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* Fix ARM intrinsics-overflow.ll test on WindowsReid Kleckner2014-05-091-1/+1
| | | | | | | Windows on ARM only supports thumb mode execution, so we have to explicitly pick some non-Windows OS to test ARM mode codegen. llvm-svn: 208448
* Add custom lowering for add/sub with overflow intrinsics to ARMLouis Gerbarg2014-05-091-0/+57
This patch adds support to ARM for custom lowering of the llvm.{u|s}add.with.overflow.i32 intrinsics for i32/i64. This is particularly useful for handling idiomatic saturating math functions as generated by InstCombineCompare. Test cases included. rdar://14853450 llvm-svn: 208435
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