Revert "Revert "For the dwarf expression code get the subtarget off of the current""

This reapplies r230990 without modifications.

llvm-svn: 231024

1 files changed, 6 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 56e8f11c16a..ce394a85f02 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -17,6 +17,7 @@
 #include "DwarfDebug.h"
 #include "DwarfExpression.h"
 #include "llvm/ADT/APFloat.h"
+#include "llvm/CodeGen/MachineFunction.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DIBuilder.h"
 #include "llvm/IR/DataLayout.h"
@@ -43,11 +44,11 @@ GenerateDwarfTypeUnits("generate-type-units", cl::Hidden,
                        cl::desc("Generate DWARF4 type units."),
                        cl::init(false));
 
-DIEDwarfExpression::DIEDwarfExpression(const AsmPrinter &AP,
-                                       DwarfUnit &DU, DIELoc &DIE)
-  : DwarfExpression(*AP.TM.getSubtargetImpl()->getRegisterInfo(),
-                    AP.getDwarfDebug()->getDwarfVersion()),
-    AP(AP), DU(DU), DIE(DIE) {}
+DIEDwarfExpression::DIEDwarfExpression(const AsmPrinter &AP, DwarfUnit &DU,
+                                       DIELoc &DIE)
+    : DwarfExpression(*AP.MF->getSubtarget().getRegisterInfo(),
+                      AP.getDwarfDebug()->getDwarfVersion()),
+      AP(AP), DU(DU), DIE(DIE) {}
 
 void DIEDwarfExpression::EmitOp(uint8_t Op, const char* Comment) {
   DU.addUInt(DIE, dwarf::DW_FORM_data1, Op);