vendor/llvm/llvm-release_39-r276489

1 files changed, 15 insertions, 1 deletions

diff --git a/lib/Target/SystemZ/SystemZRegisterInfo.cpp b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
index 6fd24e3df625..b5e5fd4bfc4f 100644
--- a/lib/Target/SystemZ/SystemZRegisterInfo.cpp
+++ b/lib/Target/SystemZ/SystemZRegisterInfo.cpp
@@ -24,12 +24,20 @@ SystemZRegisterInfo::SystemZRegisterInfo()
 
 const MCPhysReg *
 SystemZRegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const {
+  if (MF->getSubtarget().getTargetLowering()->supportSwiftError() &&
+      MF->getFunction()->getAttributes().hasAttrSomewhere(
+          Attribute::SwiftError))
+    return CSR_SystemZ_SwiftError_SaveList;
   return CSR_SystemZ_SaveList;
 }
 
 const uint32_t *
 SystemZRegisterInfo::getCallPreservedMask(const MachineFunction &MF,
                                           CallingConv::ID CC) const {
+  if (MF.getSubtarget().getTargetLowering()->supportSwiftError() &&
+      MF.getFunction()->getAttributes().hasAttrSomewhere(
+          Attribute::SwiftError))
+    return CSR_SystemZ_SwiftError_RegMask;
   return CSR_SystemZ_RegMask;
 }
 
@@ -84,8 +92,14 @@ SystemZRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MI,
   // accepts the offset exists.
   unsigned Opcode = MI->getOpcode();
   unsigned OpcodeForOffset = TII->getOpcodeForOffset(Opcode, Offset);
-  if (OpcodeForOffset)
+  if (OpcodeForOffset) {
+    if (OpcodeForOffset == SystemZ::LE &&
+        MF.getSubtarget<SystemZSubtarget>().hasVector()) {
+      // If LE is ok for offset, use LDE instead on z13.
+      OpcodeForOffset = SystemZ::LDE32;
+    }
     MI->getOperand(FIOperandNum).ChangeToRegister(BasePtr, false);
+  }
   else {
     // Create an anchor point that is in range.  Start at 0xffff so that
     // can use LLILH to load the immediate.