[SystemZ] Support execution hint instructions

This adds assembler support for the instructions provided by the
execution-hint facility (NIAI and BP(R)P).  This required adding
support for the new relocation types for 12-bit and 24-bit PC-
relative offsets used by the BP(R)P instructions.

llvm-svn: 288031

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCObjectWriter.cpp b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCObjectWriter.cpp
index 368c95f7bac..43a96e84289 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCObjectWriter.cpp
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCObjectWriter.cpp
@@ -53,7 +53,9 @@ static unsigned getPCRelReloc(unsigned Kind) {
   case FK_Data_2:                return ELF::R_390_PC16;
   case FK_Data_4:                return ELF::R_390_PC32;
   case FK_Data_8:                return ELF::R_390_PC64;
+  case SystemZ::FK_390_PC12DBL:  return ELF::R_390_PC12DBL;
   case SystemZ::FK_390_PC16DBL:  return ELF::R_390_PC16DBL;
+  case SystemZ::FK_390_PC24DBL:  return ELF::R_390_PC24DBL;
   case SystemZ::FK_390_PC32DBL:  return ELF::R_390_PC32DBL;
   }
   llvm_unreachable("Unsupported PC-relative address");
@@ -100,7 +102,9 @@ static unsigned getTLSGDReloc(unsigned Kind) {
 // Return the PLT relocation counterpart of MCFixupKind Kind.
 static unsigned getPLTReloc(unsigned Kind) {
   switch (Kind) {
+  case SystemZ::FK_390_PC12DBL: return ELF::R_390_PLT12DBL;
   case SystemZ::FK_390_PC16DBL: return ELF::R_390_PLT16DBL;
+  case SystemZ::FK_390_PC24DBL: return ELF::R_390_PLT24DBL;
   case SystemZ::FK_390_PC32DBL: return ELF::R_390_PLT32DBL;
   }
   llvm_unreachable("Unsupported absolute address");