56 lines
1.1 KiB
LLVM
56 lines
1.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; 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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declare void @bar()
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define void @foo(i32 %xxx) nounwind {
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; CHECK-LABEL: foo:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: cmpl $3, %edi
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; CHECK-NEXT: ja .LBB0_4
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: movl %edi, %eax
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; CHECK-NEXT: jmpq *.LJTI0_0(,%rax,8)
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; CHECK-NEXT: .LBB0_3: # %bb3
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; CHECK-NEXT: callq bar@PLT
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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; CHECK-NEXT: .LBB0_4: # %bb4
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; CHECK-NEXT: callq bar@PLT
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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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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