- // On Thumb, for the moment, we can only do this to functions defined in this
- // compilation, or to indirect calls. A Thumb B to an ARM function is not
- // easily fixed up in the linker, unlike BL.
- if (Subtarget->isThumb()) {
- if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
+ // FIXME: Completely disable sibcal for Thumb1 since Thumb1RegisterInfo::
+ // emitEpilogue is not ready for them.
+ if (Subtarget->isThumb1Only())
+ return false;
+
+ if (isa<ExternalSymbolSDNode>(Callee))
+ return false;
+
+ if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) {
+ if (Subtarget->isThumb1Only())
+ return false;
+
+ // On Thumb, for the moment, we can only do this to functions defined in this
+ // compilation, or to indirect calls. A Thumb B to an ARM function is not
+ // easily fixed up in the linker, unlike BL.
+ if (Subtarget->isThumb()) {