Add a comment which explains why the assert fired and how to fix it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166467 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2012-10-23 04:35:40 +00:00
parent 293e5d0e0a
commit c97410eed2

View File

@ -17,6 +17,10 @@ using namespace llvm;
/// @note This has to exist, because this is a pass, but it should never be
/// used.
TargetTransformInfo::TargetTransformInfo() : ImmutablePass(ID) {
/// You are seeing this error because your pass required the TTI
/// using a call to "getAnalysis<TargetTransformInfo>()", and you did
/// not initialize a machine target which can provide the TTI.
/// You should use "getAnalysisIfAvailable<TargetTransformInfo>()" instead.
report_fatal_error("Bad TargetTransformInfo ctor used. "
"Tool did not specify a TargetTransformInfo to use?");
}