1 ; Test 32-bit atomic minimum and maximum. Here we match the z10 versions, 2 ; which can't use LOCR. 3 ; 4 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s 5 6 ; Check signed minium. 7 define i32 @f1(i32 %dummy, i32 *%src, i32 %b) { 8 ; CHECK-LABEL: f1: 9 ; CHECK: l %r2, 0(%r3) 10 ; CHECK: [[LOOP:\.[^:]*]]: 11 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 12 ; CHECK: crjle %r2, %r4, [[KEEP:\..*]] 13 ; CHECK: lr [[NEW]], %r4 14 ; CHECK: cs %r2, [[NEW]], 0(%r3) 15 ; CHECK: jl [[LOOP]] 16 ; CHECK: br %r14 17 %res = atomicrmw min i32 *%src, i32 %b seq_cst 18 ret i32 %res 19 } 20 21 ; Check signed maximum. 22 define i32 @f2(i32 %dummy, i32 *%src, i32 %b) { 23 ; CHECK-LABEL: f2: 24 ; CHECK: l %r2, 0(%r3) 25 ; CHECK: [[LOOP:\.[^:]*]]: 26 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 27 ; CHECK: crjhe %r2, %r4, [[KEEP:\..*]] 28 ; CHECK: lr [[NEW]], %r4 29 ; CHECK: cs %r2, [[NEW]], 0(%r3) 30 ; CHECK: jl [[LOOP]] 31 ; CHECK: br %r14 32 %res = atomicrmw max i32 *%src, i32 %b seq_cst 33 ret i32 %res 34 } 35 36 ; Check unsigned minimum. 37 define i32 @f3(i32 %dummy, i32 *%src, i32 %b) { 38 ; CHECK-LABEL: f3: 39 ; CHECK: l %r2, 0(%r3) 40 ; CHECK: [[LOOP:\.[^:]*]]: 41 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 42 ; CHECK: clrjle %r2, %r4, [[KEEP:\..*]] 43 ; CHECK: lr [[NEW]], %r4 44 ; CHECK: cs %r2, [[NEW]], 0(%r3) 45 ; CHECK: jl [[LOOP]] 46 ; CHECK: br %r14 47 %res = atomicrmw umin i32 *%src, i32 %b seq_cst 48 ret i32 %res 49 } 50 51 ; Check unsigned maximum. 52 define i32 @f4(i32 %dummy, i32 *%src, i32 %b) { 53 ; CHECK-LABEL: f4: 54 ; CHECK: l %r2, 0(%r3) 55 ; CHECK: [[LOOP:\.[^:]*]]: 56 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 57 ; CHECK: clrjhe %r2, %r4, [[KEEP:\..*]] 58 ; CHECK: lr [[NEW]], %r4 59 ; CHECK: cs %r2, [[NEW]], 0(%r3) 60 ; CHECK: jl [[LOOP]] 61 ; CHECK: br %r14 62 %res = atomicrmw umax i32 *%src, i32 %b seq_cst 63 ret i32 %res 64 } 65 66 ; Check the high end of the aligned CS range. 67 define i32 @f5(i32 %dummy, i32 *%src, i32 %b) { 68 ; CHECK-LABEL: f5: 69 ; CHECK: l %r2, 4092(%r3) 70 ; CHECK: cs %r2, {{%r[0-9]+}}, 4092(%r3) 71 ; CHECK: br %r14 72 %ptr = getelementptr i32 *%src, i64 1023 73 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 74 ret i32 %res 75 } 76 77 ; Check the next word up, which requires CSY. 78 define i32 @f6(i32 %dummy, i32 *%src, i32 %b) { 79 ; CHECK-LABEL: f6: 80 ; CHECK: ly %r2, 4096(%r3) 81 ; CHECK: csy %r2, {{%r[0-9]+}}, 4096(%r3) 82 ; CHECK: br %r14 83 %ptr = getelementptr i32 *%src, i64 1024 84 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 85 ret i32 %res 86 } 87 88 ; Check the high end of the aligned CSY range. 89 define i32 @f7(i32 %dummy, i32 *%src, i32 %b) { 90 ; CHECK-LABEL: f7: 91 ; CHECK: ly %r2, 524284(%r3) 92 ; CHECK: csy %r2, {{%r[0-9]+}}, 524284(%r3) 93 ; CHECK: br %r14 94 %ptr = getelementptr i32 *%src, i64 131071 95 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 96 ret i32 %res 97 } 98 99 ; Check the next word up, which needs separate address logic. 100 define i32 @f8(i32 %dummy, i32 *%src, i32 %b) { 101 ; CHECK-LABEL: f8: 102 ; CHECK: agfi %r3, 524288 103 ; CHECK: l %r2, 0(%r3) 104 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 105 ; CHECK: br %r14 106 %ptr = getelementptr i32 *%src, i64 131072 107 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 108 ret i32 %res 109 } 110 111 ; Check the high end of the negative aligned CSY range. 112 define i32 @f9(i32 %dummy, i32 *%src, i32 %b) { 113 ; CHECK-LABEL: f9: 114 ; CHECK: ly %r2, -4(%r3) 115 ; CHECK: csy %r2, {{%r[0-9]+}}, -4(%r3) 116 ; CHECK: br %r14 117 %ptr = getelementptr i32 *%src, i64 -1 118 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 119 ret i32 %res 120 } 121 122 ; Check the low end of the CSY range. 123 define i32 @f10(i32 %dummy, i32 *%src, i32 %b) { 124 ; CHECK-LABEL: f10: 125 ; CHECK: ly %r2, -524288(%r3) 126 ; CHECK: csy %r2, {{%r[0-9]+}}, -524288(%r3) 127 ; CHECK: br %r14 128 %ptr = getelementptr i32 *%src, i64 -131072 129 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 130 ret i32 %res 131 } 132 133 ; Check the next word down, which needs separate address logic. 134 define i32 @f11(i32 %dummy, i32 *%src, i32 %b) { 135 ; CHECK-LABEL: f11: 136 ; CHECK: agfi %r3, -524292 137 ; CHECK: l %r2, 0(%r3) 138 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 139 ; CHECK: br %r14 140 %ptr = getelementptr i32 *%src, i64 -131073 141 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 142 ret i32 %res 143 } 144 145 ; Check that indexed addresses are not allowed. 146 define i32 @f12(i32 %dummy, i64 %base, i64 %index, i32 %b) { 147 ; CHECK-LABEL: f12: 148 ; CHECK: agr %r3, %r4 149 ; CHECK: l %r2, 0(%r3) 150 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 151 ; CHECK: br %r14 152 %add = add i64 %base, %index 153 %ptr = inttoptr i64 %add to i32 * 154 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 155 ret i32 %res 156 } 157 158 ; Check that constants are handled. 159 define i32 @f13(i32 %dummy, i32 *%ptr) { 160 ; CHECK-LABEL: f13: 161 ; CHECK: lhi [[LIMIT:%r[0-9]+]], 42 162 ; CHECK: l %r2, 0(%r3) 163 ; CHECK: [[LOOP:\.[^:]*]]: 164 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 165 ; CHECK: crjle %r2, [[LIMIT]], [[KEEP:\..*]] 166 ; CHECK: lhi [[NEW]], 42 167 ; CHECK: cs %r2, [[NEW]], 0(%r3) 168 ; CHECK: jl [[LOOP]] 169 ; CHECK: br %r14 170 %res = atomicrmw min i32 *%ptr, i32 42 seq_cst 171 ret i32 %res 172 } 173
