34 lines
1.4 KiB
LLVM
34 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -o -| 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 covers a case where an AArch64 DUP instruction is generated with an
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; invalid encoding, resulting in a crash. We don't care about the specific output
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; here, only that this case no longer causes said crash.
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define dso_local i32 @dupext_crashtest(i32 %e) local_unnamed_addr {
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; CHECK-LABEL: dupext_crashtest:
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for.body.lr.ph:
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%conv314 = zext i32 %e to i64
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br label %vector.memcheck
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vector.memcheck: ; preds = %for.body.lr.ph
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br label %vector.ph
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vector.ph: ; preds = %vector.memcheck
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%broadcast.splatinsert = insertelement <2 x i64> poison, i64 %conv314, i32 0
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%broadcast.splat = shufflevector <2 x i64> %broadcast.splatinsert, <2 x i64> poison, <2 x i32> zeroinitializer
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br label %vector.body
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vector.body: ; preds = %vector.body, %vector.ph
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%wide.load = load <2 x i32>, <2 x i32>* undef, align 4
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%0 = zext <2 x i32> %wide.load to <2 x i64>
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%1 = mul nuw <2 x i64> %broadcast.splat, %0
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%2 = trunc <2 x i64> %1 to <2 x i32>
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%3 = select <2 x i1> undef, <2 x i32> undef, <2 x i32> %2
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%4 = bitcast i32* undef to <2 x i32>*
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store <2 x i32> %3, <2 x i32>* %4, align 4
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br label %vector.body
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}
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