29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -march=amdgcn -mtriple=amdgcn-- -verify-machineinstrs < %s | FileCheck %s
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; Test for ICE in SelectionDAG::computeKnownBits when visiting EXTRACT_SUBVECTOR
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; with DemandedElts already as wide as the source vector.
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define <3 x i32> @quux() {
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; CHECK-LABEL: quux:
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; CHECK: ; %bb.0: ; %bb
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; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
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; CHECK-NEXT: v_mov_b32_e32 v0, 0
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; CHECK-NEXT: v_mov_b32_e32 v1, 1
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; CHECK-NEXT: v_mov_b32_e32 v2, 1
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; CHECK-NEXT: s_setpc_b64 s[30:31]
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bb:
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%tmp = shufflevector <4 x i8> <i8 1, i8 2, i8 3, i8 4>, <4 x i8> undef, <3 x i32> <i32 0, i32 1, i32 2>
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%tmp1 = extractelement <3 x i8> %tmp, i64 0
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%tmp2 = zext i8 %tmp1 to i32
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%tmp3 = insertelement <3 x i32> undef, i32 %tmp2, i32 0
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%tmp4 = extractelement <3 x i8> %tmp, i64 1
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%tmp5 = zext i8 %tmp4 to i32
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%tmp6 = insertelement <3 x i32> %tmp3, i32 %tmp5, i32 1
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%tmp7 = extractelement <3 x i8> %tmp, i64 2
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%tmp8 = zext i8 %tmp7 to i32
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%tmp9 = insertelement <3 x i32> %tmp6, i32 %tmp8, i32 2
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%tmp10 = lshr <3 x i32> %tmp9, <i32 1, i32 1, i32 1>
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ret <3 x i32> %tmp10
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}
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