| ; RUN: llc %s -o - | FileCheck %s |
| |
| target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64" |
| target triple = "thumbv6m-none-unknown-musleabi" |
| |
| @a = global i8 undef, align 4 |
| |
| ; Check that store-merging generates a single str i32 rather than strb+strb+strh, |
| ; i.e., -1 is not moved by constant-hoisting. |
| ; CHECK: movs [[R1:r[0-9]+]], #255 |
| ; CHECK: lsls [[R2:r[0-9]+]], [[R1]], #16 |
| ; CHECK: str [[R2]] |
| ; CHECK: movs [[R3:r[0-9]+]], #255 |
| ; CHECK: lsls [[R4:r[0-9]+]], [[R3]], #16 |
| ; CHECK: str [[R4]] |
| ; CHECK-NOT: strh |
| ; CHECK-NOT: strb |
| |
| define void @ham() { |
| bb: |
| br i1 undef, label %bb1, label %bb2 |
| |
| bb1: |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 1), align 1 |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 0), align 4 |
| store i8 -1, i8* getelementptr inbounds (i8, i8* @a, i32 2), align 2 |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 3), align 1 |
| br label %bb3 |
| |
| bb2: |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 9), align 1 |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 8), align 4 |
| store i8 -1, i8* getelementptr inbounds (i8, i8* @a, i32 10), align 2 |
| store i8 0, i8* getelementptr inbounds (i8, i8* @a, i32 11), align 1 |
| br label %bb3 |
| |
| bb3: |
| ret void |
| } |
