7ddfd9b3eb
Bail from maskIsAllZeroOrUndef and maskIsAllOneOrUndef prior to iterating over the number of elements for scalable vectors. Assert that the mask type is not scalable in possiblyDemandedEltsInMask . Assert that the types are correct in all three functions. Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D87424
22 lines
1.3 KiB
LLVM
22 lines
1.3 KiB
LLVM
; RUN: opt -S -instcombine < %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 checks that instcombine does not crash while invoking
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; maskIsAllOneOrUndef, maskIsAllZeroOrUndef, or possiblyDemandedEltsInMask.
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; CHECK-LABEL: novel_algorithm
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; CHECK: unreachable
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define void @novel_algorithm() {
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entry:
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%a = call <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0nxv16i8(<vscale x 16 x i8>* undef, i32 1, <vscale x 16 x i1> shufflevector (<vscale x 16 x i1> insertelement (<vscale x 16 x i1> undef, i1 true, i32 0), <vscale x 16 x i1> undef, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x i8> undef)
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%b = add <vscale x 16 x i8> undef, %a
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call void @llvm.masked.store.nxv16i8.p0nxv16i8(<vscale x 16 x i8> %b, <vscale x 16 x i8>* undef, i32 1, <vscale x 16 x i1> shufflevector (<vscale x 16 x i1> insertelement (<vscale x 16 x i1> undef, i1 true, i32 0), <vscale x 16 x i1> undef, <vscale x 16 x i32> zeroinitializer))
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unreachable
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}
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declare <vscale x 16 x i8> @llvm.masked.load.nxv16i8.p0nxv16i8(<vscale x 16 x i8>*, i32 immarg, <vscale x 16 x i1>, <vscale x 16 x i8>)
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declare void @llvm.masked.store.nxv16i8.p0nxv16i8(<vscale x 16 x i8>, <vscale x 16 x i8>*, i32 immarg, <vscale x 16 x i1>)
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