forked from OSchip/llvm-project
48 lines
1.2 KiB
LLVM
48 lines
1.2 KiB
LLVM
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; RUN: opt < %s -passes='require<profile-summary>,cgscc(inline)' -inline-threshold=100 -inline-cold-callsite-threshold=0 -S | FileCheck %s
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; This tests that a cold callsite gets the inline-cold-callsite-threshold
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; and does not get inlined. Another callsite to an identical callee that
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; is not cold gets inlined because cost is below the inline-threshold.
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define void @callee() {
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call void @extern()
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call void @extern()
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ret void
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}
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declare void @extern()
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declare i1 @ext(i32)
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; CHECK-LABEL: caller
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define i32 @caller(i32 %n) {
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entry:
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%cmp4 = icmp sgt i32 %n, 0
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br i1 %cmp4, label %for.body, label %for.cond.cleanup
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for.cond.cleanup:
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ret i32 0
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for.body:
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%i.05 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
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; CHECK: %call = tail call
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%call = tail call zeroext i1 @ext(i32 %i.05)
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; CHECK-NOT: call void @callee
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; CHECK-NEXT: call void @extern
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call void @callee()
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br i1 %call, label %cold, label %for.inc, !prof !0
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cold:
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; CHECK: call void @callee
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call void @callee()
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br label %for.inc
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for.inc:
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%inc = add nuw nsw i32 %i.05, 1
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%exitcond = icmp eq i32 %inc, %n
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br i1 %exitcond, label %for.cond.cleanup, label %for.body
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}
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!0 = !{!"branch_weights", i32 1, i32 2000}
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