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| author | Michael Liao <michael.liao@intel.com> | 2012-10-24 04:09:32 +0000 |
|---|---|---|
| committer | Michael Liao <michael.liao@intel.com> | 2012-10-24 04:09:32 +0000 |
| commit | 991b6a22b6592b56ae890f30c478f835480e7cf5 (patch) | |
| tree | fe50bdd888096141ff05d8ac4492ff929a67f00a /lib | |
| parent | 2ef5bd3ba685704bc9c0d03654cb0b7fd1b071e6 (diff) | |
| download | llvm-991b6a22b6592b56ae890f30c478f835480e7cf5.tar.gz llvm-991b6a22b6592b56ae890f30c478f835480e7cf5.tar.bz2 llvm-991b6a22b6592b56ae890f30c478f835480e7cf5.tar.xz | |
Add custom conversion from v2u32 to v2f32 in 32-bit mode
- As there's no 64-bit GPRs in 32-bit mode, a custom conversion from v2u32 to
v2f32 is added to improve the efficiency of the code generated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166545 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 20 | ||||
| -rw-r--r-- | lib/Target/X86/X86InstrSSE.td | 4 |
2 files changed, 24 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index f73b9d64b9..7e8c82fce0 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -950,6 +950,10 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM) setOperationAction(ISD::UINT_TO_FP, MVT::v4i8, Custom); setOperationAction(ISD::UINT_TO_FP, MVT::v4i16, Custom); + // As there is no 64-bit GPR available, we need build a special custom + // sequence to convert from v2i32 to v2f32. + if (!Subtarget->is64Bit()) + setOperationAction(ISD::UINT_TO_FP, MVT::v2f32, Custom); setOperationAction(ISD::FP_EXTEND, MVT::v2f32, Custom); setOperationAction(ISD::FP_ROUND, MVT::v2f32, Custom); @@ -11754,6 +11758,22 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N, } return; } + case ISD::UINT_TO_FP: { + if (N->getOperand(0).getValueType() != MVT::v2i32 && + N->getValueType(0) != MVT::v2f32) + return; + SDValue ZExtIn = DAG.getNode(ISD::ZERO_EXTEND, dl, MVT::v2i64, + N->getOperand(0)); + SDValue Bias = DAG.getConstantFP(BitsToDouble(0x4330000000000000ULL), + MVT::f64); + SDValue VBias = DAG.getNode(ISD::BUILD_VECTOR, dl, MVT::v2f64, Bias, Bias); + SDValue Or = DAG.getNode(ISD::OR, dl, MVT::v2i64, ZExtIn, + DAG.getNode(ISD::BITCAST, dl, MVT::v2i64, VBias)); + Or = DAG.getNode(ISD::BITCAST, dl, MVT::v2f64, Or); + SDValue Sub = DAG.getNode(ISD::FSUB, dl, MVT::v2f64, Or, VBias); + Results.push_back(DAG.getNode(X86ISD::VFPROUND, dl, MVT::v4f32, Sub)); + return; + } case ISD::FP_ROUND: { SDValue V = DAG.getNode(X86ISD::VFPROUND, dl, MVT::v4f32, N->getOperand(0)); Results.push_back(V); diff --git a/lib/Target/X86/X86InstrSSE.td b/lib/Target/X86/X86InstrSSE.td index 26f78d7cca..e9c7f3e7f1 100644 --- a/lib/Target/X86/X86InstrSSE.td +++ b/lib/Target/X86/X86InstrSSE.td @@ -5882,6 +5882,8 @@ let Predicates = [HasAVX] in { (VPMOVZXDQrm addr:$src)>; def : Pat<(v2i64 (X86vzext (v4i32 (bitconvert (v2f64 (scalar_to_vector (loadf64 addr:$src))))))), (VPMOVZXDQrm addr:$src)>; + def : Pat<(v2i64 (X86vzext (v4i32 (bitconvert (v2i64 (X86vzload addr:$src)))))), + (VPMOVZXDQrm addr:$src)>; } let Predicates = [UseSSE41] in { @@ -5914,6 +5916,8 @@ let Predicates = [UseSSE41] in { (PMOVZXDQrm addr:$src)>; def : Pat<(v2i64 (X86vzext (v4i32 (bitconvert (v2f64 (scalar_to_vector (loadf64 addr:$src))))))), (PMOVZXDQrm addr:$src)>; + def : Pat<(v2i64 (X86vzext (v4i32 (bitconvert (v2i64 (X86vzload addr:$src)))))), + (PMOVZXDQrm addr:$src)>; } //===----------------------------------------------------------------------===// |