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| author | Eli Friedman <eli.friedman@gmail.com> | 2009-03-04 06:23:34 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2009-03-04 06:23:34 +0000 |
| commit | 27759f41ca1c930e2860275c9ba2567a5890d7d2 (patch) | |
| tree | 6331eaebfa4020fea86091447d60ff36648975ac | |
| parent | 29582d1223d2cd851e136bfe39c508930c4b5592 (diff) | |
| download | llvm-27759f41ca1c930e2860275c9ba2567a5890d7d2.tar.gz llvm-27759f41ca1c930e2860275c9ba2567a5890d7d2.tar.bz2 llvm-27759f41ca1c930e2860275c9ba2567a5890d7d2.tar.xz | |
PR3686: make the legalizer handle bitcast from i80 to x86 long double.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66021 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp | 7 | ||||
| -rw-r--r-- | lib/CodeGen/SelectionDAG/LegalizeTypes.h | 1 | ||||
| -rw-r--r-- | test/CodeGen/X86/2009-03-03-BitcastLongDouble.ll | 12 |
3 files changed, 20 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp index 661391be4d..3cc8f966aa 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp @@ -667,6 +667,7 @@ bool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) { abort(); case ISD::ANY_EXTEND: Res = PromoteIntOp_ANY_EXTEND(N); break; + case ISD::BIT_CONVERT: Res = PromoteIntOp_BIT_CONVERT(N); break; case ISD::BR_CC: Res = PromoteIntOp_BR_CC(N, OpNo); break; case ISD::BRCOND: Res = PromoteIntOp_BRCOND(N, OpNo); break; case ISD::BUILD_PAIR: Res = PromoteIntOp_BUILD_PAIR(N); break; @@ -745,6 +746,12 @@ SDValue DAGTypeLegalizer::PromoteIntOp_ANY_EXTEND(SDNode *N) { return DAG.getNode(ISD::ANY_EXTEND, N->getDebugLoc(), N->getValueType(0), Op); } +SDValue DAGTypeLegalizer::PromoteIntOp_BIT_CONVERT(SDNode *N) { + // This should only occur in unusual situations like bitcasting to an + // x86_fp80, so just turn it into a store+load + return CreateStackStoreLoad(N->getOperand(0), N->getValueType(0)); +} + SDValue DAGTypeLegalizer::PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo) { assert(OpNo == 2 && "Don't know how to promote this operand!"); diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.h b/lib/CodeGen/SelectionDAG/LegalizeTypes.h index 4228f560bd..b50e127bef 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeTypes.h +++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.h @@ -285,6 +285,7 @@ private: // Integer Operand Promotion. bool PromoteIntegerOperand(SDNode *N, unsigned OperandNo); SDValue PromoteIntOp_ANY_EXTEND(SDNode *N); + SDValue PromoteIntOp_BIT_CONVERT(SDNode *N); SDValue PromoteIntOp_BUILD_PAIR(SDNode *N); SDValue PromoteIntOp_BR_CC(SDNode *N, unsigned OpNo); SDValue PromoteIntOp_BRCOND(SDNode *N, unsigned OpNo); diff --git a/test/CodeGen/X86/2009-03-03-BitcastLongDouble.ll b/test/CodeGen/X86/2009-03-03-BitcastLongDouble.ll new file mode 100644 index 0000000000..2b493e6eac --- /dev/null +++ b/test/CodeGen/X86/2009-03-03-BitcastLongDouble.ll @@ -0,0 +1,12 @@ +; RUN: llvm-as < %s | llc -march=x86 +; PR3686 +define i32 @x(i32 %y) nounwind readnone { +entry: + %tmp14 = zext i32 %y to i80 ; <i80> [#uses=1] + %tmp15 = bitcast i80 %tmp14 to x86_fp80 ; <x86_fp80> [#uses=1] + %add = add x86_fp80 %tmp15, 0xK3FFF8000000000000000 ; <x86_fp80> [#uses=1] + %tmp11 = bitcast x86_fp80 %add to i80 ; <i80> [#uses=1] + %tmp10 = trunc i80 %tmp11 to i32 ; <i32> [#uses=1] + ret i32 %tmp10 +} + |