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| author | Jim Grosbach <grosbach@apple.com> | 2011-08-25 17:23:55 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-08-25 17:23:55 +0000 |
| commit | 0c49ac05cd2374a99a3126ebe6c8370490a73ca5 (patch) | |
| tree | 1274ac58db8c6a400595d7af0b02eaeab0bbb023 | |
| parent | ebc1db0facf4748b14c901032f0afb3d5ff56c2e (diff) | |
Explicitly disallow predication in Thumb1 assembly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138562 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp index f5d2a0ea3d..f0d74f3345 100644 --- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp +++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp @@ -2952,6 +2952,12 @@ bool ARMAsmParser::ParseInstruction(StringRef Name, SMLoc NameLoc, Mnemonic = splitMnemonic(Mnemonic, PredicationCode, CarrySetting, ProcessorIMod); + // In Thumb1, only the branch (B) instruction can be predicated. + if (isThumbOne() && PredicationCode != ARMCC::AL && Mnemonic != "b") { + Parser.EatToEndOfStatement(); + return Error(NameLoc, "conditional execution not supported in Thumb1"); + } + Operands.push_back(ARMOperand::CreateToken(Mnemonic, NameLoc)); // FIXME: This is all a pretty gross hack. We should automatically handle |