Index: include/llvm/MC/MCExpr.h
===================================================================
--- include/llvm/MC/MCExpr.h
+++ include/llvm/MC/MCExpr.h
@@ -293,6 +293,8 @@
     VK_AMDGPU_REL32_LO,      // symbol@rel32@lo
     VK_AMDGPU_REL32_HI,      // symbol@rel32@hi
     VK_AMDGPU_REL64,         // symbol@rel64
+    VK_AMDGPU_ABS32_LO,      // symbol@abs32@lo
+    VK_AMDGPU_ABS32_HI,      // symbol@abs32@hi
 
     VK_TPREL,
     VK_DTPREL
Index: lib/MC/MCExpr.cpp
===================================================================
--- lib/MC/MCExpr.cpp
+++ lib/MC/MCExpr.cpp
@@ -310,6 +310,8 @@
   case VK_AMDGPU_REL32_LO: return "rel32@lo";
   case VK_AMDGPU_REL32_HI: return "rel32@hi";
   case VK_AMDGPU_REL64: return "rel64";
+  case VK_AMDGPU_ABS32_LO: return "abs32@lo";
+  case VK_AMDGPU_ABS32_HI: return "abs32@hi";
   }
   llvm_unreachable("Invalid variant kind");
 }
@@ -425,6 +427,8 @@
     .Case("rel32@lo", VK_AMDGPU_REL32_LO)
     .Case("rel32@hi", VK_AMDGPU_REL32_HI)
     .Case("rel64", VK_AMDGPU_REL64)
+    .Case("abs32@lo", VK_AMDGPU_ABS32_LO)
+    .Case("abs32@hi", VK_AMDGPU_ABS32_HI)
     .Default(VK_Invalid);
 }
 
Index: lib/Target/AMDGPU/AMDGPUMCInstLower.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUMCInstLower.cpp
+++ lib/Target/AMDGPU/AMDGPUMCInstLower.cpp
@@ -90,6 +90,10 @@
     return MCSymbolRefExpr::VK_AMDGPU_REL32_LO;
   case SIInstrInfo::MO_REL32_HI:
     return MCSymbolRefExpr::VK_AMDGPU_REL32_HI;
+  case SIInstrInfo::MO_ABS32_LO:
+    return MCSymbolRefExpr::VK_AMDGPU_ABS32_LO;
+  case SIInstrInfo::MO_ABS32_HI:
+    return MCSymbolRefExpr::VK_AMDGPU_ABS32_HI;
   }
 }
 
@@ -146,10 +150,13 @@
     SmallString<128> SymbolName;
     AP.getNameWithPrefix(SymbolName, GV);
     MCSymbol *Sym = Ctx.getOrCreateSymbol(SymbolName);
-    const MCExpr *SymExpr =
+    const MCExpr *Expr =
       MCSymbolRefExpr::create(Sym, getVariantKind(MO.getTargetFlags()),Ctx);
-    const MCExpr *Expr = MCBinaryExpr::createAdd(SymExpr,
-      MCConstantExpr::create(MO.getOffset(), Ctx), Ctx);
+    int64_t Offset = MO.getOffset();
+    if (Offset != 0) {
+      Expr = MCBinaryExpr::createAdd(Expr,
+                                     MCConstantExpr::create(Offset, Ctx), Ctx);
+    }
     MCOp = MCOperand::createExpr(Expr);
     return true;
   }
Index: lib/Target/AMDGPU/MCTargetDesc/SIMCCodeEmitter.cpp
===================================================================
--- lib/Target/AMDGPU/MCTargetDesc/SIMCCodeEmitter.cpp
+++ lib/Target/AMDGPU/MCTargetDesc/SIMCCodeEmitter.cpp
@@ -375,8 +375,14 @@
 
 static bool needsPCRel(const MCExpr *Expr) {
   switch (Expr->getKind()) {
-  case MCExpr::SymbolRef:
+  case MCExpr::SymbolRef: {
+    auto *SE = cast<MCSymbolRefExpr>(Expr);
+    MCSymbolRefExpr::VariantKind Kind = SE->getKind();
+    if (Kind == MCSymbolRefExpr::VK_AMDGPU_ABS32_LO ||
+        Kind == MCSymbolRefExpr::VK_AMDGPU_ABS32_HI)
+      return false;
     return true;
+  }
   case MCExpr::Binary: {
     auto *BE = cast<MCBinaryExpr>(Expr);
     if (BE->getOpcode() == MCBinaryExpr::Sub)
Index: lib/Target/AMDGPU/SIInstrInfo.h
===================================================================
--- lib/Target/AMDGPU/SIInstrInfo.h
+++ lib/Target/AMDGPU/SIInstrInfo.h
@@ -157,7 +157,9 @@
     MO_REL32 = 4,
     MO_REL32_LO = 4,
     // MO_REL32_HI -> symbol@rel32@hi -> R_AMDGPU_REL32_HI.
-    MO_REL32_HI = 5
+    MO_REL32_HI = 5,
+    MO_ABS32_LO = 6,
+    MO_ABS32_HI = 7,
   };
 
   explicit SIInstrInfo(const GCNSubtarget &ST);
Index: lib/Target/AMDGPU/SIInstrInfo.cpp
===================================================================
--- lib/Target/AMDGPU/SIInstrInfo.cpp
+++ lib/Target/AMDGPU/SIInstrInfo.cpp
@@ -5533,7 +5533,9 @@
     { MO_GOTPCREL32_LO, "amdgpu-gotprel32-lo" },
     { MO_GOTPCREL32_HI, "amdgpu-gotprel32-hi" },
     { MO_REL32_LO, "amdgpu-rel32-lo" },
-    { MO_REL32_HI, "amdgpu-rel32-hi" }
+    { MO_REL32_HI, "amdgpu-rel32-hi" },
+    { MO_ABS32_LO, "amdgpu-abs32-lo" },
+    { MO_ABS32_HI, "amdgpu-abs32-hi" },
   };
 
   return makeArrayRef(TargetFlags);