1; RUN: llvm-profdata merge %S/Inputs/fix_entry_count.proftext -o %t.profdata 2; RUN: opt < %s -pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE 3; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE 4 5target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 6target triple = "x86_64-unknown-linux-gnu" 7 8define i32 @test_simple_for(i32 %n) { 9; USE: define i32 @test_simple_for(i32 %n) 10; USE-SAME: !prof ![[ENTRY_COUNT:[0-9]*]] 11entry: 12 br label %for.cond 13 14for.cond: 15 %i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ] 16 %sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ] 17 %cmp = icmp slt i32 %i, %n 18 br i1 %cmp, label %for.body, label %for.end 19; USE: br i1 %cmp, label %for.body, label %for.end 20; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]] 21 22for.body: 23 %inc = add nsw i32 %sum, 1 24 br label %for.inc 25 26for.inc: 27 %inc1 = add nsw i32 %i, 1 28 br label %for.cond 29 30for.end: 31 ret i32 %sum 32} 33; USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 1} 34; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 1} 35