1 ; Test 32-bit atomic minimum and maximum. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5 ; Check signed minium. 6 define i32 @f1(i32 %dummy, i32 *%src, i32 %b) { 7 ; CHECK-LABEL: f1: 8 ; CHECK: l %r2, 0(%r3) 9 ; CHECK: [[LOOP:\.[^:]*]]: 10 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 11 ; CHECK: crjle %r2, %r4, [[KEEP:\..*]] 12 ; CHECK: lr [[NEW]], %r4 13 ; CHECK: cs %r2, [[NEW]], 0(%r3) 14 ; CHECK: jl [[LOOP]] 15 ; CHECK: br %r14 16 %res = atomicrmw min i32 *%src, i32 %b seq_cst 17 ret i32 %res 18 } 19 20 ; Check signed maximum. 21 define i32 @f2(i32 %dummy, i32 *%src, i32 %b) { 22 ; CHECK-LABEL: f2: 23 ; CHECK: l %r2, 0(%r3) 24 ; CHECK: [[LOOP:\.[^:]*]]: 25 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 26 ; CHECK: crjhe %r2, %r4, [[KEEP:\..*]] 27 ; CHECK: lr [[NEW]], %r4 28 ; CHECK: cs %r2, [[NEW]], 0(%r3) 29 ; CHECK: jl [[LOOP]] 30 ; CHECK: br %r14 31 %res = atomicrmw max i32 *%src, i32 %b seq_cst 32 ret i32 %res 33 } 34 35 ; Check unsigned minimum. 36 define i32 @f3(i32 %dummy, i32 *%src, i32 %b) { 37 ; CHECK-LABEL: f3: 38 ; CHECK: l %r2, 0(%r3) 39 ; CHECK: [[LOOP:\.[^:]*]]: 40 ; CHECK: clr %r2, %r4 41 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 42 ; CHECK: jle [[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: clr %r2, %r4 57 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 58 ; CHECK: jhe [[KEEP:\..*]] 59 ; CHECK: lr [[NEW]], %r4 60 ; CHECK: cs %r2, [[NEW]], 0(%r3) 61 ; CHECK: jl [[LOOP]] 62 ; CHECK: br %r14 63 %res = atomicrmw umax i32 *%src, i32 %b seq_cst 64 ret i32 %res 65 } 66 67 ; Check the high end of the aligned CS range. 68 define i32 @f5(i32 %dummy, i32 *%src, i32 %b) { 69 ; CHECK-LABEL: f5: 70 ; CHECK: l %r2, 4092(%r3) 71 ; CHECK: cs %r2, {{%r[0-9]+}}, 4092(%r3) 72 ; CHECK: br %r14 73 %ptr = getelementptr i32 *%src, i64 1023 74 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 75 ret i32 %res 76 } 77 78 ; Check the next word up, which requires CSY. 79 define i32 @f6(i32 %dummy, i32 *%src, i32 %b) { 80 ; CHECK-LABEL: f6: 81 ; CHECK: ly %r2, 4096(%r3) 82 ; CHECK: csy %r2, {{%r[0-9]+}}, 4096(%r3) 83 ; CHECK: br %r14 84 %ptr = getelementptr i32 *%src, i64 1024 85 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 86 ret i32 %res 87 } 88 89 ; Check the high end of the aligned CSY range. 90 define i32 @f7(i32 %dummy, i32 *%src, i32 %b) { 91 ; CHECK-LABEL: f7: 92 ; CHECK: ly %r2, 524284(%r3) 93 ; CHECK: csy %r2, {{%r[0-9]+}}, 524284(%r3) 94 ; CHECK: br %r14 95 %ptr = getelementptr i32 *%src, i64 131071 96 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 97 ret i32 %res 98 } 99 100 ; Check the next word up, which needs separate address logic. 101 define i32 @f8(i32 %dummy, i32 *%src, i32 %b) { 102 ; CHECK-LABEL: f8: 103 ; CHECK: agfi %r3, 524288 104 ; CHECK: l %r2, 0(%r3) 105 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 106 ; CHECK: br %r14 107 %ptr = getelementptr i32 *%src, i64 131072 108 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 109 ret i32 %res 110 } 111 112 ; Check the high end of the negative aligned CSY range. 113 define i32 @f9(i32 %dummy, i32 *%src, i32 %b) { 114 ; CHECK-LABEL: f9: 115 ; CHECK: ly %r2, -4(%r3) 116 ; CHECK: csy %r2, {{%r[0-9]+}}, -4(%r3) 117 ; CHECK: br %r14 118 %ptr = getelementptr i32 *%src, i64 -1 119 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 120 ret i32 %res 121 } 122 123 ; Check the low end of the CSY range. 124 define i32 @f10(i32 %dummy, i32 *%src, i32 %b) { 125 ; CHECK-LABEL: f10: 126 ; CHECK: ly %r2, -524288(%r3) 127 ; CHECK: csy %r2, {{%r[0-9]+}}, -524288(%r3) 128 ; CHECK: br %r14 129 %ptr = getelementptr i32 *%src, i64 -131072 130 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 131 ret i32 %res 132 } 133 134 ; Check the next word down, which needs separate address logic. 135 define i32 @f11(i32 %dummy, i32 *%src, i32 %b) { 136 ; CHECK-LABEL: f11: 137 ; CHECK: agfi %r3, -524292 138 ; CHECK: l %r2, 0(%r3) 139 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 140 ; CHECK: br %r14 141 %ptr = getelementptr i32 *%src, i64 -131073 142 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 143 ret i32 %res 144 } 145 146 ; Check that indexed addresses are not allowed. 147 define i32 @f12(i32 %dummy, i64 %base, i64 %index, i32 %b) { 148 ; CHECK-LABEL: f12: 149 ; CHECK: agr %r3, %r4 150 ; CHECK: l %r2, 0(%r3) 151 ; CHECK: cs %r2, {{%r[0-9]+}}, 0(%r3) 152 ; CHECK: br %r14 153 %add = add i64 %base, %index 154 %ptr = inttoptr i64 %add to i32 * 155 %res = atomicrmw min i32 *%ptr, i32 %b seq_cst 156 ret i32 %res 157 } 158 159 ; Check that constants are handled. 160 define i32 @f13(i32 %dummy, i32 *%ptr) { 161 ; CHECK-LABEL: f13: 162 ; CHECK: lhi [[LIMIT:%r[0-9]+]], 42 163 ; CHECK: l %r2, 0(%r3) 164 ; CHECK: [[LOOP:\.[^:]*]]: 165 ; CHECK: lr [[NEW:%r[0-9]+]], %r2 166 ; CHECK: crjle %r2, [[LIMIT]], [[KEEP:\..*]] 167 ; CHECK: lhi [[NEW]], 42 168 ; CHECK: cs %r2, [[NEW]], 0(%r3) 169 ; CHECK: jl [[LOOP]] 170 ; CHECK: br %r14 171 %res = atomicrmw min i32 *%ptr, i32 42 seq_cst 172 ret i32 %res 173 } 174
