| Richard Sandiford | bb83a50 | 2013-08-16 11:29:37 +0000 | [diff] [blame] | 1 | ; Test strcpy using MVST. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| 4 | |
| 5 | declare i8 *@strcpy(i8 *%dest, i8 *%src) |
| 6 | declare i8 *@stpcpy(i8 *%dest, i8 *%src) |
| 7 | |
| 8 | ; Check strcpy. |
| 9 | define i8 *@f1(i8 *%dest, i8 *%src) { |
| 10 | ; CHECK-LABEL: f1: |
| 11 | ; CHECK-DAG: lhi %r0, 0 |
| 12 | ; CHECK-DAG: lgr [[REG:%r[145]]], %r2 |
| 13 | ; CHECK: [[LABEL:\.[^:]*]]: |
| 14 | ; CHECK-NEXT: mvst [[REG]], %r3 |
| 15 | ; CHECK-NEXT: jo [[LABEL]] |
| 16 | ; CHECK-NOT: %r2 |
| 17 | ; CHECK: br %r14 |
| 18 | %res = call i8 *@strcpy(i8 *%dest, i8 *%src) |
| 19 | ret i8 *%res |
| 20 | } |
| 21 | |
| 22 | ; Check stpcpy. |
| 23 | define i8 *@f2(i8 *%dest, i8 *%src) { |
| 24 | ; CHECK-LABEL: f2: |
| 25 | ; CHECK: lhi %r0, 0 |
| 26 | ; CHECK: [[LABEL:\.[^:]*]]: |
| 27 | ; CHECK-NEXT: mvst %r2, %r3 |
| 28 | ; CHECK-NEXT: jo [[LABEL]] |
| 29 | ; CHECK-NOT: %r2 |
| 30 | ; CHECK: br %r14 |
| 31 | %res = call i8 *@stpcpy(i8 *%dest, i8 *%src) |
| 32 | ret i8 *%res |
| 33 | } |
| 34 | |
| 35 | ; Check correct operation with other loads and stores. The load must |
| 36 | ; come before the loop and the store afterwards. |
| 37 | define i32 @f3(i32 %dummy, i8 *%dest, i8 *%src, i32 *%resptr, i32 *%storeptr) { |
| 38 | ; CHECK-LABEL: f3: |
| 39 | ; CHECK-DAG: lhi %r0, 0 |
| 40 | ; CHECK-DAG: l %r2, 0(%r5) |
| 41 | ; CHECK: [[LABEL:\.[^:]*]]: |
| 42 | ; CHECK-NEXT: mvst %r3, %r4 |
| 43 | ; CHECK-NEXT: jo [[LABEL]] |
| 44 | ; CHECK: mvhi 0(%r6), 0 |
| 45 | ; CHECK: br %r14 |
| 46 | %res = load i32 *%resptr |
| 47 | %unused = call i8 *@strcpy(i8 *%dest, i8 *%src) |
| 48 | store i32 0, i32 *%storeptr |
| 49 | ret i32 %res |
| 50 | } |