1 ; Test 32-bit comparisons in which the second operand is zero-extended 2 ; from a PC-relative i16. 3 ; 4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 6 @g = global i16 1 7 @h = global i16 1, align 1, section "foo" 8 9 ; Check unsigned comparison. 10 define i32 @f1(i32 %src1) { 11 ; CHECK-LABEL: f1: 12 ; CHECK: clhrl %r2, g 13 ; CHECK-NEXT: jl 14 ; CHECK: br %r14 15 entry: 16 %val = load i16 , i16 *@g 17 %src2 = zext i16 %val to i32 18 %cond = icmp ult i32 %src1, %src2 19 br i1 %cond, label %exit, label %mulb 20 mulb: 21 %mul = mul i32 %src1, %src1 22 br label %exit 23 exit: 24 %tmp = phi i32 [ %src1, %entry ], [ %mul, %mulb ] 25 %res = add i32 %tmp, 1 26 ret i32 %res 27 } 28 29 ; Check signed comparison. 30 define i32 @f2(i32 %src1) { 31 ; CHECK-LABEL: f2: 32 ; CHECK-NOT: clhrl 33 ; CHECK: br %r14 34 entry: 35 %val = load i16 , i16 *@g 36 %src2 = zext i16 %val to i32 37 %cond = icmp slt i32 %src1, %src2 38 br i1 %cond, label %exit, label %mulb 39 mulb: 40 %mul = mul i32 %src1, %src1 41 br label %exit 42 exit: 43 %tmp = phi i32 [ %src1, %entry ], [ %mul, %mulb ] 44 %res = add i32 %tmp, 1 45 ret i32 %res 46 } 47 48 ; Check equality. 49 define i32 @f3(i32 %src1) { 50 ; CHECK-LABEL: f3: 51 ; CHECK: clhrl %r2, g 52 ; CHECK-NEXT: je 53 ; CHECK: br %r14 54 entry: 55 %val = load i16 , i16 *@g 56 %src2 = zext i16 %val to i32 57 %cond = icmp eq i32 %src1, %src2 58 br i1 %cond, label %exit, label %mulb 59 mulb: 60 %mul = mul i32 %src1, %src1 61 br label %exit 62 exit: 63 %tmp = phi i32 [ %src1, %entry ], [ %mul, %mulb ] 64 %res = add i32 %tmp, 1 65 ret i32 %res 66 } 67 68 ; Check inequality. 69 define i32 @f4(i32 %src1) { 70 ; CHECK-LABEL: f4: 71 ; CHECK: clhrl %r2, g 72 ; CHECK-NEXT: jlh 73 ; CHECK: br %r14 74 entry: 75 %val = load i16 , i16 *@g 76 %src2 = zext i16 %val to i32 77 %cond = icmp ne i32 %src1, %src2 78 br i1 %cond, label %exit, label %mulb 79 mulb: 80 %mul = mul i32 %src1, %src1 81 br label %exit 82 exit: 83 %tmp = phi i32 [ %src1, %entry ], [ %mul, %mulb ] 84 %res = add i32 %tmp, 1 85 ret i32 %res 86 } 87 88 ; Repeat f1 with an unaligned address. 89 define i32 @f5(i32 %src1) { 90 ; CHECK-LABEL: f5: 91 ; CHECK: lgrl [[REG:%r[0-5]]], h@GOT 92 ; CHECK: llh [[VAL:%r[0-5]]], 0([[REG]]) 93 ; CHECK: clrjl %r2, [[VAL]], 94 ; CHECK: br %r14 95 entry: 96 %val = load i16 , i16 *@h, align 1 97 %src2 = zext i16 %val to i32 98 %cond = icmp ult i32 %src1, %src2 99 br i1 %cond, label %exit, label %mulb 100 mulb: 101 %mul = mul i32 %src1, %src1 102 br label %exit 103 exit: 104 %tmp = phi i32 [ %src1, %entry ], [ %mul, %mulb ] 105 %res = add i32 %tmp, 1 106 ret i32 %res 107 } 108 109 ; Check the comparison can be reversed if that allows CLHRL to be used. 110 define i32 @f6(i32 %src2) { 111 ; CHECK-LABEL: f6: 112 ; CHECK: clhrl %r2, g 113 ; CHECK-NEXT: jh {{\.L.*}} 114 ; CHECK: br %r14 115 entry: 116 %val = load i16 , i16 *@g 117 %src1 = zext i16 %val to i32 118 %cond = icmp ult i32 %src1, %src2 119 br i1 %cond, label %exit, label %mulb 120 mulb: 121 %mul = mul i32 %src2, %src2 122 br label %exit 123 exit: 124 %tmp = phi i32 [ %src2, %entry ], [ %mul, %mulb ] 125 %res = add i32 %tmp, 1 126 ret i32 %res 127 } 128
