Implement 'large' PIC model
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76006 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZSubtarget.cpp b/lib/Target/SystemZ/SystemZSubtarget.cpp
index 9c3262e..18a8e16 100644
--- a/lib/Target/SystemZ/SystemZSubtarget.cpp
+++ b/lib/Target/SystemZ/SystemZSubtarget.cpp
@@ -14,6 +14,7 @@
#include "SystemZSubtarget.h"
#include "SystemZ.h"
#include "SystemZGenSubtarget.inc"
+#include "llvm/GlobalValue.h"
#include "llvm/Target/TargetMachine.h"
using namespace llvm;
@@ -26,3 +27,21 @@
// Parse features string.
ParseSubtargetFeatures(FS, CPU);
}
+
+/// True if accessing the GV requires an extra load.
+bool SystemZSubtarget::GVRequiresExtraLoad(const GlobalValue* GV,
+ const TargetMachine& TM,
+ bool isDirectCall) const {
+ if (TM.getRelocationModel() == Reloc::PIC_) {
+ // Extra load is needed for all externally visible.
+ if (isDirectCall)
+ return false;
+
+ if (GV->hasLocalLinkage() || GV->hasHiddenVisibility())
+ return false;
+
+ return true;
+ }
+
+ return false;
+}