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1; RUN: llc < %s -mtriple=x86_64-unknown -mattr=sse4.1 -o /dev/null2 3; Testcase for PR31593.4; Revision r291120 introduced a regression and this test started failing5; because of a 'fatal error in the backend':6; Cannot select: t14: v2i64 = zero_extend_vector_inreg t187; t18: v4i32 = bitcast t178; t17: v2i64,ch = load<LD16[%0](dereferenceable)> t0, FrameIndex:i64<1>, undef:i649; t1: i64 = FrameIndex<1>10; t3: i64 = undef11; In function: _Z3foov12; This regression was fixed in r291535.13 14%struct.S = type { <2 x i64> }15 16declare <4 x i32> @llvm.x86.sse2.pslli.d(<4 x i32>, i32) 17define void @_Z3foov() local_unnamed_addr #2 {18entry:19 %zero = alloca %struct.S, align 1620 %e = alloca %struct.S, align 1621 %s = alloca %struct.S, align 1622 %0 = load <4 x i32>, ptr %e, align 1623 %vecext.i = extractelement <4 x i32> %0, i32 024 %1 = call <4 x i32> @llvm.x86.sse2.pslli.d(<4 x i32> undef, i32 %vecext.i)25 store <4 x i32> %1, ptr %s, align 1626 ret void27}28attributes #2 = { "target-features"="+sse4.1" }29