| ; RUN: llc -o - %s -mtriple=aarch64-none-linux-gnu -mattr=+force-32bit-jump-tables -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s |
| ; RUN: llc -o - %s -mtriple=aarch64-none-linux-gnu -mcpu=exynos-m1 -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s |
| ; RUN: llc -o - %s -mtriple=aarch64-none-linux-gnu -mcpu=exynos-m2 -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s |
| ; RUN: llc -o - %s -mtriple=aarch64-none-linux-gnu -mcpu=exynos-m3 -aarch64-enable-atomic-cfg-tidy=0 | FileCheck %s |
| |
| ; Exynos doesn't want jump tables to be compressed for now. |
| |
| define i32 @test_jumptable(i32 %in) { |
| switch i32 %in, label %def [ |
| i32 0, label %lbl1 |
| i32 1, label %lbl2 |
| i32 2, label %lbl3 |
| i32 4, label %lbl4 |
| ] |
| ; CHECK-LABEL: test_jumptable: |
| ; CHECK-NOT: ldrb |
| |
| def: |
| ret i32 0 |
| |
| lbl1: |
| ret i32 1 |
| |
| lbl2: |
| ret i32 2 |
| |
| lbl3: |
| ret i32 4 |
| |
| lbl4: |
| ret i32 8 |
| |
| } |
| |
| define i32 @test_jumptable_minsize(i32 %in) minsize { |
| switch i32 %in, label %def [ |
| i32 0, label %lbl1 |
| i32 1, label %lbl2 |
| i32 2, label %lbl3 |
| i32 4, label %lbl4 |
| ] |
| ; CHECK-LABEL: test_jumptable_minsize: |
| ; CHECK: adrp [[JTPAGE:x[0-9]+]], .LJTI1_0 |
| ; CHECK: add x[[JT:[0-9]+]], [[JTPAGE]], {{#?}}:lo12:.LJTI1_0 |
| ; CHECK: adr [[PCBASE:x[0-9]+]], [[JTBASE:.LBB[0-9]+_[0-9]+]] |
| ; CHECK: ldrb w[[OFFSET:[0-9]+]], [x[[JT]], {{x[0-9]+}}] |
| ; CHECK: add [[DEST:x[0-9]+]], [[PCBASE]], 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 |
| |
| } |