1 ;; Test that we don't instrument loads to PGO counters or other
2 ;; compiler inserted variables.
4 ; RUN: opt < %s -passes='function(memprof),module(memprof-module)' -S | FileCheck --check-prefixes=CHECK %s
6 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
7 target triple = "x86_64-unknown-linux-gnu"
9 $__profc__Z3foov = comdat nodeduplicate
10 @__profc__Z3foov = private global [1 x i64] zeroinitializer, section "__llvm_prf_cnts", comdat, align 8
11 @__llvm_gcov_ctr = internal global [1 x i64] zeroinitializer
13 define void @_Z3foov(ptr %a) {
15 ;; Load that should get instrumentation.
16 %tmp1 = load i32, ptr %a, align 4
18 %pgocount = load i64, ptr @__profc__Z3foov, align 8
19 %0 = add i64 %pgocount, 1
20 store i64 %0, ptr @__profc__Z3foov, align 8
21 ;; Gcov counter update
22 %gcovcount = load i64, ptr @__llvm_gcov_ctr, align 8
23 %1 = add i64 %gcovcount, 1
24 store i64 %1, ptr @__llvm_gcov_ctr, align 8
28 ;; We should only add memory profile instrumentation for the first load.
29 ; CHECK: define void @_Z3foov
31 ; CHECK-NEXT: %0 = load i64, ptr @__memprof_shadow_memory_dynamic_address, align 8
32 ; CHECK-NEXT: %1 = ptrtoint ptr %a to i64
33 ; CHECK-NEXT: %2 = and i64 %1, -64
34 ; CHECK-NEXT: %3 = lshr i64 %2, 3
35 ; CHECK-NEXT: %4 = add i64 %3, %0
36 ; CHECK-NEXT: %5 = inttoptr i64 %4 to ptr
37 ; CHECK-NEXT: %6 = load i64, ptr %5, align 8
38 ; CHECK-NEXT: %7 = add i64 %6, 1
39 ; CHECK-NEXT: store i64 %7, ptr %5, align 8
40 ; CHECK-NEXT: %tmp1 = load i32, ptr %a, align 4
41 ; CHECK-NEXT: %pgocount = load i64, ptr @__profc__Z3foov
42 ; CHECK-NEXT: %8 = add i64 %pgocount, 1
43 ; CHECK-NEXT: store i64 %8, ptr @__profc__Z3foov
44 ; CHECK-NEXT: %gcovcount = load i64, ptr @__llvm_gcov_ctr
45 ; CHECK-NEXT: %9 = add i64 %gcovcount, 1
46 ; CHECK-NEXT: store i64 %9, ptr @__llvm_gcov_ctr
47 ; CHECK-NEXT: ret void