43 lines
875 B
LLVM
43 lines
875 B
LLVM
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; RUN: llc -mcpu=corei7 -mtriple=x86_64-linux -force-precise-rotation-cost < %s | FileCheck %s
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define void @bar() {
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; Test that all edges in the loop chain are fall through with profile data.
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;
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; CHECK-LABEL: bar:
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; CHECK: latch
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; CHECK: header
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; CHECK: if.then
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; CHECK: end
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entry:
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br label %header
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header:
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call void @e()
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%call = call zeroext i1 @a()
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br i1 %call, label %if.then, label %latch, !prof !1
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if.then:
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call void @f()
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%call3 = call zeroext i1 @a()
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br i1 %call3, label %latch, label %end, !prof !2
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latch:
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call void @h()
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%call2 = call zeroext i1 @a()
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br i1 %call2, label %header, label %end, !prof !3
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end:
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ret void
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}
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declare zeroext i1 @a()
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declare void @e()
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declare void @f()
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declare void @g()
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declare void @h()
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!1 = !{!"branch_weights", i32 16, i32 16}
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!2 = !{!"branch_weights", i32 97, i32 3}
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!3 = !{!"branch_weights", i32 97, i32 3}
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