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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:18 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:18 +0000 |
| commit | 4969310052f45b1e2e5d21735e38641a20be0e21 (patch) | |
| tree | 04e90cfba49332cd63f2bb6fbf495761d54f5a5c /include | |
| parent | 17174e59004d4df12f9037f0dc99ae530d71eab9 (diff) | |
| download | llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.gz llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.bz2 llvm-4969310052f45b1e2e5d21735e38641a20be0e21.tar.xz | |
SelectionDAG: Teach FoldConstantArithmetic how to deal with vectors.
This required disabling a PowerPC optimization that did the following:
input:
x = BUILD_VECTOR <i32 16, i32 16, i32 16, i32 16>
lowered to:
tmp = BUILD_VECTOR <i32 8, i32 8, i32 8, i32 8>
x = ADD tmp, tmp
The add now gets folded immediately and we're back at the BUILD_VECTOR we
started from. I don't see a way to fix this currently so I left it disabled
for now.
Fix some trivially foldable X86 tests too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174325 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/CodeGen/SelectionDAG.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/llvm/CodeGen/SelectionDAG.h b/include/llvm/CodeGen/SelectionDAG.h index 69bc3bb57f..c25497aa97 100644 --- a/include/llvm/CodeGen/SelectionDAG.h +++ b/include/llvm/CodeGen/SelectionDAG.h @@ -992,10 +992,8 @@ public: SDValue CreateStackTemporary(EVT VT1, EVT VT2); /// FoldConstantArithmetic - - SDValue FoldConstantArithmetic(unsigned Opcode, - EVT VT, - ConstantSDNode *Cst1, - ConstantSDNode *Cst2); + SDValue FoldConstantArithmetic(unsigned Opcode, EVT VT, + SDNode *Cst1, SDNode *Cst2); /// FoldSetCC - Constant fold a setcc to true or false. SDValue FoldSetCC(EVT VT, SDValue N1, |