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reapply r101434

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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
This commit is contained in:
Gabor Greif
2010-04-16 15:33:14 +00:00
parent 52d55bd224
commit 4ec2258ffb
44 changed files with 579 additions and 588 deletions
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lib/CodeGen/GCStrategy.cpp
+3 -3
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@@ -271,7 +271,7 @@ bool LowerIntrinsics::PerformDefaultLowering(Function &F, GCStrategy &S) {
case Intrinsic::gcwrite:
if (LowerWr) {
// Replace a write barrier with a simple store.
Value *St = new StoreInst(CI->getOperand(1), CI->getOperand(3), CI);
Value *St = new StoreInst(CI->getOperand(0), CI->getOperand(2), CI);
CI->replaceAllUsesWith(St);
CI->eraseFromParent();
}
@@ -279,7 +279,7 @@ bool LowerIntrinsics::PerformDefaultLowering(Function &F, GCStrategy &S) {
case Intrinsic::gcread:
if (LowerRd) {
// Replace a read barrier with a simple load.
Value *Ld = new LoadInst(CI->getOperand(2), "", CI);
Value *Ld = new LoadInst(CI->getOperand(1), "", CI);
Ld->takeName(CI);
CI->replaceAllUsesWith(Ld);
CI->eraseFromParent();
@@ -290,7 +290,7 @@ bool LowerIntrinsics::PerformDefaultLowering(Function &F, GCStrategy &S) {
// Initialize the GC root, but do not delete the intrinsic. The
// backend needs the intrinsic to flag the stack slot.
Roots.push_back(cast<AllocaInst>(
CI->getOperand(1)->stripPointerCasts()));
CI->getOperand(0)->stripPointerCasts()));
}
break;
default: