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author | Evan Cheng <evan.cheng@apple.com> | 2009-10-18 18:16:27 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2009-10-18 18:16:27 +0000 |
commit | ff89dcb06fbd103373436e2d0ae85f252fae2254 (patch) | |
tree | a9c2c0c4ab7512a79f6bd15d41caa381e2cccf7c /lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp | |
parent | 20270c909357e5e501cac1f5393430dfacfc57d8 (diff) | |
download | external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.zip external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.tar.gz external_llvm-ff89dcb06fbd103373436e2d0ae85f252fae2254.tar.bz2 |
-Revert parts of 84326 and 84411. Distinquishing between fixed and non-fixed
stack slots and giving them different PseudoSourceValue's did not fix the
problem of post-alloc scheduling miscompiling llvm itself.
- Apply Dan's conservative workaround by assuming any non fixed stack slots can
alias other memory locations. This means a load from spill slot #1 cannot
move above a store of spill slot #2.
- Enable post-alloc scheduling for x86 at optimization leverl Default and above.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84424 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp')
-rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp index 29f1a2d..dbd3e39 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeTypesGeneric.cpp @@ -118,7 +118,8 @@ void DAGTypeLegalizer::ExpandRes_BIT_CONVERT(SDNode *N, SDValue &Lo, TLI.getTargetData()->getPrefTypeAlignment(NOutVT. getTypeForEVT(*DAG.getContext())); SDValue StackPtr = DAG.CreateStackTemporary(InVT, Alignment); - const Value *SV = PseudoSourceValue::getStack(); + int SPFI = cast<FrameIndexSDNode>(StackPtr.getNode())->getIndex(); + const Value *SV = PseudoSourceValue::getFixedStack(SPFI); // Emit a store to the stack slot. SDValue Store = DAG.getStore(DAG.getEntryNode(), dl, InOp, StackPtr, SV, 0); |