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Fix PR2596: out of bound reference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54375 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -560,8 +560,11 @@ static void InvalidateKills(MachineInstr &MI, BitVector &RegKills,
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if (!MO.isRegister() || !MO.isUse() || !MO.isKill())
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continue;
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unsigned Reg = MO.getReg();
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if (TargetRegisterInfo::isVirtualRegister(Reg))
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continue;
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if (KillRegs)
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KillRegs->push_back(Reg);
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assert(Reg < KillOps.size());
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if (KillOps[Reg] == &MO) {
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RegKills.reset(Reg);
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KillOps[Reg] = NULL;
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@ -943,9 +946,11 @@ bool LocalSpiller::PrepForUnfoldOpti(MachineBasicBlock &MBB,
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return false;
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continue;
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}
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PhysReg = VRM.getPhys(VirtReg);
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if (!TRI->regsOverlap(PhysReg, UnfoldPR))
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continue;
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if (VRM.hasPhys(VirtReg)) {
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PhysReg = VRM.getPhys(VirtReg);
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if (!TRI->regsOverlap(PhysReg, UnfoldPR))
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continue;
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}
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// Ok, we'll need to reload the value into a register which makes
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// it impossible to perform the store unfolding optimization later.
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40
test/CodeGen/X86/2008-08-06-RewriterBug.ll
Normal file
40
test/CodeGen/X86/2008-08-06-RewriterBug.ll
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@ -0,0 +1,40 @@
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; RUN: llvm-as < %s | llc -march=x86
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; PR2596
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@data = external global [400 x i64] ; <[400 x i64]*> [#uses=5]
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define void @foo(double* noalias, double* noalias) {
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load i64* getelementptr ([400 x i64]* @data, i32 0, i64 200), align 4 ; <i64>:3 [#uses=1]
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load i64* getelementptr ([400 x i64]* @data, i32 0, i64 199), align 4 ; <i64>:4 [#uses=1]
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load i64* getelementptr ([400 x i64]* @data, i32 0, i64 198), align 4 ; <i64>:5 [#uses=2]
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load i64* getelementptr ([400 x i64]* @data, i32 0, i64 197), align 4 ; <i64>:6 [#uses=1]
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br i1 false, label %28, label %7
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; <label>:7 ; preds = %2
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load double** getelementptr (double** bitcast ([400 x i64]* @data to double**), i64 180), align 8 ; <double*>:8 [#uses=1]
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bitcast double* %8 to double* ; <double*>:9 [#uses=1]
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ptrtoint double* %9 to i64 ; <i64>:10 [#uses=1]
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mul i64 %4, %3 ; <i64>:11 [#uses=1]
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add i64 0, %11 ; <i64>:12 [#uses=1]
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shl i64 %12, 3 ; <i64>:13 [#uses=1]
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sub i64 %10, %13 ; <i64>:14 [#uses=1]
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add i64 %5, 0 ; <i64>:15 [#uses=1]
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shl i64 %15, 3 ; <i64>:16 [#uses=1]
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bitcast i64 %16 to i64 ; <i64>:17 [#uses=1]
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mul i64 %6, %5 ; <i64>:18 [#uses=1]
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add i64 0, %18 ; <i64>:19 [#uses=1]
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shl i64 %19, 3 ; <i64>:20 [#uses=1]
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sub i64 %17, %20 ; <i64>:21 [#uses=1]
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add i64 0, %21 ; <i64>:22 [#uses=1]
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add i64 0, %14 ; <i64>:23 [#uses=1]
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br label %24
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; <label>:24 ; preds = %24, %7
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phi i64 [ 0, %24 ], [ %22, %7 ] ; <i64>:25 [#uses=1]
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phi i64 [ 0, %24 ], [ %23, %7 ] ; <i64>:26 [#uses=0]
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add i64 %25, 24 ; <i64>:27 [#uses=0]
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br label %24
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; <label>:28 ; preds = %2
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unreachable
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}
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