clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name PPCMachineFunctionInfo.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/build-llvm/lib/Target/PowerPC -resource-dir /usr/lib/llvm-14/lib/clang/14.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/build-llvm/lib/Target/PowerPC -I /build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/lib/Target/PowerPC -I /build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/build-llvm/include -I /build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/include -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-14/lib/clang/14.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/build-llvm/lib/Target/PowerPC -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0=. -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2021-08-28-193554-24367-1 -x c++ /build/llvm-toolchain-snapshot-14~++20210828111110+16086d47c0d0/llvm/lib/Target/PowerPC/PPCMachineFunctionInfo.cpp
1 | |
2 | |
3 | |
4 | |
5 | |
6 | |
7 | |
8 | |
9 | #include "PPCMachineFunctionInfo.h" |
10 | #include "llvm/ADT/Twine.h" |
11 | #include "llvm/BinaryFormat/XCOFF.h" |
12 | #include "llvm/IR/DataLayout.h" |
13 | #include "llvm/MC/MCContext.h" |
14 | #include "llvm/Support/CommandLine.h" |
15 | |
16 | using namespace llvm; |
17 | static cl::opt<bool> PPCDisableNonVolatileCR( |
18 | "ppc-disable-non-volatile-cr", |
19 | cl::desc("Disable the use of non-volatile CR register fields"), |
20 | cl::init(false), cl::Hidden); |
21 | |
22 | void PPCFunctionInfo::anchor() {} |
23 | PPCFunctionInfo::PPCFunctionInfo(const MachineFunction &MF) |
24 | : DisableNonVolatileCR(PPCDisableNonVolatileCR) {} |
25 | |
26 | MCSymbol *PPCFunctionInfo::getPICOffsetSymbol(MachineFunction &MF) const { |
27 | const DataLayout &DL = MF.getDataLayout(); |
28 | return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) + |
29 | Twine(MF.getFunctionNumber()) + |
30 | "$poff"); |
31 | } |
32 | |
33 | MCSymbol *PPCFunctionInfo::getGlobalEPSymbol(MachineFunction &MF) const { |
34 | const DataLayout &DL = MF.getDataLayout(); |
35 | return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) + |
36 | "func_gep" + |
37 | Twine(MF.getFunctionNumber())); |
38 | } |
39 | |
40 | MCSymbol *PPCFunctionInfo::getLocalEPSymbol(MachineFunction &MF) const { |
41 | const DataLayout &DL = MF.getDataLayout(); |
42 | return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) + |
43 | "func_lep" + |
44 | Twine(MF.getFunctionNumber())); |
45 | } |
46 | |
47 | MCSymbol *PPCFunctionInfo::getTOCOffsetSymbol(MachineFunction &MF) const { |
48 | const DataLayout &DL = MF.getDataLayout(); |
49 | return MF.getContext().getOrCreateSymbol(Twine(DL.getPrivateGlobalPrefix()) + |
50 | "func_toc" + |
51 | Twine(MF.getFunctionNumber())); |
52 | } |
53 | |
54 | bool PPCFunctionInfo::isLiveInSExt(Register VReg) const { |
55 | for (const std::pair<Register, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs) |
56 | if (LiveIn.first == VReg) |
57 | return LiveIn.second.isSExt(); |
58 | return false; |
59 | } |
60 | |
61 | bool PPCFunctionInfo::isLiveInZExt(Register VReg) const { |
62 | for (const std::pair<Register, ISD::ArgFlagsTy> &LiveIn : LiveInAttrs) |
63 | if (LiveIn.first == VReg) |
64 | return LiveIn.second.isZExt(); |
65 | return false; |
66 | } |
67 | |
68 | void PPCFunctionInfo::appendParameterType(ParamType Type) { |
69 | |
70 | ParamtersType.push_back(Type); |
71 | switch (Type) { |
72 | case FixedType: |
73 | ++FixedParmsNum; |
74 | return; |
75 | case ShortFloatingPoint: |
76 | case LongFloatingPoint: |
77 | ++FloatingParmsNum; |
78 | return; |
79 | case VectorChar: |
80 | case VectorShort: |
81 | case VectorInt: |
82 | case VectorFloat: |
83 | ++VectorParmsNum; |
84 | return; |
85 | } |
86 | llvm_unreachable("Error ParamType type."); |
87 | } |
88 | |
89 | uint32_t PPCFunctionInfo::getVecExtParmsType() const { |
90 | |
91 | uint32_t VectExtParamInfo = 0; |
92 | unsigned ShiftBits = 32 - XCOFF::TracebackTable::WidthOfParamType; |
93 | int Bits = 0; |
94 | |
95 | if (!hasVectorParms()) |
96 | return 0; |
97 | |
98 | for (const auto &Elt : ParamtersType) { |
99 | switch (Elt) { |
100 | case VectorChar: |
101 | VectExtParamInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
102 | VectExtParamInfo |= |
103 | XCOFF::TracebackTable::ParmTypeIsVectorCharBit >> ShiftBits; |
104 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
105 | break; |
106 | case VectorShort: |
107 | VectExtParamInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
108 | VectExtParamInfo |= |
109 | XCOFF::TracebackTable::ParmTypeIsVectorShortBit >> ShiftBits; |
110 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
111 | break; |
112 | case VectorInt: |
113 | VectExtParamInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
114 | VectExtParamInfo |= |
115 | XCOFF::TracebackTable::ParmTypeIsVectorIntBit >> ShiftBits; |
116 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
117 | break; |
118 | case VectorFloat: |
119 | VectExtParamInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
120 | VectExtParamInfo |= |
121 | XCOFF::TracebackTable::ParmTypeIsVectorFloatBit >> ShiftBits; |
122 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
123 | break; |
124 | default: |
125 | break; |
126 | } |
127 | |
128 | |
129 | if (Bits >= 32) |
130 | break; |
131 | } |
132 | return Bits < 32 ? VectExtParamInfo << (32 - Bits) : VectExtParamInfo; |
133 | } |
134 | |
135 | uint32_t PPCFunctionInfo::getParmsType() const { |
136 | uint32_t ParamsTypeInfo = 0; |
137 | unsigned ShiftBits = 32 - XCOFF::TracebackTable::WidthOfParamType; |
138 | |
139 | int Bits = 0; |
140 | for (const auto &Elt : ParamtersType) { |
| 1 | Assuming '__begin1' is equal to '__end1' | |
|
141 | |
142 | if (Bits > 31 || (Bits > 30 && (Elt != FixedType || hasVectorParms()))) |
143 | break; |
144 | |
145 | switch (Elt) { |
146 | case FixedType: |
147 | if (hasVectorParms()) { |
148 | |
149 | ParamsTypeInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
150 | ParamsTypeInfo |= |
151 | XCOFF::TracebackTable::ParmTypeIsFixedBits >> ShiftBits; |
152 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
153 | } else { |
154 | |
155 | ParamsTypeInfo <<= 1; |
156 | ++Bits; |
157 | } |
158 | break; |
159 | case ShortFloatingPoint: |
160 | |
161 | ParamsTypeInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
162 | ParamsTypeInfo |= |
163 | XCOFF::TracebackTable::ParmTypeIsFloatingBits >> ShiftBits; |
164 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
165 | break; |
166 | case LongFloatingPoint: |
167 | |
168 | ParamsTypeInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
169 | ParamsTypeInfo |= |
170 | XCOFF::TracebackTable::ParmTypeIsDoubleBits >> ShiftBits; |
171 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
172 | break; |
173 | case VectorChar: |
174 | case VectorShort: |
175 | case VectorInt: |
176 | case VectorFloat: |
177 | |
178 | ParamsTypeInfo <<= XCOFF::TracebackTable::WidthOfParamType; |
179 | ParamsTypeInfo |= |
180 | XCOFF::TracebackTable::ParmTypeIsVectorBits >> ShiftBits; |
181 | Bits += XCOFF::TracebackTable::WidthOfParamType; |
182 | break; |
183 | } |
184 | } |
185 | |
186 | return Bits < 32 ? ParamsTypeInfo << (32 - Bits) : ParamsTypeInfo; |
| |
| 3 | | The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'uint32_t' |
|
187 | } |