1 ; Test 32-bit equality comparisons that are really between a memory byte 2 ; and a constant. 3 ; 4 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 5 6 ; Check the low end of the 8-bit unsigned range, with zero extension. 7 define double @f1(double %a, double %b, i8 *%ptr) { 8 ; CHECK-LABEL: f1: 9 ; CHECK: cli 0(%r2), 0 10 ; CHECK-NEXT: je 11 ; CHECK: br %r14 12 %val = load i8 *%ptr 13 %ext = zext i8 %val to i32 14 %cond = icmp eq i32 %ext, 0 15 %res = select i1 %cond, double %a, double %b 16 ret double %res 17 } 18 19 ; Check the high end of the 8-bit unsigned range, with zero extension. 20 define double @f2(double %a, double %b, i8 *%ptr) { 21 ; CHECK-LABEL: f2: 22 ; CHECK: cli 0(%r2), 255 23 ; CHECK-NEXT: je 24 ; CHECK: br %r14 25 %val = load i8 *%ptr 26 %ext = zext i8 %val to i32 27 %cond = icmp eq i32 %ext, 255 28 %res = select i1 %cond, double %a, double %b 29 ret double %res 30 } 31 32 ; Check the next value up, with zero extension. The condition is always false. 33 define double @f3(double %a, double %b, i8 *%ptr) { 34 ; CHECK-LABEL: f3: 35 ; CHECK-NOT: cli 36 ; CHECK: br %r14 37 %val = load i8 *%ptr 38 %ext = zext i8 %val to i32 39 %cond = icmp eq i32 %ext, 256 40 %res = select i1 %cond, double %a, double %b 41 ret double %res 42 } 43 44 ; Check comparisons with -1, with zero extension. 45 ; This condition is also always false. 46 define double @f4(double %a, double %b, i8 *%ptr) { 47 ; CHECK-LABEL: f4: 48 ; CHECK-NOT: cli 49 ; CHECK: br %r14 50 %val = load i8 *%ptr 51 %ext = zext i8 %val to i32 52 %cond = icmp eq i32 %ext, -1 53 %res = select i1 %cond, double %a, double %b 54 ret double %res 55 } 56 57 ; Check comparisons with 0, using sign extension. 58 define double @f5(double %a, double %b, i8 *%ptr) { 59 ; CHECK-LABEL: f5: 60 ; CHECK: cli 0(%r2), 0 61 ; CHECK-NEXT: je 62 ; CHECK: br %r14 63 %val = load i8 *%ptr 64 %ext = sext i8 %val to i32 65 %cond = icmp eq i32 %ext, 0 66 %res = select i1 %cond, double %a, double %b 67 ret double %res 68 } 69 70 ; Check the high end of the signed 8-bit range, using sign extension. 71 define double @f6(double %a, double %b, i8 *%ptr) { 72 ; CHECK-LABEL: f6: 73 ; CHECK: cli 0(%r2), 127 74 ; CHECK-NEXT: je 75 ; CHECK: br %r14 76 %val = load i8 *%ptr 77 %ext = sext i8 %val to i32 78 %cond = icmp eq i32 %ext, 127 79 %res = select i1 %cond, double %a, double %b 80 ret double %res 81 } 82 83 ; Check the next value up, using sign extension. 84 ; The condition is always false. 85 define double @f7(double %a, double %b, i8 *%ptr) { 86 ; CHECK-LABEL: f7: 87 ; CHECK-NOT: cli 88 ; CHECK: br %r14 89 %val = load i8 *%ptr 90 %ext = sext i8 %val to i32 91 %cond = icmp eq i32 %ext, 128 92 %res = select i1 %cond, double %a, double %b 93 ret double %res 94 } 95 96 ; Check comparisons with -1, using sign extension. 97 define double @f8(double %a, double %b, i8 *%ptr) { 98 ; CHECK-LABEL: f8: 99 ; CHECK: cli 0(%r2), 255 100 ; CHECK-NEXT: je 101 ; CHECK: br %r14 102 %val = load i8 *%ptr 103 %ext = sext i8 %val to i32 104 %cond = icmp eq i32 %ext, -1 105 %res = select i1 %cond, double %a, double %b 106 ret double %res 107 } 108 109 ; Check the low end of the signed 8-bit range, using sign extension. 110 define double @f9(double %a, double %b, i8 *%ptr) { 111 ; CHECK-LABEL: f9: 112 ; CHECK: cli 0(%r2), 128 113 ; CHECK-NEXT: je 114 ; CHECK: br %r14 115 %val = load i8 *%ptr 116 %ext = sext i8 %val to i32 117 %cond = icmp eq i32 %ext, -128 118 %res = select i1 %cond, double %a, double %b 119 ret double %res 120 } 121 122 ; Check the next value down, using sign extension. 123 ; The condition is always false. 124 define double @f10(double %a, double %b, i8 *%ptr) { 125 ; CHECK-LABEL: f10: 126 ; CHECK-NOT: cli 127 ; CHECK: br %r14 128 %val = load i8 *%ptr 129 %ext = sext i8 %val to i32 130 %cond = icmp eq i32 %ext, -129 131 %res = select i1 %cond, double %a, double %b 132 ret double %res 133 } 134
