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| author | Pengfei Wang <pengfei.wang@intel.com> | 2019-05-29 02:20:37 +0000 |
|---|---|---|
| committer | Pengfei Wang <pengfei.wang@intel.com> | 2019-05-29 02:20:37 +0000 |
| commit | 818c652643411667c054fd9a929c4c07941832b5 (patch) | |
| tree | ce5e8771bc44fe8cf6723d2283cac86bc9e292d0 /llvm/lib/CodeGen | |
| parent | 719322411ce62662bcd3bdc5ee9deb6c2c84ffb7 (diff) | |
| download | bcm5719-llvm-818c652643411667c054fd9a929c4c07941832b5.tar.gz bcm5719-llvm-818c652643411667c054fd9a929c4c07941832b5.zip | |
[X86] Use 'llvm_unreachable' instead of nullptr in unreachable code to
avoid static check fail
RegClassOrBank is an object of RegClassOrRegBank, which is defined as
using llvm::RegClassOrRegBank = typedef PointerUnion<const
TargetRegisterClass *, const RegisterBank *>
so control flow can not get here. Use ""llvm_unreachable" here to avoid
"null pointer" confusion.
Patch by Shengchen Kan (skan)
Differential Revision: https://reviews.llvm.org/D62006
Signed-off-by: pengfei <pengfei.wang@intel.com>
llvm-svn: 361912
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp index 55f10a2d065..c2fa813c7d7 100644 --- a/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp +++ b/llvm/lib/CodeGen/GlobalISel/RegisterBankInfo.cpp @@ -91,7 +91,9 @@ RegisterBankInfo::getRegBank(unsigned Reg, const MachineRegisterInfo &MRI, return RB; if (auto *RC = RegClassOrBank.dyn_cast<const TargetRegisterClass *>()) return &getRegBankFromRegClass(*RC); - return nullptr; + + llvm_unreachable("RegClassOrBank is either a const RegisterBank* or " + "a const TargetRegisterClass*"); } const TargetRegisterClass & |
