1; RUN: opt < %s --passes=instrprof --sampled-instrumentation -S | FileCheck %s --check-prefixes=SAMPLE-VAR,SAMPLE-CODE,SAMPLE-DURATION,SAMPLE-WEIGHT 2; RUN: opt < %s --passes=instrprof --sampled-instrumentation --sampled-instr-burst-duration=100 -S | FileCheck %s --check-prefixes=SAMPLE-VAR,SAMPLE-CODE,SAMPLE-DURATION100,SAMPLE-WEIGHT100 3; RUN: opt < %s --passes=instrprof --sampled-instrumentation --sampled-instr-burst-duration=65536 -S | FileCheck %s --check-prefixes=SAMPLE-VAR,SAMPLE-CODE,UNSAMPLED-DURATION,UNSAMPLED-WEIGHT 4 5target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 6target triple = "x86_64-unknown-linux-gnu" 7 8$__llvm_profile_raw_version = comdat any 9 10; SAMPLE-VAR: $__llvm_profile_sampling = comdat any 11 12@__llvm_profile_raw_version = constant i64 72057594037927940, comdat 13@__profn_f = private constant [1 x i8] c"f" 14 15; SAMPLE-VAR: @__llvm_profile_sampling = thread_local global i16 0, comdat 16; SAMPLE-VAR: @__profc_f = private global [1 x i64] zeroinitializer, section "__llvm_prf_cnts", comdat, align 8 17; SAMPLE-VAR: @__profd_f = private global { i64, i64, i64, i64, ptr, ptr, i32, [3 x i16], i32 } { i64 -3706093650706652785, i64 12884901887, i64 sub (i64 ptrtoint (ptr @__profc_f to i64), i64 ptrtoint (ptr @__profd_f to i64)), i64 0, ptr @f.local, ptr null, i32 1, [3 x i16] zeroinitializer, i32 0 }, section "__llvm_prf_data", comdat($__profc_f), align 8 18; SAMPLE-VAR: @__llvm_prf_nm = private constant {{.*}}, section "__llvm_prf_names", align 1 19; SAMPLE-VAR: @llvm.compiler.used = appending global [2 x ptr] [ptr @__llvm_profile_sampling, ptr @__profd_f], section "llvm.metadata" 20; SAMPLE-VAR: @llvm.used = appending global [1 x ptr] [ptr @__llvm_prf_nm], section "llvm.metadata" 21 22 23define void @f() { 24; SAMPLE-CODE-LABEL: @f( 25; SAMPLE-CODE: entry: 26; SAMPLE-CODE-NEXT: [[TMP0:%.*]] = load i16, ptr @__llvm_profile_sampling, align 2 27; SAMPLE-DURATION: [[TMP1:%.*]] = icmp ule i16 [[TMP0]], 199 28; SAMPLE-DURATION100: [[TMP1:%.*]] = icmp ule i16 [[TMP0]], 99 29; UNSAMPLED-DURATION: [[TMP1:%.*]] = icmp ule i16 [[TMP0]], -1 30; SAMPLE-CODE: br i1 [[TMP1]], label %[[TMP2:.*]], label %[[TMP4:.*]], !prof !0 31; SAMPLE-CODE: [[TMP2]]: 32; SAMPLE-CODE-NEXT: [[PGOCOUNT:%.*]] = load i64, ptr @__profc_f 33; SAMPLE-CODE-NEXT: [[TMP3:%.*]] = add i64 [[PGOCOUNT]], 1 34; SAMPLE-CODE-NEXT: store i64 [[TMP3]], ptr @__profc_f 35; SAMPLE-CODE-NEXT: br label %[[TMP4]] 36; SAMPLE-CODE: [[TMP4]]: 37; SAMPLE-CODE-NEXT: [[TMP5:%.*]] = add i16 [[TMP0]], 1 38; SAMPLE-CODE-NEXT: store i16 [[TMP5]], ptr @__llvm_profile_sampling, align 2 39; SAMPLE-CODE-NEXT: ret void 40; 41entry: 42 call void @llvm.instrprof.increment(i8* getelementptr inbounds ([1 x i8], [1 x i8]* @__profn_f, i32 0, i32 0), i64 12884901887, i32 1, i32 0) 43 ret void 44} 45 46; SAMPLE-WEIGHT: !0 = !{!"branch_weights", i32 200, i32 65336} 47; SAMPLE-WEIGHT100: !0 = !{!"branch_weights", i32 100, i32 65436} 48; UNSAMPLED-WEIGHT: !0 = !{!"branch_weights", i32 65536, i32 0} 49 50declare void @llvm.instrprof.increment(i8*, i64, i32, i32) 51