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| author | Misha Brukman <brukman+llvm@gmail.com> | 2003-08-06 16:28:49 +0000 |
|---|---|---|
| committer | Misha Brukman <brukman+llvm@gmail.com> | 2003-08-06 16:28:49 +0000 |
| commit | dfd414ab770a389d29b7294f20e38cbf74c9f9a9 (patch) | |
| tree | 59cff411777dc71243801088439c8b7b1a90f316 | |
| parent | 0897c6082215da422a486274efc7bbee78ba9a43 (diff) | |
| download | external_llvm-dfd414ab770a389d29b7294f20e38cbf74c9f9a9.zip external_llvm-dfd414ab770a389d29b7294f20e38cbf74c9f9a9.tar.gz external_llvm-dfd414ab770a389d29b7294f20e38cbf74c9f9a9.tar.bz2 | |
Added asserts to prevent negative shift amounts from being generated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7640 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | support/tools/TableGen/CodeEmitterGen.cpp | 2 | ||||
| -rw-r--r-- | utils/TableGen/CodeEmitterGen.cpp | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/support/tools/TableGen/CodeEmitterGen.cpp b/support/tools/TableGen/CodeEmitterGen.cpp index 0769456..a2839c9 100644 --- a/support/tools/TableGen/CodeEmitterGen.cpp +++ b/support/tools/TableGen/CodeEmitterGen.cpp @@ -131,6 +131,7 @@ void CodeEmitterGen::run(std::ostream &o) { // Mask off the right bits // Low mask (ie. shift, if necessary) + assert(endBitInVar >= 0 && "Negative shift amount in masking!"); if (endBitInVar != 0) { o << " op" << OpOrder[Vals[i].getName()] << " >>= " << endBitInVar << ";\n"; @@ -143,6 +144,7 @@ void CodeEmitterGen::run(std::ostream &o) { << " &= (1<<" << beginBitInVar+1 << ") - 1;\n"; // Shift the value to the correct place (according to place in inst) + assert(endBitInInst >= 0 && "Negative shift amount in inst position!"); if (endBitInInst != 0) o << " op" << OpOrder[Vals[i].getName()] << " <<= " << endBitInInst << ";\n"; diff --git a/utils/TableGen/CodeEmitterGen.cpp b/utils/TableGen/CodeEmitterGen.cpp index 0769456..a2839c9 100644 --- a/utils/TableGen/CodeEmitterGen.cpp +++ b/utils/TableGen/CodeEmitterGen.cpp @@ -131,6 +131,7 @@ void CodeEmitterGen::run(std::ostream &o) { // Mask off the right bits // Low mask (ie. shift, if necessary) + assert(endBitInVar >= 0 && "Negative shift amount in masking!"); if (endBitInVar != 0) { o << " op" << OpOrder[Vals[i].getName()] << " >>= " << endBitInVar << ";\n"; @@ -143,6 +144,7 @@ void CodeEmitterGen::run(std::ostream &o) { << " &= (1<<" << beginBitInVar+1 << ") - 1;\n"; // Shift the value to the correct place (according to place in inst) + assert(endBitInInst >= 0 && "Negative shift amount in inst position!"); if (endBitInInst != 0) o << " op" << OpOrder[Vals[i].getName()] << " <<= " << endBitInInst << ";\n"; |