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| author | Owen Anderson <resistor@mac.com> | 2011-08-11 19:00:18 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2011-08-11 19:00:18 +0000 |
| commit | 3477f2cea5341034d154e2fd977c9ab470d609b7 (patch) | |
| tree | 040509ff82a133f1ddbd80be4ac34dff7387a788 /llvm/lib/Target/ARM | |
| parent | 043c820800e69427fdbd0b5c17b848cb43be6128 (diff) | |
| download | bcm5719-llvm-3477f2cea5341034d154e2fd977c9ab470d609b7.tar.gz bcm5719-llvm-3477f2cea5341034d154e2fd977c9ab470d609b7.zip | |
Tighten decoding of addrmode2 instructions to reject more UNPREDICTABLE cases.
llvm-svn: 137325
Diffstat (limited to 'llvm/lib/Target/ARM')
| -rw-r--r-- | llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 8a85cfade1c..85e48c7165e 100644 --- a/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/llvm/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -978,6 +978,8 @@ static bool DecodeAddrMode2IdxInstruction(llvm::MCInst &Inst, unsigned Insn, else if (!P && writeback) idx_mode = ARMII::IndexModePost; + if (writeback && (Rn == 15 || Rn == Rt)) return false; // UNPREDICTABLE + if (reg) { if (!DecodeGPRnopcRegisterClass(Inst, Rm, Address, Decoder)) return false; ARM_AM::ShiftOpc Opc = ARM_AM::lsl; |
