Index: llvm/trunk/include/llvm/Object/ELFObjectFile.h
===================================================================
--- llvm/trunk/include/llvm/Object/ELFObjectFile.h
+++ llvm/trunk/include/llvm/Object/ELFObjectFile.h
@@ -80,6 +80,8 @@
 
   SubtargetFeatures getARMFeatures() const;
 
+  SubtargetFeatures getRISCVFeatures() const;
+
   void setARMSubArch(Triple &TheTriple) const override;
 };
 
Index: llvm/trunk/lib/Object/ELFObjectFile.cpp
===================================================================
--- llvm/trunk/lib/Object/ELFObjectFile.cpp
+++ llvm/trunk/lib/Object/ELFObjectFile.cpp
@@ -238,12 +238,25 @@
   return Features;
 }
 
+SubtargetFeatures ELFObjectFileBase::getRISCVFeatures() const {
+  SubtargetFeatures Features;
+  unsigned PlatformFlags = getPlatformFlags();
+
+  if (PlatformFlags & ELF::EF_RISCV_RVC) {
+    Features.AddFeature("c");
+  }
+
+  return Features;
+}
+
 SubtargetFeatures ELFObjectFileBase::getFeatures() const {
   switch (getEMachine()) {
   case ELF::EM_MIPS:
     return getMIPSFeatures();
   case ELF::EM_ARM:
     return getARMFeatures();
+  case ELF::EM_RISCV:
+    return getRISCVFeatures();
   default:
     return SubtargetFeatures();
   }
Index: llvm/trunk/test/MC/RISCV/cnop.s
===================================================================
--- llvm/trunk/test/MC/RISCV/cnop.s
+++ llvm/trunk/test/MC/RISCV/cnop.s
@@ -1,5 +1,5 @@
 # RUN: llvm-mc -filetype=obj -triple riscv32 -mattr=+c < %s \
-# RUN:     | llvm-objdump -mattr=+c -d - | FileCheck -check-prefix=CHECK-INST %s
+# RUN:     | llvm-objdump -d - | FileCheck -check-prefix=CHECK-INST %s
 
 # alpha and main are 8 byte alignment
 # but the alpha function's size is 6
Index: llvm/trunk/test/MC/RISCV/fixups-compressed.s
===================================================================
--- llvm/trunk/test/MC/RISCV/fixups-compressed.s
+++ llvm/trunk/test/MC/RISCV/fixups-compressed.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc %s -triple riscv32 -mattr=+c -show-encoding \
 # RUN:     | FileCheck -check-prefix=CHECK-FIXUP %s
 # RUN: llvm-mc -triple riscv32 -filetype=obj -mattr=+c < %s \
-# RUN:     | llvm-objdump -mattr=+c -d - | FileCheck -check-prefix=CHECK-INSTR %s
+# RUN:     | llvm-objdump -d - | FileCheck -check-prefix=CHECK-INSTR %s
 
 .LBB0_2:
 # CHECK-FIXUP:   fixup A - offset: 0, value: .LBB0_2, kind: fixup_riscv_rvc_jump
Index: llvm/trunk/test/MC/RISCV/rv32c-only-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv32c-only-valid.s
+++ llvm/trunk/test/MC/RISCV/rv32c-only-valid.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc -triple=riscv32 -mattr=+c -riscv-no-aliases -show-encoding < %s \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple riscv32 -mattr=+c -riscv-no-aliases < %s \
-# RUN:     | llvm-objdump -mattr=+c -d - | FileCheck -check-prefix=CHECK-INST %s
+# RUN:     | llvm-objdump -d - | FileCheck -check-prefix=CHECK-INST %s
 # RUN: not llvm-mc -triple riscv32 \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
 # RUN:     | FileCheck -check-prefixes=CHECK-NO-EXT %s
Index: llvm/trunk/test/MC/RISCV/rv32c-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv32c-valid.s
+++ llvm/trunk/test/MC/RISCV/rv32c-valid.s
@@ -3,10 +3,10 @@
 # RUN: llvm-mc -triple=riscv64 -mattr=+c -riscv-no-aliases -show-encoding < %s \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple riscv32 -mattr=+c < %s \
-# RUN:     | llvm-objdump -mattr=+c -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple riscv64 -mattr=+c < %s \
-# RUN:     | llvm-objdump -mattr=+c -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 
 # TODO: more exhaustive testing of immediate encoding.
Index: llvm/trunk/test/MC/RISCV/rv32dc-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv32dc-valid.s
+++ llvm/trunk/test/MC/RISCV/rv32dc-valid.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc %s -triple=riscv32 -mattr=+c,+d -riscv-no-aliases -show-encoding \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+c,+d < %s \
-# RUN:     | llvm-objdump -mattr=+c,+d -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -mattr=+d -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 # RUN: not llvm-mc -triple riscv32 -mattr=+c\
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
Index: llvm/trunk/test/MC/RISCV/rv32fc-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv32fc-valid.s
+++ llvm/trunk/test/MC/RISCV/rv32fc-valid.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc %s -triple=riscv32 -mattr=+c,+f -riscv-no-aliases -show-encoding \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple=riscv32 -mattr=+c,+f < %s \
-# RUN:     | llvm-objdump -mattr=+c,+f -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -mattr=+f -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 # RUN: not llvm-mc -triple riscv32 -mattr=+c \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
Index: llvm/trunk/test/MC/RISCV/rv64c-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv64c-valid.s
+++ llvm/trunk/test/MC/RISCV/rv64c-valid.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc -triple=riscv64 -mattr=+c -riscv-no-aliases -show-encoding < %s \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple riscv64 -mattr=+c < %s \
-# RUN:     | llvm-objdump -mattr=+c -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 # RUN: not llvm-mc -triple riscv64 \
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \
Index: llvm/trunk/test/MC/RISCV/rv64dc-valid.s
===================================================================
--- llvm/trunk/test/MC/RISCV/rv64dc-valid.s
+++ llvm/trunk/test/MC/RISCV/rv64dc-valid.s
@@ -1,7 +1,7 @@
 # RUN: llvm-mc %s -triple=riscv64 -mattr=+c,+d -riscv-no-aliases -show-encoding \
 # RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
 # RUN: llvm-mc -filetype=obj -triple=riscv64 -mattr=+c,+d < %s \
-# RUN:     | llvm-objdump -mattr=+c,+d -riscv-no-aliases -d - \
+# RUN:     | llvm-objdump -mattr=+d -riscv-no-aliases -d - \
 # RUN:     | FileCheck -check-prefix=CHECK-INST %s
 # RUN: not llvm-mc -triple riscv64 -mattr=+c\
 # RUN:     -riscv-no-aliases -show-encoding < %s 2>&1 \