a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
89 lines
2.3 KiB
LLVM
89 lines
2.3 KiB
LLVM
; Test 32-bit byteswaps from registers to memory.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i16 @llvm.bswap.i16(i16 %a)
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; Check STRVH with no displacement.
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define void @f1(ptr %dst, i16 %a) {
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; CHECK-LABEL: f1:
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; CHECK: strvh %r3, 0(%r2)
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; CHECK: br %r14
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %dst
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ret void
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}
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; Check the high end of the aligned STRVH range.
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define void @f2(ptr %dst, i16 %a) {
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; CHECK-LABEL: f2:
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; CHECK: strvh %r3, 524286(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %dst, i64 262143
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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; Check the next word up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f3(ptr %dst, i16 %a) {
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; CHECK-LABEL: f3:
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; CHECK: agfi %r2, 524288
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; CHECK: strvh %r3, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %dst, i64 262144
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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; Check the high end of the negative aligned STRVH range.
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define void @f4(ptr %dst, i16 %a) {
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; CHECK-LABEL: f4:
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; CHECK: strvh %r3, -2(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %dst, i64 -1
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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; Check the low end of the STRVH range.
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define void @f5(ptr %dst, i16 %a) {
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; CHECK-LABEL: f5:
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; CHECK: strvh %r3, -524288(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %dst, i64 -262144
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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; Check the next word down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f6(ptr %dst, i16 %a) {
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; CHECK-LABEL: f6:
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; CHECK: agfi %r2, -524290
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; CHECK: strvh %r3, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr i16, ptr %dst, i64 -262145
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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; Check that STRVH allows an index.
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define void @f7(i64 %src, i64 %index, i16 %a) {
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; CHECK-LABEL: f7:
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; CHECK: strvh %r4, 524287({{%r3,%r2|%r2,%r3}})
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; CHECK: br %r14
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%add1 = add i64 %src, %index
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%add2 = add i64 %add1, 524287
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%ptr = inttoptr i64 %add2 to ptr
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%swapped = call i16 @llvm.bswap.i16(i16 %a)
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store i16 %swapped, ptr %ptr
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ret void
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}
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