1 ; Test strlen using SRST, i64 version. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 declare i64 @strlen(i8 *%src) 6 declare i64 @strnlen(i8 *%src, i64 %len) 7 8 ; Test strlen with its proper i64 prototype. It would also be valid for 9 ; the uses of %r3 and REG after the LGR to be swapped. 10 define i64 @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 i64 @strlen(i8 *%src) 22 ret i64 %res 23 } 24 25 ; Test strnlen with its proper i64 prototype. 26 define i64 @f2(i64 %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 i64 @strnlen(i8 *%src, i64 %len) 38 ret i64 %res 39 } 40
