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1; Test 32-bit byteswaps from registers to memory.2;3; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s4 5declare i16 @llvm.bswap.i16(i16 %a)6 7; Check STRVH with no displacement.8define void @f1(ptr %dst, i16 %a) {9; CHECK-LABEL: f1:10; CHECK: strvh %r3, 0(%r2)11; CHECK: br %r1412 %swapped = call i16 @llvm.bswap.i16(i16 %a)13 store i16 %swapped, ptr %dst14 ret void15}16 17; Check the high end of the aligned STRVH range.18define void @f2(ptr %dst, i16 %a) {19; CHECK-LABEL: f2:20; CHECK: strvh %r3, 524286(%r2)21; CHECK: br %r1422 %ptr = getelementptr i16, ptr %dst, i64 26214323 %swapped = call i16 @llvm.bswap.i16(i16 %a)24 store i16 %swapped, ptr %ptr25 ret void26}27 28; Check the next word up, which needs separate address logic.29; Other sequences besides this one would be OK.30define void @f3(ptr %dst, i16 %a) {31; CHECK-LABEL: f3:32; CHECK: agfi %r2, 52428833; CHECK: strvh %r3, 0(%r2)34; CHECK: br %r1435 %ptr = getelementptr i16, ptr %dst, i64 26214436 %swapped = call i16 @llvm.bswap.i16(i16 %a)37 store i16 %swapped, ptr %ptr38 ret void39}40 41; Check the high end of the negative aligned STRVH range.42define void @f4(ptr %dst, i16 %a) {43; CHECK-LABEL: f4:44; CHECK: strvh %r3, -2(%r2)45; CHECK: br %r1446 %ptr = getelementptr i16, ptr %dst, i64 -147 %swapped = call i16 @llvm.bswap.i16(i16 %a)48 store i16 %swapped, ptr %ptr49 ret void50}51 52; Check the low end of the STRVH range.53define void @f5(ptr %dst, i16 %a) {54; CHECK-LABEL: f5:55; CHECK: strvh %r3, -524288(%r2)56; CHECK: br %r1457 %ptr = getelementptr i16, ptr %dst, i64 -26214458 %swapped = call i16 @llvm.bswap.i16(i16 %a)59 store i16 %swapped, ptr %ptr60 ret void61}62 63; Check the next word down, which needs separate address logic.64; Other sequences besides this one would be OK.65define void @f6(ptr %dst, i16 %a) {66; CHECK-LABEL: f6:67; CHECK: agfi %r2, -52429068; CHECK: strvh %r3, 0(%r2)69; CHECK: br %r1470 %ptr = getelementptr i16, ptr %dst, i64 -26214571 %swapped = call i16 @llvm.bswap.i16(i16 %a)72 store i16 %swapped, ptr %ptr73 ret void74}75 76; Check that STRVH allows an index.77define void @f7(i64 %src, i64 %index, i16 %a) {78; CHECK-LABEL: f7:79; CHECK: strvh %r4, 524287({{%r3,%r2|%r2,%r3}})80; CHECK: br %r1481 %add1 = add i64 %src, %index82 %add2 = add i64 %add1, 52428783 %ptr = inttoptr i64 %add2 to ptr84 %swapped = call i16 @llvm.bswap.i16(i16 %a)85 store i16 %swapped, ptr %ptr86 ret void87}88 89