1; Test strcmp using CLST, i32 version. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5declare signext i32 @strcmp(i8 *%src1, i8 *%src2) 6 7; Check a case where the result is used as an integer. 8define 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. 24define 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 37store: 38 store i32 0, i32 *%dest 39 br label %exit 40 41exit: 42 ret void 43} 44 45; Test a case where the result is used both as an integer and for 46; branching. 47define 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 59entry: 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 64store: 65 store i32 0, i32 *%dest 66 br label %exit 67 68exit: 69 ret i32 %res 70} 71