1; RUN: opt < %s -passes=pgo-instr-gen -pgo-instr-select=true -S | FileCheck %s --check-prefix=GEN 2; RUN: opt < %s -passes=pgo-instr-gen -pgo-instr-select=false -S | FileCheck %s --check-prefix=NOSELECT 3; RUN: llvm-profdata merge %S/Inputs/select1.proftext -o %t.profdata 4; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -pgo-instr-select=true -S | FileCheck %s --check-prefix=USE 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_br_2(i32 %i) { 9entry: 10 %cmp = icmp sgt i32 %i, 0 11 br i1 %cmp, label %if.then, label %if.else 12 13if.then: 14 %add = add nsw i32 %i, 2 15;GEN: %[[STEP:[0-9]+]] = zext i1 %cmp to i64 16;GEN: call void @llvm.instrprof.increment.step({{.*}} i32 3, i32 2, i64 %[[STEP]]) 17;NOSELECT-NOT: call void @llvm.instrprof.increment.step 18 %s = select i1 %cmp, i32 %add, i32 0 19;USE: select i1 %cmp{{.*}}, !prof ![[BW_ENTRY:[0-9]+]] 20;USE: ![[BW_ENTRY]] = !{!"branch_weights", i32 1, i32 3} 21 22 br label %if.end 23 24if.else: 25 %sub = sub nsw i32 %i, 2 26 br label %if.end 27 28if.end: 29 %retv = phi i32 [ %add, %if.then ], [ %sub, %if.else ] 30 ret i32 %retv 31} 32