diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/CodeGen/MIRPrinter.cpp | 11 | ||||
| -rw-r--r-- | llvm/test/CodeGen/MIR/X86/inline-asm.mir | 12 |
2 files changed, 21 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/MIRPrinter.cpp b/llvm/lib/CodeGen/MIRPrinter.cpp index 849866a1040..789ab092998 100644 --- a/llvm/lib/CodeGen/MIRPrinter.cpp +++ b/llvm/lib/CodeGen/MIRPrinter.cpp @@ -16,6 +16,7 @@ #include "llvm/ADT/STLExtras.h" #include "llvm/ADT/SmallBitVector.h" +#include "llvm/ADT/StringExtras.h" #include "llvm/CodeGen/GlobalISel/RegisterBank.h" #include "llvm/CodeGen/MIRYamlMapping.h" #include "llvm/CodeGen/MachineConstantPool.h" @@ -924,11 +925,17 @@ void MIPrinter::print(const MachineOperand &Op, const TargetRegisterInfo *TRI, case MachineOperand::MO_JumpTableIndex: OS << "%jump-table." << Op.getIndex(); break; - case MachineOperand::MO_ExternalSymbol: + case MachineOperand::MO_ExternalSymbol: { + StringRef Name = Op.getSymbolName(); OS << '$'; - printLLVMNameWithoutPrefix(OS, Op.getSymbolName()); + if (Name.empty()) { + OS << "\"\""; + } else { + printLLVMNameWithoutPrefix(OS, Name); + } printOffset(Op.getOffset()); break; + } case MachineOperand::MO_GlobalAddress: Op.getGlobal()->printAsOperand(OS, /*PrintType=*/false, MST); printOffset(Op.getOffset()); diff --git a/llvm/test/CodeGen/MIR/X86/inline-asm.mir b/llvm/test/CodeGen/MIR/X86/inline-asm.mir new file mode 100644 index 00000000000..be96517144b --- /dev/null +++ b/llvm/test/CodeGen/MIR/X86/inline-asm.mir @@ -0,0 +1,12 @@ +# RUN: llc -o - %s -mtriple=x86_64-- -run-pass none | FileCheck %s +--- +# Avoid crash/assert when using an emptystring in an INLINEASM. +# CHECK-LABEL: name: emptystring +# CHECK: bb.0: +# CHECK: INLINEASM $"", 1 +# CHECK: RET 0 +name: emptystring +body: | + bb.0: + INLINEASM $"", 1 + RET 0 |
