| ; RUN: llc < %s -mtriple=aarch64 -mattr=+mte -aarch64-order-frame-objects=1 | FileCheck %s |
| |
| declare void @use(i8* %p) |
| declare void @llvm.aarch64.settag(i8* %p, i64 %a) |
| declare void @llvm.aarch64.settag.zero(i8* %p, i64 %a) |
| |
| ; Two loops of size 256; the second loop updates SP. |
| ; After frame reordering, two loops can be merged into one. |
| define void @stg128_128_gap_128_128() { |
| entry: |
| ; CHECK-LABEL: stg128_128_gap_128_128: |
| ; CHECK: mov x8, #512 |
| ; CHECK: st2g sp, [sp], #32 |
| ; CHECK: sub x8, x8, #32 |
| ; CHECK: cbnz x8, |
| ; CHECK: ret |
| %a = alloca i8, i32 128, align 16 |
| %a2 = alloca i8, i32 128, align 16 |
| %b = alloca i8, i32 32, align 16 |
| %c = alloca i8, i32 128, align 16 |
| %c2 = alloca i8, i32 128, align 16 |
| call void @use(i8* %b) |
| call void @llvm.aarch64.settag(i8* %a, i64 128) |
| call void @llvm.aarch64.settag(i8* %a2, i64 128) |
| call void @llvm.aarch64.settag(i8* %c, i64 128) |
| call void @llvm.aarch64.settag(i8* %c2, i64 128) |
| ret void |
| } |
| |
| define void @stg2(i1 %flag) { |
| entry: |
| ; CHECK-LABEL: stg2: |
| %a = alloca i8, i32 160, align 16 |
| %a2 = alloca i8, i32 160, align 16 |
| %b = alloca i8, i32 32, align 16 |
| %c = alloca i8, i32 128, align 16 |
| %c2 = alloca i8, i32 128, align 16 |
| call void @use(i8* %b) |
| br i1 %flag, label %if.then, label %if.else |
| |
| if.then: |
| ; CHECK: mov x8, #320 |
| ; CHECK: sub x8, x8, #32 |
| ; CHECK: st2g x9, [x9], #32 |
| ; CHECK: cbnz x8, |
| call void @llvm.aarch64.settag(i8* %a, i64 160) |
| call void @llvm.aarch64.settag(i8* %a2, i64 160) |
| br label %if.end |
| |
| if.else: |
| ; CHECK: mov x8, #256 |
| ; CHECK: sub x8, x8, #32 |
| ; CHECK: st2g x9, [x9], #32 |
| ; CHECK: cbnz x8, |
| call void @llvm.aarch64.settag(i8* %c, i64 128) |
| call void @llvm.aarch64.settag(i8* %c2, i64 128) |
| br label %if.end |
| |
| if.end: |
| ; CHECK: mov x8, #576 |
| ; CHECK: st2g sp, [sp], #32 |
| ; CHECK: sub x8, x8, #32 |
| ; CHECK: cbnz x8, |
| call void @llvm.aarch64.settag(i8* %a, i64 160) |
| call void @llvm.aarch64.settag(i8* %a2, i64 160) |
| call void @llvm.aarch64.settag(i8* %c, i64 128) |
| call void @llvm.aarch64.settag(i8* %c2, i64 128) |
| |
| ; CHECK: ret |
| ret void |
| } |