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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
..
2014-04-22 17:47:03 +00:00
2014-05-06 19:14:00 +00:00