50 lines
2.0 KiB
LLVM
50 lines
2.0 KiB
LLVM
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; RUN: opt -S -loop-reduce < %s | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-linux-gnu"
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; This test check SCEVExpander FactorOutConstant() is not crashing with blind cast 'Factor' to SCEVConstant.
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; CHECK-LABEL: test
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; FIXME: Handle VectorType in SCEVExpander::expandAddToGEP.
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; The generated IR is not ideal with base 'scalar_vector' cast to i8*, and do ugly getelementptr over casted base.
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; CHECK: uglygep
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define void @test(i32* %a, i32 %v, i64 %n) {
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entry:
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%scalar_vector = alloca <vscale x 4 x i32>, align 16
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%num_elm = call i64 @llvm.aarch64.sve.cntw(i32 31)
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%scalar_count = and i64 %num_elm, -4
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br label %loop_header
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exit:
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ret void
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loop_header:
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%indvar = phi i64 [ 0, %entry ], [ %indvar_next, %for_loop ]
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%gep_a_0 = getelementptr i32, i32* %a, i64 0
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%gep_vec_0 = getelementptr inbounds <vscale x 4 x i32>, <vscale x 4 x i32>* %scalar_vector, i64 0, i64 0
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br label %scalar_loop
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scalar_loop:
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%gep_vec = phi i32* [ %gep_vec_0, %loop_header ], [ %gep_vec_inc, %scalar_loop ]
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%scalar_iv = phi i64 [ 0, %loop_header ], [ %scalar_iv_next, %scalar_loop ]
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store i32 %v, i32* %gep_vec, align 4
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%scalar_iv_next = add i64 %scalar_iv, 1
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%gep_vec_inc = getelementptr i32, i32* %gep_vec, i64 1
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%scalar_exit = icmp eq i64 %scalar_iv_next, %scalar_count
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br i1 %scalar_exit, label %for_loop, label %scalar_loop
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for_loop:
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%vector = load <vscale x 4 x i32>, <vscale x 4 x i32>* %scalar_vector, align 16
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%gep_a = getelementptr i32, i32* %gep_a_0, i64 %indvar
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%vector_ptr = bitcast i32* %gep_a to <vscale x 4 x i32>*
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call void @llvm.masked.store.nxv4i32.p0nxv4i32(<vscale x 4 x i32> %vector, <vscale x 4 x i32>* %vector_ptr, i32 4, <vscale x 4 x i1> undef)
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%indvar_next = add nsw i64 %indvar, %scalar_count
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%exit_cond = icmp eq i64 %indvar_next, %n
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br i1 %exit_cond, label %exit, label %loop_header
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}
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declare i64 @llvm.aarch64.sve.cntw(i32 immarg)
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declare void @llvm.masked.store.nxv4i32.p0nxv4i32(<vscale x 4 x i32>, <vscale x 4 x i32>*, i32 immarg, <vscale x 4 x i1>)
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