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https://github.com/c64scene-ar/llvm-6502.git
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as it caused miscompilations and assertion failures (PR23768, http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20150601/280380.html). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239169 91177308-0d34-0410-b5e6-96231b3b80d8
644 lines
26 KiB
C++
644 lines
26 KiB
C++
//===-- ARMISelLowering.h - ARM DAG Lowering Interface ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the interfaces that ARM uses to lower LLVM code into a
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// selection DAG.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_ARM_ARMISELLOWERING_H
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#define LLVM_LIB_TARGET_ARM_ARMISELLOWERING_H
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#include "MCTargetDesc/ARMBaseInfo.h"
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#include "llvm/CodeGen/CallingConvLower.h"
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#include "llvm/CodeGen/SelectionDAG.h"
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#include "llvm/Target/TargetLowering.h"
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#include <vector>
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namespace llvm {
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class ARMConstantPoolValue;
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class ARMSubtarget;
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namespace ARMISD {
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// ARM Specific DAG Nodes
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enum NodeType : unsigned {
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// Start the numbering where the builtin ops and target ops leave off.
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FIRST_NUMBER = ISD::BUILTIN_OP_END,
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Wrapper, // Wrapper - A wrapper node for TargetConstantPool,
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// TargetExternalSymbol, and TargetGlobalAddress.
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WrapperPIC, // WrapperPIC - A wrapper node for TargetGlobalAddress in
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// PIC mode.
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WrapperJT, // WrapperJT - A wrapper node for TargetJumpTable
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// Add pseudo op to model memcpy for struct byval.
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COPY_STRUCT_BYVAL,
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CALL, // Function call.
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CALL_PRED, // Function call that's predicable.
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CALL_NOLINK, // Function call with branch not branch-and-link.
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tCALL, // Thumb function call.
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BRCOND, // Conditional branch.
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BR_JT, // Jumptable branch.
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BR2_JT, // Jumptable branch (2 level - jumptable entry is a jump).
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RET_FLAG, // Return with a flag operand.
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INTRET_FLAG, // Interrupt return with an LR-offset and a flag operand.
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PIC_ADD, // Add with a PC operand and a PIC label.
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CMP, // ARM compare instructions.
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CMN, // ARM CMN instructions.
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CMPZ, // ARM compare that sets only Z flag.
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CMPFP, // ARM VFP compare instruction, sets FPSCR.
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CMPFPw0, // ARM VFP compare against zero instruction, sets FPSCR.
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FMSTAT, // ARM fmstat instruction.
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CMOV, // ARM conditional move instructions.
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BCC_i64,
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RBIT, // ARM bitreverse instruction
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SRL_FLAG, // V,Flag = srl_flag X -> srl X, 1 + save carry out.
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SRA_FLAG, // V,Flag = sra_flag X -> sra X, 1 + save carry out.
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RRX, // V = RRX X, Flag -> srl X, 1 + shift in carry flag.
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ADDC, // Add with carry
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ADDE, // Add using carry
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SUBC, // Sub with carry
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SUBE, // Sub using carry
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VMOVRRD, // double to two gprs.
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VMOVDRR, // Two gprs to double.
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EH_SJLJ_SETJMP, // SjLj exception handling setjmp.
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EH_SJLJ_LONGJMP, // SjLj exception handling longjmp.
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TC_RETURN, // Tail call return pseudo.
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THREAD_POINTER,
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DYN_ALLOC, // Dynamic allocation on the stack.
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MEMBARRIER_MCR, // Memory barrier (MCR)
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PRELOAD, // Preload
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WIN__CHKSTK, // Windows' __chkstk call to do stack probing.
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VCEQ, // Vector compare equal.
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VCEQZ, // Vector compare equal to zero.
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VCGE, // Vector compare greater than or equal.
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VCGEZ, // Vector compare greater than or equal to zero.
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VCLEZ, // Vector compare less than or equal to zero.
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VCGEU, // Vector compare unsigned greater than or equal.
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VCGT, // Vector compare greater than.
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VCGTZ, // Vector compare greater than zero.
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VCLTZ, // Vector compare less than zero.
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VCGTU, // Vector compare unsigned greater than.
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VTST, // Vector test bits.
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// Vector shift by immediate:
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VSHL, // ...left
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VSHRs, // ...right (signed)
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VSHRu, // ...right (unsigned)
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// Vector rounding shift by immediate:
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VRSHRs, // ...right (signed)
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VRSHRu, // ...right (unsigned)
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VRSHRN, // ...right narrow
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// Vector saturating shift by immediate:
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VQSHLs, // ...left (signed)
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VQSHLu, // ...left (unsigned)
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VQSHLsu, // ...left (signed to unsigned)
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VQSHRNs, // ...right narrow (signed)
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VQSHRNu, // ...right narrow (unsigned)
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VQSHRNsu, // ...right narrow (signed to unsigned)
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// Vector saturating rounding shift by immediate:
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VQRSHRNs, // ...right narrow (signed)
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VQRSHRNu, // ...right narrow (unsigned)
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VQRSHRNsu, // ...right narrow (signed to unsigned)
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// Vector shift and insert:
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VSLI, // ...left
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VSRI, // ...right
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// Vector get lane (VMOV scalar to ARM core register)
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// (These are used for 8- and 16-bit element types only.)
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VGETLANEu, // zero-extend vector extract element
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VGETLANEs, // sign-extend vector extract element
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// Vector move immediate and move negated immediate:
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VMOVIMM,
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VMVNIMM,
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// Vector move f32 immediate:
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VMOVFPIMM,
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// Vector duplicate:
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VDUP,
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VDUPLANE,
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// Vector shuffles:
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VEXT, // extract
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VREV64, // reverse elements within 64-bit doublewords
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VREV32, // reverse elements within 32-bit words
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VREV16, // reverse elements within 16-bit halfwords
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VZIP, // zip (interleave)
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VUZP, // unzip (deinterleave)
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VTRN, // transpose
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VTBL1, // 1-register shuffle with mask
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VTBL2, // 2-register shuffle with mask
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// Vector multiply long:
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VMULLs, // ...signed
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VMULLu, // ...unsigned
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UMLAL, // 64bit Unsigned Accumulate Multiply
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SMLAL, // 64bit Signed Accumulate Multiply
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// Operands of the standard BUILD_VECTOR node are not legalized, which
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// is fine if BUILD_VECTORs are always lowered to shuffles or other
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// operations, but for ARM some BUILD_VECTORs are legal as-is and their
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// operands need to be legalized. Define an ARM-specific version of
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// BUILD_VECTOR for this purpose.
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BUILD_VECTOR,
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// Floating-point max and min:
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FMAX,
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FMIN,
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VMAXNM,
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VMINNM,
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// Bit-field insert
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BFI,
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// Vector OR with immediate
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VORRIMM,
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// Vector AND with NOT of immediate
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VBICIMM,
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// Vector bitwise select
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VBSL,
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// Vector load N-element structure to all lanes:
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VLD2DUP = ISD::FIRST_TARGET_MEMORY_OPCODE,
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VLD3DUP,
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VLD4DUP,
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// NEON loads with post-increment base updates:
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VLD1_UPD,
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VLD2_UPD,
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VLD3_UPD,
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VLD4_UPD,
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VLD2LN_UPD,
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VLD3LN_UPD,
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VLD4LN_UPD,
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VLD2DUP_UPD,
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VLD3DUP_UPD,
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VLD4DUP_UPD,
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// NEON stores with post-increment base updates:
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VST1_UPD,
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VST2_UPD,
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VST3_UPD,
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VST4_UPD,
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VST2LN_UPD,
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VST3LN_UPD,
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VST4LN_UPD
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};
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}
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/// Define some predicates that are used for node matching.
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namespace ARM {
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bool isBitFieldInvertedMask(unsigned v);
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}
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//===--------------------------------------------------------------------===//
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// ARMTargetLowering - ARM Implementation of the TargetLowering interface
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class ARMTargetLowering : public TargetLowering {
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public:
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explicit ARMTargetLowering(const TargetMachine &TM,
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const ARMSubtarget &STI);
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unsigned getJumpTableEncoding() const override;
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bool useSoftFloat() const override;
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SDValue LowerOperation(SDValue Op, SelectionDAG &DAG) const override;
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/// ReplaceNodeResults - Replace the results of node with an illegal result
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/// type with new values built out of custom code.
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///
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void ReplaceNodeResults(SDNode *N, SmallVectorImpl<SDValue>&Results,
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SelectionDAG &DAG) const override;
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const char *getTargetNodeName(unsigned Opcode) const override;
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bool isSelectSupported(SelectSupportKind Kind) const override {
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// ARM does not support scalar condition selects on vectors.
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return (Kind != ScalarCondVectorVal);
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}
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/// getSetCCResultType - Return the value type to use for ISD::SETCC.
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EVT getSetCCResultType(LLVMContext &Context, EVT VT) const override;
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MachineBasicBlock *
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EmitInstrWithCustomInserter(MachineInstr *MI,
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MachineBasicBlock *MBB) const override;
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void AdjustInstrPostInstrSelection(MachineInstr *MI,
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SDNode *Node) const override;
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SDValue PerformCMOVCombine(SDNode *N, SelectionDAG &DAG) const;
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SDValue PerformDAGCombine(SDNode *N, DAGCombinerInfo &DCI) const override;
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bool isDesirableToTransformToIntegerOp(unsigned Opc, EVT VT) const override;
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/// allowsMisalignedMemoryAccesses - Returns true if the target allows
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/// unaligned memory accesses of the specified type. Returns whether it
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/// is "fast" by reference in the second argument.
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bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AddrSpace,
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unsigned Align,
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bool *Fast) const override;
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EVT getOptimalMemOpType(uint64_t Size,
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unsigned DstAlign, unsigned SrcAlign,
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bool IsMemset, bool ZeroMemset,
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bool MemcpyStrSrc,
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MachineFunction &MF) const override;
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using TargetLowering::isZExtFree;
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bool isZExtFree(SDValue Val, EVT VT2) const override;
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bool isVectorLoadExtDesirable(SDValue ExtVal) const override;
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bool allowTruncateForTailCall(Type *Ty1, Type *Ty2) const override;
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/// isLegalAddressingMode - Return true if the addressing mode represented
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/// by AM is legal for this target, for a load/store of the specified type.
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bool isLegalAddressingMode(const AddrMode &AM, Type *Ty,
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unsigned AS) const override;
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bool isLegalT2ScaledAddressingMode(const AddrMode &AM, EVT VT) const;
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/// isLegalICmpImmediate - Return true if the specified immediate is legal
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/// icmp immediate, that is the target has icmp instructions which can
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/// compare a register against the immediate without having to materialize
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/// the immediate into a register.
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bool isLegalICmpImmediate(int64_t Imm) const override;
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/// isLegalAddImmediate - Return true if the specified immediate is legal
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/// add immediate, that is the target has add instructions which can
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/// add a register and the immediate without having to materialize
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/// the immediate into a register.
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bool isLegalAddImmediate(int64_t Imm) const override;
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/// getPreIndexedAddressParts - returns true by value, base pointer and
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/// offset pointer and addressing mode by reference if the node's address
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/// can be legally represented as pre-indexed load / store address.
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bool getPreIndexedAddressParts(SDNode *N, SDValue &Base, SDValue &Offset,
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ISD::MemIndexedMode &AM,
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SelectionDAG &DAG) const override;
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/// getPostIndexedAddressParts - returns true by value, base pointer and
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/// offset pointer and addressing mode by reference if this node can be
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/// combined with a load / store to form a post-indexed load / store.
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bool getPostIndexedAddressParts(SDNode *N, SDNode *Op, SDValue &Base,
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SDValue &Offset, ISD::MemIndexedMode &AM,
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SelectionDAG &DAG) const override;
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void computeKnownBitsForTargetNode(const SDValue Op, APInt &KnownZero,
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APInt &KnownOne,
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const SelectionDAG &DAG,
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unsigned Depth) const override;
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bool ExpandInlineAsm(CallInst *CI) const override;
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ConstraintType
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getConstraintType(const std::string &Constraint) const override;
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/// Examine constraint string and operand type and determine a weight value.
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/// The operand object must already have been set up with the operand type.
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ConstraintWeight getSingleConstraintMatchWeight(
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AsmOperandInfo &info, const char *constraint) const override;
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std::pair<unsigned, const TargetRegisterClass *>
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getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
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const std::string &Constraint,
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MVT VT) const override;
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/// LowerAsmOperandForConstraint - Lower the specified operand into the Ops
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/// vector. If it is invalid, don't add anything to Ops. If hasMemory is
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/// true it means one of the asm constraint of the inline asm instruction
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/// being processed is 'm'.
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void LowerAsmOperandForConstraint(SDValue Op, std::string &Constraint,
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std::vector<SDValue> &Ops,
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SelectionDAG &DAG) const override;
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unsigned getInlineAsmMemConstraint(
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const std::string &ConstraintCode) const override {
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if (ConstraintCode == "Q")
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return InlineAsm::Constraint_Q;
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else if (ConstraintCode.size() == 2) {
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if (ConstraintCode[0] == 'U') {
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switch(ConstraintCode[1]) {
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default:
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break;
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case 'm':
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return InlineAsm::Constraint_Um;
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case 'n':
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return InlineAsm::Constraint_Un;
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case 'q':
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return InlineAsm::Constraint_Uq;
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case 's':
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return InlineAsm::Constraint_Us;
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case 't':
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return InlineAsm::Constraint_Ut;
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case 'v':
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return InlineAsm::Constraint_Uv;
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case 'y':
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return InlineAsm::Constraint_Uy;
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}
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}
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}
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return TargetLowering::getInlineAsmMemConstraint(ConstraintCode);
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}
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const ARMSubtarget* getSubtarget() const {
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return Subtarget;
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}
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/// getRegClassFor - Return the register class that should be used for the
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/// specified value type.
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const TargetRegisterClass *getRegClassFor(MVT VT) const override;
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/// Returns true if a cast between SrcAS and DestAS is a noop.
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bool isNoopAddrSpaceCast(unsigned SrcAS, unsigned DestAS) const override {
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// Addrspacecasts are always noops.
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return true;
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}
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bool shouldAlignPointerArgs(CallInst *CI, unsigned &MinSize,
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unsigned &PrefAlign) const override;
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/// createFastISel - This method returns a target specific FastISel object,
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/// or null if the target does not support "fast" ISel.
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FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
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const TargetLibraryInfo *libInfo) const override;
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Sched::Preference getSchedulingPreference(SDNode *N) const override;
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bool
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isShuffleMaskLegal(const SmallVectorImpl<int> &M, EVT VT) const override;
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bool isOffsetFoldingLegal(const GlobalAddressSDNode *GA) const override;
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/// isFPImmLegal - Returns true if the target can instruction select the
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/// specified FP immediate natively. If false, the legalizer will
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/// materialize the FP immediate as a load from a constant pool.
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bool isFPImmLegal(const APFloat &Imm, EVT VT) const override;
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bool getTgtMemIntrinsic(IntrinsicInfo &Info,
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const CallInst &I,
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unsigned Intrinsic) const override;
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/// \brief Returns true if it is beneficial to convert a load of a constant
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/// to just the constant itself.
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bool shouldConvertConstantLoadToIntImm(const APInt &Imm,
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Type *Ty) const override;
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/// \brief Returns true if an argument of type Ty needs to be passed in a
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/// contiguous block of registers in calling convention CallConv.
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bool functionArgumentNeedsConsecutiveRegisters(
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Type *Ty, CallingConv::ID CallConv, bool isVarArg) const override;
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bool hasLoadLinkedStoreConditional() const override;
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Instruction *makeDMB(IRBuilder<> &Builder, ARM_MB::MemBOpt Domain) const;
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Value *emitLoadLinked(IRBuilder<> &Builder, Value *Addr,
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AtomicOrdering Ord) const override;
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Value *emitStoreConditional(IRBuilder<> &Builder, Value *Val,
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Value *Addr, AtomicOrdering Ord) const override;
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Instruction* emitLeadingFence(IRBuilder<> &Builder, AtomicOrdering Ord,
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bool IsStore, bool IsLoad) const override;
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Instruction* emitTrailingFence(IRBuilder<> &Builder, AtomicOrdering Ord,
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bool IsStore, bool IsLoad) const override;
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bool shouldExpandAtomicLoadInIR(LoadInst *LI) const override;
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bool shouldExpandAtomicStoreInIR(StoreInst *SI) const override;
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TargetLoweringBase::AtomicRMWExpansionKind
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shouldExpandAtomicRMWInIR(AtomicRMWInst *AI) const override;
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bool useLoadStackGuardNode() const override;
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bool canCombineStoreAndExtract(Type *VectorTy, Value *Idx,
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unsigned &Cost) const override;
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protected:
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std::pair<const TargetRegisterClass *, uint8_t>
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findRepresentativeClass(const TargetRegisterInfo *TRI,
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MVT VT) const override;
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private:
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/// Subtarget - Keep a pointer to the ARMSubtarget around so that we can
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/// make the right decision when generating code for different targets.
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const ARMSubtarget *Subtarget;
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const TargetRegisterInfo *RegInfo;
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const InstrItineraryData *Itins;
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/// ARMPCLabelIndex - Keep track of the number of ARM PC labels created.
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///
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unsigned ARMPCLabelIndex;
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void addTypeForNEON(MVT VT, MVT PromotedLdStVT, MVT PromotedBitwiseVT);
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void addDRTypeForNEON(MVT VT);
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void addQRTypeForNEON(MVT VT);
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std::pair<SDValue, SDValue> getARMXALUOOp(SDValue Op, SelectionDAG &DAG, SDValue &ARMcc) const;
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typedef SmallVector<std::pair<unsigned, SDValue>, 8> RegsToPassVector;
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void PassF64ArgInRegs(SDLoc dl, SelectionDAG &DAG,
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SDValue Chain, SDValue &Arg,
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RegsToPassVector &RegsToPass,
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CCValAssign &VA, CCValAssign &NextVA,
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SDValue &StackPtr,
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SmallVectorImpl<SDValue> &MemOpChains,
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ISD::ArgFlagsTy Flags) const;
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SDValue GetF64FormalArgument(CCValAssign &VA, CCValAssign &NextVA,
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SDValue &Root, SelectionDAG &DAG,
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SDLoc dl) const;
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CallingConv::ID getEffectiveCallingConv(CallingConv::ID CC,
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bool isVarArg) const;
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CCAssignFn *CCAssignFnForNode(CallingConv::ID CC, bool Return,
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bool isVarArg) const;
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SDValue LowerMemOpCallTo(SDValue Chain, SDValue StackPtr, SDValue Arg,
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SDLoc dl, SelectionDAG &DAG,
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const CCValAssign &VA,
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ISD::ArgFlagsTy Flags) const;
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SDValue LowerEH_SJLJ_SETJMP(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerEH_SJLJ_LONGJMP(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerINTRINSIC_WO_CHAIN(SDValue Op, SelectionDAG &DAG,
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|
const ARMSubtarget *Subtarget) const;
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|
SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalAddressDarwin(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalAddressELF(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalAddressWindows(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerToTLSGeneralDynamicModel(GlobalAddressSDNode *GA,
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|
SelectionDAG &DAG) const;
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|
SDValue LowerToTLSExecModels(GlobalAddressSDNode *GA,
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|
SelectionDAG &DAG,
|
|
TLSModel::Model model) const;
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|
SDValue LowerGLOBAL_OFFSET_TABLE(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerBR_JT(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerXALUO(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerSELECT(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerSELECT_CC(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerBR_CC(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerFCOPYSIGN(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerRETURNADDR(SDValue Op, SelectionDAG &DAG) const;
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SDValue LowerFRAMEADDR(SDValue Op, SelectionDAG &DAG) const;
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|
SDValue LowerShiftRightParts(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerShiftLeftParts(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerFLT_ROUNDS_(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerConstantFP(SDValue Op, SelectionDAG &DAG,
|
|
const ARMSubtarget *ST) const;
|
|
SDValue LowerBUILD_VECTOR(SDValue Op, SelectionDAG &DAG,
|
|
const ARMSubtarget *ST) const;
|
|
SDValue LowerFSINCOS(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerDivRem(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerDYNAMIC_STACKALLOC(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerFP_ROUND(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerFP_EXTEND(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const;
|
|
SDValue LowerINT_TO_FP(SDValue Op, SelectionDAG &DAG) const;
|
|
|
|
unsigned getRegisterByName(const char* RegName, EVT VT) const override;
|
|
|
|
/// isFMAFasterThanFMulAndFAdd - Return true if an FMA operation is faster
|
|
/// than a pair of fmul and fadd instructions. fmuladd intrinsics will be
|
|
/// expanded to FMAs when this method returns true, otherwise fmuladd is
|
|
/// expanded to fmul + fadd.
|
|
///
|
|
/// ARM supports both fused and unfused multiply-add operations; we already
|
|
/// lower a pair of fmul and fadd to the latter so it's not clear that there
|
|
/// would be a gain or that the gain would be worthwhile enough to risk
|
|
/// correctness bugs.
|
|
bool isFMAFasterThanFMulAndFAdd(EVT VT) const override { return false; }
|
|
|
|
SDValue ReconstructShuffle(SDValue Op, SelectionDAG &DAG) const;
|
|
|
|
SDValue LowerCallResult(SDValue Chain, SDValue InFlag,
|
|
CallingConv::ID CallConv, bool isVarArg,
|
|
const SmallVectorImpl<ISD::InputArg> &Ins,
|
|
SDLoc dl, SelectionDAG &DAG,
|
|
SmallVectorImpl<SDValue> &InVals,
|
|
bool isThisReturn, SDValue ThisVal) const;
|
|
|
|
SDValue
|
|
LowerFormalArguments(SDValue Chain,
|
|
CallingConv::ID CallConv, bool isVarArg,
|
|
const SmallVectorImpl<ISD::InputArg> &Ins,
|
|
SDLoc dl, SelectionDAG &DAG,
|
|
SmallVectorImpl<SDValue> &InVals) const override;
|
|
|
|
int StoreByValRegs(CCState &CCInfo, SelectionDAG &DAG,
|
|
SDLoc dl, SDValue &Chain,
|
|
const Value *OrigArg,
|
|
unsigned InRegsParamRecordIdx,
|
|
int ArgOffset,
|
|
unsigned ArgSize) const;
|
|
|
|
void VarArgStyleRegisters(CCState &CCInfo, SelectionDAG &DAG,
|
|
SDLoc dl, SDValue &Chain,
|
|
unsigned ArgOffset,
|
|
unsigned TotalArgRegsSaveSize,
|
|
bool ForceMutable = false) const;
|
|
|
|
SDValue
|
|
LowerCall(TargetLowering::CallLoweringInfo &CLI,
|
|
SmallVectorImpl<SDValue> &InVals) const override;
|
|
|
|
/// HandleByVal - Target-specific cleanup for ByVal support.
|
|
void HandleByVal(CCState *, unsigned &, unsigned) const override;
|
|
|
|
/// IsEligibleForTailCallOptimization - Check whether the call is eligible
|
|
/// for tail call optimization. Targets which want to do tail call
|
|
/// optimization should implement this function.
|
|
bool IsEligibleForTailCallOptimization(SDValue Callee,
|
|
CallingConv::ID CalleeCC,
|
|
bool isVarArg,
|
|
bool isCalleeStructRet,
|
|
bool isCallerStructRet,
|
|
const SmallVectorImpl<ISD::OutputArg> &Outs,
|
|
const SmallVectorImpl<SDValue> &OutVals,
|
|
const SmallVectorImpl<ISD::InputArg> &Ins,
|
|
SelectionDAG& DAG) const;
|
|
|
|
bool CanLowerReturn(CallingConv::ID CallConv,
|
|
MachineFunction &MF, bool isVarArg,
|
|
const SmallVectorImpl<ISD::OutputArg> &Outs,
|
|
LLVMContext &Context) const override;
|
|
|
|
SDValue
|
|
LowerReturn(SDValue Chain,
|
|
CallingConv::ID CallConv, bool isVarArg,
|
|
const SmallVectorImpl<ISD::OutputArg> &Outs,
|
|
const SmallVectorImpl<SDValue> &OutVals,
|
|
SDLoc dl, SelectionDAG &DAG) const override;
|
|
|
|
bool isUsedByReturnOnly(SDNode *N, SDValue &Chain) const override;
|
|
|
|
bool mayBeEmittedAsTailCall(CallInst *CI) const override;
|
|
|
|
SDValue getCMOV(SDLoc dl, EVT VT, SDValue FalseVal, SDValue TrueVal,
|
|
SDValue ARMcc, SDValue CCR, SDValue Cmp,
|
|
SelectionDAG &DAG) const;
|
|
SDValue getARMCmp(SDValue LHS, SDValue RHS, ISD::CondCode CC,
|
|
SDValue &ARMcc, SelectionDAG &DAG, SDLoc dl) const;
|
|
SDValue getVFPCmp(SDValue LHS, SDValue RHS,
|
|
SelectionDAG &DAG, SDLoc dl) const;
|
|
SDValue duplicateCmp(SDValue Cmp, SelectionDAG &DAG) const;
|
|
|
|
SDValue OptimizeVFPBrcond(SDValue Op, SelectionDAG &DAG) const;
|
|
|
|
void SetupEntryBlockForSjLj(MachineInstr *MI,
|
|
MachineBasicBlock *MBB,
|
|
MachineBasicBlock *DispatchBB, int FI) const;
|
|
|
|
void EmitSjLjDispatchBlock(MachineInstr *MI, MachineBasicBlock *MBB) const;
|
|
|
|
bool RemapAddSubWithFlags(MachineInstr *MI, MachineBasicBlock *BB) const;
|
|
|
|
MachineBasicBlock *EmitStructByval(MachineInstr *MI,
|
|
MachineBasicBlock *MBB) const;
|
|
|
|
MachineBasicBlock *EmitLowered__chkstk(MachineInstr *MI,
|
|
MachineBasicBlock *MBB) const;
|
|
};
|
|
|
|
enum NEONModImmType {
|
|
VMOVModImm,
|
|
VMVNModImm,
|
|
OtherModImm
|
|
};
|
|
|
|
namespace ARM {
|
|
FastISel *createFastISel(FunctionLoweringInfo &funcInfo,
|
|
const TargetLibraryInfo *libInfo);
|
|
}
|
|
}
|
|
|
|
#endif // ARMISELLOWERING_H
|