diff options
| author | Craig Topper <craig.topper@gmail.com> | 2012-11-25 00:15:07 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@gmail.com> | 2012-11-25 00:15:07 +0000 |
| commit | 915562e7620ef8a307c20df95bfb07f8514cf413 (patch) | |
| tree | ba4438fcadd0d6daa935331079613950b03e0ddb /lib | |
| parent | 134f78cf4166841227ad125363066507f484ad5d (diff) | |
Factor common code out of individual if blocks into common tail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168551 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 36 |
1 files changed, 12 insertions, 24 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index ec75b14cc4..6a1b5dd2e7 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -4204,6 +4204,7 @@ SelectionDAGBuilder::visitPow(const CallInst &I) { IntegerPartOfX = DAG.getNode(ISD::SHL, dl, MVT::i32, IntegerPartOfX, DAG.getConstant(23, TLI.getPointerTy())); + SDValue TwoToFractionalPartOfX; if (LimitFloatPrecision <= 6) { // For floating-point precision of 6: // @@ -4217,14 +4218,8 @@ SelectionDAGBuilder::visitPow(const CallInst &I) { SDValue t3 = DAG.getNode(ISD::FADD, dl, MVT::f32, t2, getF32Constant(DAG, 0x3f3c50c8)); SDValue t4 = DAG.getNode(ISD::FMUL, dl, MVT::f32, t3, X); - SDValue t5 = DAG.getNode(ISD::FADD, dl, MVT::f32, t4, - getF32Constant(DAG, 0x3f7f5e7e)); - SDValue t6 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, t5); - SDValue TwoToFractionalPartOfX = - DAG.getNode(ISD::ADD, dl, MVT::i32, t6, IntegerPartOfX); - - result = DAG.getNode(ISD::BITCAST, dl, - MVT::f32, TwoToFractionalPartOfX); + TwoToFractionalPartOfX = DAG.getNode(ISD::FADD, dl, MVT::f32, t4, + getF32Constant(DAG, 0x3f7f5e7e)); } else if (LimitFloatPrecision <= 12) { // For floating-point precision of 12: // @@ -4242,14 +4237,8 @@ SelectionDAGBuilder::visitPow(const CallInst &I) { SDValue t5 = DAG.getNode(ISD::FADD, dl, MVT::f32, t4, getF32Constant(DAG, 0x3f324b07)); SDValue t6 = DAG.getNode(ISD::FMUL, dl, MVT::f32, t5, X); - SDValue t7 = DAG.getNode(ISD::FADD, dl, MVT::f32, t6, - getF32Constant(DAG, 0x3f7ff8fd)); - SDValue t8 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, t7); - SDValue TwoToFractionalPartOfX = - DAG.getNode(ISD::ADD, dl, MVT::i32, t8, IntegerPartOfX); - - result = DAG.getNode(ISD::BITCAST, dl, - MVT::f32, TwoToFractionalPartOfX); + TwoToFractionalPartOfX = DAG.getNode(ISD::FADD, dl, MVT::f32, t6, + getF32Constant(DAG, 0x3f7ff8fd)); } else { // LimitFloatPrecision <= 18 // For floating-point precision of 18: // @@ -4278,15 +4267,14 @@ SelectionDAGBuilder::visitPow(const CallInst &I) { SDValue t11 = DAG.getNode(ISD::FADD, dl, MVT::f32, t10, getF32Constant(DAG, 0x3f317234)); SDValue t12 = DAG.getNode(ISD::FMUL, dl, MVT::f32, t11, X); - SDValue t13 = DAG.getNode(ISD::FADD, dl, MVT::f32, t12, - getF32Constant(DAG, 0x3f800000)); - SDValue t14 = DAG.getNode(ISD::BITCAST, dl, MVT::i32, t13); - SDValue TwoToFractionalPartOfX = - DAG.getNode(ISD::ADD, dl, MVT::i32, t14, IntegerPartOfX); - - result = DAG.getNode(ISD::BITCAST, dl, - MVT::f32, TwoToFractionalPartOfX); + TwoToFractionalPartOfX = DAG.getNode(ISD::FADD, dl, MVT::f32, t12, + getF32Constant(DAG, 0x3f800000)); } + + SDValue t13 = DAG.getNode(ISD::BITCAST, dl,MVT::i32,TwoToFractionalPartOfX); + result = DAG.getNode(ISD::BITCAST, dl, MVT::f32, + DAG.getNode(ISD::ADD, dl, MVT::i32, + t13, IntegerPartOfX)); } else { // No special expansion. result = DAG.getNode(ISD::FPOW, dl, |