[BPF][GlobalISel] select non-PreISelGenericOpcode (#75034)

This selects non-PreISelGenericOpcode as-is.

Depends on: #74999

Co-authored-by: Origami404 <[email protected]>

Author: inclyc

llvm/lib/Target/BPF/GISel/BPFInstructionSelector.cpp

@@ -76,6 +76,8 @@ BPFInstructionSelector::BPFInstructionSelector(const BPFTargetMachine &TM,
 }
 
 bool BPFInstructionSelector::select(MachineInstr &I) {
+  if (!isPreISelGenericOpcode(I.getOpcode()))
+    return true;
   if (selectImpl(I, *CoverageInfo))
     return true;
   return false;

llvm/test/CodeGen/BPF/GlobalISel/ir-translator-ret.ll

@@ -1,7 +1,12 @@
 ; RUN: llc -mtriple=bpfel -global-isel -verify-machineinstrs -stop-after=irtranslator < %s | FileCheck %s
+; RUN: llc -mtriple=bpfel -global-isel -verify-machineinstrs < %s | FileCheck --check-prefix=ISEL %s
 
 ; CHECK: name: f
 ; CHECK: RET
 define void @f() {
+; ISEL-LABEL: f:
+; ISEL:       # %bb.0:
+; ISEL-NEXT:  exit
+; ISEL-NEXT: .Lfunc_end0:
   ret void
 }