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120
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1 ; RUN: llc -march=hexagon < %s | FileCheck %s
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2 ; Check for the immediate offset. It must be a multiple of 8.
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3 ; CHECK: dcfetch({{.*}}+{{ *}}#8)
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4 ; In 6.2 (which supports v4+ only), we generate indexed dcfetch in all cases
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5 ; (unlike in 6.1, which supported v2, where dcfetch did not allow an immediate
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6 ; offset).
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7 ; For expression %2, where the offset is +9, the offset on dcfetch should be
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8 ; a multiple of 8, and the offset of 0 is most likely (although not the only
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9 ; possible one). Check for #0 anyways, if the test fails with a false
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10 ; positive, the second check can be eliminated, or rewritten, and in the
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11 ; meantime it can help catch real problems.
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12 ; CHECK: dcfetch({{.*}}+{{ *}}#0)
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13 target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32"
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14 target triple = "hexagon"
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15
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16 define void @foo(i8* %addr) nounwind {
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17 entry:
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18 %addr.addr = alloca i8*, align 4
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19 store i8* %addr, i8** %addr.addr, align 4
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20 %0 = load i8*, i8** %addr.addr, align 4
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21 %1 = getelementptr i8, i8* %0, i32 8
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22 call void @llvm.prefetch(i8* %1, i32 0, i32 3, i32 1)
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23 %2 = getelementptr i8, i8* %0, i32 9
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24 call void @llvm.prefetch(i8* %2, i32 0, i32 3, i32 1)
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25 ret void
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26 }
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27
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28 declare void @llvm.prefetch(i8* nocapture, i32, i32, i32) nounwind
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