diff --git a/lib/Target/X86/X86FrameLowering.cpp b/lib/Target/X86/X86FrameLowering.cpp
index 0d4db14..a8f9c43 100644
--- a/lib/Target/X86/X86FrameLowering.cpp
+++ b/lib/Target/X86/X86FrameLowering.cpp
@@ -92,7 +92,7 @@
           MFI.hasCopyImplyingStackAdjustment());
 }
 
-static unsigned getSUBriOpcode(unsigned IsLP64, int64_t Imm) {
+static unsigned getSUBriOpcode(bool IsLP64, int64_t Imm) {
   if (IsLP64) {
     if (isInt<8>(Imm))
       return X86::SUB64ri8;
@@ -104,7 +104,7 @@
   }
 }
 
-static unsigned getADDriOpcode(unsigned IsLP64, int64_t Imm) {
+static unsigned getADDriOpcode(bool IsLP64, int64_t Imm) {
   if (IsLP64) {
     if (isInt<8>(Imm))
       return X86::ADD64ri8;
@@ -116,12 +116,12 @@
   }
 }
 
-static unsigned getSUBrrOpcode(unsigned isLP64) {
-  return isLP64 ? X86::SUB64rr : X86::SUB32rr;
+static unsigned getSUBrrOpcode(bool IsLP64) {
+  return IsLP64 ? X86::SUB64rr : X86::SUB32rr;
 }
 
-static unsigned getADDrrOpcode(unsigned isLP64) {
-  return isLP64 ? X86::ADD64rr : X86::ADD32rr;
+static unsigned getADDrrOpcode(bool IsLP64) {
+  return IsLP64 ? X86::ADD64rr : X86::ADD32rr;
 }
 
 static unsigned getANDriOpcode(bool IsLP64, int64_t Imm) {
@@ -135,7 +135,7 @@
   return X86::AND32ri;
 }
 
-static unsigned getLEArOpcode(unsigned IsLP64) {
+static unsigned getLEArOpcode(bool IsLP64) {
   return IsLP64 ? X86::LEA64r : X86::LEA32r;
 }