forked from OSchip/llvm-project
64 lines
2.4 KiB
LLVM
64 lines
2.4 KiB
LLVM
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; RUN: llc < %s -march=arm -mattr=+neon | FileCheck %s
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; PR7158
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define arm_aapcs_vfpcc i32 @test_pr7158() nounwind {
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bb.nph55.bb.nph55.split_crit_edge:
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br label %bb3
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bb3: ; preds = %bb3, %bb.nph55.bb.nph55.split_crit_edge
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br i1 undef, label %bb.i19, label %bb3
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bb.i19: ; preds = %bb.i19, %bb3
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%0 = insertelement <4 x float> undef, float undef, i32 3 ; <<4 x float>> [#uses=3]
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%1 = fmul <4 x float> %0, %0 ; <<4 x float>> [#uses=1]
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%2 = bitcast <4 x float> %1 to <2 x double> ; <<2 x double>> [#uses=0]
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%3 = fmul <4 x float> %0, undef ; <<4 x float>> [#uses=0]
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br label %bb.i19
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}
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; Check that the DAG combiner does not arbitrarily modify BUILD_VECTORs
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; after legalization.
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define void @test_illegal_build_vector() nounwind {
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entry:
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store <2 x i64> undef, <2 x i64>* undef, align 16
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%0 = load <16 x i8>* undef, align 16 ; <<16 x i8>> [#uses=1]
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%1 = or <16 x i8> zeroinitializer, %0 ; <<16 x i8>> [#uses=1]
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store <16 x i8> %1, <16 x i8>* undef, align 16
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ret void
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}
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; Radar 8407927: Make sure that VMOVRRD gets optimized away when the result is
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; converted back to be used as a vector type.
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; CHECK: test_vmovrrd_combine
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define <4 x i32> @test_vmovrrd_combine() nounwind {
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entry:
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br i1 undef, label %bb1, label %bb2
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bb1:
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%0 = bitcast <2 x i64> zeroinitializer to <2 x double>
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%1 = extractelement <2 x double> %0, i32 0
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%2 = bitcast double %1 to i64
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%3 = insertelement <1 x i64> undef, i64 %2, i32 0
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; CHECK-NOT: vmov s
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; CHECK: vext.8
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%4 = shufflevector <1 x i64> %3, <1 x i64> undef, <2 x i32> <i32 0, i32 1>
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%tmp2006.3 = bitcast <2 x i64> %4 to <16 x i8>
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%5 = shufflevector <16 x i8> %tmp2006.3, <16 x i8> undef, <16 x i32> <i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15, i32 16, i32 17, i32 18, i32 19>
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%tmp2004.3 = bitcast <16 x i8> %5 to <4 x i32>
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br i1 undef, label %bb2, label %bb1
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bb2:
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%result = phi <4 x i32> [ undef, %entry ], [ %tmp2004.3, %bb1 ]
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ret <4 x i32> %result
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}
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; Test trying to do a ShiftCombine on illegal types.
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; The vector should be split first.
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define void @lshrIllegalType(<8 x i32>* %A) nounwind {
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%tmp1 = load <8 x i32>* %A
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%tmp2 = lshr <8 x i32> %tmp1, < i32 3, i32 3, i32 3, i32 3, i32 3, i32 3, i32 3, i32 3>
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store <8 x i32> %tmp2, <8 x i32>* %A
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ret void
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}
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