AutoNormalizeEnum;
def fno_math_builtin : Flag<["-"], "fno-math-builtin">,
HelpText<"Disable implicit builtin knowledge of math functions">;
+def fuse_ctor_homing: Flag<["-"], "fuse-ctor-homing">,
+ HelpText<"Use constructor homing if we are using limited debug info already">;
}
def disable_llvm_verifier : Flag<["-"], "disable-llvm-verifier">,
else
Opts.setDebugInfo(static_cast<codegenoptions::DebugInfoKind>(Val));
}
+ // If -fuse-ctor-homing is set and limited debug info is already on, then use
+ // constructor homing.
+ if (Arg *A = Args.getLastArg(OPT_fuse_ctor_homing))
+ if (Opts.getDebugInfo() == codegenoptions::LimitedDebugInfo)
+ Opts.setDebugInfo(codegenoptions::DebugInfoConstructor);
+
if (Arg *A = Args.getLastArg(OPT_debugger_tuning_EQ)) {
unsigned Val = llvm::StringSwitch<unsigned>(A->getValue())
.Case("gdb", unsigned(llvm::DebuggerKind::GDB))
--- /dev/null
+// RUN: %clang -cc1 -debug-info-kind=constructor -emit-llvm %s -o - \
+// RUN: | FileCheck %s -check-prefix=CTOR_HOMING
+// RUN: %clang -cc1 -debug-info-kind=limited -fuse-ctor-homing -emit-llvm %s -o - \
+// RUN: | FileCheck %s -check-prefix=CTOR_HOMING
+// RUN: %clang -cc1 -debug-info-kind=standalone -fuse-ctor-homing -emit-llvm %s -o - \
+// RUN: | FileCheck %s -check-prefix=FULL_DEBUG
+// RUN: %clang -cc1 -debug-info-kind=line-tables-only -fuse-ctor-homing -emit-llvm %s -o - \
+// RUN: | FileCheck %s -check-prefix=NO_DEBUG
+// RUN: %clang -cc1 -fuse-ctor-homing -emit-llvm %s -o - \
+// RUN: | FileCheck %s -check-prefix=NO_DEBUG
+
+// This tests that the -fuse-ctor-homing is only used if limited debug info would have
+// been used otherwise.
+
+// CTOR_HOMING: !DICompositeType(tag: DW_TAG_structure_type, name: "A"{{.*}}flags: DIFlagFwdDecl
+// FULL_DEBUG: !DICompositeType(tag: DW_TAG_structure_type, name: "A"{{.*}}DIFlagTypePassByValue
+// NO_DEBUG-NOT: !DICompositeType(tag: DW_TAG_structure_type, name: "A"
+struct A {
+ A();
+} TestA;