1 ; This is the loop in c++ being vectorize in this file with
2 ; experimental.vector.reverse
4 ;#pragma clang loop vectorize_width(4, scalable)
5 ; for (long int i = N - 1; i >= 0; i--)
11 ; The test checks if the mask is being correctly created, reverted and used
13 ; RUN: opt -passes=loop-vectorize,dce -mtriple aarch64-linux-gnu -S \
14 ; RUN: -prefer-predicate-over-epilogue=scalar-epilogue < %s | FileCheck %s
16 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
17 target triple = "aarch64-unknown-linux-gnu"
19 define void @vector_reverse_mask_nxv4i1(ptr %a, ptr %cond, i64 %N) #0 {
20 ; CHECK-LABEL: vector.body:
21 ; CHECK: %[[REVERSE6:.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %{{.*}})
22 ; CHECK: %[[WIDEMSKLOAD:.*]] = call <vscale x 4 x double> @llvm.masked.load.nxv4f64.p0(ptr %{{.*}}, i32 8, <vscale x 4 x i1> %[[REVERSE6]], <vscale x 4 x double> poison)
23 ; CHECK: %[[REVERSE7:.*]] = call <vscale x 4 x double> @llvm.experimental.vector.reverse.nxv4f64(<vscale x 4 x double> %[[WIDEMSKLOAD]])
24 ; CHECK: %[[FADD:.*]] = fadd <vscale x 4 x double> %[[REVERSE7]]
25 ; CHECK: %[[REVERSE9:.*]] = call <vscale x 4 x i1> @llvm.experimental.vector.reverse.nxv4i1(<vscale x 4 x i1> %{{.*}})
26 ; CHECK: %[[REVERSE8:.*]] = call <vscale x 4 x double> @llvm.experimental.vector.reverse.nxv4f64(<vscale x 4 x double> %[[FADD]])
27 ; CHECK: call void @llvm.masked.store.nxv4f64.p0(<vscale x 4 x double> %[[REVERSE8]], ptr %{{.*}}, i32 8, <vscale x 4 x i1> %[[REVERSE9]]
30 %cmp7 = icmp sgt i64 %N, 0
31 br i1 %cmp7, label %for.body, label %for.cond.cleanup
33 for.cond.cleanup: ; preds = %for.cond.cleanup, %entry
36 for.body: ; preds = %for.body, %entry
37 %i.08.in = phi i64 [ %i.08, %for.inc ], [ %N, %entry ]
38 %i.08 = add nsw i64 %i.08.in, -1
39 %arrayidx = getelementptr inbounds double, ptr %cond, i64 %i.08
40 %0 = load double, ptr %arrayidx, align 8
41 %tobool = fcmp une double %0, 0.000000e+00
42 br i1 %tobool, label %if.then, label %for.inc
44 if.then: ; preds = %for.body
45 %arrayidx1 = getelementptr inbounds double, ptr %a, i64 %i.08
46 %1 = load double, ptr %arrayidx1, align 8
47 %add = fadd double %1, 1.000000e+00
48 store double %add, ptr %arrayidx1, align 8
51 for.inc: ; preds = %for.body, %if.then
52 %cmp = icmp sgt i64 %i.08.in, 1
53 br i1 %cmp, label %for.body, label %for.cond.cleanup, !llvm.loop !0
56 attributes #0 = {"target-cpu"="generic" "target-features"="+neon,+sve"}
59 !0 = distinct !{!0, !1, !2, !3, !4}
60 !1 = !{!"llvm.loop.mustprogress"}
61 !2 = !{!"llvm.loop.vectorize.width", i32 4}
62 !3 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
63 !4 = !{!"llvm.loop.vectorize.enable", i1 true}