[mips] Add support for Global INValidate ASE

This includes

  Instructions: ginvi, ginvt,

  Assembler directives: .set ginv, .set noginv, .module ginv, .module noginv

  Attribute: ginv

  .MIPS.abiflags: GINV (0x20000)

Patch by Vladimir Stefanovic.

Differential Revision: https://reviews.llvm.org/D46268

llvm-svn: 332624
diff --git a/llvm/lib/Target/Mips/MipsSubtarget.cpp b/llvm/lib/Target/Mips/MipsSubtarget.cpp
index a4d159c..f71031c 100644
--- a/llvm/lib/Target/Mips/MipsSubtarget.cpp
+++ b/llvm/lib/Target/Mips/MipsSubtarget.cpp
@@ -79,7 +79,7 @@
       HasDSPR2(false), HasDSPR3(false), AllowMixed16_32(Mixed16_32 | Mips_Os16),
       Os16(Mips_Os16), HasMSA(false), UseTCCInDIV(false), HasSym32(false),
       HasEVA(false), DisableMadd4(false), HasMT(false), HasCRC(false),
-      HasVirt(false), UseIndirectJumpsHazard(false),
+      HasVirt(false), HasGINV(false), UseIndirectJumpsHazard(false),
       StackAlignOverride(StackAlignOverride),
       TM(TM), TargetTriple(TT), TSInfo(),
       InstrInfo(