reapply r101434
with a fix for self-hosting
rotate CallInst operands, i.e. move callee to the back
of the operand array
the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101465 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
index cd41844..4144770 100644
--- a/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
+++ b/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
@@ -732,10 +732,10 @@
// the right place.
Instruction *NewVal;
if (InputBit > ResultBit)
- NewVal = BinaryOperator::CreateLShr(I->getOperand(1),
+ NewVal = BinaryOperator::CreateLShr(II->getOperand(0),
ConstantInt::get(I->getType(), InputBit-ResultBit));
else
- NewVal = BinaryOperator::CreateShl(I->getOperand(1),
+ NewVal = BinaryOperator::CreateShl(II->getOperand(0),
ConstantInt::get(I->getType(), ResultBit-InputBit));
NewVal->takeName(I);
return InsertNewInstBefore(NewVal, *I);
@@ -1052,12 +1052,12 @@
case Intrinsic::x86_sse2_mul_sd:
case Intrinsic::x86_sse2_min_sd:
case Intrinsic::x86_sse2_max_sd:
- TmpV = SimplifyDemandedVectorElts(II->getOperand(1), DemandedElts,
+ TmpV = SimplifyDemandedVectorElts(II->getOperand(0), DemandedElts,
UndefElts, Depth+1);
- if (TmpV) { II->setOperand(1, TmpV); MadeChange = true; }
- TmpV = SimplifyDemandedVectorElts(II->getOperand(2), DemandedElts,
+ if (TmpV) { II->setOperand(0, TmpV); MadeChange = true; }
+ TmpV = SimplifyDemandedVectorElts(II->getOperand(1), DemandedElts,
UndefElts2, Depth+1);
- if (TmpV) { II->setOperand(2, TmpV); MadeChange = true; }
+ if (TmpV) { II->setOperand(1, TmpV); MadeChange = true; }
// If only the low elt is demanded and this is a scalarizable intrinsic,
// scalarize it now.
@@ -1069,8 +1069,8 @@
case Intrinsic::x86_sse2_sub_sd:
case Intrinsic::x86_sse2_mul_sd:
// TODO: Lower MIN/MAX/ABS/etc
- Value *LHS = II->getOperand(1);
- Value *RHS = II->getOperand(2);
+ Value *LHS = II->getOperand(0);
+ Value *RHS = II->getOperand(1);
// Extract the element as scalars.
LHS = InsertNewInstBefore(ExtractElementInst::Create(LHS,
ConstantInt::get(Type::getInt32Ty(I->getContext()), 0U)), *II);