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