1 # RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s 2 3 --- | 4 5 define i32 @test_jumptable(i32 %in) { 6 entry: 7 switch i32 %in, label %def [ 8 i32 0, label %lbl1 9 i32 1, label %lbl2 10 i32 2, label %lbl3 11 i32 3, label %lbl4 12 ] 13 14 def: 15 ret i32 0 16 17 lbl1: 18 ret i32 1 19 20 lbl2: 21 ret i32 2 22 23 lbl3: 24 ret i32 4 25 26 lbl4: 27 ret i32 8 28 } 29 30 ... 31 --- 32 name: test_jumptable 33 jumpTable: 34 kind: label-difference32 35 entries: 36 - id: 0 37 blocks: [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ] 38 body: | 39 bb.0.entry: 40 successors: %bb.2.def, %bb.1.entry 41 42 %eax = MOV32rr %edi, implicit-def %rax 43 CMP32ri8 %edi, 3, implicit-def %eflags 44 JA_1 %bb.2.def, implicit %eflags 45 46 bb.1.entry: 47 successors: %bb.3.lbl1, %bb.4.lbl2, %bb.5.lbl3, %bb.6.lbl4 48 ; CHECK: [[@LINE+1]]:31: use of undefined jump table '%jump-table.2' 49 %rcx = LEA64r %rip, 1, _, %jump-table.2, _ 50 %rax = MOVSX64rm32 %rcx, 4, %rax, 0, _ 51 %rax = ADD64rr %rax, %rcx, implicit-def %eflags 52 JMP64r %rax 53 54 bb.2.def: 55 %eax = MOV32r0 implicit-def %eflags 56 RETQ %eax 57 58 bb.3.lbl1: 59 %eax = MOV32ri 1 60 RETQ %eax 61 62 bb.4.lbl2: 63 %eax = MOV32ri 2 64 RETQ %eax 65 66 bb.5.lbl3: 67 %eax = MOV32ri 4 68 RETQ %eax 69 70 bb.6.lbl4: 71 %eax = MOV32ri 8 72 RETQ %eax 73 ... 74
