1; Test 64-bit comparisons in which the second operand is a PC-relative 2; variable. 3; 4; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 6@g = global i64 1 7@h = global i64 1, align 4, section "foo" 8 9; Check signed comparisons. 10define i64 @f1(i64 %src1) { 11; CHECK-LABEL: f1: 12; CHECK: cgrl %r2, g 13; CHECK-NEXT: blr %r14 14; CHECK: br %r14 15entry: 16 %src2 = load i64, i64 *@g 17 %cond = icmp slt i64 %src1, %src2 18 br i1 %cond, label %exit, label %mulb 19mulb: 20 %mul = mul i64 %src1, %src1 21 br label %exit 22exit: 23 %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] 24 ret i64 %res 25} 26 27; Check unsigned comparisons. 28define i64 @f2(i64 %src1) { 29; CHECK-LABEL: f2: 30; CHECK: clgrl %r2, g 31; CHECK-NEXT: blr %r14 32; CHECK: br %r14 33entry: 34 %src2 = load i64, i64 *@g 35 %cond = icmp ult i64 %src1, %src2 36 br i1 %cond, label %exit, label %mulb 37mulb: 38 %mul = mul i64 %src1, %src1 39 br label %exit 40exit: 41 %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] 42 ret i64 %res 43} 44 45; Check equality, which can use CRL or CLRL. 46define i64 @f3(i64 %src1) { 47; CHECK-LABEL: f3: 48; CHECK: c{{l?}}grl %r2, g 49; CHECK-NEXT: ber %r14 50; CHECK: br %r14 51entry: 52 %src2 = load i64, i64 *@g 53 %cond = icmp eq i64 %src1, %src2 54 br i1 %cond, label %exit, label %mulb 55mulb: 56 %mul = mul i64 %src1, %src1 57 br label %exit 58exit: 59 %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] 60 ret i64 %res 61} 62 63; ...likewise inequality. 64define i64 @f4(i64 %src1) { 65; CHECK-LABEL: f4: 66; CHECK: c{{l?}}grl %r2, g 67; CHECK-NEXT: blhr %r14 68; CHECK: br %r14 69entry: 70 %src2 = load i64, i64 *@g 71 %cond = icmp ne i64 %src1, %src2 72 br i1 %cond, label %exit, label %mulb 73mulb: 74 %mul = mul i64 %src1, %src1 75 br label %exit 76exit: 77 %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] 78 ret i64 %res 79} 80 81; Repeat f1 with an unaligned address. 82define i64 @f5(i64 %src1) { 83; CHECK-LABEL: f5: 84; CHECK: larl [[REG:%r[0-5]]], h 85; CHECK: cg %r2, 0([[REG]]) 86; CHECK-NEXT: blr %r14 87; CHECK: br %r14 88entry: 89 %src2 = load i64, i64 *@h, align 4 90 %cond = icmp slt i64 %src1, %src2 91 br i1 %cond, label %exit, label %mulb 92mulb: 93 %mul = mul i64 %src1, %src1 94 br label %exit 95exit: 96 %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ] 97 ret i64 %res 98} 99 100; Check the comparison can be reversed if that allows CGRL to be used. 101define i64 @f6(i64 %src2) { 102; CHECK-LABEL: f6: 103; CHECK: cgrl %r2, g 104; CHECK-NEXT: bhr %r14 105; CHECK: br %r14 106entry: 107 %src1 = load i64, i64 *@g 108 %cond = icmp slt i64 %src1, %src2 109 br i1 %cond, label %exit, label %mulb 110mulb: 111 %mul = mul i64 %src2, %src2 112 br label %exit 113exit: 114 %res = phi i64 [ %src2, %entry ], [ %mul, %mulb ] 115 ret i64 %res 116} 117