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| author | Wang, Xin10 <xin10.wang@intel.com> | 2023-04-23 20:45:43 -0400 |
|---|---|---|
| committer | Wang, Xin10 <xin10.wang@intel.com> | 2023-04-23 20:46:34 -0400 |
| commit | 76cc9492121a402f7099f3fec822ea7192d3074e (patch) | |
| tree | 43a82ee44148259de9386be13225f021cdcc00fb /llvm/lib/CodeGen/IfConversion.cpp | |
| parent | 8e58b79f67a9f921733b105a874c0d4f69dd50da (diff) | |
| download | llvm-76cc9492121a402f7099f3fec822ea7192d3074e.zip llvm-76cc9492121a402f7099f3fec822ea7192d3074e.tar.gz llvm-76cc9492121a402f7099f3fec822ea7192d3074e.tar.bz2 | |
Clean come dead code
These codes deleted are dead code, we never go into it.
1. In AggressiveAntiDepBreaker.cpp, have assert AntiDepReg != 0.
2. IfConversion.cpp, Kind can only be one unique value, so isFalse && isRev
can never be true.
3. DAGCombiner.cpp, at line 3675, we have considered the condition like
```
// fold (sub x, c) -> (add x, -c)
if (N1C) {
return DAG.getNode(ISD::ADD, DL, VT, N0,
DAG.getConstant(-N1C->getAPIntValue(), DL, VT));
}
```
4. ScheduleDAGSDNodes.cpp, we have Latency > 1 at line 663
5. MasmParser.cpp, code exists in a switch-case block which decided by
the value FirstTokenKind, at line 1621, FirstTokenKind could only be
one of AsmToken::Dollar, AsmToken::At and AsmToken::Identifier.
Reviewed By: skan
Differential Revision: https://reviews.llvm.org/D148610
Diffstat (limited to 'llvm/lib/CodeGen/IfConversion.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/IfConversion.cpp | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/llvm/lib/CodeGen/IfConversion.cpp b/llvm/lib/CodeGen/IfConversion.cpp index b76867b..2ad5820 100644 --- a/llvm/lib/CodeGen/IfConversion.cpp +++ b/llvm/lib/CodeGen/IfConversion.cpp @@ -71,8 +71,6 @@ static cl::opt<bool> DisableTriangleR("disable-ifcvt-triangle-rev", cl::init(false), cl::Hidden); static cl::opt<bool> DisableTriangleF("disable-ifcvt-triangle-false", cl::init(false), cl::Hidden); -static cl::opt<bool> DisableTriangleFR("disable-ifcvt-triangle-false-rev", - cl::init(false), cl::Hidden); static cl::opt<bool> DisableDiamond("disable-ifcvt-diamond", cl::init(false), cl::Hidden); static cl::opt<bool> DisableForkedDiamond("disable-ifcvt-forked-diamond", @@ -532,7 +530,6 @@ bool IfConverter::runOnMachineFunction(MachineFunction &MF) { if (DisableTriangle && !isFalse && !isRev) break; if (DisableTriangleR && !isFalse && isRev) break; if (DisableTriangleF && isFalse && !isRev) break; - if (DisableTriangleFR && isFalse && isRev) break; LLVM_DEBUG(dbgs() << "Ifcvt (Triangle"); if (isFalse) LLVM_DEBUG(dbgs() << " false"); |