diff options
| author | Jim Grosbach <grosbach@apple.com> | 2011-06-29 23:25:04 +0000 |
|---|---|---|
| committer | Jim Grosbach <grosbach@apple.com> | 2011-06-29 23:25:04 +0000 |
| commit | f6fd90910a552ad9883f031350ae517e26dfdb44 (patch) | |
| tree | 31d43ff65cd5719d0da919505c5f345b16a84f85 /utils/TableGen/ARMDecoderEmitter.cpp | |
| parent | 6531bddb86149b7e5c888fc9209456356b9361c6 (diff) | |
Remove redundant Thumb2 ADD/SUB SP instruction definitions.
Unlike Thumb1, Thumb2 does not have dedicated encodings for adjusting the
stack pointer. It can just use the normal add-register-immediate encoding
since it can use all registers as a source, not just R0-R7. The extra
instruction definitions are just duplicates of the normal instructions with
the (not well enforced) constraint that the source register was SP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134114 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'utils/TableGen/ARMDecoderEmitter.cpp')
| -rw-r--r-- | utils/TableGen/ARMDecoderEmitter.cpp | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/utils/TableGen/ARMDecoderEmitter.cpp b/utils/TableGen/ARMDecoderEmitter.cpp index a320e77b28..4ccab9b734 100644 --- a/utils/TableGen/ARMDecoderEmitter.cpp +++ b/utils/TableGen/ARMDecoderEmitter.cpp @@ -1640,12 +1640,8 @@ ARMDEBackend::populateInstruction(const CodeGenInstruction &CGI, // Ignore tADDrSP, tADDspr, and tPICADD, prefer the generic tADDhirr. // Ignore t2SUBrSPs, prefer the t2SUB[S]r[r|s]. // Ignore t2ADDrSPs, prefer the t2ADD[S]r[r|s]. - // Ignore t2ADDrSPi/t2SUBrSPi, which have more generic couterparts. - // Ignore t2ADDrSPi12/t2SUBrSPi12, which have more generic couterparts if (Name == "tADDrSP" || Name == "tADDspr" || Name == "tPICADD" || - Name == "t2SUBrSPs" || Name == "t2ADDrSPs" || - Name == "t2ADDrSPi" || Name == "t2SUBrSPi" || - Name == "t2ADDrSPi12" || Name == "t2SUBrSPi12") + Name == "t2SUBrSPs" || Name == "t2ADDrSPs") return false; // FIXME: Use ldr.n to work around a Darwin assembler bug. |