derek.holloway
7502bf64a4
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52 lines
1.1 KiB
LLVM
52 lines
1.1 KiB
LLVM
; RUN: opt -debug-only=branch-prob -passes=jump-threading -S %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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; Make sure that we set the branch probability for the newly created
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; basic block.
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define void @foo(i1 %cond1, i1 %cond2) !prof !0 !PGOFuncName !1 {
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entry:
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br i1 %cond1, label %bb.f1, label %bb.f2, !prof !2
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bb.f1:
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call void @f1()
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br label %bb.cond2
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bb.f2:
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call void @f2()
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br label %bb.cond2
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bb.cond2:
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br i1 %cond2, label %exit, label %bb.cond1again, !prof !3
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; CHECK: set edge bb.cond2.thread -> 0 successor probability to 0x79b9d244 / 0x80000000
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; CHECK: set edge bb.cond2.thread -> 1 successor probability to 0x06462dbc / 0x80000000 = 4.90
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bb.cond1again:
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br i1 %cond1, label %bb.f3, label %bb.f4, !prof !4
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bb.f3:
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call void @f3()
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br label %exit
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bb.f4:
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call void @f4()
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br label %exit
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exit:
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ret void
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}
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declare void @f1()
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declare void @f2()
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declare void @f3()
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declare void @f4()
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!0 = !{!"function_entry_count", i64 15985}
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!1 = !{!"foo.cpp:foo"}
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!2 = !{!"branch_weights", i32 0, i32 36865}
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!3 = !{!"branch_weights", i32 35058, i32 1807}
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!4 = !{!"branch_weights", i32 1807, i32 35058}
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