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authorFlorian Hahn <florian.hahn@arm.com>2017-08-04 10:40:18 +0000
committerFlorian Hahn <florian.hahn@arm.com>2017-08-04 10:40:18 +0000
commit83e57c2327028e39ef9b6e9cb3c85c85556e6c92 (patch)
tree41f32de0d19153fa132cfcad8229f61941b6bf16 /llvm/lib/Bitcode/Writer/BitcodeWriter.cpp
parentce6080819ce8fe0f9cd77f327814574eb68c0d49 (diff)
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[Driver] Error if ARM mode was selected explicitly for M-profile CPUs.
Summary: M-class profiles do not support ARM execution mode, so providing -marm/-mno-thumb does not make sense in combination with -mcpu/-march options that support the M-profile. This is a follow-up patch to D35569 and it seemed pretty clear that we should emit an error in the driver in this case. We probably also should warn/error if the provided -mcpu/-march options do not match, e.g. -mcpu=cortex-m0 -march=armv8-a is invalid, as cortex-m0 does not support armv8-a. But that should be a separate patch I think. Reviewers: echristo, richard.barton.arm, rengolin, labrinea, charles.baylis Reviewed By: rengolin Subscribers: aemerson, javed.absar, kristof.beyls, cfe-commits Differential Revision: https://reviews.llvm.org/D35826 llvm-svn: 310047
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