llvm-project/llvm/test/CodeGen/MIR/X86/jump-table-info.mir

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# RUN: llc -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
# This test ensures that the MIR parser parses the jump table info correctly.
--- |
define i32 @test_jumptable(i32 %in) {
entry:
switch i32 %in, label %def [
i32 0, label %lbl1
i32 1, label %lbl2
i32 2, label %lbl3
i32 3, label %lbl4
]
def:
ret i32 0
lbl1:
ret i32 1
lbl2:
ret i32 2
lbl3:
ret i32 4
lbl4:
ret i32 8
}
...
---
name: test_jumptable
# CHECK: jumpTable:
# CHECK-NEXT: kind: label-difference32
# CHECK-NEXT: entries:
# CHECK-NEXT: - id: 0
# CHECK-NEXT: blocks: [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ]
# CHECK_NEXT: body:
jumpTable:
kind: label-difference32
entries:
- id: 0
blocks: [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ]
body:
- id: 0
name: entry
successors: [ '%bb.2.def', '%bb.1.entry' ]
- id: 1
name: entry
successors: [ '%bb.3.lbl1', '%bb.4.lbl2', '%bb.5.lbl3', '%bb.6.lbl4' ]
- id: 2
name: def
- id: 3
name: lbl1
- id: 4
name: lbl2
- id: 5
name: lbl3
- id: 6
name: lbl4
...