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45 lines
669 B
LLVM
45 lines
669 B
LLVM
; RUN: llc -mtriple=x86_64-pc-linux-gnu -tail-merge-threshold 2 < %s | FileCheck %s
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; Test that we still do some merging if a block has more than
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; tail-merge-threshold predecessors.
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; CHECK: callq bar
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; CHECK: callq bar
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; CHECK: callq bar
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; CHECK-NOT: callq
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declare void @bar()
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define void @foo(i32 %xxx) {
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entry:
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switch i32 %xxx, label %bb4 [
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i32 0, label %bb0
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i32 1, label %bb1
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i32 2, label %bb2
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i32 3, label %bb3
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]
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bb0:
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call void @bar()
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br label %bb5
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bb1:
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call void @bar()
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br label %bb5
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bb2:
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call void @bar()
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br label %bb5
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bb3:
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call void @bar()
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br label %bb5
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bb4:
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call void @bar()
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br label %bb5
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bb5:
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ret void
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}
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