diff options
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp b/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp index a9f8f49d2f1..f1aa98b5e35 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombinePHI.cpp @@ -401,6 +401,12 @@ Instruction *InstCombiner::FoldPHIArgLoadIntoPHI(PHINode &PN) { /// require special-casing a cast from the 'i1' type. See the comment in /// FoldPHIArgOpIntoPHI() about pessimizing illegal integer types. Instruction *InstCombiner::FoldPHIArgZextsIntoPHI(PHINode &Phi) { + // We cannot create a new instruction after the PHI if the terminator is an + // EHPad because there is no valid insertion point. + if (TerminatorInst *TI = Phi.getParent()->getTerminator()) + if (TI->isEHPad()) + return nullptr; + // Early exit for the common case of a phi with two operands. These are // handled elsewhere. See the comment below where we check the count of zexts // and constants for more details. |
