| ; RUN: llvm-profdata merge %S/Inputs/fix_entry_count.proftext -o %t.profdata |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-instrument-entry=true -pgo-test-profile-file=%t.profdata -S | FileCheck %s --check-prefix=USE |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @test_simple_for(i32 %n) { |
| ; USE: define i32 @test_simple_for(i32 %n) |
| ; USE-SAME: !prof ![[ENTRY_COUNT:[0-9]*]] |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i = phi i32 [ 0, %entry ], [ %inc1, %for.inc ] |
| %sum = phi i32 [ 1, %entry ], [ %inc, %for.inc ] |
| %cmp = icmp slt i32 %i, %n |
| br i1 %cmp, label %for.body, label %for.end |
| ; USE: br i1 %cmp, label %for.body, label %for.end |
| ; USE-SAME: !prof ![[BW_FOR_COND:[0-9]+]] |
| |
| for.body: |
| %inc = add nsw i32 %sum, 1 |
| br label %for.inc |
| |
| for.inc: |
| %inc1 = add nsw i32 %i, 1 |
| br label %for.cond |
| |
| for.end: |
| ret i32 %sum |
| } |
| ; USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 1} |
| ; USE: ![[BW_FOR_COND]] = !{!"branch_weights", i32 96, i32 1} |
