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1; RUN: opt < %s -passes='require<profile-summary>,cgscc(inline)' -S -inline-threshold=50 -inline-cold-callsite-threshold=0 -hot-callsite-threshold=50 | FileCheck %s2; This tests incremental updates to caller's BFI as a callee gets inlined.3; In bottom-up inlining, first c->e inlining is considered and fails because4; e's size exceeds the threshold of 50. Then a->c inlining is considered and it5; succeeds. a's BFI is updated incrementally. As c's blocks get pruned, the 6; block with label cond_false is removed and since the remanining code is7; straight-line a single block gets cloned into a. This block should get the8; maximum block frequency among the original blocks in c. If it gets the9; frequency of the block with label cond_true in @c, its frequency will be10; 1/10th of function a's entry block frequency, resulting in a callsite count of11; 2 (since a's entry count is 20) which means that a->e callsite will be12; considered cold and not inlined. 13 14@data = external global i3215; CHECK-LABEL: define i32 @a(16define i32 @a(i32 %a1) !prof !21 {17; CHECK-NOT: call i32 @c18; CHECK-NOT: call i32 @e19; CHECK: ret20entry:21 %cond = icmp sle i32 %a1, 122 %a2 = call i32 @c(i32 1)23 br label %exit24exit:25 ret i32 %a226}27 28declare void @ext();29 30; CHECK: @c(i32 %c1) !prof [[COUNT1:![0-9]+]]31define i32 @c(i32 %c1) !prof !23 {32 call void @ext()33 %cond = icmp sle i32 %c1, 134 br i1 %cond, label %cond_true, label %cond_false, !prof !2535 36cond_false:37 br label %exit38 39cond_true:40 %c11 = call i32 @e(i32 %c1)41 br label %exit42exit:43 %c12 = phi i32 [ 0, %cond_false], [ %c11, %cond_true ]44 ret i32 %c1245}46 47 48; CHECK: @e(i32 %c1) !prof [[COUNT2:![0-9]+]]49define i32 @e(i32 %c1) !prof !24 {50 call void @ext()51 call void @ext()52 %cond = icmp sle i32 %c1, 153 br i1 %cond, label %cond_true, label %cond_false54 55cond_false:56 call void @ext()57 %c2 = load i32, ptr @data, align 458 %c3 = add i32 %c1, %c259 %c4 = mul i32 %c3, %c260 %c5 = add i32 %c4, %c261 %c6 = mul i32 %c5, %c262 %c7 = add i32 %c6, %c263 %c8 = mul i32 %c7, %c264 %c9 = add i32 %c8, %c265 %c10 = mul i32 %c9, %c266 ret i32 %c1067 68cond_true:69 ret i32 070}71 72; CHECK: [[COUNT1]] = !{!"function_entry_count", i64 480}73; CHECK: [[COUNT2]] = !{!"function_entry_count", i64 80}74!21 = !{!"function_entry_count", i64 20}75!23 = !{!"function_entry_count", i64 500}76!24 = !{!"function_entry_count", i64 100}77!25 = !{!"branch_weights", i32 1, i32 9}78 79!llvm.module.flags = !{!1}80!1 = !{i32 1, !"ProfileSummary", !2}81!2 = !{!3, !4, !5, !6, !7, !8, !9, !10}82!3 = !{!"ProfileFormat", !"InstrProf"}83!4 = !{!"TotalCount", i64 10000}84!5 = !{!"MaxCount", i64 1000}85!6 = !{!"MaxInternalCount", i64 1}86!7 = !{!"MaxFunctionCount", i64 1000}87!8 = !{!"NumCounts", i64 3}88!9 = !{!"NumFunctions", i64 3}89!10 = !{!"DetailedSummary", !11}90!11 = !{!12, !13, !14}91!12 = !{i32 10000, i64 1000, i32 1}92!13 = !{i32 999000, i64 1000, i32 1}93!14 = !{i32 999999, i64 5, i32 2}94