diff --git a/clang/lib/Driver/ToolChains/AMDGPU.h b/clang/lib/Driver/ToolChains/AMDGPU.h
--- a/clang/lib/Driver/ToolChains/AMDGPU.h
+++ b/clang/lib/Driver/ToolChains/AMDGPU.h
@@ -61,10 +61,8 @@
   AMDGPUToolChain(const Driver &D, const llvm::Triple &Triple,
                   const llvm::opt::ArgList &Args);
   unsigned GetDefaultDwarfVersion() const override { return 5; }
-  bool IsIntegratedAssemblerDefault() const override { return true; }
-  bool IsMathErrnoDefault() const override { return false; }
 
-  bool useIntegratedAs() const override { return true; }
+  bool IsMathErrnoDefault() const override { return false; }
   bool isCrossCompiling() const override { return true; }
   bool isPICDefault() const override { return false; }
   bool isPIEDefault(const llvm::opt::ArgList &Args) const override {
diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
--- a/clang/lib/Driver/ToolChains/Gnu.cpp
+++ b/clang/lib/Driver/ToolChains/Gnu.cpp
@@ -2892,6 +2892,7 @@
   switch (getTriple().getArch()) {
   case llvm::Triple::aarch64:
   case llvm::Triple::aarch64_be:
+  case llvm::Triple::amdgcn:
   case llvm::Triple::arm:
   case llvm::Triple::armeb:
   case llvm::Triple::avr:
@@ -2912,6 +2913,7 @@
   case llvm::Triple::ppcle:
   case llvm::Triple::ppc64:
   case llvm::Triple::ppc64le:
+  case llvm::Triple::r600:
   case llvm::Triple::riscv32:
   case llvm::Triple::riscv64:
   case llvm::Triple::sparc: