| Richard Sandiford | 0dec06a | 2013-08-16 11:41:43 +0000 | [diff] [blame] | 1 | ; Test strlen using SRST, i32 version. |
| 2 | ; |
| 3 | ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s |
| 4 | |
| 5 | declare i32 @strlen(i8 *%src) |
| 6 | declare i32 @strnlen(i8 *%src, i32 %len) |
| 7 | |
| 8 | ; Test strlen with an i32-based prototype. It would also be valid for |
| 9 | ; the uses of %r3 and REG after the LGR to be swapped. |
| 10 | define i32 @f1(i32 %dummy, i8 *%src) { |
| 11 | ; CHECK-LABEL: f1: |
| 12 | ; CHECK-DAG: lhi %r0, 0 |
| 13 | ; CHECK-DAG: lghi %r2, 0 |
| 14 | ; CHECK-DAG: lgr [[REG:%r[145]]], %r3 |
| 15 | ; CHECK: [[LABEL:\.[^:]*]]: |
| 16 | ; CHECK-NEXT: srst %r2, [[REG]] |
| 17 | ; CHECK-NEXT: jo [[LABEL]] |
| 18 | ; CHECK-NEXT: BB#{{[0-9]+}} |
| 19 | ; CHECK-NEXT: sgr %r2, %r3 |
| 20 | ; CHECK: br %r14 |
| 21 | %res = call i32 @strlen(i8 *%src) |
| 22 | ret i32 %res |
| 23 | } |
| 24 | |
| 25 | ; Test strnlen with an i32-based prototype. |
| 26 | define i32 @f2(i32 zeroext %len, i8 *%src) { |
| 27 | ; CHECK-LABEL: f2: |
| 28 | ; CHECK-DAG: agr %r2, %r3 |
| 29 | ; CHECK-DAG: lhi %r0, 0 |
| 30 | ; CHECK-DAG: lgr [[REG:%r[145]]], %r3 |
| 31 | ; CHECK: [[LABEL:\.[^:]*]]: |
| 32 | ; CHECK-NEXT: srst %r2, [[REG]] |
| 33 | ; CHECK-NEXT: jo [[LABEL]] |
| 34 | ; CHECK-NEXT: BB#{{[0-9]+}} |
| 35 | ; CHECK-NEXT: sgr %r2, %r3 |
| 36 | ; CHECK: br %r14 |
| 37 | %res = call i32 @strnlen(i8 *%src, i32 %len) |
| 38 | ret i32 %res |
| 39 | } |