xref: /llvm-project/llvm/test/CodeGen/ARM/prera-ldst-aliasing.mir (revision a1cdb323e2610a8e9d8f67382c27172f5f3f3511) 
1# RUN: llc -run-pass arm-prera-ldst-opt %s -o - | FileCheck %s
2--- |
3  target triple = "thumbv7---eabi"
4
5  define void @ldrd_strd_aa(ptr noalias nocapture %x, ptr noalias nocapture readonly %y) {
6  entry:
7    %0 = load i32, ptr %y, align 4
8    store i32 %0, ptr %x, align 4
9    %arrayidx2 = getelementptr inbounds i32, ptr %y, i32 1
10    %1 = load i32, ptr %arrayidx2, align 4
11    %arrayidx3 = getelementptr inbounds i32, ptr %x, i32 1
12    store i32 %1, ptr %arrayidx3, align 4
13    ret void
14  }
15...
16---
17name:            ldrd_strd_aa
18alignment:       2
19tracksRegLiveness: true
20liveins:
21  - { reg: '$r0', virtual-reg: '%0' }
22  - { reg: '$r1', virtual-reg: '%1' }
23body:             |
24  bb.0.entry:
25    liveins: $r0, $r1
26
27    %1 : gpr = COPY $r1
28    %0 : gpr = COPY $r0
29    %2 : gpr = t2LDRi12 %1, 0, 14, $noreg :: (load (s32) from %ir.y)
30    t2STRi12 killed %2, %0, 0, 14, $noreg :: (store (s32) into %ir.x)
31    %3 : gpr = t2LDRi12 %1, 4, 14, $noreg :: (load (s32) from %ir.arrayidx2)
32    t2STRi12 killed %3, %0, 4, 14, $noreg :: (store (s32) into %ir.arrayidx3)
33    ; CHECK: t2LDRDi8
34    ; CHECK-NEXT: t2STRDi8
35    tBX_RET 14, $noreg
36
37...
38
39