diff options
| author | Owen Anderson <resistor@mac.com> | 2011-08-26 06:19:51 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2011-08-26 06:19:51 +0000 |
| commit | 9bd655dcde1cfa1b97014e2d8e4f9845f7d474bb (patch) | |
| tree | bdfe9244627b8eed78a61892241dae30ebcb4e43 /lib/Target/ARM/Disassembler/ARMDisassembler.cpp | |
| parent | 8fd13b6de51186ba38c69c4043fc7288a6fc6b8b (diff) | |
Fix PR10755 by checking for invalid predicate codes from UNPREDICTABLE t2IT instructions when decoding their successors.
This is the last disassembly crash detected by exhaustive Thumb2 instruction space. Major thanks to Chandler Carruth for making this kind of exhaustive testing possible.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138625 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/Disassembler/ARMDisassembler.cpp')
| -rw-r--r-- | lib/Target/ARM/Disassembler/ARMDisassembler.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp index 0d945fdf59..f1c5ce8bc5 100644 --- a/lib/Target/ARM/Disassembler/ARMDisassembler.cpp +++ b/lib/Target/ARM/Disassembler/ARMDisassembler.cpp @@ -376,6 +376,8 @@ void ThumbDisassembler::AddThumbPredicate(MCInst &MI) const { unsigned CC; if (!ITBlock.empty()) { CC = ITBlock.back(); + if (CC == 0xF) + CC = ARMCC::AL; ITBlock.pop_back(); } else CC = ARMCC::AL; |