llvm-project/llvm/test/Bitcode/thinlto-function-summary-refgraph.ll

; Test to check both the callgraph and refgraph in summary
; RUN: opt -module-summary %s -o %t.o
; RUN: llvm-bcanalyzer -dump %t.o | FileCheck %s

; See if the calls and other references are recorded properly using the
; expected value id and other information as appropriate (callsite cout
; for calls). Use different linkage types for the various test cases to
; distinguish the test cases here (op1 contains the linkage type).
; Note that op3 contains the # non-call references.
; This also ensures that we didn't include a call or reference to intrinsic
; llvm.ctpop.i8.
; CHECK:       <GLOBALVAL_SUMMARY_BLOCK
; Function main contains call to func, as well as address reference to func:
; CHECK-DAG:    <PERMODULE {{.*}} op0=[[MAINID:[0-9]+]] op1=0 {{.*}} op3=1 op4=[[FUNCID:[0-9]+]] op5=[[FUNCID]]/>
; Function W contains a call to func3 as well as a reference to globalvar:
; CHECK-DAG:    <PERMODULE {{.*}} op0=[[WID:[0-9]+]] op1=5 {{.*}} op3=1 op4=[[GLOBALVARID:[0-9]+]] op5=[[FUNC3ID:[0-9]+]]/>
; Function X contains call to foo, as well as address reference to foo
; which is in the same instruction as the call:
; CHECK-DAG:    <PERMODULE {{.*}} op0=[[XID:[0-9]+]] op1=1 {{.*}} op3=1 op4=[[FOOID:[0-9]+]] op5=[[FOOID]]/>
; Function Y contains call to func2, and ensures we don't incorrectly add
; a reference to it when reached while earlier analyzing the phi using its
; return value:
; CHECK-DAG:    <PERMODULE {{.*}} op0=[[YID:[0-9]+]] op1=8 {{.*}} op3=0 op4=[[FUNC2ID:[0-9]+]]/>
; Function Z contains call to func2, and ensures we don't incorrectly add
; a reference to it when reached while analyzing subsequent use of its return
; value:
; CHECK-DAG:    <PERMODULE {{.*}} op0=[[ZID:[0-9]+]] op1=3 {{.*}} op3=0 op4=[[FUNC2ID:[0-9]+]]/>
; Variable bar initialization contains address reference to func:
; CHECK-DAG:    <PERMODULE_GLOBALVAR_INIT_REFS {{.*}} op0=[[BARID:[0-9]+]] op1=0 op2=[[FUNCID]]/>
; CHECK:  </GLOBALVAL_SUMMARY_BLOCK>

; CHECK-NEXT:  <VALUE_SYMTAB
; CHECK-DAG:    <ENTRY {{.*}} op0=[[BARID]] {{.*}} record string = 'bar'
; CHECK-DAG:    <ENTRY {{.*}} op0=[[FUNCID]] {{.*}} record string = 'func'
; CHECK-DAG:    <ENTRY {{.*}} op0=[[FOOID]] {{.*}} record string = 'foo'
; CHECK-DAG:    <FNENTRY {{.*}} op0=[[MAINID]] {{.*}} record string = 'main'
; CHECK-DAG:    <FNENTRY {{.*}} op0=[[WID]] {{.*}} record string = 'W'
; CHECK-DAG:    <FNENTRY {{.*}} op0=[[XID]] {{.*}} record string = 'X'
; CHECK-DAG:    <FNENTRY {{.*}} op0=[[YID]] {{.*}} record string = 'Y'
; CHECK-DAG:    <FNENTRY {{.*}} op0=[[ZID]] {{.*}} record string = 'Z'
; CHECK-DAG:    <ENTRY {{.*}} op0=[[FUNC2ID]] {{.*}} record string = 'func2'
; CHECK-DAG:    <ENTRY {{.*}} op0=[[FUNC3ID]] {{.*}} record string = 'func3'
; CHECK-DAG:    <ENTRY {{.*}} op0=[[GLOBALVARID]] {{.*}} record string = 'globalvar'
; CHECK:  </VALUE_SYMTAB>

; ModuleID = 'thinlto-function-summary-refgraph.ll'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@bar = global void (...)* bitcast (void ()* @func to void (...)*), align 8

@globalvar = global i32 0, align 4

declare void @func() #0
declare i32 @func2(...) #1
declare void @foo(i8* %F) #0
declare i32 @func3(i32* dereferenceable(4)) #2

; Function Attrs: nounwind uwtable
define weak_odr void @W() #0 {
entry:
  %call = tail call i32 @func3(i32* nonnull dereferenceable(4) @globalvar)
  ret void
}

; Function Attrs: nounwind uwtable
define available_externally void @X() #0 {
entry:
  call void @foo(i8* bitcast (void (i8*)* @foo to i8*))
  ret void
}

; Function Attrs: nounwind uwtable
define private i32 @Y(i32 %i) #0 {
entry:
  %cmp3 = icmp slt i32 %i, 10
  br i1 %cmp3, label %while.body.preheader, label %while.end

while.body.preheader:                             ; preds = %entry
  br label %while.body

while.body:                                       ; preds = %while.body.preheader, %while.body
  %j.05 = phi i32 [ %add, %while.body ], [ 0, %while.body.preheader ]
  %i.addr.04 = phi i32 [ %inc, %while.body ], [ %i, %while.body.preheader ]
  %inc = add nsw i32 %i.addr.04, 1
  %call = tail call i32 (...) @func2() #2
  %add = add nsw i32 %call, %j.05
  %exitcond = icmp eq i32 %inc, 10
  br i1 %exitcond, label %while.end.loopexit, label %while.body

while.end.loopexit:                               ; preds = %while.body
  %add.lcssa = phi i32 [ %add, %while.body ]
  br label %while.end

while.end:                                        ; preds = %while.end.loopexit, %entry
  %j.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %while.end.loopexit ]
  ret i32 %j.0.lcssa
}

; Function Attrs: nounwind uwtable
define linkonce_odr i32 @Z() #0 {
entry:
  %call = tail call i32 (...) @func2() #2
  ret i32 %call
}

declare i8 @llvm.ctpop.i8(i8)

; Function Attrs: nounwind uwtable
define i32 @main() #0 {
entry:
  %retval = alloca i32, align 4
  %foo = alloca void (...)*, align 8
  store i32 0, i32* %retval, align 4
  store void (...)* bitcast (void ()* @func to void (...)*), void (...)** %foo, align 8
  %0 = load void (...)*, void (...)** %foo, align 8
  call void (...) %0()
  call void @func()
  call i8  @llvm.ctpop.i8( i8 10 )
  ret i32 0
}