llvm-project/llvm/test/CodeGen/Hexagon/builtin-prefetch-offset.ll
Fangrui Song 2208c97c1b [Hexagon,test] Change llc -march= to -mtriple=
Similar to 806761a7629df268c8aed49657aeccffa6bca449

-mtriple= specifies the full target triple while -march= merely sets the
architecture part of the default target triple, leaving a target triple which
may not make sense.

Therefore, -march= is error-prone and not recommended for tests without a target
triple. The issue has been benign as we recognize $unknown-apple-darwin as ELF instead
of rejecting it outrightly.
2024-12-15 10:20:22 -08:00

29 lines
1.2 KiB
LLVM

; RUN: llc -mtriple=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(ptr %addr) nounwind {
entry:
%addr.addr = alloca ptr, align 4
store ptr %addr, ptr %addr.addr, align 4
%0 = load ptr, ptr %addr.addr, align 4
%1 = getelementptr i8, ptr %0, i32 8
call void @llvm.prefetch(ptr %1, i32 0, i32 3, i32 1)
%2 = getelementptr i8, ptr %0, i32 9
call void @llvm.prefetch(ptr %2, i32 0, i32 3, i32 1)
ret void
}
declare void @llvm.prefetch(ptr nocapture, i32, i32, i32) nounwind