diff --git a/clang/lib/Sema/TreeTransform.h b/clang/lib/Sema/TreeTransform.h --- a/clang/lib/Sema/TreeTransform.h +++ b/clang/lib/Sema/TreeTransform.h @@ -3840,8 +3840,10 @@ if (auto *FE = dyn_cast(Init)) Init = FE->getSubExpr(); - if (auto *AIL = dyn_cast(Init)) - Init = AIL->getCommonExpr(); + if (auto *AIL = dyn_cast(Init)) { + OpaqueValueExpr *OVE = AIL->getCommonExpr(); + Init = OVE->getSourceExpr(); + } if (MaterializeTemporaryExpr *MTE = dyn_cast(Init)) Init = MTE->getSubExpr(); diff --git a/clang/test/CodeGenCXX/pr45964-decomp-transform.cpp b/clang/test/CodeGenCXX/pr45964-decomp-transform.cpp new file mode 100644 --- /dev/null +++ b/clang/test/CodeGenCXX/pr45964-decomp-transform.cpp @@ -0,0 +1,27 @@ +// RUN: %clang_cc1 -std=c++17 -triple x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s + +int a[1]; +// CHECK: @a = global [1 x i32] zeroinitializer +template +void test_transform() { + auto [b] = a; +} +void (*d)(){test_transform<0>}; +// CHECK-LABEL: define {{.*}} @_Z14test_transformILi0EEvv +// CHECK: [[ENTRY:.*]]: +// CHECK-NEXT: [[ARR:%.*]] = alloca [1 x i32] +// CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* [[ARR]], i64 0, i64 0 +// CHECK-NEXT: br label %[[BODY:.*]] +// CHECK-EMPTY: +// CHECK-NEXT: [[BODY]]: +// CHECK-NEXT: [[CUR:%.*]] = phi i64 [ 0, %[[ENTRY]] ], [ [[NEXT:%.*]], %[[BODY]] ] +// CHECK-NEXT: [[DEST:%.*]] = getelementptr inbounds i32, i32* [[BEGIN]], i64 [[CUR]] +// CHECK-NEXT: [[SRC:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* @a, i64 0, i64 [[CUR]] +// CHECK-NEXT: [[X:%.*]] = load i32, i32* [[SRC]] +// CHECK-NEXT: store i32 [[X]], i32* [[DEST]] +// CHECK-NEXT: [[NEXT]] = add nuw i64 [[CUR]], 1 +// CHECK-NEXT: [[EQ:%.*]] = icmp eq i64 [[NEXT]], 1 +// CHECK-NEXT: br i1 [[EQ]], label %[[FIN:.*]], label %[[BODY]] +// CHECK-EMPTY: +// CHECK-NEXT: [[FIN]]: +// CHECK-NEXT: ret void