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5 Commits

Author SHA1 Message Date
Jim Grosbach
a7603982db ARMv7M vs. ARMv7E-M support. 
The DSP instructions in the Thumb2 instruction set are an optional extension
in the Cortex-M* archtitecture. When present, the implementation is considered
an "ARMv7E-M implementation," and when not, an "ARMv7-M implementation."

Add a subtarget feature hook for the v7e-m instructions and hook it up. The
cortex-m3 cpu is an example of a v7m implementation, while the cortex-m4 is
a v7e-m implementation.

rdar://9572992



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134261 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-01 21:12:19 +00:00
Dan Gohman
fce288fc91 Eliminate more uses of llvm-as and llvm-dis. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81293 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-09 00:09:15 +00:00
Evan Cheng
b620724e61 Fix Thumb2 function call isel. Thumb1 and Thumb2 should share the same 
instructions for calls since BL and BLX are always 32-bit long and BX is always
16-bit long.

Also, we should be using BLX to call external function stubs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77756 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-01 00:16:10 +00:00
David Goodwin
f1daf7d8ab Use common code for both ARM and Thumb-2 instruction and register info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75067 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-08 23:10:31 +00:00
Evan Cheng
5b9fcd1c8e Add some more Thumb2 multiplication instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-07-07 01:17:28 +00:00