[CIR][CIRGen] Add suppport for local typedefs (llvm#451)

The change is taken from original codegen.
eZWALT · Apr 17, 2024 · a41ddd1 · a41ddd1
1 parent 5bf8c1f
commit a41ddd1
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Showing 2 changed files with 16 additions and 1 deletion.
diff --git a/clang/lib/CIR/CodeGen/CIRGenDecl.cpp b/clang/lib/CIR/CodeGen/CIRGenDecl.cpp
@@ -831,7 831,12 @@ void CIRGenFunction::buildDecl(const Decl &D) {
 
  case Decl::Typedef: // typedef int X;
  case Decl::TypeAlias: { // using X = int; [C 0x]
- assert(0 && "Not implemented");
  QualType Ty = cast<TypedefNameDecl>(D).getUnderlyingType();
  if (auto *DI = getDebugInfo())
  assert(!UnimplementedFeature::generateDebugInfo());
  if (Ty->isVariablyModifiedType())
  buildVariablyModifiedType(Ty);
  return;
  }
  }
 }

diff --git a/clang/test/CIR/CodeGen/typedef.c b/clang/test/CIR/CodeGen/typedef.c
@@ -0,0 1,10 @@
 // RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir-enable -emit-cir %s -o - | FileCheck %s
 
 void local_typedef() {
  typedef struct {int a;} Struct;
  Struct s;
 }
 
 //CHECK: cir.func no_proto @local_typedef()
 //CHECK: {{.*}} = cir.alloca !ty_22Struct22, cir.ptr <!ty_22Struct22>, ["s"] {alignment = 4 : i64}
 //CHECK: cir.return