ThinLTO: Fix assembler to emit alwaysInline in the summary

[Bharathi]

Summary

The earlier commit (https://reviews.llvm.org/D70014) missed this one : If Always_Inline happens to be the only entry in FuncFlags, then the assembler will not print it in the summary.

[tejohnson]

lgtm

llvm/lib/IR/AsmWriter.cpp

static std::string getLinkageNameWithSpace(GlobalValue::LinkageTypes LT) {
   return getLinkageName(LT) + " ";
 }
 
 void AssemblyWriter::printFunctionSummary(const FunctionSummary *FS) {
   Out << ", insts: " << FS->instCount();
 
   FunctionSummary::FFlags FFlags = FS->fflags();
   if (FFlags.ReadNone | FFlags.ReadOnly | FFlags.NoRecurse |
-      FFlags.ReturnDoesNotAlias | FFlags.NoInline) {
+      FFlags.ReturnDoesNotAlias | FFlags.NoInline | FFlags.AlwaysInline) {
     Out << ", funcFlags: (";
     Out << "readNone: " << FFlags.ReadNone;
     Out << ", readOnly: " << FFlags.ReadOnly;
     Out << ", noRecurse: " << FFlags.NoRecurse;
     Out << ", returnDoesNotAlias: " << FFlags.ReturnDoesNotAlias;
     Out << ", noInline: " << FFlags.NoInline;
     Out << ", alwaysInline: " << FFlags.AlwaysInline;
     Out << ")";

llvm/test/ThinLTO/X86/funcimport_alwaysinline.ll

 ; RUN: opt -module-summary %s -o %t1.bc
 ; RUN: opt -module-summary %p/Inputs/funcimport_alwaysinline.ll -o %t2.bc
 
 ; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.o -save-temps \
 ; RUN:     -r=%t1.bc,foo,plx \
 ; RUN:     -r=%t2.bc,main,plx \
 ; RUN:     -r=%t2.bc,foo,l \
 ; RUN:     -import-instr-limit=0
-; RUN: llvm-dis %t.o.2.3.import.bc -o - | FileCheck %s
+; RUN: llvm-dis %t.o.2.3.import.bc -o - | FileCheck %s --check-prefix=CHECK1
+; RUN: llvm-dis %t.o.index.bc -o - | FileCheck %s --check-prefix=CHECK2
 
 ; foo() being always_inline should be imported irrespective of the
 ; instruction limit
-; CHECK: define available_externally dso_local void @foo()
+; CHECK1: define available_externally dso_local void @foo()
 
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
 ; Function Attrs: alwaysinline nounwind uwtable
 define void @foo() #0 {
 entry:
   ret void
 }
 
 attributes #0 = { alwaysinline nounwind uwtable }
+; CHECK2: ^2 = gv: (guid: {{.*}}, summaries: (function: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 1, dsoLocal: 1, canAutoHide: 0), insts: 1, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 0, returnDoesNotAlias: 0, noInline: 0, alwaysInline: 1))))