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Add a lint check for indirectbr with no successors.

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llvm-svn: 110074
This commit is contained in:
Dan Gohman 2010-08-02 23:06:43 +00:00
parent f18faa5945
commit abb2503036
2 changed files with 6 additions and 1 deletions
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3
lib/Analysis/Lint.cpp
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@ -519,6 +519,9 @@ void Lint::visitVAArgInst(VAArgInst &I) {
void Lint::visitIndirectBrInst(IndirectBrInst &I) {
visitMemoryReference(I, I.getAddress(), ~0u, 0, 0, MemRef::Branchee);
Assert1(I.getNumDestinations() != 0,
"Undefined behavior: indirectbr with no destinations", &I);
}
void Lint::visitExtractElementInst(ExtractElementInst &I) {

4
test/Other/lint.ll
View File

@ -161,5 +161,7 @@ declare i32 @nonstruct_callee() nounwind
define void @struct_caller() nounwind {
entry:
call %struct bitcast (i32 ()* @foo to %struct ()*)()
ret void
; CHECK: Undefined behavior: indirectbr with no destinations
indirectbr i8* null, []
}