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authorDimitry Andric <dim@FreeBSD.org>2017-06-26 20:32:52 +0000
committerDimitry Andric <dim@FreeBSD.org>2017-06-26 20:32:52 +0000
commit08bbd35a80bf7765fe0d3043f9eb5a2f2786b649 (patch)
tree80108f0f128657f8623f8f66ad9735b4d88e7b47 /lib/Analysis/DemandedBits.cpp
parent7c7aba6e5fef47a01a136be655b0a92cfd7090f6 (diff)
Notes
Diffstat (limited to 'lib/Analysis/DemandedBits.cpp')
-rw-r--r--lib/Analysis/DemandedBits.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Analysis/DemandedBits.cpp b/lib/Analysis/DemandedBits.cpp
index 8f808f3e78719..926b28d6094a5 100644
--- a/lib/Analysis/DemandedBits.cpp
+++ b/lib/Analysis/DemandedBits.cpp
@@ -107,6 +107,8 @@ void DemandedBits::determineLiveOperandBits(
AB = AOut.byteSwap();
break;
case Intrinsic::bitreverse:
+ // The alive bits of the input are the reversed alive bits of
+ // the output.
AB = AOut.reverseBits();
break;
case Intrinsic::ctlz: