diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index c7990ba5d55aab..921c7793a6b29f 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -1260,6 +1260,7 @@ def : ProcessorModel<"x86-64", SandyBridgeModel, [
   FeatureNOPL,
   Feature64Bit,
   FeatureSlow3OpsLEA,
+  FeatureSlowDivide64,
   FeatureSlowIncDec,
   FeatureMacroFusion,
   FeatureInsertVZEROUPPER
diff --git a/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll b/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
index 75a00dd03a3120..8369a44dcbad2d 100644
--- a/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
+++ b/llvm/test/CodeGen/X86/bypass-slow-division-tune.ll
@@ -66,9 +66,20 @@ define i64 @div64(i64 %a, i64 %b) {
 ; X64-LABEL: div64:
 ; X64:       # %bb.0: # %entry
 ; X64-NEXT:    movq %rdi, %rax
+; X64-NEXT:    movq %rdi, %rcx
+; X64-NEXT:    orq %rsi, %rcx
+; X64-NEXT:    shrq $32, %rcx
+; X64-NEXT:    je .LBB1_1
+; X64-NEXT:  # %bb.2:
 ; X64-NEXT:    cqto
 ; X64-NEXT:    idivq %rsi
 ; X64-NEXT:    retq
+; X64-NEXT:  .LBB1_1:
+; X64-NEXT:    # kill: def $eax killed $eax killed $rax
+; X64-NEXT:    xorl %edx, %edx
+; X64-NEXT:    divl %esi
+; X64-NEXT:    # kill: def $eax killed $eax def $rax
+; X64-NEXT:    retq
 ;
 ; SLM-LABEL: div64:
 ; SLM:       # %bb.0: # %entry
@@ -178,9 +189,20 @@ define i64 @div64_hugews(i64 %a, i64 %b) {
 ; X64-LABEL: div64_hugews:
 ; X64:       # %bb.0:
 ; X64-NEXT:    movq %rdi, %rax
+; X64-NEXT:    movq %rdi, %rcx
+; X64-NEXT:    orq %rsi, %rcx
+; X64-NEXT:    shrq $32, %rcx
+; X64-NEXT:    je .LBB4_1
+; X64-NEXT:  # %bb.2:
 ; X64-NEXT:    cqto
 ; X64-NEXT:    idivq %rsi
 ; X64-NEXT:    retq
+; X64-NEXT:  .LBB4_1:
+; X64-NEXT:    # kill: def $eax killed $eax killed $rax
+; X64-NEXT:    xorl %edx, %edx
+; X64-NEXT:    divl %esi
+; X64-NEXT:    # kill: def $eax killed $eax def $rax
+; X64-NEXT:    retq
 ;
 ; SLM-LABEL: div64_hugews:
 ; SLM:       # %bb.0: