def fno_pic : Flag<["-"], "fno-pic">, Group<f_Group>;
def fpie : Flag<["-"], "fpie">, Group<f_Group>;
def fno_pie : Flag<["-"], "fno-pie">, Group<f_Group>;
+def fplt : Flag<["-"], "fplt">, Group<f_Group>, Flags<[CC1Option]>,
+ HelpText<"Use the PLT to make function calls">;
+def fno_plt : Flag<["-"], "fno-plt">, Group<f_Group>, Flags<[CC1Option]>,
+ HelpText<"Do not use the PLT to make function calls">;
def fropi : Flag<["-"], "fropi">, Group<f_Group>;
def fno_ropi : Flag<["-"], "fno-ropi">, Group<f_Group>;
def frwpi : Flag<["-"], "frwpi">, Group<f_Group>;
/// Whether to emit .debug_gnu_pubnames section instead of .debug_pubnames.
CODEGENOPT(GnuPubnames, 1, 0)
+CODEGENOPT(NoPLT, 1, 0)
+
#undef CODEGENOPT
#undef ENUM_CODEGENOPT
#undef VALUE_CODEGENOPT
!(TargetDecl && TargetDecl->hasAttr<NoSplitStackAttr>()))
FuncAttrs.addAttribute("split-stack");
+ // Add NonLazyBind attribute to function declarations when -fno-plt
+ // is used.
+ if (TargetDecl && CodeGenOpts.NoPLT) {
+ if (auto *Fn = dyn_cast<FunctionDecl>(TargetDecl)) {
+ if (!Fn->isDefined() && !AttrOnCallSite) {
+ FuncAttrs.addAttribute(llvm::Attribute::NonLazyBind);
+ }
+ }
+ }
+
if (!AttrOnCallSite) {
bool DisableTailCalls =
CodeGenOpts.DisableTailCalls ||
CmdArgs.push_back("-mpie-copy-relocations");
}
+ if (Args.hasFlag(options::OPT_fno_plt, options::OPT_fplt, false)) {
+ CmdArgs.push_back("-fno-plt");
+ }
+
// -fhosted is default.
// TODO: Audit uses of KernelOrKext and see where it'd be more appropriate to
// use Freestanding.
Args.hasArg(OPT_mincremental_linker_compatible);
Opts.PIECopyRelocations =
Args.hasArg(OPT_mpie_copy_relocations);
+ Opts.NoPLT = Args.hasArg(OPT_fno_plt);
Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
Opts.SaveTempLabels = Args.hasArg(OPT_msave_temp_labels);
Opts.NoDwarfDirectoryAsm = Args.hasArg(OPT_fno_dwarf_directory_asm);
--- /dev/null
+// RUN: %clang_cc1 -emit-llvm -fno-plt %s -o - | FileCheck %s -check-prefix=CHECK-NOPLT
+
+// CHECK-NOPLT: Function Attrs: nonlazybind
+// CHECK-NOPLT-NEXT: declare i32 @foo
+int foo();
+
+int bar() {
+ return foo();
+}