1; Test moves of integers to 2-byte memory locations. 2; 3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 5; Check the low end of the unsigned range. 6define void @f1(i16 *%ptr) { 7; CHECK-LABEL: f1: 8; CHECK: mvhhi 0(%r2), 0 9; CHECK: br %r14 10 store i16 0, i16 *%ptr 11 ret void 12} 13 14; Check the high end of the signed range. 15define void @f2(i16 *%ptr) { 16; CHECK-LABEL: f2: 17; CHECK: mvhhi 0(%r2), 32767 18; CHECK: br %r14 19 store i16 32767, i16 *%ptr 20 ret void 21} 22 23; Check the next value up. 24define void @f3(i16 *%ptr) { 25; CHECK-LABEL: f3: 26; CHECK: mvhhi 0(%r2), -32768 27; CHECK: br %r14 28 store i16 -32768, i16 *%ptr 29 ret void 30} 31 32; Check the high end of the unsigned range. 33define void @f4(i16 *%ptr) { 34; CHECK-LABEL: f4: 35; CHECK: mvhhi 0(%r2), -1 36; CHECK: br %r14 37 store i16 65535, i16 *%ptr 38 ret void 39} 40 41; Check -1. 42define void @f5(i16 *%ptr) { 43; CHECK-LABEL: f5: 44; CHECK: mvhhi 0(%r2), -1 45; CHECK: br %r14 46 store i16 -1, i16 *%ptr 47 ret void 48} 49 50; Check the low end of the signed range. 51define void @f6(i16 *%ptr) { 52; CHECK-LABEL: f6: 53; CHECK: mvhhi 0(%r2), -32768 54; CHECK: br %r14 55 store i16 -32768, i16 *%ptr 56 ret void 57} 58 59; Check the next value down. 60define void @f7(i16 *%ptr) { 61; CHECK-LABEL: f7: 62; CHECK: mvhhi 0(%r2), 32767 63; CHECK: br %r14 64 store i16 -32769, i16 *%ptr 65 ret void 66} 67 68; Check the high end of the MVHHI range. 69define void @f8(i16 *%a) { 70; CHECK-LABEL: f8: 71; CHECK: mvhhi 4094(%r2), 42 72; CHECK: br %r14 73 %ptr = getelementptr i16, i16 *%a, i64 2047 74 store i16 42, i16 *%ptr 75 ret void 76} 77 78; Check the next halfword up, which is out of range. We prefer STHY 79; in that case. 80define void @f9(i16 *%a) { 81; CHECK-LABEL: f9: 82; CHECK: lhi [[TMP:%r[0-5]]], 42 83; CHECK: sthy [[TMP]], 4096(%r2) 84; CHECK: br %r14 85 %ptr = getelementptr i16, i16 *%a, i64 2048 86 store i16 42, i16 *%ptr 87 ret void 88} 89 90; Check negative displacements, for which we again prefer STHY. 91define void @f10(i16 *%a) { 92; CHECK-LABEL: f10: 93; CHECK: lhi [[TMP:%r[0-5]]], 42 94; CHECK: sthy [[TMP]], -2(%r2) 95; CHECK: br %r14 96 %ptr = getelementptr i16, i16 *%a, i64 -1 97 store i16 42, i16 *%ptr 98 ret void 99} 100 101; Check that MVHHI does not allow an index. 102define void @f11(i64 %src, i64 %index) { 103; CHECK-LABEL: f11: 104; CHECK: lhi [[TMP:%r[0-5]]], 42 105; CHECK: sth [[TMP]], 0({{%r2,%r3|%r3,%r2}}) 106; CHECK: br %r14 107 %add = add i64 %src, %index 108 %ptr = inttoptr i64 %add to i16 * 109 store i16 42, i16 *%ptr 110 ret void 111} 112