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1# REQUIRES: asserts2# RUN: llc --mtriple=hexagon %s -run-pass=pipeliner -debug-only=pipeliner \3# RUN: -window-sched=force -filetype=null -verify-machineinstrs 2>&1 \4# RUN: | FileCheck %s5 6# CHECK: Best window offset is {{[0-9]+}} and Best II is {{[0-9]+}}.7# CHECK-LABEL: name: exp_approx_top_six8# CHECK: bb.5.loop_body:9# CHECK: dead %{{[0-9]*}}:hvxvr = V6_vaddw %{{[0-9]*}}, %{{[0-9]*}}10# CHECK: ENDLOOP011# CHECK: bb.6:12 13--- |14 define void @exp_approx_top_six(i32 %N, ptr noalias %x, ptr noalias %y) #0 {15 entry:16 %is_zero = icmp eq i32 %N, 017 br i1 %is_zero, label %exit, label %loop_header18 19 loop_header:20 %vec_one = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 1065353216)21 %vec_half = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 1056964608)22 %vec_sixth = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 1042983595)23 %vec_24th = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 1026206379)24 %vec_120th = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 1007192201)25 %vec_720th = tail call <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32 985008993)26 br label %loop_body27 28 exit:29 ret void30 31 loop_body:32 %lsr.iv1 = phi ptr [ %cgep3, %loop_body ], [ %x, %loop_header ]33 %lsr.iv = phi ptr [ %cgep, %loop_body ], [ %y, %loop_header ]34 %index = phi i32 [ 0, %loop_header ], [ %index_next, %loop_body ]35 %vec_input = load <32 x i32>, ptr %lsr.iv1, align 12836 %vec_input_pow_2 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_input, <32 x i32> %vec_input)37 %vec_input_pow_3 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_input_pow_2, <32 x i32> %vec_input)38 %vec_input_pow_4 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_input_pow_3, <32 x i32> %vec_input)39 %vec_input_pow_5 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_input_pow_4, <32 x i32> %vec_input)40 %vec_input_pow_6 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_input_pow_5, <32 x i32> %vec_input)41 %vec_exp_approx_1 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_half, <32 x i32> %vec_input_pow_2)42 %vec_exp_approx_2 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_sixth, <32 x i32> %vec_input_pow_3)43 %vec_exp_approx_3 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_24th, <32 x i32> %vec_input_pow_4)44 %vec_exp_approx_4 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_120th, <32 x i32> %vec_input_pow_5)45 %vec_exp_approx_5 = tail call <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32> %vec_720th, <32 x i32> %vec_input_pow_6)46 %vec_exp_sum_1 = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_one, <32 x i32> %vec_input)47 %vec_exp_sum_2 = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_exp_sum_1, <32 x i32> %vec_exp_approx_1)48 %vec_exp_sum_3 = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_exp_sum_2, <32 x i32> %vec_exp_approx_2)49 %vec_exp_sum_4 = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_exp_sum_3, <32 x i32> %vec_exp_approx_3)50 %vec_exp_sum_5 = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_exp_sum_4, <32 x i32> %vec_exp_approx_4)51 %vec_exp_result = tail call <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32> %vec_exp_sum_5, <32 x i32> %vec_exp_approx_5)52 store <32 x i32> %vec_exp_result, ptr %lsr.iv, align 12853 %index_next = add nuw i32 %index, 3254 %loop_cond = icmp ult i32 %index_next, %N55 %cgep = getelementptr i8, ptr %lsr.iv, i32 12856 %cgep3 = getelementptr i8, ptr %lsr.iv1, i32 12857 br i1 %loop_cond, label %loop_body, label %exit58 }59 60 declare <32 x i32> @llvm.hexagon.V6.vmpyowh.rnd.128B(<32 x i32>, <32 x i32>)61 declare <32 x i32> @llvm.hexagon.V6.lvsplatw.128B(i32)62 declare <32 x i32> @llvm.hexagon.V6.vaddw.128B(<32 x i32>, <32 x i32>)63 64 attributes #0 = { "target-features"="+hvx-length128b,+hvxv69,+v66,-long-calls" }65...66---67name: exp_approx_top_six68tracksRegLiveness: true69body: |70 bb.0.entry:71 successors: %bb.2(0x30000000), %bb.1(0x50000000)72 liveins: $r0, $r1, $r273 74 %0:intregs = COPY $r275 %1:intregs = COPY $r176 %2:intregs = COPY $r077 %3:predregs = C2_cmpeqi %2, 078 J2_jumpt killed %3, %bb.2, implicit-def dead $pc79 J2_jump %bb.1, implicit-def dead $pc80 81 bb.1.loop_header:82 successors: %bb.3(0x80000000)83 84 %4:intregs = A2_tfrsi 106535321685 %5:hvxvr = V6_lvsplatw killed %486 %6:intregs = A2_tfrsi 105696460887 %7:hvxvr = V6_lvsplatw killed %688 %8:intregs = A2_tfrsi 104298359589 %9:hvxvr = V6_lvsplatw killed %890 %10:intregs = A2_tfrsi 102620637991 %11:hvxvr = V6_lvsplatw killed %1092 %12:intregs = A2_tfrsi 100719220193 %13:hvxvr = V6_lvsplatw killed %1294 %14:intregs = A2_tfrsi 98500899395 %15:hvxvr = V6_lvsplatw killed %1496 %16:intregs = A2_addi %2, 3197 %17:intregs = S2_lsr_i_r %16, 598 %18:intregs = COPY %1799 J2_loop0r %bb.3, %18, implicit-def $lc0, implicit-def $sa0, implicit-def $usr100 J2_jump %bb.3, implicit-def dead $pc101 102 bb.2.exit:103 PS_jmpret $r31, implicit-def dead $pc104 105 bb.3.loop_body (machine-block-address-taken):106 successors: %bb.3(0x7c000000), %bb.2(0x04000000)107 108 %19:intregs = PHI %1, %bb.1, %20, %bb.3109 %21:intregs = PHI %0, %bb.1, %22, %bb.3110 %23:hvxvr, %20:intregs = V6_vL32b_pi %19, 128 :: (load (s1024) from %ir.lsr.iv1)111 %24:hvxvr = V6_vmpyowh_rnd %23, %23112 %25:hvxvr = V6_vmpyowh_rnd %24, %23113 %26:hvxvr = V6_vmpyowh_rnd %25, %23114 %27:hvxvr = V6_vmpyowh_rnd %26, %23115 %28:hvxvr = V6_vmpyowh_rnd %27, %23116 %29:hvxvr = V6_vmpyowh_rnd %7, %24117 %30:hvxvr = V6_vmpyowh_rnd %9, %25118 %31:hvxvr = V6_vmpyowh_rnd %11, %26119 %32:hvxvr = V6_vmpyowh_rnd %13, %27120 %33:hvxvr = V6_vmpyowh_rnd %15, killed %28121 %34:hvxvr = V6_vaddw %5, %23122 %35:hvxvr = V6_vaddw killed %34, killed %29123 %36:hvxvr = V6_vaddw killed %35, killed %30124 %37:hvxvr = V6_vaddw killed %36, killed %31125 %38:hvxvr = V6_vaddw killed %37, killed %32126 %39:hvxvr = V6_vaddw %38, %33127 ; To check the dead virtual register within loop kernel.128 dead %40:hvxvr = V6_vaddw killed %38, killed %33129 %22:intregs = V6_vS32b_pi %21, 128, killed %39 :: (store (s1024) into %ir.lsr.iv)130 ENDLOOP0 %bb.3, implicit-def $pc, implicit-def $lc0, implicit $sa0, implicit $lc0131 J2_jump %bb.2, implicit-def dead $pc132...133