[clang] [Clang] Support MSPropertyRefExpr as placement arg to new-expression (PR #75883)

[via cfe-commits]

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@@ -0,0 +1,52 @@
+// RUN: %clang_cc1 -emit-llvm -triple=x86_64-pc-win32 -fms-compatibility %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple=x86_64-pc-win32 -fms-compatibility -emit-pch -o %t %s
+// RUN: %clang_cc1 -emit-llvm -triple=x86_64-pc-win32 -fms-compatibility -include-pch %t -verify %s -o - | FileCheck %s
+// expected-no-diagnostics
+
+#ifndef HEADER
+#define HEADER
+
+struct S {
+  int GetX() { return 42; }
+  __declspec(property(get=GetX)) int x;
+
+  int GetY(int i, int j) { return i+j; }
+  __declspec(property(get=GetY)) int y[];
+
+  void* operator new(__SIZE_TYPE__, int);
+};
+
+template <typename T>
+struct TS {
+  T GetT() { return T(); }
+  __declspec(property(get=GetT)) T t;
+
+  T GetR(T i, T j) { return i+j; }
+  __declspec(property(get=GetR)) T r[];
+};
+
+// CHECK-LABEL: main
+int main(int argc, char **argv) {
+  S *s;
+  TS<double> *ts;
+
+  // CHECK: [[X:%.+]] = call noundef i32 @"?GetX at S@@QEAAHXZ"(ptr {{[^,]*}} %{{.+}})
+  // CHECK-NEXT: call noundef ptr @"??2S@@SAPEAX_KH at Z"(i64 noundef 1, i32 noundef [[X]])
+  new (s->x) S;
+
+  // CHECK: [[Y:%.+]] = call noundef i32 @"?GetY at S@@QEAAHHH at Z"(ptr {{[^,]*}} %{{.+}}, i32 noundef 1, i32 noundef 2)
+  // CHECK-NEXT: call noundef ptr @"??2S@@SAPEAX_KH at Z"(i64 noundef 1, i32 noundef [[Y]])
+  new ((s->y)[1][2]) S;
+
+  // CHECK: [[T:%.+]] = call noundef double @"?GetT@?$TS at N@@QEAANXZ"(ptr {{[^,]*}} %{{.+}})
+  // CHECK-NEXT: [[TI:%.+]] = fptosi double [[T]] to i32
+  // CHECK-NEXT: call noundef ptr @"??2S@@SAPEAX_KH at Z"(i64 noundef 1, i32 noundef [[TI]])
+  new (ts->t) S;
+
+  // CHECK: [[R:%.+]] = call noundef double @"?GetR@?$TS at N@@QEAANNN at Z"(ptr {{[^,]*}} %{{.+}}, double {{[^,]*}}, double {{[^,]*}})
+  // CHECK-NEXT: [[RI:%.+]] = fptosi double [[R]] to i32
+  // CHECK-NEXT: call noundef ptr @"??2S@@SAPEAX_KH at Z"(i64 noundef 1, i32 noundef [[RI]])
+  new ((ts->r)[1][2]) S;
+}
+
+#endif
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Sirraide wrote:

Ah yes, I always forget about that

https://github.com/llvm/llvm-project/pull/75883