forked from OSchip/llvm-project
28 lines
1.1 KiB
LLVM
28 lines
1.1 KiB
LLVM
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; RUN: opt -instcombine -S < %s | FileCheck %s
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; This vscale udiv with a power-of-2 spalt on the rhs should not crash opt
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; CHECK: define <vscale x 2 x i32> @udiv_pow2_vscale(<vscale x 2 x i32> %lhs)
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define <vscale x 2 x i32> @udiv_pow2_vscale(<vscale x 2 x i32> %lhs) {
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%splatter = insertelement <vscale x 2 x i32> undef, i32 2, i32 0
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%rhs = shufflevector <vscale x 2 x i32> %splatter,
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<vscale x 2 x i32> undef,
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<vscale x 2 x i32> zeroinitializer
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%res = udiv <vscale x 2 x i32> %lhs, %rhs
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ret <vscale x 2 x i32> %res
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}
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; This fixed width udiv with a power-of-2 splat on the rhs should also not
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; crash, and instcombine should eliminate the udiv
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; CHECK-LABEL: define <2 x i32> @udiv_pow2_fixed(<2 x i32> %lhs)
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; CHECK-NOT: udiv
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define <2 x i32> @udiv_pow2_fixed(<2 x i32> %lhs) {
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%splatter = insertelement <2 x i32> undef, i32 2, i32 0
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%rhs = shufflevector <2 x i32> %splatter,
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<2 x i32> undef,
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<2 x i32> zeroinitializer
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%res = udiv <2 x i32> %lhs, %rhs
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ret <2 x i32> %res
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}
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