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| author | Rafael Espindola <rafael.espindola@gmail.com> | 2012-04-04 12:51:34 +0000 |
|---|---|---|
| committer | Rafael Espindola <rafael.espindola@gmail.com> | 2012-04-04 12:51:34 +0000 |
| commit | 26c8dcc692fb2addd475446cfff24d6a4e958bca (patch) | |
| tree | b71cb0d781e2735397c728f276f14ea63780d04c /include/llvm/CodeGen/SelectionDAG.h | |
| parent | 00b73a5e443d49d68f59a5fb517e940842423ae6 (diff) | |
| download | llvm-26c8dcc692fb2addd475446cfff24d6a4e958bca.tar.gz llvm-26c8dcc692fb2addd475446cfff24d6a4e958bca.tar.bz2 llvm-26c8dcc692fb2addd475446cfff24d6a4e958bca.tar.xz | |
Always compute all the bits in ComputeMaskedBits.
This allows us to keep passing reduced masks to SimplifyDemandedBits, but
know about all the bits if SimplifyDemandedBits fails. This allows instcombine
to simplify cases like the one in the included testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154011 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/CodeGen/SelectionDAG.h')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index aae4ee182b..6a7a87e866 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -980,8 +980,8 @@ public: /// bitsets. This code only analyzes bits in Mask, in order to short-circuit /// processing. Targets can implement the computeMaskedBitsForTargetNode /// method in the TargetLowering class to allow target nodes to be understood. - void ComputeMaskedBits(SDValue Op, const APInt &Mask, APInt &KnownZero, - APInt &KnownOne, unsigned Depth = 0) const; + void ComputeMaskedBits(SDValue Op, APInt &KnownZero, APInt &KnownOne, + unsigned Depth = 0) const; /// ComputeNumSignBits - Return the number of times the sign bit of the /// register is replicated into the other bits. We know that at least 1 bit |