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It looks like nobody is working on PR 4158, so I'm

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adding a check to catch this case at compile time
instead of quietly generating incorrect code.
That will at least let us identify CBE failures
that are not due to this problem.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73668 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2009-06-18 01:07:23 +00:00
parent 9e7d9883b0
commit 063989455d
1 changed files with 11 additions and 0 deletions
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11
lib/Target/CBackend/CBackend.cpp
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@ -1454,6 +1454,17 @@ std::string CWriter::GetValueName(const Value *Operand) {
/// writeInstComputationInline - Emit the computation for the specified
/// instruction inline, with no destination provided.
void CWriter::writeInstComputationInline(Instruction &I) {
// We can't currently support integer types other than 1, 8, 16, 32, 64.
// Validate this.
const Type *Ty = I.getType();
if (Ty->isInteger() && (Ty!=Type::Int1Ty && Ty!=Type::Int8Ty &&
Ty!=Type::Int16Ty && Ty!=Type::Int32Ty && Ty!=Type::Int64Ty)) {
cerr << "The C backend does not currently support integer "
<< "types of widths other than 1, 8, 16, 32, 64.\n";
cerr << "This is being tracked as PR 4158.\n";
abort();
}
// If this is a non-trivial bool computation, make sure to truncate down to
// a 1 bit value. This is important because we want "add i1 x, y" to return
// "0" when x and y are true, not "2" for example.