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| author | Akira Hatanaka <ahatanaka@mips.com> | 2011-12-09 01:45:12 +0000 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@mips.com> | 2011-12-09 01:45:12 +0000 |
| commit | 0dca9456c55787cd5a5f11b388aa76586b4fcdf6 (patch) | |
| tree | 5d8aaa9c965f72a139c5c5531e97379b42ef33c9 | |
| parent | f5b9a74f0a13afe3b7a8388be81e4062b63e4c30 (diff) | |
| download | llvm-0dca9456c55787cd5a5f11b388aa76586b4fcdf6.tar.gz llvm-0dca9456c55787cd5a5f11b388aa76586b4fcdf6.tar.bz2 llvm-0dca9456c55787cd5a5f11b388aa76586b4fcdf6.tar.xz | |
jalr should use t9 ($25) for indirect calls regardless of the relocation model
specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146229 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/Mips/MipsISelLowering.cpp | 12 | ||||
| -rw-r--r-- | test/CodeGen/Mips/indirectcall.ll | 8 |
2 files changed, 16 insertions, 4 deletions
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp index c888cfc4ca..a3dd45bd21 100644 --- a/lib/Target/Mips/MipsISelLowering.cpp +++ b/lib/Target/Mips/MipsISelLowering.cpp @@ -2338,7 +2338,7 @@ MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, // node so that legalize doesn't hack it. unsigned char OpFlag; bool IsPICCall = (IsN64 || IsPIC); // true if calls are translated to jalr $25 - bool LoadSymAddr = false; + bool GlobalOrExternal = false; SDValue CalleeLo; if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee)) { @@ -2355,7 +2355,7 @@ MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, getPointerTy(), 0, OpFlag); } - LoadSymAddr = true; + GlobalOrExternal = true; } else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) { if (IsN64 || (!IsO32 && IsPIC)) @@ -2366,14 +2366,14 @@ MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, OpFlag = MipsII::MO_GOT_CALL; Callee = DAG.getTargetExternalSymbol(S->getSymbol(), getPointerTy(), OpFlag); - LoadSymAddr = true; + GlobalOrExternal = true; } SDValue InFlag; // Create nodes that load address of callee and copy it to T9 if (IsPICCall) { - if (LoadSymAddr) { + if (GlobalOrExternal) { // Load callee address Callee = DAG.getNode(MipsISD::WrapperPIC, dl, getPointerTy(), Callee); SDValue LoadValue = DAG.getLoad(getPointerTy(), dl, DAG.getEntryNode(), @@ -2387,7 +2387,11 @@ MipsTargetLowering::LowerCall(SDValue InChain, SDValue Callee, } else Callee = LoadValue; } + } + // T9 should contain the address of the callee function if + // -reloction-model=pic or it is an indirect call. + if (IsPICCall || !GlobalOrExternal) { // copy to T9 unsigned T9Reg = IsN64 ? Mips::T9_64 : Mips::T9; Chain = DAG.getCopyToReg(Chain, dl, T9Reg, Callee, SDValue(0, 0)); diff --git a/test/CodeGen/Mips/indirectcall.ll b/test/CodeGen/Mips/indirectcall.ll new file mode 100644 index 0000000000..ac565d6466 --- /dev/null +++ b/test/CodeGen/Mips/indirectcall.ll @@ -0,0 +1,8 @@ +; RUN: llc < %s -march=mipsel -relocation-model=static | FileCheck %s + +define void @foo0(void (i32)* nocapture %f1) nounwind { +entry: +; CHECK: jalr $25 + tail call void %f1(i32 13) nounwind + ret void +} |