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| author | Owen Anderson <resistor@mac.com> | 2012-09-19 22:15:06 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2012-09-19 22:15:06 +0000 |
| commit | eb79b545fc347142eba44a7ffd29d426da3281ec (patch) | |
| tree | 55d04e51783fd12c2f025433340a3cb921cd4739 /utils/TableGen | |
| parent | cdac1be34a0b329f1bd2232a3f4995432f633c3c (diff) | |
| download | external_llvm-eb79b545fc347142eba44a7ffd29d426da3281ec.zip external_llvm-eb79b545fc347142eba44a7ffd29d426da3281ec.tar.gz external_llvm-eb79b545fc347142eba44a7ffd29d426da3281ec.tar.bz2 | |
Soften the pattern-can-never-match error in TableGen into a warning. This pattern can be very useful in cases where you want to define a multiclass that covers both commutative and non-commutative operators (say, add and sub).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164256 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen')
| -rw-r--r-- | utils/TableGen/CodeGenDAGPatterns.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp index 443a662..c91ec95 100644 --- a/utils/TableGen/CodeGenDAGPatterns.cpp +++ b/utils/TableGen/CodeGenDAGPatterns.cpp @@ -2800,8 +2800,11 @@ void CodeGenDAGPatterns::AddPatternToMatch(const TreePattern *Pattern, const PatternToMatch &PTM) { // Do some sanity checking on the pattern we're about to match. std::string Reason; - if (!PTM.getSrcPattern()->canPatternMatch(Reason, *this)) - Pattern->error("Pattern can never match: " + Reason); + if (!PTM.getSrcPattern()->canPatternMatch(Reason, *this)) { + PrintWarning(Pattern->getRecord()->getLoc(), + Twine("Pattern can never match: ") + Reason); + return; + } // If the source pattern's root is a complex pattern, that complex pattern // must specify the nodes it can potentially match. |