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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 52; RUN: llc --force-dwarf-frame-section %s -o - | FileCheck %s3target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"4target triple = "thumbv8.1m.main-arm-none-eabi"5 6; int g(int, int *);7;8; int f(int n) {9; int a[n];10; g(n, a);11; int s = 0;12; for (int i = 0; i < n; ++i)13; s += a[i];14; return s;15; }16 17define hidden i32 @f(i32 %n) local_unnamed_addr #0 {18; CHECK-LABEL: f:19; CHECK: .cfi_sections .debug_frame20; CHECK-NEXT: .cfi_startproc21; CHECK-NEXT: @ %bb.0: @ %entry22; CHECK-NEXT: pac r12, lr, sp23; CHECK-NEXT: .save {r4, r5, r6, r7, r8, r9, ra_auth_code, lr}24; CHECK-NEXT: push.w {r4, r5, r6, r7, r8, r9, r12, lr}25; CHECK-NEXT: .cfi_def_cfa_offset 3226; CHECK-NEXT: .cfi_offset lr, -427; CHECK-NEXT: .cfi_offset ra_auth_code, -828; CHECK-NEXT: .cfi_offset r9, -1229; CHECK-NEXT: .cfi_offset r8, -1630; CHECK-NEXT: .cfi_offset r7, -2031; CHECK-NEXT: .cfi_offset r6, -2432; CHECK-NEXT: .cfi_offset r5, -2833; CHECK-NEXT: .cfi_offset r4, -3234; CHECK-NEXT: .setfp r7, sp, #1235; CHECK-NEXT: add r7, sp, #1236; CHECK-NEXT: .cfi_def_cfa r7, 2037; CHECK-NEXT: mov r5, r038; CHECK-NEXT: movs r0, #739; CHECK-NEXT: add.w r0, r0, r5, lsl #240; CHECK-NEXT: bic r0, r0, #741; CHECK-NEXT: sub.w r4, sp, r042; CHECK-NEXT: mov sp, r443; CHECK-NEXT: mov r0, r544; CHECK-NEXT: mov r1, r445; CHECK-NEXT: bl g46; CHECK-NEXT: cmp r5, #147; CHECK-NEXT: blt .LBB0_348; CHECK-NEXT: @ %bb.1: @ %for.body.preheader49; CHECK-NEXT: and r12, r5, #350; CHECK-NEXT: subs r0, r5, #151; CHECK-NEXT: cmp r0, #352; CHECK-NEXT: bhs .LBB0_453; CHECK-NEXT: @ %bb.2:54; CHECK-NEXT: movs r2, #055; CHECK-NEXT: movs r0, #056; CHECK-NEXT: b .LBB0_657; CHECK-NEXT: .LBB0_3:58; CHECK-NEXT: movs r0, #059; CHECK-NEXT: b .LBB0_960; CHECK-NEXT: .LBB0_4: @ %for.body.preheader.new61; CHECK-NEXT: bic r0, r5, #362; CHECK-NEXT: movs r2, #163; CHECK-NEXT: subs r0, #464; CHECK-NEXT: sub.w r3, r4, #1665; CHECK-NEXT: add.w lr, r2, r0, lsr #266; CHECK-NEXT: movs r0, #067; CHECK-NEXT: movs r2, #068; CHECK-NEXT: .LBB0_5: @ %for.body69; CHECK-NEXT: @ =>This Inner Loop Header: Depth=170; CHECK-NEXT: ldr r5, [r3, #16]!71; CHECK-NEXT: adds r2, #472; CHECK-NEXT: add r0, r573; CHECK-NEXT: ldrd r5, r1, [r3, #4]74; CHECK-NEXT: ldr r6, [r3, #12]75; CHECK-NEXT: add r0, r576; CHECK-NEXT: add r0, r177; CHECK-NEXT: add r0, r678; CHECK-NEXT: le lr, .LBB0_579; CHECK-NEXT: .LBB0_6: @ %for.cond.cleanup.loopexit.unr-lcssa80; CHECK-NEXT: cmp.w r12, #081; CHECK-NEXT: beq .LBB0_982; CHECK-NEXT: @ %bb.7: @ %for.body.epil83; CHECK-NEXT: ldr.w r3, [r4, r2, lsl #2]84; CHECK-NEXT: cmp.w r12, #185; CHECK-NEXT: add r0, r386; CHECK-NEXT: beq .LBB0_987; CHECK-NEXT: @ %bb.8: @ %for.body.epil.188; CHECK-NEXT: add.w r2, r4, r2, lsl #289; CHECK-NEXT: cmp.w r12, #290; CHECK-NEXT: ldr r1, [r2, #4]91; CHECK-NEXT: add r0, r192; CHECK-NEXT: itt ne93; CHECK-NEXT: ldrne r1, [r2, #8]94; CHECK-NEXT: addne r0, r195; CHECK-NEXT: .LBB0_9: @ %for.cond.cleanup96; CHECK-NEXT: sub.w r4, r7, #1297; CHECK-NEXT: mov sp, r498; CHECK-NEXT: pop.w {r4, r5, r6, r7, r8, r9, r12, lr}99; CHECK-NEXT: aut r12, lr, sp100; CHECK-NEXT: bx lr101entry:102 %vla = alloca i32, i32 %n, align 4103 %call = call i32 @g(i32 %n, ptr nonnull %vla) #0104 %cmp8 = icmp sgt i32 %n, 0105 br i1 %cmp8, label %for.body.preheader, label %for.cond.cleanup106 107for.body.preheader: ; preds = %entry108 %0 = add i32 %n, -1109 %xtraiter = and i32 %n, 3110 %1 = icmp ult i32 %0, 3111 br i1 %1, label %for.cond.cleanup.loopexit.unr-lcssa, label %for.body.preheader.new112 113for.body.preheader.new: ; preds = %for.body.preheader114 %unroll_iter = and i32 %n, -4115 br label %for.body116 117for.cond.cleanup.loopexit.unr-lcssa: ; preds = %for.body, %for.body.preheader118 %add.lcssa.ph = phi i32 [ undef, %for.body.preheader ], [ %add.3, %for.body ]119 %i.010.unr = phi i32 [ 0, %for.body.preheader ], [ %inc.3, %for.body ]120 %s.09.unr = phi i32 [ 0, %for.body.preheader ], [ %add.3, %for.body ]121 %lcmp.mod.not = icmp eq i32 %xtraiter, 0122 br i1 %lcmp.mod.not, label %for.cond.cleanup, label %for.body.epil123 124for.body.epil: ; preds = %for.cond.cleanup.loopexit.unr-lcssa125 %arrayidx.epil = getelementptr inbounds i32, ptr %vla, i32 %i.010.unr126 %2 = load i32, ptr %arrayidx.epil, align 4127 %add.epil = add nsw i32 %2, %s.09.unr128 %epil.iter.cmp.not = icmp eq i32 %xtraiter, 1129 br i1 %epil.iter.cmp.not, label %for.cond.cleanup, label %for.body.epil.1130 131for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit.unr-lcssa, %for.body.epil.2, %for.body.epil.1, %for.body.epil, %entry132 %s.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa.ph, %for.cond.cleanup.loopexit.unr-lcssa ], [ %add.epil, %for.body.epil ], [ %add.epil.1, %for.body.epil.1 ], [ %add.epil.2, %for.body.epil.2 ]133 ret i32 %s.0.lcssa134 135for.body: ; preds = %for.body, %for.body.preheader.new136 %i.010 = phi i32 [ 0, %for.body.preheader.new ], [ %inc.3, %for.body ]137 %s.09 = phi i32 [ 0, %for.body.preheader.new ], [ %add.3, %for.body ]138 %niter = phi i32 [ %unroll_iter, %for.body.preheader.new ], [ %niter.nsub.3, %for.body ]139 %arrayidx = getelementptr inbounds i32, ptr %vla, i32 %i.010140 %3 = load i32, ptr %arrayidx, align 4141 %add = add nsw i32 %3, %s.09142 %inc = or disjoint i32 %i.010, 1143 %arrayidx.1 = getelementptr inbounds i32, ptr %vla, i32 %inc144 %4 = load i32, ptr %arrayidx.1, align 4145 %add.1 = add nsw i32 %4, %add146 %inc.1 = or disjoint i32 %i.010, 2147 %arrayidx.2 = getelementptr inbounds i32, ptr %vla, i32 %inc.1148 %5 = load i32, ptr %arrayidx.2, align 4149 %add.2 = add nsw i32 %5, %add.1150 %inc.2 = or disjoint i32 %i.010, 3151 %arrayidx.3 = getelementptr inbounds i32, ptr %vla, i32 %inc.2152 %6 = load i32, ptr %arrayidx.3, align 4153 %add.3 = add nsw i32 %6, %add.2154 %inc.3 = add nuw nsw i32 %i.010, 4155 %niter.nsub.3 = add i32 %niter, -4156 %niter.ncmp.3 = icmp eq i32 %niter.nsub.3, 0157 br i1 %niter.ncmp.3, label %for.cond.cleanup.loopexit.unr-lcssa, label %for.body158 159for.body.epil.1: ; preds = %for.body.epil160 %inc.epil = add nuw nsw i32 %i.010.unr, 1161 %arrayidx.epil.1 = getelementptr inbounds i32, ptr %vla, i32 %inc.epil162 %7 = load i32, ptr %arrayidx.epil.1, align 4163 %add.epil.1 = add nsw i32 %7, %add.epil164 %epil.iter.cmp.1.not = icmp eq i32 %xtraiter, 2165 br i1 %epil.iter.cmp.1.not, label %for.cond.cleanup, label %for.body.epil.2166 167for.body.epil.2: ; preds = %for.body.epil.1168 %inc.epil.1 = add nuw nsw i32 %i.010.unr, 2169 %arrayidx.epil.2 = getelementptr inbounds i32, ptr %vla, i32 %inc.epil.1170 %8 = load i32, ptr %arrayidx.epil.2, align 4171 %add.epil.2 = add nsw i32 %8, %add.epil.1172 br label %for.cond.cleanup173}174 175declare dso_local i32 @g(i32, ptr) local_unnamed_addr #0176 177attributes #0 = { nounwind "sign-return-address"="non-leaf"}178 179!llvm.module.flags = !{!0, !1, !2}180 181!0 = !{i32 8, !"branch-target-enforcement", i32 0}182!1 = !{i32 8, !"sign-return-address", i32 1}183!2 = !{i32 8, !"sign-return-address-all", i32 0}184