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llvm-mirror/test/CodeGen/AArch64/jump-table-32.ll
Tim Northover 1bb14916f2 AArch64: support arm64_32, an ILP32 slice for watchOS.
This is the main CodeGen patch to support the arm64_32 watchOS ABI in LLVM.
FastISel is mostly disabled for now since it would generate incorrect code for
ILP32.

llvm-svn: 371722
2019-09-12 10:22:23 +00:00

43 lines
882 B
LLVM

; RUN: llc -verify-machineinstrs -o - %s -mtriple=arm64_32-apple-ios7.0 -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s
define i32 @test_jumptable(i32 %in) {
; CHECK: test_jumptable
switch i32 %in, label %def [
i32 0, label %lbl1
i32 1, label %lbl2
i32 2, label %lbl3
i32 4, label %lbl4
]
; CHECK: adrp [[JTPAGE:x[0-9]+]], LJTI0_0@PAGE
; CHECK: mov w[[INDEX:[0-9]+]], w0
; CHECK: add x[[JT:[0-9]+]], [[JTPAGE]], LJTI0_0@PAGEOFF
; CHECK: adr [[BASE_BLOCK:x[0-9]+]], LBB0_2
; CHECK: ldrb w[[OFFSET:[0-9]+]], [x[[JT]], x[[INDEX]]]
; CHECK: add [[DEST:x[0-9]+]], [[BASE_BLOCK]], x[[OFFSET]], lsl #2
; CHECK: br [[DEST]]
def:
ret i32 0
lbl1:
ret i32 1
lbl2:
ret i32 2
lbl3:
ret i32 4
lbl4:
ret i32 8
}
; CHECK: LJTI0_0:
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte
; CHECK-NEXT: .byte