AArch64: put nonlazybind special handling behind a flag for now.

It's basically a terrible idea anyway but objc_msgSend gets emitted like that.
We can decide on a better way to deal with it in the unlikely event that anyone
actually uses it.

llvm-svn: 300474

1 files changed, 6 insertions, 1 deletions

diff --git a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
index e1815b7d3fa..042755bd36d 100644
--- a/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
+++ b/llvm/lib/Target/AArch64/AArch64Subtarget.cpp
@@ -35,6 +35,11 @@ static cl::opt<bool>
 UseAddressTopByteIgnored("aarch64-use-tbi", cl::desc("Assume that top byte of "
                          "an address is ignored"), cl::init(false), cl::Hidden);
 
+static cl::opt<bool>
+    UseNonLazyBind("aarch64-enable-nonlazybind",
+                   cl::desc("Call nonlazybind functions via direct GOT load"),
+                   cl::init(false), cl::Hidden);
+
 AArch64Subtarget &
 AArch64Subtarget::initializeSubtargetDependencies(StringRef FS,
                                                   StringRef CPUString) {
@@ -165,7 +170,7 @@ unsigned char AArch64Subtarget::classifyGlobalFunctionReference(
 
   // NonLazyBind goes via GOT unless we know it's available locally.
   auto *F = dyn_cast<Function>(GV);
-  if (F && F->hasFnAttribute(Attribute::NonLazyBind) &&
+  if (UseNonLazyBind && F && F->hasFnAttribute(Attribute::NonLazyBind) &&
       !TM.shouldAssumeDSOLocal(*GV->getParent(), GV))
     return AArch64II::MO_GOT;