[GlobalISel] Remove types on selected insts instead of using LLT().

LLT() has a particular meaning: it's one invalid type. But we really
want selected instructions to have no type whatsoever.

Also verify that types don't linger after ISel, and enable the verifier
on the AArch64 select test.

llvm-svn: 277001

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index ac5ce811f3a..ca3799db1ed 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -716,6 +716,8 @@ void MachineInstr::setType(LLT Ty, unsigned Idx) {}
 
 LLT MachineInstr::getType(unsigned Idx) const { return LLT{}; }
 
+void MachineInstr::removeTypes() {}
+
 #else
 unsigned MachineInstr::getNumTypes() const { return Tys.size(); }
 
@@ -728,6 +730,10 @@ void MachineInstr::setType(LLT Ty, unsigned Idx) {
 }
 
 LLT MachineInstr::getType(unsigned Idx) const { return Tys[Idx]; }
+
+void MachineInstr::removeTypes() {
+  Tys.clear();
+}
 #endif // LLVM_BUILD_GLOBAL_ISEL
 
 /// RemoveRegOperandsFromUseLists - Unlink all of the register operands in