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; RUN: opt -S -loop-reduce < %s | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-gnu"
; This test check SCEVExpander FactorOutConstant() is not crashing with blind cast 'Factor' to SCEVConstant.
; CHECK-LABEL: test
; FIXME: Handle VectorType in SCEVExpander::expandAddToGEP.
; The generated IR is not ideal with base 'scalar_vector' cast to i8*, and do ugly getelementptr over casted base.
; CHECK: uglygep
define void @test(ptr %a, i32 %v, i64 %n) {
entry:
%scalar_vector = alloca <vscale x 4 x i32>, align 16
%num_elm = call i64 @llvm.aarch64.sve.cntw(i32 31)
%scalar_count = and i64 %num_elm, -4
br label %loop_header
exit:
ret void
loop_header:
%indvar = phi i64 [ 0, %entry ], [ %indvar_next, %for_loop ]
br label %scalar_loop
scalar_loop:
%gep_vec = phi ptr [ %scalar_vector, %loop_header ], [ %gep_vec_inc, %scalar_loop ]
%scalar_iv = phi i64 [ 0, %loop_header ], [ %scalar_iv_next, %scalar_loop ]
store i32 %v, ptr %gep_vec, align 4
%scalar_iv_next = add i64 %scalar_iv, 1
%gep_vec_inc = getelementptr i32, ptr %gep_vec, i64 1
%scalar_exit = icmp eq i64 %scalar_iv_next, %scalar_count
br i1 %scalar_exit, label %for_loop, label %scalar_loop
for_loop:
%vector = load <vscale x 4 x i32>, ptr %scalar_vector, align 16
%gep_a = getelementptr i32, ptr %a, i64 %indvar
call void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32> %vector, ptr %gep_a, i32 4, <vscale x 4 x i1> undef)
%indvar_next = add nsw i64 %indvar, %scalar_count
%exit_cond = icmp eq i64 %indvar_next, %n
br i1 %exit_cond, label %exit, label %loop_header
}
declare i64 @llvm.aarch64.sve.cntw(i32 immarg)
declare void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32>, ptr, i32 immarg, <vscale x 4 x i1>)
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