diff --git a/lib/MC/MCAsmInfo.cpp b/lib/MC/MCAsmInfo.cpp
index 41f27db6a0f..9767ee6c113 100644
--- a/lib/MC/MCAsmInfo.cpp
+++ b/lib/MC/MCAsmInfo.cpp
@@ -64,7 +64,7 @@ MCAsmInfo::MCAsmInfo() {
   // - Generic_GCC toolchains enable the integrated assembler on a per
   //   architecture basis.
   //   - The target subclasses for AArch64, ARM, and X86 handle these cases
-  UseIntegratedAssembler = false;
+  UseIntegratedAssembler = true;
   PreserveAsmComments = true;
 }
 
diff --git a/lib/MC/MCAsmInfoCOFF.cpp b/lib/MC/MCAsmInfoCOFF.cpp
index d9971028649..0b8781c61eb 100644
--- a/lib/MC/MCAsmInfoCOFF.cpp
+++ b/lib/MC/MCAsmInfoCOFF.cpp
@@ -36,8 +36,6 @@ MCAsmInfoCOFF::MCAsmInfoCOFF() {
   SupportsDebugInformation = true;
   NeedsDwarfSectionOffsetDirective = true;
 
-  UseIntegratedAssembler = true;
-
   // At least MSVC inline-asm does AShr.
   UseLogicalShr = false;
 
diff --git a/lib/MC/MCAsmInfoDarwin.cpp b/lib/MC/MCAsmInfoDarwin.cpp
index 62bc5b8c941..44b602984b8 100644
--- a/lib/MC/MCAsmInfoDarwin.cpp
+++ b/lib/MC/MCAsmInfoDarwin.cpp
@@ -91,7 +91,5 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() {
   HasAltEntry = true;
 
   DwarfUsesRelocationsAcrossSections = false;
-
-  UseIntegratedAssembler = true;
   SetDirectiveSuppressesReloc = true;
 }
diff --git a/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp b/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
index ad52c4d1fd7..9a63e26dec1 100644
--- a/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
+++ b/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
@@ -96,8 +96,6 @@ AArch64MCAsmInfoELF::AArch64MCAsmInfoELF(const Triple &T) {
   // Exceptions handling
   ExceptionsType = ExceptionHandling::DwarfCFI;
 
-  UseIntegratedAssembler = true;
-
   HasIdentDirective = true;
 }
 
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
index d30d15df3d0..765613cf347 100644
--- a/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
@@ -37,8 +37,6 @@ ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(const Triple &TheTriple) {
   ExceptionsType = (TheTriple.isOSDarwin() && !TheTriple.isWatchABI())
                        ? ExceptionHandling::SjLj
                        : ExceptionHandling::DwarfCFI;
-
-  UseIntegratedAssembler = true;
 }
 
 void ARMELFMCAsmInfo::anchor() { }
@@ -73,8 +71,6 @@ ARMELFMCAsmInfo::ARMELFMCAsmInfo(const Triple &TheTriple) {
 
   // foo(plt) instead of foo@plt
   UseParensForSymbolVariant = true;
-
-  UseIntegratedAssembler = true;
 }
 
 void ARMELFMCAsmInfo::setUseIntegratedAssembler(bool Value) {
@@ -116,7 +112,6 @@ ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
   ExceptionsType = ExceptionHandling::DwarfCFI;
   UseParensForSymbolVariant = true;
 
-  UseIntegratedAssembler = true;
   DwarfRegNumForCFI = false;
 
   // Conditional Thumb 4-byte instructions can have an implicit IT.
diff --git a/lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.cpp b/lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.cpp
index 4fb6d305446..b11ee42bfcd 100644
--- a/lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.cpp
+++ b/lib/Target/AVR/MCTargetDesc/AVRMCAsmInfo.cpp
@@ -23,7 +23,6 @@ AVRMCAsmInfo::AVRMCAsmInfo(const Triple &TT, const MCTargetOptions &Options) {
   PrivateGlobalPrefix = ".L";
   PrivateLabelPrefix = ".L";
   UsesELFSectionDirectiveForBSS = true;
-  UseIntegratedAssembler = true;
   SupportsDebugInformation = true;
 }
 
diff --git a/lib/Target/Lanai/MCTargetDesc/LanaiMCAsmInfo.cpp b/lib/Target/Lanai/MCTargetDesc/LanaiMCAsmInfo.cpp
index f1c17489704..d8c7bd15aac 100644
--- a/lib/Target/Lanai/MCTargetDesc/LanaiMCAsmInfo.cpp
+++ b/lib/Target/Lanai/MCTargetDesc/LanaiMCAsmInfo.cpp
@@ -28,9 +28,6 @@ LanaiMCAsmInfo::LanaiMCAsmInfo(const Triple & /*TheTriple*/,
   // Lanai assembly requires ".section" before ".bss"
   UsesELFSectionDirectiveForBSS = true;
 
-  // Use the integrated assembler instead of system one.
-  UseIntegratedAssembler = true;
-
   // Use '!' as comment string to correspond with old toolchain.
   CommentString = "!";
 
diff --git a/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp b/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
index cfdc44ada77..6117567dcae 100644
--- a/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
+++ b/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
@@ -24,5 +24,4 @@ MSP430MCAsmInfo::MSP430MCAsmInfo(const Triple &TT,
 
   AlignmentIsInBytes = false;
   UsesELFSectionDirectiveForBSS = true;
-  UseIntegratedAssembler = true;
 }
diff --git a/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp b/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
index 5182205edae..9c85a39bc34 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
@@ -50,5 +50,4 @@ MipsMCAsmInfo::MipsMCAsmInfo(const Triple &TheTriple,
   ExceptionsType = ExceptionHandling::DwarfCFI;
   DwarfRegNumForCFI = true;
   HasMipsExpressions = true;
-  UseIntegratedAssembler = true;
 }
diff --git a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
index feb7d3ff16a..8faf1bad737 100644
--- a/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
+++ b/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
@@ -51,8 +51,6 @@ PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
   Data64bitsDirective = is64Bit ? "\t.quad\t" : nullptr;
   AssemblerDialect = 1;           // New-Style mnemonics.
   LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
-
-  UseIntegratedAssembler = true;
 }
 
 void PPCXCOFFMCAsmInfo::anchor() {}
diff --git a/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp b/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
index 1a2a040990a..c5cc2ea34bb 100644
--- a/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
+++ b/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
@@ -42,8 +42,6 @@ SparcELFMCAsmInfo::SparcELFMCAsmInfo(const Triple &TheTriple) {
 
   SunStyleELFSectionSwitchSyntax = true;
   UsesELFSectionDirectiveForBSS = true;
-
-  UseIntegratedAssembler = true;
 }
 
 const MCExpr*
diff --git a/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp b/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
index d6cdacfcab9..e540ff4e481 100644
--- a/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
+++ b/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
@@ -23,6 +23,4 @@ SystemZMCAsmInfo::SystemZMCAsmInfo(const Triple &TT) {
   UsesELFSectionDirectiveForBSS = true;
   SupportsDebugInformation = true;
   ExceptionsType = ExceptionHandling::DwarfCFI;
-
-  UseIntegratedAssembler = true;
 }
diff --git a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
index 1c697a1ad63..c294da6baff 100644
--- a/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
+++ b/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp
@@ -71,8 +71,6 @@ X86MCAsmInfoDarwin::X86MCAsmInfoDarwin(const Triple &T) {
   // (actually, must, since otherwise the non-extern relocations we produce
   // overwhelm ld64's tiny little mind and it fails).
   DwarfFDESymbolsUseAbsDiff = true;
-
-  UseIntegratedAssembler = true;
 }
 
 X86_64MCAsmInfoDarwin::X86_64MCAsmInfoDarwin(const Triple &Triple)
@@ -102,10 +100,6 @@ X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
 
   // Exceptions handling
   ExceptionsType = ExceptionHandling::DwarfCFI;
-
-  // Always enable the integrated assembler by default.
-  // Clang also enabled it when the OS is Solaris but that is redundant here.
-  UseIntegratedAssembler = true;
 }
 
 const MCExpr *
@@ -141,8 +135,6 @@ X86MCAsmInfoMicrosoft::X86MCAsmInfoMicrosoft(const Triple &Triple) {
   TextAlignFillValue = 0x90;
 
   AllowAtInName = true;
-
-  UseIntegratedAssembler = true;
 }
 
 void X86MCAsmInfoMicrosoftMASM::anchor() { }
@@ -174,6 +166,4 @@ X86MCAsmInfoGNUCOFF::X86MCAsmInfoGNUCOFF(const Triple &Triple) {
   TextAlignFillValue = 0x90;
 
   AllowAtInName = true;
-
-  UseIntegratedAssembler = true;
 }