xref: /llvm-project/llvm/test/Transforms/PGOProfile/select2.ll (revision b5d884a38c3524fdba82c525f2cd0237e85c60ee)
1cee313d2SEric Christopher; RUN: llvm-profdata merge %S/Inputs/select2.proftext -o %t.profdata
2cee313d2SEric Christopher; RUN: opt < %s -passes=pgo-instr-use -pgo-test-profile-file=%t.profdata -pgo-instr-select=true -S | FileCheck %s --check-prefix=USE
3cee313d2SEric Christopher
47b1d7937SAmy Huangtarget datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
5cee313d2SEric Christophertarget triple = "x86_64-unknown-linux-gnu"
6cee313d2SEric Christopher
7cee313d2SEric Christopherdefine i32 @foo(i32 %n) {
8cee313d2SEric Christopher;USE: define i32 @foo(i32 %n) !prof ![[ENTRY_COUNT:[0-9]+]] {
9cee313d2SEric Christopherentry:
10cee313d2SEric Christopher  br label %for.cond
11cee313d2SEric Christopher
12cee313d2SEric Christopherfor.cond:
13cee313d2SEric Christopher  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
14cee313d2SEric Christopher  %sum.0 = phi i32 [ 0, %entry ], [ %add, %for.inc ]
15cee313d2SEric Christopher  %cmp = icmp slt i32 %i.0, %n
16cee313d2SEric Christopher  br i1 %cmp, label %for.body, label %for.end
17cee313d2SEric Christopher;USE:  br i1 %cmp, label %for.body, label %for.end, !prof ![[BW_FOR_BR:[0-9]+]]
18cee313d2SEric Christopher
19cee313d2SEric Christopherfor.body:
20cee313d2SEric Christopher  %cmp1 = icmp sgt i32 %sum.0, 10
21cee313d2SEric Christopher  %cond = select i1 %cmp1, i32 20, i32 -10
22cee313d2SEric Christopher;USE:  %cond = select i1 %cmp1, i32 20, i32 -10, !prof ![[BW_FOR_SELECT:[0-9]+]]
23cee313d2SEric Christopher  %add = add nsw i32 %sum.0, %cond
24cee313d2SEric Christopher  br label %for.inc
25cee313d2SEric Christopher
26cee313d2SEric Christopherfor.inc:
27cee313d2SEric Christopher  %inc = add nsw i32 %i.0, 1
28cee313d2SEric Christopher  br label %for.cond
29cee313d2SEric Christopher
30cee313d2SEric Christopherfor.end:
31cee313d2SEric Christopher  ret i32 %sum.0
32cee313d2SEric Christopher}
33cee313d2SEric Christopher
34cee313d2SEric Christopher;USE: ![[ENTRY_COUNT]] = !{!"function_entry_count", i64 3}
35*5c31b8b9SArthur Eubanks;USE: ![[BW_FOR_BR]] = !{!"branch_weights", i32 800, i32 3}
36*5c31b8b9SArthur Eubanks;USE: ![[BW_FOR_SELECT]] = !{!"branch_weights", i32 300, i32 500}
37