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Make x86 isel lowering produce tailcall nodes. They are match to normal calls

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for now.

Patch contributed by Alexander Friedman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27994 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-04-27 08:40:39 +00:00
parent 43824e8216
commit fea89c14ec
2 changed files with 17 additions and 1 deletions
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2
lib/Target/X86/X86ISelLowering.cpp
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@ -1203,7 +1203,7 @@ X86TargetLowering::LowerFastCCCallTo(SDOperand Chain, const Type *RetTy,
Ops.push_back(InFlag);
// FIXME: Do not generate X86ISD::TAILCALL for now.
Chain = DAG.getNode(X86ISD::CALL, NodeTys, Ops);
Chain = DAG.getNode(isTailCall ? X86ISD::TAILCALL : X86ISD::CALL, NodeTys, Ops);
InFlag = Chain.getValue(1);
NodeTys.clear();

16
lib/Target/X86/X86InstrInfo.td
View File

@ -75,6 +75,9 @@ def X86callseq_end :
def X86call : SDNode<"X86ISD::CALL", SDT_X86Call,
[SDNPHasChain, SDNPOutFlag, SDNPOptInFlag]>;
def X86tailcall : SDNode<"X86ISD::TAILCALL", SDT_X86Call,
[SDNPHasChain, SDNPOutFlag, SDNPOptInFlag]>;
def X86rep_stos: SDNode<"X86ISD::REP_STOS", SDTX86RepStr,
[SDNPHasChain, SDNPInFlag, SDNPOutFlag]>;
def X86rep_movs: SDNode<"X86ISD::REP_MOVS", SDTX86RepStr,
@ -2329,6 +2332,19 @@ def : Pat<(store (X86Wrapper texternalsym:$src), addr:$dst),
(MOV32mi addr:$dst, texternalsym:$src)>;
// Calls
def : Pat<(X86tailcall R32:$dst),
(CALL32r R32:$dst)>;
def : Pat<(X86tailcall (loadi32 addr:$dst)),
(CALL32m addr:$dst)>;
def : Pat<(X86tailcall tglobaladdr:$dst),
(CALLpcrel32 tglobaladdr:$dst)>;
def : Pat<(X86tailcall texternalsym:$dst),
(CALLpcrel32 texternalsym:$dst)>;
def : Pat<(X86call tglobaladdr:$dst),
(CALLpcrel32 tglobaladdr:$dst)>;
def : Pat<(X86call texternalsym:$dst),