1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -march=amdgcn -mtriple=amdgcn-- -verify-machineinstrs < %s | FileCheck %s
4 ; Test for ICE in SelectionDAG::computeKnownBits when visiting EXTRACT_SUBVECTOR
5 ; with DemandedElts already as wide as the source vector.
7 define <3 x i32> @quux() #0 {
9 ; CHECK: ; %bb.0: ; %bb
10 ; CHECK-NEXT: s_waitcnt vmcnt(0) expcnt(0) lgkmcnt(0)
11 ; CHECK-NEXT: v_mov_b32_e32 v0, 0
12 ; CHECK-NEXT: v_mov_b32_e32 v1, 1
13 ; CHECK-NEXT: v_mov_b32_e32 v2, 1
14 ; CHECK-NEXT: s_setpc_b64 s[30:31]
16 %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>
17 %tmp1 = extractelement <3 x i8> %tmp, i64 0
18 %tmp2 = zext i8 %tmp1 to i32
19 %tmp3 = insertelement <3 x i32> undef, i32 %tmp2, i32 0
20 %tmp4 = extractelement <3 x i8> %tmp, i64 1
21 %tmp5 = zext i8 %tmp4 to i32
22 %tmp6 = insertelement <3 x i32> %tmp3, i32 %tmp5, i32 1
23 %tmp7 = extractelement <3 x i8> %tmp, i64 2
24 %tmp8 = zext i8 %tmp7 to i32
25 %tmp9 = insertelement <3 x i32> %tmp6, i32 %tmp8, i32 2
26 %tmp10 = lshr <3 x i32> %tmp9, <i32 1, i32 1, i32 1>
30 attributes #0 = { noinline optnone }