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; RUN: opt -mtriple=riscv64 -mattr=+m,+v -passes=loop-vectorize \
; RUN: -riscv-v-vector-bits-max=512 -S -scalable-vectorization=on < %s 2>&1 \
; RUN: | FileCheck %s
; void test(int *a, int *b, int N) {
; #pragma clang loop vectorize(enable) vectorize_width(2, scalable)
; for (int i=0; i<N; ++i) {
; a[i + 64] = a[i] + b[i];
; }
; }
;
; CHECK: <vscale x 2 x i32>
define void @test(ptr %a, ptr %b) {
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%arrayidx = getelementptr inbounds i32, ptr %a, i64 %iv
%0 = load i32, ptr %arrayidx, align 4
%arrayidx2 = getelementptr inbounds i32, ptr %b, i64 %iv
%1 = load i32, ptr %arrayidx2, align 4
%add = add nsw i32 %1, %0
%2 = add nuw nsw i64 %iv, 64
%arrayidx5 = getelementptr inbounds i32, ptr %a, i64 %2
store i32 %add, ptr %arrayidx5, align 4
%iv.next = add nuw nsw i64 %iv, 1
%exitcond.not = icmp eq i64 %iv.next, 1024
br i1 %exitcond.not, label %exit, label %loop, !llvm.loop !6
exit:
ret void
}
!6 = !{!6, !7, !8}
!7 = !{!"llvm.loop.vectorize.width", i32 2}
!8 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
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