetThing<SE_A>{
static constexpr auto thing = AE_A;
};

struct container {
static constexpr auto Thing = GetThing<SE_A>::thing;
};
// CHECK-NOT: ::GetThing
// CHECK-NOT: ::container::Thing

// CHECK: #include <CL/sycl/detail/spec_const_integration.hpp>