diff options
| author | Dimitry Andric <dim@FreeBSD.org> | 2021-04-26 11:23:24 +0000 |
|---|---|---|
| committer | Dimitry Andric <dim@FreeBSD.org> | 2021-06-13 20:01:15 +0000 |
| commit | d409305fa3838fb39b38c26fc085fb729b8766d5 (patch) | |
| tree | fd234b27775fb59a57266cf36a05ec916e79a85f /contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp | |
| parent | e8d8bef961a50d4dc22501cde4fb9fb0be1b2532 (diff) | |
| parent | b4125f7d51da2bb55d3b850dba9a69c201c3422c (diff) | |
Diffstat (limited to 'contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp')
| -rw-r--r-- | contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp index 62f7f3d98ba6..0ff77d4ba1ab 100644 --- a/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/contrib/llvm-project/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -261,12 +261,16 @@ bool FastISel::hasTrivialKill(const Value *V) { if (GEP->hasAllZeroIndices() && !hasTrivialKill(GEP->getOperand(0))) return false; + // Casts and extractvalues may be trivially coalesced by fast-isel. + if (I->getOpcode() == Instruction::BitCast || + I->getOpcode() == Instruction::PtrToInt || + I->getOpcode() == Instruction::IntToPtr || + I->getOpcode() == Instruction::ExtractValue) + return false; + // Only instructions with a single use in the same basic block are considered // to have trivial kills. return I->hasOneUse() && - !(I->getOpcode() == Instruction::BitCast || - I->getOpcode() == Instruction::PtrToInt || - I->getOpcode() == Instruction::IntToPtr) && cast<Instruction>(*I->user_begin())->getParent() == I->getParent(); } |