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<div style="direction: ltr;font-family: Tahoma;color: #000000;font-size: 10pt;">Here is the update patch & extended test case for ordering of InVals<br>
<br>
robert<br>
<br>
<div style="font-family: Times New Roman; color: #000000; font-size: 16px">
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<div style="direction: ltr;" id="divRpF211058"><font color="#000000" face="Tahoma" size="2"><b>From:</b> Richard Osborne<br>
<b>Sent:</b> 25 July 2013 22:21<br>
<b>To:</b> Robert Lytton<br>
<b>Cc:</b> llvm-commits@cs.uiuc.edu<br>
<b>Subject:</b> Re: xcore: handling of byval args in callee<br>
</font><br>
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<div>
<div>Hi Robert,</div>
<div><br>
</div>
<div>Sorry for not getting around to reviewing this sooner, comments inline. Would you be able to supply an updated patch?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Richard </div>
<br>
<div>
<div>On 19 Jul 2013, at 15:07, Robert Lytton <<a href="mailto:robert@xmos.com" target="_blank">robert@xmos.com</a>> wrote:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<div style="font-family:Helvetica; font-size:medium; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:normal; orphans:2; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px">
<div style="direction:ltr; font-family:Tahoma; font-size:10pt">Hi Richard,<br>
<br>
Here is a patch for handling byval arguments for the xcore ABI.<br>
<br>
robert<br>
<br>
</div>
<span><patch></span></div>
</blockquote>
</div>
<div><br>
<div style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"><br>
</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"></div>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo">diff --git a/lib/Target/XCore/XCoreISelLowering.cpp b/lib/Target/XCore/XCoreISelLowering.cpp</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">index 5f3d935..422fef3</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">--- a/lib/Target/XCore/XCoreISelLowering.cpp</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+++ b/lib/Target/XCore/XCoreISelLowering.cpp</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1031,6 +1031,8 @@ XCoreTargetLowering::LowerCallResult(SDValue Chain, SDValue InFlag,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // Formal Arguments Calling Convention Implementation</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> //===----------------------------------------------------------------------===//</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo">+struct ByValPair{SDValue SDV; ISD::ArgFlagsTy Flags;};</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
</blockquote>
<div><br>
</div>
<div>Local types should be placed in an anonymous namespace.</div>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"><br>
</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> /// XCore formal arguments implementation</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> SDValue</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> XCoreTargetLowering::LowerFormalArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1080,9 +1082,20 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo"> unsigned LRSaveSize = StackSlotSize;</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // all getMemcpys must follow getCopyFromReg to prevent clobbering</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 1. CopyFromReg (and load) arg & vararg registers</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 2. chain CopyFromReg nodes into a TokenFactor</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 3. Memcpy any 'byVal' args</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 4, chain all the mem ops nodes into a TokenFactor</div>
</blockquote>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SmallVector<SDValue, 4> RegNode;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SmallVector<ByValPair, 4> BVData;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SmallVector<SDValue, 4> MemOps;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 1a. CopyFromReg (and load) arg registers</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo"> CCValAssign &VA = ArgLocs[i];</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ ISD::ArgFlagsTy Flags = Ins[i].Flags;</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo"> if (VA.isRegLoc()) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // Arguments passed in registers</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1099,7 +1112,15 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> case MVT::i32:</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> unsigned VReg = RegInfo.createVirtualRegister(&XCore::GRRegsRegClass);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> RegInfo.addLiveIn(VA.getLocReg(), VReg);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- InVals.push_back(DAG.getCopyFromReg(Chain, dl, VReg, RegVT));</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SDValue CFRN = DAG.getCopyFromReg(Chain, dl, VReg, RegVT);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ RegNode.push_back(CFRN.getValue(CFRN->getNumValues()-1));</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ if (Flags.isByVal() && Flags.getByValSize()) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // delay creating copy of byval argument & adding result to InVals</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ const ByValPair BVD = {CFRN,Flags};</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ BVData.push_back(BVD);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ } else {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ InVals.push_back(CFRN);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ }</div>
</blockquote>
<div><br>
</div>
This doesn't seem right. If I have a function such as void f(struct foo a, int b) then this will push the copyFromReg for b into InVals before it inserting the value for the byval structure into InVals, leaving InVals in the wrong order.</div>
<div>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> } else {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // sanity check</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1119,12 +1140,20 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // Create the SelectionDAG nodes corresponding to a load</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> //from this parameter</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> SDValue FIN = DAG.getFrameIndex(FI, MVT::i32);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- InVals.push_back(DAG.getLoad(VA.getLocVT(), dl, Chain, FIN,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- MachinePointerInfo::getFixedStack(FI),</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- false, false, false, 0));</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SDValue GLN = DAG.getLoad(VA.getLocVT(), dl, Chain, FIN,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ MachinePointerInfo::getFixedStack(FI),</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ false, false, false, 0);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ if (Flags.isByVal() && Flags.getByValSize()){</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // delay creating copy of byval argument & adding result to InVals</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ const ByValPair BVD = {GLN,Flags};</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ BVData.push_back(BVD);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ } else {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ InVals.push_back(GLN);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ }</div>
</blockquote>
You could avoid duplicating this code by moving it after the if / else.<br>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 1b. CopyFromReg vararg registers</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> if (isVarArg) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> /* Argument registers */</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> static const uint16_t ArgRegs[] = {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1134,7 +1163,6 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> unsigned FirstVAReg = CCInfo.getFirstUnallocated(ArgRegs,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> array_lengthof(ArgRegs));</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> if (FirstVAReg < array_lengthof(ArgRegs)) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- SmallVector<SDValue, 4> MemOps;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> int offset = 0;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // Save remaining registers, storing higher register numbers at a higher</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // address</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1150,14 +1178,12 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> unsigned VReg = RegInfo.createVirtualRegister(&XCore::GRRegsRegClass);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> RegInfo.addLiveIn(ArgRegs[i], VReg);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> SDValue Val = DAG.getCopyFromReg(Chain, dl, VReg, MVT::i32);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ RegNode.push_back(Val.getValue(Val->getNumValues()-1));</div>
</blockquote>
LLVM Style is to have spaces around '-', <br>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo"> // Move argument from virt reg -> stack</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> SDValue Store = DAG.getStore(Val.getValue(1), dl, Val, FIN,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> MachinePointerInfo(), false, false, 0);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> MemOps.push_back(Store);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- if (!MemOps.empty())</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">- &MemOps[0], MemOps.size());</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> } else {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> // This will point to the next argument passed via stack.</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> XFI->setVarArgsFrameIndex(</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -1166,6 +1192,39 @@ XCoreTargetLowering::LowerCCCArguments(SDValue Chain,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 2. chain CopyFromReg nodes into a TokenFactor</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ if (!RegNode.empty())</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ &RegNode[0], RegNode.size());</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 3. Memcpy any 'byVal' args</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ if (!BVData.empty()) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // aggregates passed "byVal" need to be copied by the callee</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // and a pointer to the copy used by the callee instead of</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // the original pointer (which is now in 'BVData.SDV')</div>
</blockquote>
Comments should be sentences with proper capitalisation and punctuation, see <a href="http://llvm.org/docs/CodingStandards.html#commenting" target="_blank">http://llvm.org/docs/CodingStandards.html#commenting</a></div>
<div><br>
</div>
<div><br>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo">+ for (SmallVectorImpl<ByValPair>::const_iterator</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ BVDI = BVData.begin(), BVDE = BVData.end(); BVDI != BVDE; ++BVDI) {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ unsigned Size = BVDI->Flags.getByValSize();</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ unsigned Align = BVDI->Flags.getByValAlign();</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // Create a new object on the stack and copy the pointee into it.</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ int FI = MFI->CreateStackObject(Size, Align, false, false);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ SDValue FIN = DAG.getFrameIndex(FI, MVT::i32);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ InVals.push_back(FIN);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ MemOps.push_back(DAG.getMemcpy(Chain, dl, FIN, BVDI->SDV,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ DAG.getConstant(Size, MVT::i32),</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ Align, false, false,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ MachinePointerInfo(),</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ MachinePointerInfo()));</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ // 4, chain all the mem ops nodes into a TokenFactor</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ if (!MemOps.empty()){</div>
</blockquote>
Should be a space between ')' and '{'<br>
<blockquote type="cite">
<div style="margin:0px; font-size:11px; font-family:Menlo">+ MemOps.push_back(Chain);</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ Chain = DAG.getNode(ISD::TokenFactor, dl, MVT::Other,</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ &MemOps[0], MemOps.size());</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> return Chain;</div>
<div style="margin:0px; font-size:11px; font-family:Menlo"> }</div>
<p style="margin:0px; font-size:11px; font-family:Menlo; min-height:13px"> <br class="webkit-block-placeholder">
</p>
<div style="margin:0px; font-size:11px; font-family:Menlo">diff --git a/test/CodeGen/XCore/byVal.ll b/test/CodeGen/XCore/byVal.ll</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">index 0000000..18af006</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">--- /dev/null</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+++ b/test/CodeGen/XCore/byVal.ll</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">@@ -0,0 +1,57 @@</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; RUN: llc < %s -march=xcore | FileCheck %s</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK-LABEL: f0Test</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: entsp 1</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: bl f0</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: retsp 1</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+%struct.st0 = type { [0 x i32] }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+declare void @f0(%struct.st0*) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+define void @f0Test(%struct.st0* byval %s0) nounwind {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+entry:</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ call void @f0(%struct.st0* %s0) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ ret void</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+}</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK-LABEL: f1Test</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: entsp 13</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r4, sp[12]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r5, sp[11]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: mov r4, r0</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldaw r5, sp[1]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldc r2, 40</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: mov r0, r5</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: bl memcpy</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: mov r0, r5</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: bl f1</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: mov r0, r4</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldw r5, sp[11]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldw r4, sp[12]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: retsp 13</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+%struct.st1 = type { [10 x i32] }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+declare void @f1(%struct.st1*) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+define i32 @f1Test(i32 %i, %struct.st1* byval %s1) nounwind {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+entry:</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ call void @f1(%struct.st1* %s1) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ ret i32 %i</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+}</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK-LABEL: f2Test</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: extsp 5</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw lr, sp[1]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r1, sp[3]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r2, sp[4]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r3, sp[5]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldw r0, r0[0]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: stw r0, sp[2]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldaw r0, sp[2]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: bl f2</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldw lr, sp[1]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: ldaw sp, sp[5]</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+; CHECK: retsp 0</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+%struct.st2 = type { i32 }</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+declare void @f2(%struct.st2*) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+define void @f2Test(%struct.st2* byval %s2, ...) nounwind {</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+entry:</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ call void @f2(%struct.st2* %s2) nounwind</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+ ret void</div>
<div style="margin:0px; font-size:11px; font-family:Menlo">+}</div>
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