RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2025-05-13 10:56:01 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Properly lower DYNAMIC_STACKALLOC - bracket all black magic with

Browse Source 
CALLSEQ_BEGIN & CALLSEQ_END.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52225 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2008-06-11 20:16:42 +00:00
parent 797d95188d
commit 096b461b2e
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/Target/X86/X86ISelLowering.cpp
View File

@ -4814,6 +4814,8 @@ X86TargetLowering::LowerDYNAMIC_STACKALLOC(SDOperand Op,
MVT IntPtr = getPointerTy();
MVT SPTy = Subtarget->is64Bit() ? MVT::i64 : MVT::i32;
Chain = DAG.getCALLSEQ_START(Chain, DAG.getIntPtrConstant(0));
Chain = DAG.getCopyToReg(Chain, X86::EAX, Size, Flag);
Flag = Chain.getValue(1);
@ -4821,10 +4823,16 @@ X86TargetLowering::LowerDYNAMIC_STACKALLOC(SDOperand Op,
SDOperand Ops[] = { Chain,
DAG.getTargetExternalSymbol("_alloca", IntPtr),
DAG.getRegister(X86::EAX, IntPtr),
DAG.getRegister(X86StackPtr, SPTy),
Flag };
Chain = DAG.getNode(X86ISD::CALL, NodeTys, Ops, 4);
Chain = DAG.getNode(X86ISD::CALL, NodeTys, Ops, 5);
Flag = Chain.getValue(1);
Chain = DAG.getCALLSEQ_END(Chain,
DAG.getIntPtrConstant(0),
DAG.getIntPtrConstant(0),
Flag);
Chain = DAG.getCopyFromReg(Chain, X86StackPtr, SPTy).getValue(1);
std::vector<MVT> Tys;