1 ; Test strcmp using CLST, i64 version. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 declare i64 @strcmp(i8 *%src1, i8 *%src2) 6 7 ; Check a case where the result is used as an integer. 8 define i64 @f1(i8 *%src1, i8 *%src2) { 9 ; CHECK-LABEL: f1: 10 ; CHECK: lhi %r0, 0 11 ; CHECK: [[LABEL:\.[^:]*]]: 12 ; CHECK: clst %r2, %r3 13 ; CHECK-NEXT: jo [[LABEL]] 14 ; CHECK-NEXT: BB#{{[0-9]+}} 15 ; CHECK-NEXT: ipm [[REG:%r[0-5]]] 16 ; CHECK: srl [[REG]], 28 17 ; CHECK: rll [[REG]], [[REG]], 31 18 ; CHECK: lgfr %r2, [[REG]] 19 ; CHECK: br %r14 20 %res = call i64 @strcmp(i8 *%src1, i8 *%src2) 21 ret i64 %res 22 } 23 24 ; Check a case where the result is tested for equality. 25 define void @f2(i8 *%src1, i8 *%src2, i64 *%dest) { 26 ; CHECK-LABEL: f2: 27 ; CHECK: lhi %r0, 0 28 ; CHECK: [[LABEL:\.[^:]*]]: 29 ; CHECK: clst %r2, %r3 30 ; CHECK-NEXT: jo [[LABEL]] 31 ; CHECK-NEXT: BB#{{[0-9]+}} 32 ; CHECK-NEXT: ber %r14 33 ; CHECK: br %r14 34 %res = call i64 @strcmp(i8 *%src1, i8 *%src2) 35 %cmp = icmp eq i64 %res, 0 36 br i1 %cmp, label %exit, label %store 37 38 store: 39 store i64 0, i64 *%dest 40 br label %exit 41 42 exit: 43 ret void 44 } 45 46 ; Test a case where the result is used both as an integer and for 47 ; branching. 48 define i64 @f3(i8 *%src1, i8 *%src2, i64 *%dest) { 49 ; CHECK-LABEL: f3: 50 ; CHECK: lhi %r0, 0 51 ; CHECK: [[LABEL:\.[^:]*]]: 52 ; CHECK: clst %r2, %r3 53 ; CHECK-NEXT: jo [[LABEL]] 54 ; CHECK-NEXT: BB#{{[0-9]+}} 55 ; CHECK-NEXT: ipm [[REG:%r[0-5]]] 56 ; CHECK: srl [[REG]], 28 57 ; CHECK: rll [[REG]], [[REG]], 31 58 ; CHECK: lgfr %r2, [[REG]] 59 ; CHECK: blr %r14 60 ; CHECK: br %r14 61 entry: 62 %res = call i64 @strcmp(i8 *%src1, i8 *%src2) 63 %cmp = icmp slt i64 %res, 0 64 br i1 %cmp, label %exit, label %store 65 66 store: 67 store i64 0, i64 *%dest 68 br label %exit 69 70 exit: 71 ret i64 %res 72 } 73
