; RUN: llc < %s -mtriple=arm-apple-ios -mcpu=cortex-a8 -arm-atomic-cfg-tidy=0 | FileCheck %s ; RUN: llc < %s -mtriple=arm-apple-ios -mcpu=cortex-a8 -arm-atomic-cfg-tidy=0 -regalloc=basic | FileCheck %s ; Implementing vld / vst as REG_SEQUENCE eliminates the extra vmov's. %struct.int16x8_t = type { <8 x i16> } %struct.int32x4_t = type { <4 x i32> } %struct.__neon_int8x8x2_t = type { <8 x i8>, <8 x i8> } %struct.__neon_int8x8x3_t = type { <8 x i8>, <8 x i8>, <8 x i8> } %struct.__neon_int16x8x2_t = type { <8 x i16>, <8 x i16> } %struct.__neon_int32x4x2_t = type { <4 x i32>, <4 x i32> } define void @t1(i16* %i_ptr, i16* %o_ptr, %struct.int32x4_t* nocapture %vT0ptr, %struct.int32x4_t* nocapture %vT1ptr) nounwind { entry: ; CHECK-LABEL: t1: ; CHECK: vld1.16 ; CHECK-NOT: vmov d ; CHECK: vmovl.s16 ; CHECK: vshrn.i32 ; CHECK: vshrn.i32 ; CHECK-NOT: vmov d ; CHECK-NEXT: vst1.16 %0 = getelementptr inbounds %struct.int32x4_t, %struct.int32x4_t* %vT0ptr, i32 0, i32 0 ; <<4 x i32>*> [#uses=1] %1 = load <4 x i32>, <4 x i32>* %0, align 16 ; <<4 x i32>> [#uses=1] %2 = getelementptr inbounds %struct.int32x4_t, %struct.int32x4_t* %vT1ptr, i32 0, i32 0 ; <<4 x i32>*> [#uses=1] %3 = load <4 x i32>, <4 x i32>* %2, align 16 ; <<4 x i32>> [#uses=1] %4 = bitcast i16* %i_ptr to i8* ; <i8*> [#uses=1] %5 = tail call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %4, i32 1) ; <<8 x i16>> [#uses=1] %6 = bitcast <8 x i16> %5 to <2 x double> ; <<2 x double>> [#uses=2] %7 = extractelement <2 x double> %6, i32 0 ; <double> [#uses=1] %8 = bitcast double %7 to <4 x i16> ; <<4 x i16>> [#uses=1] %9 = sext <4 x i16> %8 to <4 x i32> ; <<4 x i32>> [#uses=1] %10 = extractelement <2 x double> %6, i32 1 ; <double> [#uses=1] %11 = bitcast double %10 to <4 x i16> ; <<4 x i16>> [#uses=1] %12 = sext <4 x i16> %11 to <4 x i32> ; <<4 x i32>> [#uses=1] %13 = mul <4 x i32> %1, %9 ; <<4 x i32>> [#uses=1] %14 = mul <4 x i32> %3, %12 ; <<4 x i32>> [#uses=1] %15 = lshr <4 x i32> %13, <i32 12, i32 12, i32 12, i32 12> %trunc_15 = trunc <4 x i32> %15 to <4 x i16> %16 = lshr <4 x i32> %14, <i32 12, i32 12, i32 12, i32 12> %trunc_16 = trunc <4 x i32> %16 to <4 x i16> %17 = shufflevector <4 x i16> %trunc_15, <4 x i16> %trunc_16, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> ; <<8 x i16>> [#uses=1] %18 = bitcast i16* %o_ptr to i8* ; <i8*> [#uses=1] tail call void @llvm.arm.neon.vst1.p0i8.v8i16(i8* %18, <8 x i16> %17, i32 1) ret void } define void @t2(i16* %i_ptr, i16* %o_ptr, %struct.int16x8_t* nocapture %vT0ptr, %struct.int16x8_t* nocapture %vT1ptr) nounwind { entry: ; CHECK-LABEL: t2: ; CHECK: vld1.16 ; CHECK-NOT: vmov ; CHECK: vmul.i16 ; CHECK: vld1.16 ; CHECK: vmul.i16 ; CHECK-NOT: vmov ; CHECK: vst1.16 ; CHECK: vst1.16 %0 = getelementptr inbounds %struct.int16x8_t, %struct.int16x8_t* %vT0ptr, i32 0, i32 0 ; <<8 x i16>*> [#uses=1] %1 = load <8 x i16>, <8 x i16>* %0, align 16 ; <<8 x i16>> [#uses=1] %2 = getelementptr inbounds %struct.int16x8_t, %struct.int16x8_t* %vT1ptr, i32 0, i32 0 ; <<8 x i16>*> [#uses=1] %3 = load <8 x i16>, <8 x i16>* %2, align 16 ; <<8 x i16>> [#uses=1] %4 = bitcast i16* %i_ptr to i8* ; <i8*> [#uses=1] %5 = tail call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %4, i32 1) ; <<8 x i16>> [#uses=1] %6 = getelementptr inbounds i16, i16* %i_ptr, i32 8 ; <i16*> [#uses=1] %7 = bitcast i16* %6 to i8* ; <i8*> [#uses=1] %8 = tail call <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8* %7, i32 1) ; <<8 x i16>> [#uses=1] %9 = mul <8 x i16> %1, %5 ; <<8 x i16>> [#uses=1] %10 = mul <8 x i16> %3, %8 ; <<8 x i16>> [#uses=1] %11 = bitcast i16* %o_ptr to i8* ; <i8*> [#uses=1] tail call void @llvm.arm.neon.vst1.p0i8.v8i16(i8* %11, <8 x i16> %9, i32 1) %12 = getelementptr inbounds i16, i16* %o_ptr, i32 8 ; <i16*> [#uses=1] %13 = bitcast i16* %12 to i8* ; <i8*> [#uses=1] tail call void @llvm.arm.neon.vst1.p0i8.v8i16(i8* %13, <8 x i16> %10, i32 1) ret void } define <8 x i8> @t3(i8* %A, i8* %B) nounwind { ; CHECK-LABEL: t3: ; CHECK: vld3.8 ; CHECK: vmul.i8 ; CHECK: vmov r ; CHECK-NOT: vmov d ; CHECK: vst3.8 %tmp1 = call %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8* %A, i32 1) ; <%struct.__neon_int8x8x3_t> [#uses=2] %tmp2 = extractvalue %struct.__neon_int8x8x3_t %tmp1, 0 ; <<8 x i8>> [#uses=1] %tmp3 = extractvalue %struct.__neon_int8x8x3_t %tmp1, 2 ; <<8 x i8>> [#uses=1] %tmp4 = extractvalue %struct.__neon_int8x8x3_t %tmp1, 1 ; <<8 x i8>> [#uses=1] %tmp5 = sub <8 x i8> %tmp3, %tmp4 %tmp6 = add <8 x i8> %tmp2, %tmp3 ; <<8 x i8>> [#uses=1] %tmp7 = mul <8 x i8> %tmp4, %tmp2 tail call void @llvm.arm.neon.vst3.p0i8.v8i8(i8* %B, <8 x i8> %tmp5, <8 x i8> %tmp6, <8 x i8> %tmp7, i32 1) ret <8 x i8> %tmp4 } define void @t4(i32* %in, i32* %out) nounwind { entry: ; CHECK-LABEL: t4: ; CHECK: vld2.32 ; CHECK-NOT: vmov ; CHECK: vld2.32 ; CHECK-NOT: vmov ; CHECK: bne %tmp1 = bitcast i32* %in to i8* ; <i8*> [#uses=1] %tmp2 = tail call %struct.__neon_int32x4x2_t @llvm.arm.neon.vld2.v4i32.p0i8(i8* %tmp1, i32 1) ; <%struct.__neon_int32x4x2_t> [#uses=2] %tmp3 = getelementptr inbounds i32, i32* %in, i32 8 ; <i32*> [#uses=1] %tmp4 = bitcast i32* %tmp3 to i8* ; <i8*> [#uses=1] %tmp5 = tail call %struct.__neon_int32x4x2_t @llvm.arm.neon.vld2.v4i32.p0i8(i8* %tmp4, i32 1) ; <%struct.__neon_int32x4x2_t> [#uses=2] %tmp8 = bitcast i32* %out to i8* ; <i8*> [#uses=1] br i1 undef, label %return1, label %return2 return1: ; CHECK: %return1 ; CHECK-NOT: vmov ; CHECK-NEXT: vadd.i32 ; CHECK-NEXT: vadd.i32 ; CHECK-NEXT: vst2.32 %tmp52 = extractvalue %struct.__neon_int32x4x2_t %tmp2, 0 ; <<4 x i32>> [#uses=1] %tmp57 = extractvalue %struct.__neon_int32x4x2_t %tmp2, 1 ; <<4 x i32>> [#uses=1] %tmp = extractvalue %struct.__neon_int32x4x2_t %tmp5, 0 ; <<4 x i32>> [#uses=1] %tmp39 = extractvalue %struct.__neon_int32x4x2_t %tmp5, 1 ; <<4 x i32>> [#uses=1] %tmp6 = add <4 x i32> %tmp52, %tmp ; <<4 x i32>> [#uses=1] %tmp7 = add <4 x i32> %tmp57, %tmp39 ; <<4 x i32>> [#uses=1] tail call void @llvm.arm.neon.vst2.p0i8.v4i32(i8* %tmp8, <4 x i32> %tmp6, <4 x i32> %tmp7, i32 1) ret void return2: ; CHECK: %return2 ; CHECK: vadd.i32 ; CHECK-NOT: vmov ; CHECK: vst2.32 {d{{[0-9]+}}, d{{[0-9]+}}, d{{[0-9]+}}, d{{[0-9]+}}} %tmp100 = extractvalue %struct.__neon_int32x4x2_t %tmp2, 0 ; <<4 x i32>> [#uses=1] %tmp101 = extractvalue %struct.__neon_int32x4x2_t %tmp5, 1 ; <<4 x i32>> [#uses=1] %tmp102 = add <4 x i32> %tmp100, %tmp101 ; <<4 x i32>> [#uses=1] tail call void @llvm.arm.neon.vst2.p0i8.v4i32(i8* %tmp8, <4 x i32> %tmp102, <4 x i32> %tmp101, i32 1) call void @llvm.trap() unreachable } define <8 x i16> @t5(i16* %A, <8 x i16>* %B) nounwind { ; CHECK-LABEL: t5: ; CHECK: vld1.32 ; How can FileCheck match Q and D registers? We need a lisp interpreter. ; CHECK: vorr {{q[0-9]+}}, {{q[0-9]+}}, {{q[0-9]+}} ; CHECK-NOT: vmov ; CHECK: vld2.16 {d{{[0-9]+}}[1], d{{[0-9]+}}[1]}, [r0] ; CHECK-NOT: vmov ; CHECK: vadd.i16 %tmp0 = bitcast i16* %A to i8* ; <i8*> [#uses=1] %tmp1 = load <8 x i16>, <8 x i16>* %B ; <<8 x i16>> [#uses=2] %tmp2 = call %struct.__neon_int16x8x2_t @llvm.arm.neon.vld2lane.v8i16.p0i8(i8* %tmp0, <8 x i16> %tmp1, <8 x i16> %tmp1, i32 1, i32 1) ; <%struct.__neon_int16x8x2_t> [#uses=2] %tmp3 = extractvalue %struct.__neon_int16x8x2_t %tmp2, 0 ; <<8 x i16>> [#uses=1] %tmp4 = extractvalue %struct.__neon_int16x8x2_t %tmp2, 1 ; <<8 x i16>> [#uses=1] %tmp5 = add <8 x i16> %tmp3, %tmp4 ; <<8 x i16>> [#uses=1] ret <8 x i16> %tmp5 } define <8 x i8> @t6(i8* %A, <8 x i8>* %B) nounwind { ; CHECK-LABEL: t6: ; CHECK: vldr ; CHECK: vorr d[[D0:[0-9]+]], d[[D1:[0-9]+]] ; CHECK-NEXT: vld2.8 {d[[D1]][1], d[[D0]][1]} %tmp1 = load <8 x i8>, <8 x i8>* %B ; <<8 x i8>> [#uses=2] %tmp2 = call %struct.__neon_int8x8x2_t @llvm.arm.neon.vld2lane.v8i8.p0i8(i8* %A, <8 x i8> %tmp1, <8 x i8> %tmp1, i32 1, i32 1) ; <%struct.__neon_int8x8x2_t> [#uses=2] %tmp3 = extractvalue %struct.__neon_int8x8x2_t %tmp2, 0 ; <<8 x i8>> [#uses=1] %tmp4 = extractvalue %struct.__neon_int8x8x2_t %tmp2, 1 ; <<8 x i8>> [#uses=1] %tmp5 = add <8 x i8> %tmp3, %tmp4 ; <<8 x i8>> [#uses=1] ret <8 x i8> %tmp5 } define void @t7(i32* %iptr, i32* %optr) nounwind { entry: ; CHECK-LABEL: t7: ; CHECK: vld2.32 ; CHECK: vst2.32 ; CHECK: vld1.32 {d{{[0-9]+}}, d{{[0-9]+}}}, ; CHECK: vorr q[[Q0:[0-9]+]], q[[Q1:[0-9]+]], q[[Q1:[0-9]+]] ; CHECK-NOT: vmov ; CHECK: vuzp.32 q[[Q1]], q[[Q0]] ; CHECK: vst1.32 %0 = bitcast i32* %iptr to i8* ; <i8*> [#uses=2] %1 = tail call %struct.__neon_int32x4x2_t @llvm.arm.neon.vld2.v4i32.p0i8(i8* %0, i32 1) ; <%struct.__neon_int32x4x2_t> [#uses=2] %tmp57 = extractvalue %struct.__neon_int32x4x2_t %1, 0 ; <<4 x i32>> [#uses=1] %tmp60 = extractvalue %struct.__neon_int32x4x2_t %1, 1 ; <<4 x i32>> [#uses=1] %2 = bitcast i32* %optr to i8* ; <i8*> [#uses=2] tail call void @llvm.arm.neon.vst2.p0i8.v4i32(i8* %2, <4 x i32> %tmp57, <4 x i32> %tmp60, i32 1) %3 = tail call <4 x i32> @llvm.arm.neon.vld1.v4i32.p0i8(i8* %0, i32 1) ; <<4 x i32>> [#uses=1] %4 = shufflevector <4 x i32> %3, <4 x i32> undef, <4 x i32> <i32 0, i32 2, i32 0, i32 2> ; <<4 x i32>> [#uses=1] tail call void @llvm.arm.neon.vst1.p0i8.v4i32(i8* %2, <4 x i32> %4, i32 1) ret void } ; PR7156 define arm_aapcs_vfpcc i32 @t8() nounwind { ; CHECK-LABEL: t8: ; CHECK: vrsqrte.f32 q8, q8 bb.nph55.bb.nph55.split_crit_edge: br label %bb3 bb3: ; preds = %bb3, %bb.nph55.bb.nph55.split_crit_edge br i1 undef, label %bb5, label %bb3 bb5: ; preds = %bb3 br label %bb.i25 bb.i25: ; preds = %bb.i25, %bb5 %0 = shufflevector <2 x float> undef, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> ; <<4 x float>> [#uses=1] %1 = call <4 x float> @llvm.arm.neon.vrsqrte.v4f32(<4 x float> %0) nounwind ; <<4 x float>> [#uses=1] %2 = fmul <4 x float> %1, undef ; <<4 x float>> [#uses=1] %3 = fmul <4 x float> undef, %2 ; <<4 x float>> [#uses=1] %tmp26.i = bitcast <4 x float> %3 to <2 x double> ; <<2 x double>> [#uses=1] %4 = extractelement <2 x double> %tmp26.i, i32 0 ; <double> [#uses=1] %5 = bitcast double %4 to <2 x float> ; <<2 x float>> [#uses=1] %6 = extractelement <2 x float> %5, i32 1 ; <float> [#uses=1] store float %6, float* undef, align 4 br i1 undef, label %bb6, label %bb.i25 bb6: ; preds = %bb.i25 br i1 undef, label %bb7, label %bb14 bb7: ; preds = %bb6 br label %bb.i49 bb.i49: ; preds = %bb.i49, %bb7 br i1 undef, label %bb.i19, label %bb.i49 bb.i19: ; preds = %bb.i19, %bb.i49 br i1 undef, label %exit, label %bb.i19 exit: ; preds = %bb.i19 unreachable bb14: ; preds = %bb6 ret i32 0 } %0 = type { %1, %1, %1, %1 } %1 = type { %2 } %2 = type { <4 x float> } %3 = type { %0, %1 } ; PR7157 define arm_aapcs_vfpcc float @t9(%0* nocapture, %3* nocapture) nounwind { ; CHECK-LABEL: t9: ; CHECK: vmov.i32 d16, #0x0 ; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128] ; CHECK-NEXT: vorr d17, d16, d16 ; CHECK-NEXT: vst1.64 {d16, d17}, [r0:128] %3 = bitcast double 0.000000e+00 to <2 x float> ; <<2 x float>> [#uses=2] %4 = shufflevector <2 x float> %3, <2 x float> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> ; <<4 x float>> [#uses=1] store <4 x float> %4, <4 x float>* undef, align 16 %5 = shufflevector <2 x float> %3, <2 x float> zeroinitializer, <4 x i32> <i32 0, i32 1, i32 2, i32 3> ; <<4 x float>> [#uses=1] store <4 x float> %5, <4 x float>* undef, align 16 br label %8 ; <label>:6 ; preds = %8 br label %7 ; <label>:7 ; preds = %6 br label %8 ; <label>:8 ; preds = %7, %2 br label %6 ; <label>:9 ; preds = %8 ret float undef ; <label>:10 ; preds = %6 ret float 9.990000e+02 } ; PR7162 define arm_aapcs_vfpcc i32 @t10() nounwind { entry: ; CHECK-LABEL: t10: ; CHECK: vmov.i32 q[[Q0:[0-9]+]], #0x3f000000 ; CHECK: vmul.f32 q8, q8, d[[DREG:[0-1]+]] ; CHECK: vadd.f32 q8, q8, q8 %0 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1] %1 = insertelement <4 x float> %0, float undef, i32 1 ; <<4 x float>> [#uses=1] %2 = insertelement <4 x float> %1, float undef, i32 2 ; <<4 x float>> [#uses=1] %3 = insertelement <4 x float> %2, float undef, i32 3 ; <<4 x float>> [#uses=1] %tmp54.i = bitcast <4 x float> %3 to <2 x double> ; <<2 x double>> [#uses=1] %4 = extractelement <2 x double> %tmp54.i, i32 1 ; <double> [#uses=1] %5 = bitcast double %4 to <2 x float> ; <<2 x float>> [#uses=1] %6 = shufflevector <2 x float> %5, <2 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1] %7 = fmul <4 x float> undef, %6 ; <<4 x float>> [#uses=1] %8 = fadd <4 x float> %7, undef ; <<4 x float>> [#uses=1] %9 = fadd <4 x float> %8, undef ; <<4 x float>> [#uses=1] %10 = shufflevector <4 x float> undef, <4 x float> %9, <4 x i32> <i32 0, i32 1, i32 2, i32 7> ; <<4 x float>> [#uses=1] %11 = fmul <4 x float> %10, <float 5.000000e-01, float 5.000000e-01, float 5.000000e-01, float 5.000000e-01> ; <<4 x float>> [#uses=1] %12 = shufflevector <4 x float> %11, <4 x float> undef, <4 x i32> <i32 3, i32 undef, i32 undef, i32 undef> ; <<4 x float>> [#uses=1] %13 = shufflevector <4 x float> %12, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1] %14 = fmul <4 x float> %13, undef ; <<4 x float>> [#uses=1] %15 = fadd <4 x float> undef, %14 ; <<4 x float>> [#uses=1] %16 = shufflevector <4 x float> undef, <4 x float> %15, <4 x i32> <i32 0, i32 1, i32 6, i32 3> ; <<4 x float>> [#uses=1] %17 = fmul <4 x float> %16, undef ; <<4 x float>> [#uses=1] %18 = extractelement <4 x float> %17, i32 2 ; <float> [#uses=1] store float %18, float* undef, align 4 br i1 undef, label %exit, label %bb14 exit: ; preds = %bb.i19 unreachable bb14: ; preds = %bb6 ret i32 0 } ; This test crashes the coalescer because live variables were not updated properly. define <8 x i8> @t11(i8* %A1, i8* %A2, i8* %A3, i8* %A4, i8* %A5, i8* %A6, i8* %A7, i8* %A8, i8* %B) nounwind { %tmp1d = call %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8* %A4, i32 1) ; <%struct.__neon_int8x8x3_t> [#uses=1] %tmp2d = extractvalue %struct.__neon_int8x8x3_t %tmp1d, 0 ; <<8 x i8>> [#uses=1] %tmp1f = call %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8* %A6, i32 1) ; <%struct.__neon_int8x8x3_t> [#uses=1] %tmp2f = extractvalue %struct.__neon_int8x8x3_t %tmp1f, 0 ; <<8 x i8>> [#uses=1] %tmp2bd = add <8 x i8> zeroinitializer, %tmp2d ; <<8 x i8>> [#uses=1] %tmp2abcd = mul <8 x i8> zeroinitializer, %tmp2bd ; <<8 x i8>> [#uses=1] %tmp2ef = sub <8 x i8> zeroinitializer, %tmp2f ; <<8 x i8>> [#uses=1] %tmp2efgh = mul <8 x i8> %tmp2ef, undef ; <<8 x i8>> [#uses=2] call void @llvm.arm.neon.vst3.p0i8.v8i8(i8* %A2, <8 x i8> undef, <8 x i8> undef, <8 x i8> %tmp2efgh, i32 1) %tmp2 = sub <8 x i8> %tmp2efgh, %tmp2abcd ; <<8 x i8>> [#uses=1] %tmp7 = mul <8 x i8> undef, %tmp2 ; <<8 x i8>> [#uses=1] tail call void @llvm.arm.neon.vst3.p0i8.v8i8(i8* %B, <8 x i8> undef, <8 x i8> undef, <8 x i8> %tmp7, i32 1) ret <8 x i8> undef } declare <4 x i32> @llvm.arm.neon.vld1.v4i32.p0i8(i8*, i32) nounwind readonly declare <8 x i16> @llvm.arm.neon.vld1.v8i16.p0i8(i8*, i32) nounwind readonly declare <4 x i16> @llvm.arm.neon.vshiftn.v4i16(<4 x i32>, <4 x i32>) nounwind readnone declare void @llvm.arm.neon.vst1.p0i8.v4i32(i8*, <4 x i32>, i32) nounwind declare void @llvm.arm.neon.vst1.p0i8.v8i16(i8*, <8 x i16>, i32) nounwind declare void @llvm.arm.neon.vst3.p0i8.v8i8(i8*, <8 x i8>, <8 x i8>, <8 x i8>, i32) nounwind declare %struct.__neon_int8x8x3_t @llvm.arm.neon.vld3.v8i8.p0i8(i8*, i32) nounwind readonly declare %struct.__neon_int32x4x2_t @llvm.arm.neon.vld2.v4i32.p0i8(i8*, i32) nounwind readonly declare %struct.__neon_int8x8x2_t @llvm.arm.neon.vld2lane.v8i8.p0i8(i8*, <8 x i8>, <8 x i8>, i32, i32) nounwind readonly declare %struct.__neon_int16x8x2_t @llvm.arm.neon.vld2lane.v8i16.p0i8(i8*, <8 x i16>, <8 x i16>, i32, i32) nounwind readonly declare void @llvm.arm.neon.vst2.p0i8.v4i32(i8*, <4 x i32>, <4 x i32>, i32) nounwind declare <4 x float> @llvm.arm.neon.vrsqrte.v4f32(<4 x float>) nounwind readnone declare void @llvm.trap() nounwind