xref: /llvm-project/llvm/test/Transforms/PGOProfile/memop_hash.ll (revision 9ff36df5a4a7d52c51e950522870bb64912688d2) 
1; RUN: opt < %s -passes=pgo-instr-gen -S | FileCheck %s
2
3target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
4target triple = "x86_64-unknown-linux-gnu"
5
6declare void @llvm.memcpy.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1)
7
8define i64 @foo1(ptr %a, ptr %b, i32 %s) {
9entry:
10  call void @llvm.memcpy.p0.p0.i32(ptr %a, ptr %b, i32 %s, i1 false);
11  ret i64 0
12}
13
14define i64 @foo2(ptr %a, ptr %b, i32 %s) {
15entry:
16  ret i64 0
17}
18
19; The two hashes should not be equal as the existence of the memcpy should change the hash.
20;
21; CHECK: @foo1
22; CHECK: call void @llvm.instrprof.increment(ptr @__profn_foo1, i64 [[FOO1_HASH:[0-9]+]], i32 1, i32 0)
23; CHECK: @foo2
24; CHECK-NOT: call void @llvm.instrprof.increment(ptr @__profn_foo2, i64 [[FOO1_HASH]], i32 1, i32 0)
25