llvm/test/CodeGen/X86/basic-block-sections-labels-empty-function.ll

   1 ;; Verify that the BB address map is not emitted for empty functions.
   2 ; RUN: llc < %s -mtriple=x86_64 -basic-block-sections=labels | FileCheck %s --check-prefixes=CHECK,BASIC
   3 ; RUN: llc < %s -mtriple=x86_64 -basic-block-sections=labels -pgo-analysis-map=func-entry-count,bb-freq | FileCheck %s --check-prefixes=CHECK,PGO
   4
   5 define void @empty_func() {
   6 entry:
   7   unreachable
   8 }
   9 ; CHECK:                {{^ *}}.text{{$}}
  10 ; CHECK:        empty_func:
  11 ; CHECK:        .Lfunc_begin0:
  12 ; CHECK-NOT:    .section        .llvm_bb_addr_map
  13
  14 define void @func() {
  15 entry:
  16   ret void
  17 }
  18
  19 ; CHECK:        func:
  20 ; CHECK:        .Lfunc_begin1:
  21 ; CHECK:                .section        .llvm_bb_addr_map,"o",@llvm_bb_addr_map,.text{{$}}
  22 ; CHECK-NEXT:           .byte 2                 # version
  23 ; BASIC-NEXT:           .byte 0                 # feature
  24 ; PGO-NEXT:             .byte 3                 # feature
  25 ; CHECK-NEXT:           .quad   .Lfunc_begin1   # function address