[llvm] r298179 - Make library calls sensitive to regparm module flag (Fixes PR3997).
Tom Stellard via llvm-commits
llvm-commits at lists.llvm.org
Tue May 16 13:01:03 PDT 2017
On 05/11/2017 07:09 PM, Chandler Carruth wrote:
> Hey Tom, I'd like to propose merging this into 4.0.1. I know it is both somewhat late and somewhat large, but Linux kernel developers are asking me for it to be included in a released version of LLVM and Clang to simplify things, and so if it isn't too high of risk, I'd like to float the idea of pulling it.
>
Hi Chandler,
It's large, but it's mostly just sed s/setCallee/setLibCallee/, so it's
pretty simple. The only problem I see is that the FastISel.h changes
are ABI breaking, so someone would need to rewrite the patch to avoid
this breakage (not sure how hard this is).
-Tom
> CC-ing both the reviewers but also some other interested parties since it's a bit higher risk than usual.
>
> -Chandler
>
> On Fri, Mar 17, 2017 at 5:56 PM Nirav Dave via llvm-commits <llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>> wrote:
>
> Author: niravd
> Date: Fri Mar 17 19:44:07 2017
> New Revision: 298179
>
> URL: http://llvm.org/viewvc/llvm-project?rev=298179&view=rev
> Log:
> Make library calls sensitive to regparm module flag (Fixes PR3997).
>
> Reviewers: mkuper, rnk
>
> Subscribers: mehdi_amini, jyknight, aemerson, llvm-commits, rengolin
>
> Differential Revision: https://reviews.llvm.org/D27050
>
> Added:
> llvm/trunk/test/CodeGen/X86/regparm.ll
> Modified:
> llvm/trunk/include/llvm/CodeGen/FastISel.h
> llvm/trunk/include/llvm/IR/Module.h
> llvm/trunk/include/llvm/Target/TargetLowering.h
> llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
> llvm/trunk/lib/IR/Module.cpp
> llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
> llvm/trunk/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp
> llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
> llvm/trunk/lib/Target/ARM/ARMSelectionDAGInfo.cpp
> llvm/trunk/lib/Target/AVR/AVRISelLowering.cpp
> llvm/trunk/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp
> llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
> llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
> llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
> llvm/trunk/lib/Target/X86/X86ISelLowering.h
> llvm/trunk/lib/Target/X86/X86SelectionDAGInfo.cpp
> llvm/trunk/lib/Target/XCore/XCoreISelLowering.cpp
> llvm/trunk/lib/Target/XCore/XCoreSelectionDAGInfo.cpp
>
> Modified: llvm/trunk/include/llvm/CodeGen/FastISel.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/FastISel.h?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/CodeGen/FastISel.h (original)
> +++ llvm/trunk/include/llvm/CodeGen/FastISel.h Fri Mar 17 19:44:07 2017
> @@ -41,32 +41,8 @@ class MachineConstantPool;
> /// quickly.
> class FastISel {
> public:
> - struct ArgListEntry {
> - Value *Val = nullptr;
> - Type *Ty = nullptr;
> - bool IsSExt : 1;
> - bool IsZExt : 1;
> - bool IsInReg : 1;
> - bool IsSRet : 1;
> - bool IsNest : 1;
> - bool IsByVal : 1;
> - bool IsInAlloca : 1;
> - bool IsReturned : 1;
> - bool IsSwiftSelf : 1;
> - bool IsSwiftError : 1;
> - uint16_t Alignment = 0;
> -
> - ArgListEntry()
> - : IsSExt(false), IsZExt(false), IsInReg(false), IsSRet(false),
> - IsNest(false), IsByVal(false), IsInAlloca(false), IsReturned(false),
> - IsSwiftSelf(false), IsSwiftError(false) {}
> -
> - /// \brief Set CallLoweringInfo attribute flags based on a call instruction
> - /// and called function attributes.
> - void setAttributes(ImmutableCallSite *CS, unsigned AttrIdx);
> - };
> - typedef std::vector<ArgListEntry> ArgListTy;
> -
> + typedef TargetLoweringBase::ArgListEntry ArgListEntry;
> + typedef TargetLoweringBase::ArgListTy ArgListTy;
> struct CallLoweringInfo {
> Type *RetTy = nullptr;
> bool RetSExt : 1;
>
> Modified: llvm/trunk/include/llvm/IR/Module.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/Module.h?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/IR/Module.h (original)
> +++ llvm/trunk/include/llvm/IR/Module.h Fri Mar 17 19:44:07 2017
> @@ -726,6 +726,10 @@ public:
> /// @name Utility functions for querying Debug information.
> /// @{
>
> + /// \brief Returns the Number of Register ParametersDwarf Version by checking
> + /// module flags.
> + unsigned getNumberRegisterParameters() const;
> +
> /// \brief Returns the Dwarf Version by checking module flags.
> unsigned getDwarfVersion() const;
>
>
> Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
> +++ llvm/trunk/include/llvm/Target/TargetLowering.h Fri Mar 17 19:44:07 2017
> @@ -25,13 +25,14 @@
>
> #include "llvm/ADT/ArrayRef.h"
> #include "llvm/ADT/DenseMap.h"
> -#include "llvm/ADT/SmallVector.h"
> #include "llvm/ADT/STLExtras.h"
> +#include "llvm/ADT/SmallVector.h"
> #include "llvm/ADT/StringRef.h"
> #include "llvm/CodeGen/DAGCombine.h"
> #include "llvm/CodeGen/ISDOpcodes.h"
> #include "llvm/CodeGen/MachineValueType.h"
> #include "llvm/CodeGen/RuntimeLibcalls.h"
> +#include "llvm/CodeGen/SelectionDAG.h"
> #include "llvm/CodeGen/SelectionDAGNodes.h"
> #include "llvm/CodeGen/ValueTypes.h"
> #include "llvm/IR/Attributes.h"
> @@ -2628,6 +2629,20 @@ public:
> return *this;
> }
>
> + // setCallee with target/module-specific attributes
> + CallLoweringInfo &setLibCallee(CallingConv::ID CC, Type *ResultType,
> + SDValue Target, ArgListTy &&ArgsList) {
> + RetTy = ResultType;
> + Callee = Target;
> + CallConv = CC;
> + NumFixedArgs = Args.size();
> + Args = std::move(ArgsList);
> +
> + DAG.getTargetLoweringInfo().markLibCallAttributes(
> + &(DAG.getMachineFunction()), CC, Args);
> + return *this;
> + }
> +
> CallLoweringInfo &setCallee(CallingConv::ID CC, Type *ResultType,
> SDValue Target, ArgListTy &&ArgsList) {
> RetTy = ResultType;
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/FastISel.cpp Fri Mar 17 19:44:07 2017
> @@ -119,21 +119,6 @@ STATISTIC(NumFastIselSuccessTarget, "Num
> "target-specific selector");
> STATISTIC(NumFastIselDead, "Number of dead insts removed on failure");
>
> -void FastISel::ArgListEntry::setAttributes(ImmutableCallSite *CS,
> - unsigned AttrIdx) {
> - IsSExt = CS->paramHasAttr(AttrIdx, Attribute::SExt);
> - IsZExt = CS->paramHasAttr(AttrIdx, Attribute::ZExt);
> - IsInReg = CS->paramHasAttr(AttrIdx, Attribute::InReg);
> - IsSRet = CS->paramHasAttr(AttrIdx, Attribute::StructRet);
> - IsNest = CS->paramHasAttr(AttrIdx, Attribute::Nest);
> - IsByVal = CS->paramHasAttr(AttrIdx, Attribute::ByVal);
> - IsInAlloca = CS->paramHasAttr(AttrIdx, Attribute::InAlloca);
> - IsReturned = CS->paramHasAttr(AttrIdx, Attribute::Returned);
> - IsSwiftSelf = CS->paramHasAttr(AttrIdx, Attribute::SwiftSelf);
> - IsSwiftError = CS->paramHasAttr(AttrIdx, Attribute::SwiftError);
> - Alignment = CS->getParamAlignment(AttrIdx);
> -}
> -
> /// Set the current block to which generated machine instructions will be
> /// appended, and clear the local CSE map.
> void FastISel::startNewBlock() {
> @@ -929,6 +914,7 @@ bool FastISel::lowerCallTo(const CallIns
> Entry.setAttributes(&CS, ArgI + 1);
> Args.push_back(Entry);
> }
> + TLI.markLibCallAttributes(MF, CS.getCallingConv(), Args);
>
> CallLoweringInfo CLI;
> CLI.setCallee(RetTy, FTy, Symbol, std::move(Args), CS, NumArgs);
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Fri Mar 17 19:44:07 2017
> @@ -1935,9 +1935,13 @@ SDValue SelectionDAGLegalize::ExpandLibC
> InChain = TCChain;
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(SDLoc(Node)).setChain(InChain)
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setTailCall(isTailCall).setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(SDLoc(Node))
> + .setChain(InChain)
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee,
> + std::move(Args))
> + .setTailCall(isTailCall)
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> @@ -1970,9 +1974,12 @@ SDValue SelectionDAGLegalize::ExpandLibC
> Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(DAG.getEntryNode())
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(dl)
> + .setChain(DAG.getEntryNode())
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee,
> + std::move(Args))
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue,SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> @@ -2004,9 +2011,12 @@ SelectionDAGLegalize::ExpandChainLibCall
> Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext());
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(SDLoc(Node)).setChain(InChain)
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(SDLoc(Node))
> + .setChain(InChain)
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee,
> + std::move(Args))
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> @@ -2099,9 +2109,12 @@ SelectionDAGLegalize::ExpandDivRemLibCal
>
> SDLoc dl(Node);
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(InChain)
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(dl)
> + .setChain(InChain)
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee,
> + std::move(Args))
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> @@ -2210,9 +2223,9 @@ SelectionDAGLegalize::ExpandSinCosLibCal
>
> SDLoc dl(Node);
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(InChain)
> - .setCallee(TLI.getLibcallCallingConv(LC),
> - Type::getVoidTy(*DAG.getContext()), Callee, std::move(Args));
> + CLI.setDebugLoc(dl).setChain(InChain).setLibCallee(
> + TLI.getLibcallCallingConv(LC), Type::getVoidTy(*DAG.getContext()), Callee,
> + std::move(Args));
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> @@ -3830,10 +3843,11 @@ void SelectionDAGLegalize::ConvertNodeTo
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Node->getOperand(0))
> - .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol("__sync_synchronize",
> - TLI.getPointerTy(DAG.getDataLayout())),
> - std::move(Args));
> + .setLibCallee(
> + CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol("__sync_synchronize",
> + TLI.getPointerTy(DAG.getDataLayout())),
> + std::move(Args));
>
> std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
>
> @@ -3870,10 +3884,10 @@ void SelectionDAGLegalize::ConvertNodeTo
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Node->getOperand(0))
> - .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol("abort",
> - TLI.getPointerTy(DAG.getDataLayout())),
> - std::move(Args));
> + .setLibCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol(
> + "abort", TLI.getPointerTy(DAG.getDataLayout())),
> + std::move(Args));
> std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
>
> Results.push_back(CallResult.second);
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp Fri Mar 17 19:44:07 2017
> @@ -2607,7 +2607,7 @@ void DAGTypeLegalizer::ExpandIntRes_XMUL
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Func, std::move(Args))
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Func, std::move(Args))
> .setSExtResult();
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp Fri Mar 17 19:44:07 2017
> @@ -1094,9 +1094,12 @@ DAGTypeLegalizer::ExpandChainLibCall(RTL
> Type *RetTy = Node->getValueType(0).getTypeForEVT(*DAG.getContext());
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(SDLoc(Node)).setChain(InChain)
> - .setCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(SDLoc(Node))
> + .setChain(InChain)
> + .setLibCallee(TLI.getLibcallCallingConv(LC), RetTy, Callee,
> + std::move(Args))
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue, SDValue> CallInfo = TLI.LowerCallTo(CLI);
>
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Fri Mar 17 19:44:07 2017
> @@ -5175,11 +5175,11 @@ SDValue SelectionDAG::getMemcpy(SDValue
> TargetLowering::CallLoweringInfo CLI(*this);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(TLI->getLibcallCallingConv(RTLIB::MEMCPY),
> - Dst.getValueType().getTypeForEVT(*getContext()),
> - getExternalSymbol(TLI->getLibcallName(RTLIB::MEMCPY),
> - TLI->getPointerTy(getDataLayout())),
> - std::move(Args))
> + .setLibCallee(TLI->getLibcallCallingConv(RTLIB::MEMCPY),
> + Dst.getValueType().getTypeForEVT(*getContext()),
> + getExternalSymbol(TLI->getLibcallName(RTLIB::MEMCPY),
> + TLI->getPointerTy(getDataLayout())),
> + std::move(Args))
> .setDiscardResult()
> .setTailCall(isTailCall);
>
> @@ -5236,11 +5236,11 @@ SDValue SelectionDAG::getMemmove(SDValue
> TargetLowering::CallLoweringInfo CLI(*this);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(TLI->getLibcallCallingConv(RTLIB::MEMMOVE),
> - Dst.getValueType().getTypeForEVT(*getContext()),
> - getExternalSymbol(TLI->getLibcallName(RTLIB::MEMMOVE),
> - TLI->getPointerTy(getDataLayout())),
> - std::move(Args))
> + .setLibCallee(TLI->getLibcallCallingConv(RTLIB::MEMMOVE),
> + Dst.getValueType().getTypeForEVT(*getContext()),
> + getExternalSymbol(TLI->getLibcallName(RTLIB::MEMMOVE),
> + TLI->getPointerTy(getDataLayout())),
> + std::move(Args))
> .setDiscardResult()
> .setTailCall(isTailCall);
>
> @@ -5298,11 +5298,11 @@ SDValue SelectionDAG::getMemset(SDValue
> TargetLowering::CallLoweringInfo CLI(*this);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(TLI->getLibcallCallingConv(RTLIB::MEMSET),
> - Dst.getValueType().getTypeForEVT(*getContext()),
> - getExternalSymbol(TLI->getLibcallName(RTLIB::MEMSET),
> - TLI->getPointerTy(getDataLayout())),
> - std::move(Args))
> + .setLibCallee(TLI->getLibcallCallingConv(RTLIB::MEMSET),
> + Dst.getValueType().getTypeForEVT(*getContext()),
> + getExternalSymbol(TLI->getLibcallName(RTLIB::MEMSET),
> + TLI->getPointerTy(getDataLayout())),
> + std::move(Args))
> .setDiscardResult()
> .setTailCall(isTailCall);
>
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Fri Mar 17 19:44:07 2017
> @@ -4912,7 +4912,7 @@ SelectionDAGBuilder::visitIntrinsicCall(
> report_fatal_error("Unsupported element size");
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(sdl).setChain(getRoot()).setCallee(
> + CLI.setDebugLoc(sdl).setChain(getRoot()).setLibCallee(
> TLI.getLibcallCallingConv(LibraryCall),
> Type::getVoidTy(*DAG.getContext()),
> DAG.getExternalSymbol(TLI.getLibcallName(LibraryCall),
> @@ -5536,7 +5536,7 @@ SelectionDAGBuilder::visitIntrinsicCall(
> TargetLowering::ArgListTy Args;
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(sdl).setChain(getRoot()).setCallee(
> + CLI.setDebugLoc(sdl).setChain(getRoot()).setLibCallee(
> CallingConv::C, I.getType(),
> DAG.getExternalSymbol(TrapFuncName.data(),
> TLI.getPointerTy(DAG.getDataLayout())),
>
> Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
> +++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -96,8 +96,8 @@ bool TargetLowering::parametersInCSRMatc
>
> /// \brief Set CallLoweringInfo attribute flags based on a call instruction
> /// and called function attributes.
> -void TargetLowering::ArgListEntry::setAttributes(ImmutableCallSite *CS,
> - unsigned AttrIdx) {
> +void TargetLoweringBase::ArgListEntry::setAttributes(ImmutableCallSite *CS,
> + unsigned AttrIdx) {
> IsSExt = CS->paramHasAttr(AttrIdx, Attribute::SExt);
> IsZExt = CS->paramHasAttr(AttrIdx, Attribute::ZExt);
> IsInReg = CS->paramHasAttr(AttrIdx, Attribute::InReg);
> @@ -138,10 +138,13 @@ TargetLowering::makeLibCall(SelectionDAG
> Type *RetTy = RetVT.getTypeForEVT(*DAG.getContext());
> TargetLowering::CallLoweringInfo CLI(DAG);
> bool signExtend = shouldSignExtendTypeInLibCall(RetVT, isSigned);
> - CLI.setDebugLoc(dl).setChain(DAG.getEntryNode())
> - .setCallee(getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> - .setNoReturn(doesNotReturn).setDiscardResult(!isReturnValueUsed)
> - .setSExtResult(signExtend).setZExtResult(!signExtend);
> + CLI.setDebugLoc(dl)
> + .setChain(DAG.getEntryNode())
> + .setLibCallee(getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> + .setNoReturn(doesNotReturn)
> + .setDiscardResult(!isReturnValueUsed)
> + .setSExtResult(signExtend)
> + .setZExtResult(!signExtend);
> return LowerCallTo(CLI);
> }
>
> @@ -3853,7 +3856,7 @@ SDValue TargetLowering::LowerToTLSEmulat
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl).setChain(DAG.getEntryNode());
> - CLI.setCallee(CallingConv::C, VoidPtrType, EmuTlsGetAddr, std::move(Args));
> + CLI.setLibCallee(CallingConv::C, VoidPtrType, EmuTlsGetAddr, std::move(Args));
> std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
>
> // TLSADDR will be codegen'ed as call. Inform MFI that function has calls.
>
> Modified: llvm/trunk/lib/IR/Module.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/IR/Module.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/IR/Module.cpp (original)
> +++ llvm/trunk/lib/IR/Module.cpp Fri Mar 17 19:44:07 2017
> @@ -465,6 +465,14 @@ void Module::dropAllReferences() {
> GIF.dropAllReferences();
> }
>
> +unsigned Module::getNumberRegisterParameters() const {
> + auto *Val =
> + cast_or_null<ConstantAsMetadata>(getModuleFlag("NumRegisterParameters"));
> + if (!Val)
> + return 0;
> + return cast<ConstantInt>(Val->getValue())->getZExtValue();
> +}
> +
> unsigned Module::getDwarfVersion() const {
> auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("Dwarf Version"));
> if (!Val)
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64ISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -2123,8 +2123,9 @@ SDValue AArch64TargetLowering::LowerFSIN
>
> StructType *RetTy = StructType::get(ArgTy, ArgTy, nullptr);
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(DAG.getEntryNode())
> - .setCallee(CallingConv::Fast, RetTy, Callee, std::move(Args));
> + CLI.setDebugLoc(dl)
> + .setChain(DAG.getEntryNode())
> + .setLibCallee(CallingConv::Fast, RetTy, Callee, std::move(Args));
>
> std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
> return CallResult.first;
>
> Modified: llvm/trunk/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp (original)
> +++ llvm/trunk/lib/Target/AArch64/AArch64SelectionDAGInfo.cpp Fri Mar 17 19:44:07 2017
> @@ -44,8 +44,9 @@ SDValue AArch64SelectionDAGInfo::EmitTar
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol(bzeroEntry, IntPtr), std::move(Args))
> + .setLibCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol(bzeroEntry, IntPtr),
> + std::move(Args))
> .setDiscardResult();
> std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
> return CallResult.second;
>
> Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -2873,7 +2873,7 @@ ARMTargetLowering::LowerToTLSGeneralDyna
>
> // FIXME: is there useful debug info available here?
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(Chain).setCallee(
> + CLI.setDebugLoc(dl).setChain(Chain).setLibCallee(
> CallingConv::C, Type::getInt32Ty(*DAG.getContext()),
> DAG.getExternalSymbol("__tls_get_addr", PtrVT), std::move(Args));
>
>
> Modified: llvm/trunk/lib/Target/ARM/ARMSelectionDAGInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMSelectionDAGInfo.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/ARM/ARMSelectionDAGInfo.cpp (original)
> +++ llvm/trunk/lib/Target/ARM/ARMSelectionDAGInfo.cpp Fri Mar 17 19:44:07 2017
> @@ -114,7 +114,7 @@ SDValue ARMSelectionDAGInfo::EmitSpecial
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(
> + .setLibCallee(
> TLI->getLibcallCallingConv(LC), Type::getVoidTy(*DAG.getContext()),
> DAG.getExternalSymbol(FunctionNames[AEABILibcall][AlignVariant],
> TLI->getPointerTy(DAG.getDataLayout())),
>
> Modified: llvm/trunk/lib/Target/AVR/AVRISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AVR/AVRISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/AVR/AVRISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/AVR/AVRISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -356,7 +356,7 @@ SDValue AVRTargetLowering::LowerDivRem(S
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(InChain)
> - .setCallee(getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> + .setLibCallee(getLibcallCallingConv(LC), RetTy, Callee, std::move(Args))
> .setInRegister()
> .setSExtResult(isSigned)
> .setZExtResult(!isSigned);
> @@ -1983,4 +1983,3 @@ unsigned AVRTargetLowering::getRegisterB
> }
>
> } // end of namespace llvm
> -
>
> Modified: llvm/trunk/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp (original)
> +++ llvm/trunk/lib/Target/Hexagon/HexagonSelectionDAGInfo.cpp Fri Mar 17 19:44:07 2017
> @@ -51,7 +51,7 @@ SDValue HexagonSelectionDAGInfo::EmitTar
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(
> + .setLibCallee(
> TLI.getLibcallCallingConv(RTLIB::MEMCPY),
> Type::getVoidTy(*DAG.getContext()),
> DAG.getTargetExternalSymbol(
>
> Modified: llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/Mips/MipsISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -1922,8 +1922,9 @@ lowerGlobalTLSAddress(SDValue Op, Select
> Args.push_back(Entry);
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(DL).setChain(DAG.getEntryNode())
> - .setCallee(CallingConv::C, PtrTy, TlsGetAddr, std::move(Args));
> + CLI.setDebugLoc(DL)
> + .setChain(DAG.getEntryNode())
> + .setLibCallee(CallingConv::C, PtrTy, TlsGetAddr, std::move(Args));
> std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
>
> SDValue Ret = CallResult.first;
>
> Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -2647,10 +2647,9 @@ SDValue PPCTargetLowering::LowerINIT_TRA
>
> // Lower to a call to __trampoline_setup(Trmp, TrampSize, FPtr, ctx_reg)
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(Chain)
> - .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol("__trampoline_setup", PtrVT),
> - std::move(Args));
> + CLI.setDebugLoc(dl).setChain(Chain).setLibCallee(
> + CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol("__trampoline_setup", PtrVT), std::move(Args));
>
> std::pair<SDValue, SDValue> CallResult = LowerCallTo(CLI);
> return CallResult.second;
>
> Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -53,6 +53,7 @@
> #include "llvm/Support/Debug.h"
> #include "llvm/Support/ErrorHandling.h"
> #include "llvm/Support/MathExtras.h"
> +#include "llvm/Target/TargetLowering.h"
> #include "llvm/Target/TargetOptions.h"
> #include <algorithm>
> #include <bitset>
> @@ -1961,6 +1962,34 @@ bool X86TargetLowering::useSoftFloat() c
> return Subtarget.useSoftFloat();
> }
>
> +void X86TargetLowering::markLibCallAttributes(MachineFunction *MF, unsigned CC,
> + ArgListTy &Args) const {
> +
> + // Only relabel X86-32 for C / Stdcall CCs.
> + if (static_cast<const X86Subtarget &>(MF->getSubtarget()).is64Bit())
> + return;
> + if (CC != CallingConv::C && CC != CallingConv::X86_StdCall)
> + return;
> + unsigned ParamRegs = 0;
> + if (auto *M = MF->getFunction()->getParent())
> + ParamRegs = M->getNumberRegisterParameters();
> +
> + // Mark the first N int arguments as having reg
> + for (unsigned Idx = 0; Idx < Args.size(); Idx++) {
> + Type *T = Args[Idx].Ty;
> + if (T->isPointerTy() || T->isIntegerTy())
> + if (MF->getDataLayout().getTypeAllocSize(T) <= 8) {
> + unsigned numRegs = 1;
> + if (MF->getDataLayout().getTypeAllocSize(T) > 4)
> + numRegs = 2;
> + if (ParamRegs < numRegs)
> + return;
> + ParamRegs -= numRegs;
> + Args[Idx].IsInReg = true;
> + }
> + }
> +}
> +
> const MCExpr *
> X86TargetLowering::LowerCustomJumpTableEntry(const MachineJumpTableInfo *MJTI,
> const MachineBasicBlock *MBB,
> @@ -21517,11 +21546,15 @@ SDValue X86TargetLowering::LowerWin64_i1
> getPointerTy(DAG.getDataLayout()));
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(InChain)
> - .setCallee(getLibcallCallingConv(LC),
> - static_cast<EVT>(MVT::v2i64).getTypeForEVT(*DAG.getContext()),
> - Callee, std::move(Args))
> - .setInRegister().setSExtResult(isSigned).setZExtResult(!isSigned);
> + CLI.setDebugLoc(dl)
> + .setChain(InChain)
> + .setLibCallee(
> + getLibcallCallingConv(LC),
> + static_cast<EVT>(MVT::v2i64).getTypeForEVT(*DAG.getContext()), Callee,
> + std::move(Args))
> + .setInRegister()
> + .setSExtResult(isSigned)
> + .setZExtResult(!isSigned);
>
> std::pair<SDValue, SDValue> CallInfo = LowerCallTo(CLI);
> return DAG.getBitcast(VT, CallInfo.first);
> @@ -23245,8 +23278,9 @@ static SDValue LowerFSINCOS(SDValue Op,
> : (Type*)VectorType::get(ArgTy, 4);
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(dl).setChain(DAG.getEntryNode())
> - .setCallee(CallingConv::C, RetTy, Callee, std::move(Args));
> + CLI.setDebugLoc(dl)
> + .setChain(DAG.getEntryNode())
> + .setLibCallee(CallingConv::C, RetTy, Callee, std::move(Args));
>
> std::pair<SDValue, SDValue> CallResult = TLI.LowerCallTo(CLI);
>
>
> Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.h?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86ISelLowering.h (original)
> +++ llvm/trunk/lib/Target/X86/X86ISelLowering.h Fri Mar 17 19:44:07 2017
> @@ -688,6 +688,9 @@ namespace llvm {
> unsigned getJumpTableEncoding() const override;
> bool useSoftFloat() const override;
>
> + void markLibCallAttributes(MachineFunction *MF, unsigned CC,
> + ArgListTy &Args) const override;
> +
> MVT getScalarShiftAmountTy(const DataLayout &, EVT) const override {
> return MVT::i8;
> }
>
> Modified: llvm/trunk/lib/Target/X86/X86SelectionDAGInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86SelectionDAGInfo.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/X86/X86SelectionDAGInfo.cpp (original)
> +++ llvm/trunk/lib/Target/X86/X86SelectionDAGInfo.cpp Fri Mar 17 19:44:07 2017
> @@ -87,8 +87,9 @@ SDValue X86SelectionDAGInfo::EmitTargetC
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol(bzeroEntry, IntPtr), std::move(Args))
> + .setLibCallee(CallingConv::C, Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol(bzeroEntry, IntPtr),
> + std::move(Args))
> .setDiscardResult();
>
> std::pair<SDValue,SDValue> CallResult = TLI.LowerCallTo(CLI);
>
> Modified: llvm/trunk/lib/Target/XCore/XCoreISelLowering.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreISelLowering.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/XCore/XCoreISelLowering.cpp (original)
> +++ llvm/trunk/lib/Target/XCore/XCoreISelLowering.cpp Fri Mar 17 19:44:07 2017
> @@ -483,7 +483,7 @@ LowerLOAD(SDValue Op, SelectionDAG &DAG)
> Args.push_back(Entry);
>
> TargetLowering::CallLoweringInfo CLI(DAG);
> - CLI.setDebugLoc(DL).setChain(Chain).setCallee(
> + CLI.setDebugLoc(DL).setChain(Chain).setLibCallee(
> CallingConv::C, IntPtrTy,
> DAG.getExternalSymbol("__misaligned_load",
> getPointerTy(DAG.getDataLayout())),
>
> Modified: llvm/trunk/lib/Target/XCore/XCoreSelectionDAGInfo.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/XCore/XCoreSelectionDAGInfo.cpp?rev=298179&r1=298178&r2=298179&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/XCore/XCoreSelectionDAGInfo.cpp (original)
> +++ llvm/trunk/lib/Target/XCore/XCoreSelectionDAGInfo.cpp Fri Mar 17 19:44:07 2017
> @@ -35,11 +35,11 @@ SDValue XCoreSelectionDAGInfo::EmitTarge
> TargetLowering::CallLoweringInfo CLI(DAG);
> CLI.setDebugLoc(dl)
> .setChain(Chain)
> - .setCallee(TLI.getLibcallCallingConv(RTLIB::MEMCPY),
> - Type::getVoidTy(*DAG.getContext()),
> - DAG.getExternalSymbol("__memcpy_4",
> - TLI.getPointerTy(DAG.getDataLayout())),
> - std::move(Args))
> + .setLibCallee(TLI.getLibcallCallingConv(RTLIB::MEMCPY),
> + Type::getVoidTy(*DAG.getContext()),
> + DAG.getExternalSymbol(
> + "__memcpy_4", TLI.getPointerTy(DAG.getDataLayout())),
> + std::move(Args))
> .setDiscardResult();
>
> std::pair<SDValue,SDValue> CallResult = TLI.LowerCallTo(CLI);
>
> Added: llvm/trunk/test/CodeGen/X86/regparm.ll
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/regparm.ll?rev=298179&view=auto
> ==============================================================================
> --- llvm/trunk/test/CodeGen/X86/regparm.ll (added)
> +++ llvm/trunk/test/CodeGen/X86/regparm.ll Fri Mar 17 19:44:07 2017
> @@ -0,0 +1,48 @@
> +; RUN: llc %s -mtriple=i386-pc-linux -o - | FileCheck -check-prefix=CHECK %s
> +; RUN: llc %s -mtriple=i386-pc-win32 -o - | FileCheck -check-prefix=WIN %s
> +; RUN: llc %s -mtriple=i386-pc-linux -fast-isel -o - | FileCheck -check-prefix=FAST %s
> +; RUN: llc %s -mtriple=i386-pc-win32 -fast-isel -o - | FileCheck -check-prefix=FASTWIN %s
> +
> +
> +
> +target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128"
> +target triple = "i386-unknown-linux-gnu"
> +
> +; Function Attrs: argmemonly nounwind
> +declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture writeonly, i8* nocapture readonly, i32, i32, i1) #1
> +
> +define void @use_memset(i8* inreg nocapture %dest, i8 inreg %c, i32 inreg %n) local_unnamed_addr #0 {
> +entry:
> +;CHECK-LABEL: @use_memset
> +;CHECK-NOT: push
> +;CHECK: jmp memset
> +;CHECK-NOT: retl
> +;WIN-LABEL: @use_memset
> +;WIN-NOT: push
> +;WIN: jmp _memset
> +;WIN-NOT: retl
> +;FAST-LABEL: @use_memset
> +;FAST: subl $12, %esp
> +;FAST-NEXT: movzbl %dl, %edx
> +;FAST-NEXT: calll memset
> +;FAST-NEXT: addl $12, %esp
> +;FASTWIN-LABEL: @use_memset
> +;FASTWIN: movzbl %dl, %edx
> +;FASTWIN-NEXT: calll _memset
> +;FASTWIN-NEXT: retl
> + tail call void @llvm.memset.p0i8.i32(i8* %dest, i8 %c, i32 %n, i32 1, i1 false)
> + ret void
> +}
> +
> +; Function Attrs: argmemonly nounwind
> +declare void @llvm.memset.p0i8.i32(i8* nocapture writeonly, i8, i32, i32, i1) #1
> +
> +
> +attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
> +attributes #1 = { argmemonly nounwind }
> +
> +!llvm.module.flags = !{!0}
> +!llvm.ident = !{!1}
> +
> +!0 = !{i32 1, !"NumRegisterParameters", i32 3}
> +!1 = !{!"clang version 4.0.0 (trunk 288025) (llvm/trunk 288033)"}
>
>
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at lists.llvm.org <mailto:llvm-commits at lists.llvm.org>
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
>
More information about the llvm-commits
mailing list