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; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
; Cold function, %dup should not be duplicated into predecessors.
define i32 @cold(i32 %a, ptr %p, ptr %q) !prof !21 {
; CHECK-LABEL: cold
; CHECK: %entry
; CHECK: %true1
; CHECK: %dup
; CHECK: %true2
; CHECK: %false1
; CHECK: %false2
entry:
%cond1 = icmp sgt i32 %a, 1
br i1 %cond1, label %true1, label %false1, !prof !30
true1:
%v1 = load i32, ptr %p, align 4
%v2 = add i32 %v1, 2
br label %dup
false1:
%v3 = load i32, ptr %q, align 4
%v4 = sub i32 %v3, 3
br label %dup
dup:
%v5 = phi i32 [%v2, %true1], [%v4, %false1]
%cond2 = icmp sgt i32 %v5, 4
br i1 %cond2, label %true2, label %false2, !prof !30
true2:
%v6 = xor i32 %v5, %a
br label %exit
false2:
%v7 = and i32 %v5, %a
br label %exit
exit:
%v8 = phi i32 [%v6, %true2], [%v7, %false2]
ret i32 %v8
}
; Same code as previous function, but with hot profile count.
; So %dup should be duplicated into predecessors.
define i32 @hot(i32 %a, ptr %p, ptr %q) !prof !22 {
; CHECK-LABEL: hot
; CHECK: %entry
; CHECK: %true1
; CHECK: %false2
; CHECK: %false1
; CHECK: %true2
entry:
%cond1 = icmp sgt i32 %a, 1
br i1 %cond1, label %true1, label %false1, !prof !30
true1:
%v1 = load i32, ptr %p, align 4
%v2 = add i32 %v1, 2
br label %dup
false1:
%v3 = load i32, ptr %q, align 4
%v4 = sub i32 %v3, 3
br label %dup
dup:
%v5 = phi i32 [%v2, %true1], [%v4, %false1]
%cond2 = icmp sgt i32 %v5, 4
br i1 %cond2, label %true2, label %false2, !prof !30
true2:
%v6 = xor i32 %v5, %a
br label %exit
false2:
%v7 = and i32 %v5, %a
br label %exit
exit:
%v8 = phi i32 [%v6, %true2], [%v7, %false2]
ret i32 %v8
}
!llvm.module.flags = !{!1}
!21 = !{!"function_entry_count", i64 10}
!22 = !{!"function_entry_count", i64 400}
!30 = !{!"branch_weights", i32 1, i32 1}
!1 = !{i32 1, !"ProfileSummary", !2}
!2 = !{!3, !4, !5, !6, !7, !8, !9, !10}
!3 = !{!"ProfileFormat", !"InstrProf"}
!4 = !{!"TotalCount", i64 10000}
!5 = !{!"MaxCount", i64 10}
!6 = !{!"MaxInternalCount", i64 1}
!7 = !{!"MaxFunctionCount", i64 1000}
!8 = !{!"NumCounts", i64 3}
!9 = !{!"NumFunctions", i64 3}
!10 = !{!"DetailedSummary", !11}
!11 = !{!12, !13, !14}
!12 = !{i32 10000, i64 100, i32 1}
!13 = !{i32 999000, i64 100, i32 1}
!14 = !{i32 999999, i64 1, i32 2}
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