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David Majnemer 475b056c9a InstCombine, InstSimplify: (%X /s C1) /s C2 isn't always 0 when C1 * C2 overflow
consider:
C1 = INT_MIN
C2 = -1

C1 * C2 overflows without a doubt but consider the following:
%x = i32 INT_MIN

This means that (%X /s C1) is 1 and (%X /s C1) /s C2 is -1.

N. B.  Move the unsigned version of this transform to InstSimplify, it
doesn't create any new instructions.

This fixes PR21243.

llvm-svn: 219567
2014-10-11 10:20:01 +00:00
2014-09-02 22:28:02 +00:00
2014-04-07 03:57:04 +00:00
2014-03-02 13:08:46 +00:00
2014-06-25 13:13:36 +00:00
2014-03-12 22:40:22 +00:00
2014-04-26 19:05:45 +00:00

Low Level Virtual Machine (LLVM)
================================

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