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; RUN: llc %s -O2 -print-machineinstrs -mtriple=aarch64-linux-gnu -jump-table-density=40 -min-jump-table-entries=0 -o /dev/null 2> %t; FileCheck %s --check-prefixes=CHECK,CHECK0 < %t
; RUN: llc %s -O2 -print-machineinstrs -mtriple=aarch64-linux-gnu -jump-table-density=40 -min-jump-table-entries=4 -o /dev/null 2> %t; FileCheck %s --check-prefixes=CHECK,CHECK4 < %t
; RUN: llc %s -O2 -print-machineinstrs -mtriple=aarch64-linux-gnu -jump-table-density=40 -min-jump-table-entries=8 -o /dev/null 2> %t; FileCheck %s --check-prefixes=CHECK,CHECK8 < %t
declare void @ext(i32, i32)
define i32 @jt2(i32 %a, i32 %b) {
entry:
switch i32 %a, label %return [
i32 1, label %bb1
i32 2, label %bb2
]
; CHECK-LABEL: function jt2:
; CHECK0-NEXT: Jump Tables:
; CHECK0-NEXT: %jump-table.0:
; CHECK0-NOT: %jump-table.1:
; CHECK4-NOT: {{^}}Jump Tables:
; CHECK8-NOT: {{^}}Jump Tables:
bb1: tail call void @ext(i32 1, i32 0) br label %return
bb2: tail call void @ext(i32 2, i32 2) br label %return
return: ret i32 %b
}
define i32 @jt4(i32 %a, i32 %b) {
entry:
switch i32 %a, label %return [
i32 1, label %bb1
i32 2, label %bb2
i32 3, label %bb3
i32 4, label %bb4
]
; CHECK-LABEL: function jt4:
; CHECK0-NEXT: Jump Tables:
; CHECK0-NEXT: %jump-table.0:
; CHECK0-NOT: %jump-table.1:
; CHECK4-NEXT: Jump Tables:
; CHECK4-NEXT: %jump-table.0:
; CHECK4-NOT: %jump-table.1:
; CHECK8-NOT: {{^}}Jump Tables:
bb1: tail call void @ext(i32 1, i32 0) br label %return
bb2: tail call void @ext(i32 3, i32 2) br label %return
bb3: tail call void @ext(i32 4, i32 4) br label %return
bb4: tail call void @ext(i32 5, i32 6) br label %return
return: ret i32 %b
}
define i32 @jt8(i32 %a, i32 %b) {
entry:
switch i32 %a, label %return [
i32 1, label %bb1
i32 2, label %bb2
i32 3, label %bb3
i32 4, label %bb4
i32 5, label %bb5
i32 6, label %bb6
i32 7, label %bb7
i32 8, label %bb8
]
; CHECK-LABEL: function jt8:
; CHECK-NEXT: Jump Tables:
; CHECK-NEXT: %jump-table.0:
; CHECK-NOT: %jump-table.1:
bb1: tail call void @ext(i32 1, i32 0) br label %return
bb2: tail call void @ext(i32 2, i32 2) br label %return
bb3: tail call void @ext(i32 3, i32 4) br label %return
bb4: tail call void @ext(i32 4, i32 6) br label %return
bb5: tail call void @ext(i32 5, i32 8) br label %return
bb6: tail call void @ext(i32 6, i32 10) br label %return
bb7: tail call void @ext(i32 7, i32 12) br label %return
bb8: tail call void @ext(i32 8, i32 14) br label %return
return: ret i32 %b
}
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