llvm/test/ThinLTO/X86/dot-dumper2.ll

   1 ; Test writeOnly attribute
   2 ; RUN: opt -module-summary %s -o %t1.bc
   3 ; RUN: opt -module-summary %p/Inputs/dot-dumper2.ll -o %t2.bc
   4 ; RUN: llvm-lto2 run -save-temps %t1.bc %t2.bc -o %t3 \
   5 ; RUN:  -r=%t1.bc,main,px \
   6 ; RUN:  -r=%t1.bc,A, \
   7 ; RUN:  -r=%t2.bc,A,p
   8
   9 ; RUN: cat %t3.index.dot | FileCheck --check-prefix=COMBINED %s
  10
  11 ; COMBINED: digraph Summary {
  12 ; COMBINED-NEXT:  // Module:
  13 ; COMBINED-NEXT:  subgraph cluster_0 {
  14 ; COMBINED-NEXT:    style = filled;
  15 ; COMBINED-NEXT:    color = lightgrey;
  16 ; COMBINED-NEXT:    label =
  17 ; COMBINED-NEXT:    node [style=filled,fillcolor=lightblue];
  18 ; COMBINED-NEXT:    M0_[[MAIN:[0-9]+]] [shape="record",label="main|extern (inst: 2, ffl: 0000000000)}"]; // function
  19 ; COMBINED-NEXT:    // Edges:
  20 ; COMBINED-NEXT:  }
  21 ; COMBINED-NEXT:  // Module:
  22 ; COMBINED-NEXT:  subgraph cluster_1 {
  23 ; COMBINED-NEXT:    style = filled;
  24 ; COMBINED-NEXT:    color = lightgrey;
  25 ; COMBINED-NEXT:    label =
  26 ; COMBINED-NEXT:    node [style=filled,fillcolor=lightblue];
  27 ; COMBINED-NEXT:    M1_[[A:[0-9]+]] [shape="Mrecord",label="A|extern}"]; // variable, writeOnly
  28 ; COMBINED-NEXT:    // Edges:
  29 ; COMBINED-NEXT:  }
  30 ; COMBINED-NEXT:  // Cross-module edges:
  31 ; COMBINED-NEXT:  M0_[[MAIN]] -> M1_[[A]] [style=dashed,color=violetred]; // writeOnly-ref
  32 ; COMBINED-NEXT: }
  33
  34 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  35 target triple = "x86_64-unknown-linux-gnu"
  36
  37 @A = external local_unnamed_addr global i32, align 4
  38
  39 ; Function Attrs: nounwind uwtable
  40 define i32 @main() local_unnamed_addr {
  41   store i32 42, ptr @A, align 4
  42   ret i32 0
  43 }