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2 Commits

Author SHA1 Message Date
Reid Kleckner
b3275b9fca Fix ARM intrinsics-overflow.ll test on Windows 
Windows on ARM only supports thumb mode execution, so we have to
explicitly pick some non-Windows OS to test ARM mode codegen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208448 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-09 21:52:48 +00:00
Louis Gerbarg
7a9fbab182 Add custom lowering for add/sub with overflow intrinsics to ARM 
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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@208435 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-05-09 17:02:49 +00:00