1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -mtriple=x86_64-pc-linux-gnu -tail-merge-threshold 2 < %s | FileCheck %s 3 4; Test that we still do some merging if a block has more than 5; tail-merge-threshold predecessors. 6 7declare void @bar() 8 9define void @foo(i32 %xxx) nounwind { 10; CHECK-LABEL: foo: 11; CHECK: # %bb.0: 12; CHECK-NEXT: pushq %rax 13; CHECK-NEXT: cmpl $3, %edi 14; CHECK-NEXT: ja .LBB0_4 15; CHECK-NEXT: # %bb.1: 16; CHECK-NEXT: movl %edi, %eax 17; CHECK-NEXT: jmpq *.LJTI0_0(,%rax,8) 18; CHECK-NEXT: .LBB0_3: # %bb3 19; CHECK-NEXT: callq bar@PLT 20; CHECK-NEXT: popq %rax 21; CHECK-NEXT: retq 22; CHECK-NEXT: .LBB0_4: # %bb4 23; CHECK-NEXT: callq bar@PLT 24; CHECK-NEXT: popq %rax 25; CHECK-NEXT: retq 26 switch i32 %xxx, label %bb4 [ 27 i32 0, label %bb0 28 i32 1, label %bb1 29 i32 2, label %bb2 30 i32 3, label %bb3 31 ] 32 33bb0: 34 call void @bar() 35 br label %bb5 36 37bb1: 38 call void @bar() 39 br label %bb5 40 41bb2: 42 call void @bar() 43 br label %bb5 44 45bb3: 46 call void @bar() 47 br label %bb5 48 49bb4: 50 call void @bar() 51 br label %bb5 52 53bb5: 54 ret void 55} 56