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Improve the remark generated for -Rpass-missed.

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The current remark is ambiguous and makes it sounds like explicitly specifying vectorization will allow the loop to be vectorized. This is not the case. The improved remark directs the user to -Rpass-analysis=loop-vectorize to determine the cause of the pass-miss.

Reviewed by Arnold Schwaighofer`


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214445 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tyler Nowicki
2014-07-31 21:22:22 +00:00
parent db50d8bdaf
commit f7be7f15c1
4 changed files with 17 additions and 21 deletions
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30
lib/Transforms/Vectorize/LoopVectorize.cpp
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@ -1021,24 +1021,20 @@ public:
std::string emitRemark() const {
Report R;
R << "vectorization ";
switch (Force) {
case LoopVectorizeHints::FK_Disabled:
R << "is explicitly disabled";
break;
case LoopVectorizeHints::FK_Enabled:
R << "is explicitly enabled";
if (Width != 0 && Unroll != 0)
R << " with width " << Width << " and interleave count " << Unroll;
else if (Width != 0)
R << " with width " << Width;
else if (Unroll != 0)
R << " with interleave count " << Unroll;
break;
case LoopVectorizeHints::FK_Undefined:
R << "was not specified";
break;
if (Force == LoopVectorizeHints::FK_Disabled)
R << "vectorization is explicitly disabled";
else {
R << "use -Rpass-analysis=loop-vectorize for more info";
if (Force == LoopVectorizeHints::FK_Enabled) {
R << " (Force=true";
if (Width != 0)
R << ", Vector Width=" << Width;
if (Unroll != 0)
R << ", Interleave Count=" << Unroll;
R << ")";
}
}
return R.str();
}