1 ; Test strcmp using CLST, i32 version. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 declare signext i32 @strcmp(i8 *%src1, i8 *%src2) 6 7 ; Check a case where the result is used as an integer. 8 define i32 @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 %r2, [[REG]], 31 18 ; CHECK: br %r14 19 %res = call i32 @strcmp(i8 *%src1, i8 *%src2) 20 ret i32 %res 21 } 22 23 ; Check a case where the result is tested for equality. 24 define void @f2(i8 *%src1, i8 *%src2, i32 *%dest) { 25 ; CHECK-LABEL: f2: 26 ; CHECK: lhi %r0, 0 27 ; CHECK: [[LABEL:\.[^:]*]]: 28 ; CHECK: clst %r2, %r3 29 ; CHECK-NEXT: jo [[LABEL]] 30 ; CHECK-NEXT: BB#{{[0-9]+}} 31 ; CHECK-NEXT: je {{\.L.*}} 32 ; CHECK: br %r14 33 %res = call i32 @strcmp(i8 *%src1, i8 *%src2) 34 %cmp = icmp eq i32 %res, 0 35 br i1 %cmp, label %exit, label %store 36 37 store: 38 store i32 0, i32 *%dest 39 br label %exit 40 41 exit: 42 ret void 43 } 44 45 ; Test a case where the result is used both as an integer and for 46 ; branching. 47 define i32 @f3(i8 *%src1, i8 *%src2, i32 *%dest) { 48 ; CHECK-LABEL: f3: 49 ; CHECK: lhi %r0, 0 50 ; CHECK: [[LABEL:\.[^:]*]]: 51 ; CHECK: clst %r2, %r3 52 ; CHECK-NEXT: jo [[LABEL]] 53 ; CHECK-NEXT: BB#{{[0-9]+}} 54 ; CHECK-NEXT: ipm [[REG:%r[0-5]]] 55 ; CHECK: srl [[REG]], 28 56 ; CHECK: rll %r2, [[REG]], 31 57 ; CHECK: jl {{\.L*}} 58 ; CHECK: br %r14 59 entry: 60 %res = call i32 @strcmp(i8 *%src1, i8 *%src2) 61 %cmp = icmp slt i32 %res, 0 62 br i1 %cmp, label %exit, label %store 63 64 store: 65 store i32 0, i32 *%dest 66 br label %exit 67 68 exit: 69 ret i32 %res 70 } 71
