[GlobalISel] Add RegBankSelect hooks into the pass pipeline.

Now, RegBankSelect will happen after the IRTranslation and the target
may optionally add additional passes in between.

llvm-svn: 265716

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/LLVMTargetMachine.cpp b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
index 9c6236ec02b..a19049360c0 100644
--- a/llvm/lib/CodeGen/LLVMTargetMachine.cpp
+++ b/llvm/lib/CodeGen/LLVMTargetMachine.cpp
@@ -143,6 +143,14 @@ addPassesToGenerateCode(LLVMTargetMachine *TM, PassManagerBase &PM,
   if (LLVM_UNLIKELY(EnableGlobalISel)) {
     if (PassConfig->addIRTranslator())
       return nullptr;
+
+    // Before running the register bank selector, ask the target if it
+    // wants to run some passes.
+    PassConfig->addPreRegBankSelect();
+
+    if (PassConfig->addRegBankSelect())
+      return nullptr;
+
   } else if (PassConfig->addInstSelector())
     return nullptr;