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Add "yield" and "unwind" instructions to SIL.

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This commit is contained in:
John McCall
2017-11-07 03:51:54 -05:00
parent 5c33d2106a
commit 14d6390352
28 changed files with 624 additions and 3 deletions
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18
lib/SILOptimizer/Utils/CFG.cpp
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@@ -307,9 +307,25 @@ void swift::changeBranchTarget(TermInst *T, unsigned EdgeIdx,
return;
}
case TermKind::YieldInst: {
auto *YI = cast<YieldInst>(T);
assert((EdgeIdx == 0 || EdgeIdx == 1) && "Invalid edge index");
auto *resumeBB = !EdgeIdx ? NewDest : YI->getResumeBB();
auto *unwindBB = EdgeIdx ? NewDest : YI->getUnwindBB();
SmallVector<SILValue, 4> yieldedValues;
for (auto value : YI->getYieldedValues())
yieldedValues.push_back(value);
B.createYield(YI->getLoc(), yieldedValues, resumeBB, unwindBB);
YI->eraseFromParent();
return;
}
case TermKind::ReturnInst:
case TermKind::ThrowInst:
case TermKind::UnreachableInst:
case TermKind::UnwindInst:
llvm_unreachable("Branch target cannot be changed for this terminator instruction!");
}
llvm_unreachable("Not yet implemented!");
@@ -469,6 +485,8 @@ void swift::replaceBranchTarget(TermInst *T, SILBasicBlock *OldDest,
case TermKind::ThrowInst:
case TermKind::TryApplyInst:
case TermKind::UnreachableInst:
case TermKind::UnwindInst:
case TermKind::YieldInst:
llvm_unreachable("Branch target cannot be replaced for this terminator instruction!");
}
llvm_unreachable("Not yet implemented!");