diff options
| -rw-r--r-- | llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 11 | ||||
| -rw-r--r-- | llvm/test/MC/ARM/thumb2-ldrd.s | 9 |
2 files changed, 20 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index edb7ccdc293..ce4933d8dfd 100644 --- a/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/llvm/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -5355,6 +5355,17 @@ validateInstruction(MCInst &Inst, "destination operands must be sequential"); return false; } + case ARM::t2LDRDi8: + case ARM::t2LDRD_PRE: + case ARM::t2LDRD_POST: { + // Rt2 must different from Rt. + unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg()); + unsigned Rt2 = MRI->getEncodingValue(Inst.getOperand(1).getReg()); + if (Rt2 == Rt) + return Error(Operands[3]->getStartLoc(), + "destination operands can't be identical"); + return false; + } case ARM::STRD: { // Rt2 must be Rt + 1. unsigned Rt = MRI->getEncodingValue(Inst.getOperand(0).getReg()); diff --git a/llvm/test/MC/ARM/thumb2-ldrd.s b/llvm/test/MC/ARM/thumb2-ldrd.s new file mode 100644 index 00000000000..4463c21fe8c --- /dev/null +++ b/llvm/test/MC/ARM/thumb2-ldrd.s @@ -0,0 +1,9 @@ +// RUN: not llvm-mc -arch thumb -mattr=+thumb2 \ +// RUN: < %s >/dev/null 2> %t +// RUN: grep "error: destination operands can't be identical" %t | count 4 +// rdar://14479780 + +ldrd r0, r0, [pc, #0] +ldrd r0, r0, [r1, #4] +ldrd r0, r0, [r1], #4 +ldrd r0, r0, [r1, #4]! |
