[Sparc] Use %r_disp32 for pc_rel entries in FDE as well.

This makes MCAsmInfo::getExprForFDESymbol() a virtual function and overrides it in SparcMCAsmInfo.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200376 91177308-0d34-0410-b5e6-96231b3b80d8

Author: vegovin

include/llvm/MC/MCAsmInfo.h

@@ -364,7 +364,7 @@ namespace llvm {
                                 unsigned Encoding,
                                 MCStreamer &Streamer) const;
 
-    const MCExpr *
+    virtual const MCExpr *
     getExprForFDESymbol(const MCSymbol *Sym,
                         unsigned Encoding,
                         MCStreamer &Streamer) const;

lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp

@@ -56,3 +56,15 @@ SparcELFMCAsmInfo::getExprForPersonalitySymbol(const MCSymbol *Sym,
 
   return MCAsmInfo::getExprForPersonalitySymbol(Sym, Encoding, Streamer);
 }
+
+const MCExpr*
+SparcELFMCAsmInfo::getExprForFDESymbol(const MCSymbol *Sym,
+                                       unsigned Encoding,
+                                       MCStreamer &Streamer) const {
+  if (Encoding & dwarf::DW_EH_PE_pcrel) {
+    MCContext &Ctx = Streamer.getContext();
+    return SparcMCExpr::Create(SparcMCExpr::VK_Sparc_R_DISP32,
+                               MCSymbolRefExpr::Create(Sym, Ctx), Ctx);
+  }
+  return MCAsmInfo::getExprForFDESymbol(Sym, Encoding, Streamer);
+}

lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.h

@@ -26,6 +26,10 @@ class SparcELFMCAsmInfo : public MCAsmInfoELF {
   virtual const MCExpr* getExprForPersonalitySymbol(const MCSymbol *Sym,
                                                     unsigned Encoding,
                                                     MCStreamer &Streamer) const;
+  virtual const MCExpr* getExprForFDESymbol(const MCSymbol *Sym,
+                                            unsigned Encoding,
+                                            MCStreamer &Streamer) const;
+
 };
 
 } // namespace llvm

test/CodeGen/SPARC/exception.ll

@@ -57,6 +57,7 @@
 ; V8PIC_NOCFI:        .section .eh_frame
 ; V8PIC_NOCFI-NOT:    .section
 ; V8PIC_NOCFI:        .word %r_disp32(DW.ref.__gxx_personality_v0)
+; V8PIC_NOCFI:        .word %r_disp32(.Ltmp{{.+}}) ! FDE initial location
 
 
 ; V9ABS-LABEL: main:
@@ -94,6 +95,7 @@
 ; V9PIC_NOCFI:        .section .eh_frame
 ; V9PIC_NOCFI-NOT:    .section
 ; V9PIC_NOCFI:        .word %r_disp32(DW.ref.__gxx_personality_v0)
+; V9PIC_NOCFI:        .word %r_disp32(.Ltmp{{.+}}) ! FDE initial location
 
 define i32 @main(i32 %argc, i8** nocapture readnone %argv) unnamed_addr #0 {
 entry: