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