| ; RUN: llvm-profdata merge %S/Inputs/select2.proftext -o %t.profdata |
| ; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -pgo-instr-select=true -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 @foo(i32 %n) { |
| ;USE: define i32 @foo(i32 %n) !prof ![[ENTRY_COUNT:[0-9]+]] { |
| entry: |
| br label %for.cond |
| |
| for.cond: |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ] |
| %sum.0 = phi i32 [ 0, %entry ], [ %add, %for.inc ] |
| %cmp = icmp slt i32 %i.0, %n |
| br i1 %cmp, label %for.body, label %for.end |
| ;USE: br i1 %cmp, label %for.body, label %for.end, !prof ![[BW_FOR_BR:[0-9]+]] |
| |
| for.body: |
| %cmp1 = icmp sgt i32 %sum.0, 10 |
| %cond = select i1 %cmp1, i32 20, i32 -10 |
| ;USE: %cond = select i1 %cmp1, i32 20, i32 -10, !prof ![[BW_FOR_SELECT:[0-9]+]] |
| %add = add nsw i32 %sum.0, %cond |
| br label %for.inc |
| |
| for.inc: |
| %inc = add nsw i32 %i.0, 1 |
| br label %for.cond |
| |
| for.end: |
| ret i32 %sum.0 |
| } |
| |
| ;USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 3} |
| ;USE: ![[BW_FOR_BR]] = !{!"branch_weights", i32 800, i32 3} |
| ;USE: ![[BW_FOR_SELECT]] = !{!"branch_weights", i32 300, i32 500} |