1 ; RUN: llc -march=hexagon < %s | FileCheck %s 2 ; Check for the immediate offset. It must be a multiple of 8. 3 ; CHECK: dcfetch({{.*}}+#8) 4 ; In 6.2 (which supports v4+ only), we generate indexed dcfetch in all cases 5 ; (unlike in 6.1, which supported v2, where dcfetch did not allow an immediate 6 ; offset). 7 ; For expression %2, where the offset is +9, the offset on dcfetch should be 8 ; a multiple of 8, and the offset of 0 is most likely (although not the only 9 ; possible one). Check for #0 anyways, if the test fails with a false 10 ; positive, the second check can be eliminated, or rewritten, and in the 11 ; meantime it can help catch real problems. 12 ; CHECK: dcfetch({{.*}}+#0) 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" 14 target triple = "hexagon" 15 16 define void @foo(i8* %addr) nounwind { 17 entry: 18 %addr.addr = alloca i8*, align 4 19 store i8* %addr, i8** %addr.addr, align 4 20 %0 = load i8*, i8** %addr.addr, align 4 21 %1 = getelementptr i8, i8* %0, i32 8 22 call void @llvm.prefetch(i8* %1, i32 0, i32 3, i32 1) 23 %2 = getelementptr i8, i8* %0, i32 9 24 call void @llvm.prefetch(i8* %2, i32 0, i32 3, i32 1) 25 ret void 26 } 27 28 declare void @llvm.prefetch(i8* nocapture, i32, i32, i32) nounwind 29
