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add support for alignment attributes on load/store instructions

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36301 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Christopher Lamb 2007-04-21 08:16:25 +00:00
parent 1b7f584fd8
commit 2330e4d4c4
19 changed files with 3486 additions and 4367 deletions
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4
CREDITS.TXT
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@ -118,6 +118,10 @@ N: Sumant Kowshik
E: kowshik@uiuc.edu
D: Author of the original C backend
N: Christopher Lamb
E: christopher.lamb@gmail.com
D: aligned load/store support
N: Jim Laskey
E: jlaskey@apple.com
D: Improvements to the PPC backend, instruction scheduling

6
docs/BytecodeFormat.html
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@ -1587,15 +1587,15 @@ possible. </p>
<tr><td>Call+FastCC+TailCall</td><td>59</td><td>5</td><td>1.5</td></tr>
<tr><td>Call+FastCC</td><td>60</td><td>5</td><td>1.5</td></tr>
<tr><td>Call+CCC+TailCall</td><td>61</td><td>5</td><td>1.5</td></tr>
<tr><td>Load+Volatile</td><td>62</td><td>3</td><td>1.3</td></tr>
<tr><td>Store+Volatile</td><td>63</td><td>3</td><td>1.3</td></tr>
<tr><td>Load+Attributes</td><td>62</td><td>7</td><td>2.0</td></tr>
<tr><td>Store+Attributes</td><td>63</td><td>7</td><td>2.0</td></tr>
</tbody>
</table>
<p><b><a name="pi_note">* Note: </a></b>
These aren't really opcodes from an LLVM language perspective. They encode
information into other opcodes without reserving space for that information.
For example, opcode=63 is a Volatile Store. The opcode for this
For example, opcode=63 is an Attributed Store. The opcode for this
instruction is 25 (Store) but we encode it as 63 to indicate that is a Volatile
Store. The same is done for the calling conventions and tail calls.
In each of these entries in range 56-63, the opcode is documented as the base

6
docs/LangRef.html
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@ -2609,7 +2609,7 @@ instructions), the memory is reclaimed.</p>
Instruction</a> </div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre> &lt;result&gt; = load &lt;ty&gt;* &lt;pointer&gt;<br> &lt;result&gt; = volatile load &lt;ty&gt;* &lt;pointer&gt;<br></pre>
<pre> &lt;result&gt; = load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;]<br> &lt;result&gt; = volatile load &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;]<br></pre>
<h5>Overview:</h5>
<p>The '<tt>load</tt>' instruction is used to read from memory.</p>
<h5>Arguments:</h5>
@ -2634,8 +2634,8 @@ instructions. </p>
Instruction</a> </div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre> store &lt;ty&gt; &lt;value&gt;, &lt;ty&gt;* &lt;pointer&gt; <i>; yields {void}</i>
volatile store &lt;ty&gt; &lt;value&gt;, &lt;ty&gt;* &lt;pointer&gt; <i>; yields {void}</i>
<pre> store &lt;ty&gt; &lt;value&gt;, &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;] <i>; yields {void}</i>
volatile store &lt;ty&gt; &lt;value&gt;, &lt;ty&gt;* &lt;pointer&gt;[, align &lt;alignment&gt;] <i>; yields {void}</i>
</pre>
<h5>Overview:</h5>
<p>The '<tt>store</tt>' instruction is used to write to memory.</p>

11
include/llvm/CodeGen/SelectionDAG.h
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@ -311,10 +311,12 @@ public:
/// determined by their operands, and they produce a value AND a token chain.
///
SDOperand getLoad(MVT::ValueType VT, SDOperand Chain, SDOperand Ptr,
const Value *SV, int SVOffset, bool isVolatile=false);
const Value *SV, int SVOffset, bool isVolatile=false,
unsigned Alignment=0);
SDOperand getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr, const Value *SV,
int SVOffset, MVT::ValueType EVT, bool isVolatile=false);
int SVOffset, MVT::ValueType EVT, bool isVolatile=false,
unsigned Alignment=0);
SDOperand getIndexedLoad(SDOperand OrigLoad, SDOperand Base,
SDOperand Offset, ISD::MemIndexedMode AM);
SDOperand getVecLoad(unsigned Count, MVT::ValueType VT, SDOperand Chain,
@ -323,10 +325,11 @@ public:
/// getStore - Helper function to build ISD::STORE nodes.
///
SDOperand getStore(SDOperand Chain, SDOperand Val, SDOperand Ptr,
const Value *SV, int SVOffset, bool isVolatile=false);
const Value *SV, int SVOffset, bool isVolatile=false,
unsigned Alignment=0);
SDOperand getTruncStore(SDOperand Chain, SDOperand Val, SDOperand Ptr,
const Value *SV, int SVOffset, MVT::ValueType TVT,
bool isVolatile=false);
bool isVolatile=false, unsigned Alignment=0);
SDOperand getIndexedStore(SDOperand OrigStoe, SDOperand Base,
SDOperand Offset, ISD::MemIndexedMode AM);

4
include/llvm/CodeGen/SelectionDAGNodes.h
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@ -1448,7 +1448,7 @@ protected:
friend class SelectionDAG;
LoadSDNode(SDOperand *ChainPtrOff, SDVTList VTs,
ISD::MemIndexedMode AM, ISD::LoadExtType ETy, MVT::ValueType LVT,
const Value *SV, int O=0, unsigned Align=1, bool Vol=false)
const Value *SV, int O=0, unsigned Align=0, bool Vol=false)
: SDNode(ISD::LOAD, VTs),
AddrMode(AM), ExtType(ETy), LoadedVT(LVT), SrcValue(SV), SVOffset(O),
Alignment(Align), IsVolatile(Vol) {
@ -1456,6 +1456,7 @@ protected:
Ops[1] = ChainPtrOff[1]; // Ptr
Ops[2] = ChainPtrOff[2]; // Off
InitOperands(Ops, 3);
assert(Align != 0 && "Loads should have non-zero aligment");
assert((getOffset().getOpcode() == ISD::UNDEF ||
AddrMode != ISD::UNINDEXED) &&
"Only indexed load has a non-undef offset operand");
@ -1518,6 +1519,7 @@ protected:
Ops[2] = ChainValuePtrOff[2]; // Ptr
Ops[3] = ChainValuePtrOff[3]; // Off
InitOperands(Ops, 4);
assert(Align != 0 && "Stores should have non-zero aligment");
assert((getOffset().getOpcode() == ISD::UNDEF ||
AddrMode != ISD::UNINDEXED) &&
"Only indexed store has a non-undef offset operand");

40
include/llvm/Instructions.h
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@ -211,9 +211,11 @@ public:
/// SubclassData field in Value to store whether or not the load is volatile.
///
class LoadInst : public UnaryInstruction {
LoadInst(const LoadInst &LI)
: UnaryInstruction(LI.getType(), Load, LI.getOperand(0)) {
setVolatile(LI.isVolatile());
setAlignment(LI.getAlignment());
#ifndef NDEBUG
AssertOK();
@ -223,14 +225,16 @@ class LoadInst : public UnaryInstruction {
public:
LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBefore);
LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile = false,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile, unsigned Align,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
BasicBlock *InsertAtEnd);
LoadInst(Value *Ptr, const char *Name, Instruction *InsertBefore);
LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAtEnd);
explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
explicit LoadInst(Value *Ptr, const char *Name = 0, bool isVolatile = false,
Instruction *InsertBefore = 0);
LoadInst(Value *Ptr, const char *Name, bool isVolatile,
BasicBlock *InsertAtEnd);
@ -238,14 +242,23 @@ public:
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
///
bool isVolatile() const { return SubclassData; }
bool isVolatile() const { return SubclassData & 1; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) { SubclassData = V; }
void setVolatile(bool V) { SubclassData = (SubclassData & ~1) | (V) ? 1 : 0; }
virtual LoadInst *clone() const;
/// getAlignment - Return the alignment of the access that is being performed
///
unsigned getAlignment() const {
signed Log2AlignVal = ((SubclassData>>1)-1);
return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
}
void setAlignment(unsigned Align);
Value *getPointerOperand() { return getOperand(0); }
const Value *getPointerOperand() const { return getOperand(0); }
static unsigned getPointerOperandIndex() { return 0U; }
@ -269,10 +282,13 @@ public:
///
class StoreInst : public Instruction {
Use Ops[2];
StoreInst(const StoreInst &SI) : Instruction(SI.getType(), Store, Ops, 2) {
Ops[0].init(SI.Ops[0], this);
Ops[1].init(SI.Ops[1], this);
setVolatile(SI.isVolatile());
setAlignment(SI.getAlignment());
#ifndef NDEBUG
AssertOK();
#endif
@ -283,17 +299,19 @@ public:
StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd);
StoreInst(Value *Val, Value *Ptr, bool isVolatile = false,
Instruction *InsertBefore = 0);
StoreInst(Value *Val, Value *Ptr, bool isVolatile,
unsigned Align, Instruction *InsertBefore = 0);
StoreInst(Value *Val, Value *Ptr, bool isVolatile, BasicBlock *InsertAtEnd);
/// isVolatile - Return true if this is a load from a volatile memory
/// location.
///
bool isVolatile() const { return SubclassData; }
bool isVolatile() const { return SubclassData & 1; }
/// setVolatile - Specify whether this is a volatile load or not.
///
void setVolatile(bool V) { SubclassData = V; }
void setVolatile(bool V) { SubclassData = (SubclassData & ~1) | (V) ? 1 : 0; }
/// Transparently provide more efficient getOperand methods.
Value *getOperand(unsigned i) const {
@ -306,7 +324,15 @@ public:
}
unsigned getNumOperands() const { return 2; }
/// getAlignment - Return the alignment of the access that is being performed
///
unsigned getAlignment() const {
signed Log2AlignVal = ((SubclassData>>1)-1);
return ((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal);
}
void setAlignment(unsigned Align);
virtual StoreInst *clone() const;
Value *getPointerOperand() { return getOperand(1); }

7084
lib/AsmParser/llvmAsmParser.cpp.cvs
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File diff suppressed because it is too large Load Diff

448
lib/AsmParser/llvmAsmParser.h.cvs
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@ -1,308 +1,4 @@
/* A Bison parser, made by GNU Bison 2.1. */
/* Skeleton parser for Yacc-like parsing with Bison,
Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA. */
/* As a special exception, when this file is copied by Bison into a
Bison output file, you may use that output file without restriction.
This special exception was added by the Free Software Foundation
in version 1.24 of Bison. */
/* Tokens. */
#ifndef YYTOKENTYPE
# define YYTOKENTYPE
/* Put the tokens into the symbol table, so that GDB and other debuggers
know about them. */
enum yytokentype {
ESINT64VAL = 258,
EUINT64VAL = 259,
ESAPINTVAL = 260,
EUAPINTVAL = 261,
LOCALVAL_ID = 262,
GLOBALVAL_ID = 263,
FPVAL = 264,
VOID = 265,
INTTYPE = 266,
FLOAT = 267,
DOUBLE = 268,
LABEL = 269,
TYPE = 270,
LOCALVAR = 271,
GLOBALVAR = 272,
LABELSTR = 273,
STRINGCONSTANT = 274,
ATSTRINGCONSTANT = 275,
ZEROINITIALIZER = 276,
TRUETOK = 277,
FALSETOK = 278,
BEGINTOK = 279,
ENDTOK = 280,
DECLARE = 281,
DEFINE = 282,
GLOBAL = 283,
CONSTANT = 284,
SECTION = 285,
VOLATILE = 286,
THREAD_LOCAL = 287,
TO = 288,
DOTDOTDOT = 289,
NULL_TOK = 290,
UNDEF = 291,
INTERNAL = 292,
LINKONCE = 293,
WEAK = 294,
APPENDING = 295,
DLLIMPORT = 296,
DLLEXPORT = 297,
EXTERN_WEAK = 298,
OPAQUE = 299,
EXTERNAL = 300,
TARGET = 301,
TRIPLE = 302,
ALIGN = 303,
DEPLIBS = 304,
CALL = 305,
TAIL = 306,
ASM_TOK = 307,
MODULE = 308,
SIDEEFFECT = 309,
CC_TOK = 310,
CCC_TOK = 311,
FASTCC_TOK = 312,
COLDCC_TOK = 313,
X86_STDCALLCC_TOK = 314,
X86_FASTCALLCC_TOK = 315,
DATALAYOUT = 316,
RET = 317,
BR = 318,
SWITCH = 319,
INVOKE = 320,
UNWIND = 321,
UNREACHABLE = 322,
ADD = 323,
SUB = 324,
MUL = 325,
UDIV = 326,
SDIV = 327,
FDIV = 328,
UREM = 329,
SREM = 330,
FREM = 331,
AND = 332,
OR = 333,
XOR = 334,
SHL = 335,
LSHR = 336,
ASHR = 337,
ICMP = 338,
FCMP = 339,
EQ = 340,
NE = 341,
SLT = 342,
SGT = 343,
SLE = 344,
SGE = 345,
ULT = 346,
UGT = 347,
ULE = 348,
UGE = 349,
OEQ = 350,
ONE = 351,
OLT = 352,
OGT = 353,
OLE = 354,
OGE = 355,
ORD = 356,
UNO = 357,
UEQ = 358,
UNE = 359,
MALLOC = 360,
ALLOCA = 361,
FREE = 362,
LOAD = 363,
STORE = 364,
GETELEMENTPTR = 365,
TRUNC = 366,
ZEXT = 367,
SEXT = 368,
FPTRUNC = 369,
FPEXT = 370,
BITCAST = 371,
UITOFP = 372,
SITOFP = 373,
FPTOUI = 374,
FPTOSI = 375,
INTTOPTR = 376,
PTRTOINT = 377,
PHI_TOK = 378,
SELECT = 379,
VAARG = 380,
EXTRACTELEMENT = 381,
INSERTELEMENT = 382,
SHUFFLEVECTOR = 383,
NORETURN = 384,
INREG = 385,
SRET = 386,
NOUNWIND = 387,
DEFAULT = 388,
HIDDEN = 389
};
#endif
/* Tokens. */
#define ESINT64VAL 258
#define EUINT64VAL 259
#define ESAPINTVAL 260
#define EUAPINTVAL 261
#define LOCALVAL_ID 262
#define GLOBALVAL_ID 263
#define FPVAL 264
#define VOID 265
#define INTTYPE 266
#define FLOAT 267
#define DOUBLE 268
#define LABEL 269
#define TYPE 270
#define LOCALVAR 271
#define GLOBALVAR 272
#define LABELSTR 273
#define STRINGCONSTANT 274
#define ATSTRINGCONSTANT 275
#define ZEROINITIALIZER 276
#define TRUETOK 277
#define FALSETOK 278
#define BEGINTOK 279
#define ENDTOK 280
#define DECLARE 281
#define DEFINE 282
#define GLOBAL 283
#define CONSTANT 284
#define SECTION 285
#define VOLATILE 286
#define THREAD_LOCAL 287
#define TO 288
#define DOTDOTDOT 289
#define NULL_TOK 290
#define UNDEF 291
#define INTERNAL 292
#define LINKONCE 293
#define WEAK 294
#define APPENDING 295
#define DLLIMPORT 296
#define DLLEXPORT 297
#define EXTERN_WEAK 298
#define OPAQUE 299
#define EXTERNAL 300
#define TARGET 301
#define TRIPLE 302
#define ALIGN 303
#define DEPLIBS 304
#define CALL 305
#define TAIL 306
#define ASM_TOK 307
#define MODULE 308
#define SIDEEFFECT 309
#define CC_TOK 310
#define CCC_TOK 311
#define FASTCC_TOK 312
#define COLDCC_TOK 313
#define X86_STDCALLCC_TOK 314
#define X86_FASTCALLCC_TOK 315
#define DATALAYOUT 316
#define RET 317
#define BR 318
#define SWITCH 319
#define INVOKE 320
#define UNWIND 321
#define UNREACHABLE 322
#define ADD 323
#define SUB 324
#define MUL 325
#define UDIV 326
#define SDIV 327
#define FDIV 328
#define UREM 329
#define SREM 330
#define FREM 331
#define AND 332
#define OR 333
#define XOR 334
#define SHL 335
#define LSHR 336
#define ASHR 337
#define ICMP 338
#define FCMP 339
#define EQ 340
#define NE 341
#define SLT 342
#define SGT 343
#define SLE 344
#define SGE 345
#define ULT 346
#define UGT 347
#define ULE 348
#define UGE 349
#define OEQ 350
#define ONE 351
#define OLT 352
#define OGT 353
#define OLE 354
#define OGE 355
#define ORD 356
#define UNO 357
#define UEQ 358
#define UNE 359
#define MALLOC 360
#define ALLOCA 361
#define FREE 362
#define LOAD 363
#define STORE 364
#define GETELEMENTPTR 365
#define TRUNC 366
#define ZEXT 367
#define SEXT 368
#define FPTRUNC 369
#define FPEXT 370
#define BITCAST 371
#define UITOFP 372
#define SITOFP 373
#define FPTOUI 374
#define FPTOSI 375
#define INTTOPTR 376
#define PTRTOINT 377
#define PHI_TOK 378
#define SELECT 379
#define VAARG 380
#define EXTRACTELEMENT 381
#define INSERTELEMENT 382
#define SHUFFLEVECTOR 383
#define NORETURN 384
#define INREG 385
#define SRET 386
#define NOUNWIND 387
#define DEFAULT 388
#define HIDDEN 389
#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
#line 938 "/proj/llvm/llvm-2/lib/AsmParser/llvmAsmParser.y"
typedef union YYSTYPE {
typedef union {
llvm::Module *ModuleVal;
llvm::Function *FunctionVal;
llvm::BasicBlock *BasicBlockVal;
@ -348,14 +44,138 @@ typedef union YYSTYPE {
llvm::ICmpInst::Predicate IPredicate;
llvm::FCmpInst::Predicate FPredicate;
} YYSTYPE;
/* Line 1447 of yacc.c. */
#line 353 "llvmAsmParser.tab.h"
# define yystype YYSTYPE /* obsolescent; will be withdrawn */
# define YYSTYPE_IS_DECLARED 1
# define YYSTYPE_IS_TRIVIAL 1
#endif
#define ESINT64VAL 257
#define EUINT64VAL 258
#define ESAPINTVAL 259
#define EUAPINTVAL 260
#define LOCALVAL_ID 261
#define GLOBALVAL_ID 262
#define FPVAL 263
#define VOID 264
#define INTTYPE 265
#define FLOAT 266
#define DOUBLE 267
#define LABEL 268
#define TYPE 269
#define LOCALVAR 270
#define GLOBALVAR 271
#define LABELSTR 272
#define STRINGCONSTANT 273
#define ATSTRINGCONSTANT 274
#define ZEROINITIALIZER 275
#define TRUETOK 276
#define FALSETOK 277
#define BEGINTOK 278
#define ENDTOK 279
#define DECLARE 280
#define DEFINE 281
#define GLOBAL 282
#define CONSTANT 283
#define SECTION 284
#define VOLATILE 285
#define THREAD_LOCAL 286
#define TO 287
#define DOTDOTDOT 288
#define NULL_TOK 289
#define UNDEF 290
#define INTERNAL 291
#define LINKONCE 292
#define WEAK 293
#define APPENDING 294
#define DLLIMPORT 295
#define DLLEXPORT 296
#define EXTERN_WEAK 297
#define OPAQUE 298
#define EXTERNAL 299
#define TARGET 300
#define TRIPLE 301
#define ALIGN 302
#define DEPLIBS 303
#define CALL 304
#define TAIL 305
#define ASM_TOK 306
#define MODULE 307
#define SIDEEFFECT 308
#define CC_TOK 309
#define CCC_TOK 310
#define FASTCC_TOK 311
#define COLDCC_TOK 312
#define X86_STDCALLCC_TOK 313
#define X86_FASTCALLCC_TOK 314
#define DATALAYOUT 315
#define RET 316
#define BR 317
#define SWITCH 318
#define INVOKE 319
#define UNWIND 320
#define UNREACHABLE 321
#define ADD 322
#define SUB 323
#define MUL 324
#define UDIV 325
#define SDIV 326
#define FDIV 327
#define UREM 328
#define SREM 329
#define FREM 330
#define AND 331
#define OR 332
#define XOR 333
#define SHL 334
#define LSHR 335
#define ASHR 336
#define ICMP 337
#define FCMP 338
#define EQ 339
#define NE 340
#define SLT 341
#define SGT 342
#define SLE 343
#define SGE 344
#define ULT 345
#define UGT 346
#define ULE 347
#define UGE 348
#define OEQ 349
#define ONE 350
#define OLT 351
#define OGT 352
#define OLE 353
#define OGE 354
#define ORD 355
#define UNO 356
#define UEQ 357
#define UNE 358
#define MALLOC 359
#define ALLOCA 360
#define FREE 361
#define LOAD 362
#define STORE 363
#define GETELEMENTPTR 364
#define TRUNC 365
#define ZEXT 366
#define SEXT 367
#define FPTRUNC 368
#define FPEXT 369
#define BITCAST 370
#define UITOFP 371
#define SITOFP 372
#define FPTOUI 373
#define FPTOSI 374
#define INTTOPTR 375
#define PTRTOINT 376
#define PHI_TOK 377
#define SELECT 378
#define VAARG 379
#define EXTRACTELEMENT 380
#define INSERTELEMENT 381
#define SHUFFLEVECTOR 382
#define NORETURN 383
#define INREG 384
#define SRET 385
#define NOUNWIND 386
#define DEFAULT 387
#define HIDDEN 388
extern YYSTYPE llvmAsmlval;

8
lib/AsmParser/llvmAsmParser.y
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@ -2921,7 +2921,7 @@ MemoryInst : MALLOC Types OptCAlign {
CHECK_FOR_ERROR
}
| OptVolatile LOAD Types ValueRef {
| OptVolatile LOAD Types ValueRef OptCAlign {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
if (!isa<PointerType>($3->get()))
@ -2932,10 +2932,10 @@ MemoryInst : MALLOC Types OptCAlign {
(*$3)->getDescription());
Value* tmpVal = getVal(*$3, $4);
CHECK_FOR_ERROR
$$ = new LoadInst(tmpVal, "", $1);
$$ = new LoadInst(tmpVal, "", $1, $5);
delete $3;
}
| OptVolatile STORE ResolvedVal ',' Types ValueRef {
| OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
const PointerType *PT = dyn_cast<PointerType>($5->get());
@ -2949,7 +2949,7 @@ MemoryInst : MALLOC Types OptCAlign {
Value* tmpVal = getVal(*$5, $6);
CHECK_FOR_ERROR
$$ = new StoreInst($3, tmpVal, $1);
$$ = new StoreInst($3, tmpVal, $1, $7);
delete $5;
}
| GETELEMENTPTR Types ValueRef IndexList {

8
lib/AsmParser/llvmAsmParser.y.cvs
View File

@ -2921,7 +2921,7 @@ MemoryInst : MALLOC Types OptCAlign {
CHECK_FOR_ERROR
}
| OptVolatile LOAD Types ValueRef {
| OptVolatile LOAD Types ValueRef OptCAlign {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$3)->getDescription());
if (!isa<PointerType>($3->get()))
@ -2932,10 +2932,10 @@ MemoryInst : MALLOC Types OptCAlign {
(*$3)->getDescription());
Value* tmpVal = getVal(*$3, $4);
CHECK_FOR_ERROR
$$ = new LoadInst(tmpVal, "", $1);
$$ = new LoadInst(tmpVal, "", $1, $5);
delete $3;
}
| OptVolatile STORE ResolvedVal ',' Types ValueRef {
| OptVolatile STORE ResolvedVal ',' Types ValueRef OptCAlign {
if (!UpRefs.empty())
GEN_ERROR("Invalid upreference in type: " + (*$5)->getDescription());
const PointerType *PT = dyn_cast<PointerType>($5->get());
@ -2949,7 +2949,7 @@ MemoryInst : MALLOC Types OptCAlign {
Value* tmpVal = getVal(*$5, $6);
CHECK_FOR_ERROR
$$ = new StoreInst($3, tmpVal, $1);
$$ = new StoreInst($3, tmpVal, $1, $7);
delete $5;
}
| GETELEMENTPTR Types ValueRef IndexList {

24
lib/Bytecode/Reader/Reader.cpp
View File

@ -831,13 +831,31 @@ void BytecodeReader::ParseInstruction(SmallVector<unsigned, 8> &Oprnds,
&Idx[0], Idx.size());
break;
}
case 62: // volatile load
case 62: { // attributed load
if (Oprnds.size() != 2 || !isa<PointerType>(InstTy))
error("Invalid attributed load instruction!");
signed Log2AlignVal = ((Oprnds[1]>>1)-1);
Result = new LoadInst(getValue(iType, Oprnds[0]), "", (Oprnds[1] & 1),
((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal));
break;
}
case Instruction::Load:
if (Oprnds.size() != 1 || !isa<PointerType>(InstTy))
error("Invalid load instruction!");
Result = new LoadInst(getValue(iType, Oprnds[0]), "", Opcode == 62);
Result = new LoadInst(getValue(iType, Oprnds[0]), "");
break;
case 63: // volatile store
case 63: { // attributed store
if (!isa<PointerType>(InstTy) || Oprnds.size() != 3)
error("Invalid store instruction!");
Value *Ptr = getValue(iType, Oprnds[1]);
const Type *ValTy = cast<PointerType>(Ptr->getType())->getElementType();
signed Log2AlignVal = ((Oprnds[2]>>1)-1);
Result = new StoreInst(getValue(getTypeSlot(ValTy), Oprnds[0]), Ptr,
(Oprnds[2] & 1),
((Log2AlignVal < 0) ? 0 : 1<<Log2AlignVal));
break;
}
case Instruction::Store: {
if (!isa<PointerType>(InstTy) || Oprnds.size() != 2)
error("Invalid store instruction!");

32
lib/Bytecode/Writer/Writer.cpp
View File

@ -616,7 +616,7 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
unsigned Opcode = I.getOpcode();
unsigned NumOperands = I.getNumOperands();
// Encode 'tail call' as 61, 'volatile load' as 62, and 'volatile store' as
// Encode 'tail call' as 61
// 63.
if (const CallInst *CI = dyn_cast<CallInst>(&I)) {
if (CI->getCallingConv() == CallingConv::C) {
@ -632,10 +632,6 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
} else {
Opcode = 58; // Call escape sequence.
}
} else if (isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile()) {
Opcode = 62;
} else if (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile()) {
Opcode = 63;
}
// Figure out which type to encode with the instruction. Typically we want
@ -744,6 +740,32 @@ void BytecodeWriter::outputInstruction(const Instruction &I) {
} else if (isa<InvokeInst>(I)) {
// Invoke escape seq has at least 4 operands to encode.
++NumOperands;
} else if (const LoadInst *LI = dyn_cast<LoadInst>(&I)) {
// Encode attributed load as opcode 62
// We need to encode the attributes of the load instruction as the second
// operand. Its not really a slot, but we don't want to break the
// instruction format for these instructions.
if (LI->getAlignment() || LI->isVolatile()) {
NumOperands = 2;
Slots[1] = ((Log2_32(LI->getAlignment())+1)<<1) +
(LI->isVolatile() ? 1 : 0);
if (Slots[1] > MaxOpSlot)
MaxOpSlot = Slots[1];
Opcode = 62;
}
} else if (const StoreInst *SI = dyn_cast<StoreInst>(&I)) {
// Encode attributed store as opcode 63
// We need to encode the attributes of the store instruction as the third
// operand. Its not really a slot, but we don't want to break the
// instruction format for these instructions.
if (SI->getAlignment() || SI->isVolatile()) {
NumOperands = 3;
Slots[2] = ((Log2_32(SI->getAlignment())+1)<<1) +
(SI->isVolatile() ? 1 : 0);
if (Slots[2] > MaxOpSlot)
MaxOpSlot = Slots[2];
Opcode = 63;
}
}
// Decide which instruction encoding to use. This is determined primarily

70
lib/CodeGen/SelectionDAG/DAGCombiner.cpp
View File

@ -1263,7 +1263,9 @@ SDOperand DAGCombiner::visitAND(SDNode *N) {
(!AfterLegalize || TLI.isLoadXLegal(ISD::ZEXTLOAD, EVT))) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::ZEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
AddToWorkList(N);
CombineTo(N0.Val, ExtLoad, ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
@ -1280,7 +1282,9 @@ SDOperand DAGCombiner::visitAND(SDNode *N) {
(!AfterLegalize || TLI.isLoadXLegal(ISD::ZEXTLOAD, EVT))) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::ZEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
AddToWorkList(N);
CombineTo(N0.Val, ExtLoad, ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
@ -1320,7 +1324,8 @@ SDOperand DAGCombiner::visitAND(SDNode *N) {
AddToWorkList(NewPtr.Val);
SDOperand Load =
DAG.getExtLoad(ISD::ZEXTLOAD, VT, LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset(), EVT);
LN0->getSrcValue(), LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(), LN0->getAlignment());
AddToWorkList(N);
CombineTo(N0.Val, Load, Load.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
@ -2120,7 +2125,8 @@ SDOperand DAGCombiner::visitSIGN_EXTEND(SDNode *N) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(),
N0.getValueType());
N0.getValueType(),
LN0->isVolatile());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2136,7 +2142,9 @@ SDOperand DAGCombiner::visitSIGN_EXTEND(SDNode *N) {
if (!AfterLegalize || TLI.isLoadXLegal(ISD::SEXTLOAD, EVT)) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2212,7 +2220,9 @@ SDOperand DAGCombiner::visitZERO_EXTEND(SDNode *N) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::ZEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(),
N0.getValueType());
N0.getValueType(),
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2227,7 +2237,9 @@ SDOperand DAGCombiner::visitZERO_EXTEND(SDNode *N) {
MVT::ValueType EVT = LN0->getLoadedVT();
SDOperand ExtLoad = DAG.getExtLoad(ISD::ZEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2303,7 +2315,9 @@ SDOperand DAGCombiner::visitANY_EXTEND(SDNode *N) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(),
N0.getValueType());
N0.getValueType(),
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2321,7 +2335,9 @@ SDOperand DAGCombiner::visitANY_EXTEND(SDNode *N) {
SDOperand ExtLoad = DAG.getExtLoad(LN0->getExtensionType(), VT,
LN0->getChain(), LN0->getBasePtr(),
LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::TRUNCATE, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -2398,9 +2414,11 @@ SDOperand DAGCombiner::ReduceLoadWidth(SDNode *N) {
AddToWorkList(NewPtr.Val);
SDOperand Load = (ExtType == ISD::NON_EXTLOAD)
? DAG.getLoad(VT, LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset())
LN0->getSrcValue(), LN0->getSrcValueOffset(),
LN0->isVolatile(), LN0->getAlignment())
: DAG.getExtLoad(ExtType, VT, LN0->getChain(), NewPtr,
LN0->getSrcValue(), LN0->getSrcValueOffset(), EVT);
LN0->getSrcValue(), LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(), LN0->getAlignment());
AddToWorkList(N);
if (CombineSRL) {
std::vector<SDNode*> NowDead;
@ -2479,7 +2497,9 @@ SDOperand DAGCombiner::visitSIGN_EXTEND_INREG(SDNode *N) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, ExtLoad, ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
@ -2492,7 +2512,9 @@ SDOperand DAGCombiner::visitSIGN_EXTEND_INREG(SDNode *N) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDOperand ExtLoad = DAG.getExtLoad(ISD::SEXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(), EVT);
LN0->getSrcValueOffset(), EVT,
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, ExtLoad, ExtLoad.getValue(1));
return SDOperand(N, 0); // Return N so it doesn't get rechecked!
@ -2552,7 +2574,8 @@ SDOperand DAGCombiner::visitBIT_CONVERT(SDNode *N) {
if (0 && ISD::isNON_EXTLoad(N0.Val) && N0.hasOneUse()) {
LoadSDNode *LN0 = cast<LoadSDNode>(N0);
SDOperand Load = DAG.getLoad(VT, LN0->getChain(), LN0->getBasePtr(),
LN0->getSrcValue(), LN0->getSrcValueOffset());
LN0->getSrcValue(), LN0->getSrcValueOffset(),
LN0->isVolatile(), LN0->getAlignment());
AddToWorkList(N);
CombineTo(N0.Val, DAG.getNode(ISD::BIT_CONVERT, N0.getValueType(), Load),
Load.getValue(1));
@ -2942,7 +2965,9 @@ SDOperand DAGCombiner::visitFP_EXTEND(SDNode *N) {
SDOperand ExtLoad = DAG.getExtLoad(ISD::EXTLOAD, VT, LN0->getChain(),
LN0->getBasePtr(), LN0->getSrcValue(),
LN0->getSrcValueOffset(),
N0.getValueType());
N0.getValueType(),
LN0->isVolatile(),
LN0->getAlignment());
CombineTo(N, ExtLoad);
CombineTo(N0.Val, DAG.getNode(ISD::FP_ROUND, N0.getValueType(), ExtLoad),
ExtLoad.getValue(1));
@ -3331,13 +3356,16 @@ SDOperand DAGCombiner::visitLOAD(SDNode *N) {
// Replace the chain to void dependency.
if (LD->getExtensionType() == ISD::NON_EXTLOAD) {
ReplLoad = DAG.getLoad(N->getValueType(0), BetterChain, Ptr,
LD->getSrcValue(), LD->getSrcValueOffset());
LD->getSrcValue(), LD->getSrcValueOffset(),
LD->isVolatile(), LD->getAlignment());
} else {
ReplLoad = DAG.getExtLoad(LD->getExtensionType(),
LD->getValueType(0),
BetterChain, Ptr, LD->getSrcValue(),
LD->getSrcValueOffset(),
LD->getLoadedVT());
LD->getLoadedVT(),
LD->isVolatile(),
LD->getAlignment());
}
// Create token factor to keep old chain connected.
@ -4040,13 +4068,17 @@ bool DAGCombiner::SimplifySelectOps(SDNode *TheSelect, SDOperand LHS,
if (LLD->getExtensionType() == ISD::NON_EXTLOAD)
Load = DAG.getLoad(TheSelect->getValueType(0), LLD->getChain(),
Addr,LLD->getSrcValue(),
LLD->getSrcValueOffset());
LLD->getSrcValueOffset(),
LLD->isVolatile(),
LLD->getAlignment());
else {
Load = DAG.getExtLoad(LLD->getExtensionType(),
TheSelect->getValueType(0),
LLD->getChain(), Addr, LLD->getSrcValue(),
LLD->getSrcValueOffset(),
LLD->getLoadedVT());
LLD->getLoadedVT(),
LLD->isVolatile(),
LLD->getAlignment());
}
// Users of the select now use the result of the load.
CombineTo(TheSelect, Load);

33
lib/CodeGen/SelectionDAG/SelectionDAG.cpp
View File

@ -20,6 +20,7 @@
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/MRegisterInfo.h"
#include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetInstrInfo.h"
@ -1539,9 +1540,7 @@ SDOperand SelectionDAG::getNode(unsigned Opcode, MVT::ValueType VT,
SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr,
const Value *SV, int SVOffset,
bool isVolatile) {
// FIXME: Alignment == 1 for now.
unsigned Alignment = 1;
bool isVolatile, unsigned Alignment) {
SDVTList VTs = getVTList(VT, MVT::Other);
SDOperand Undef = getNode(ISD::UNDEF, Ptr.getValueType());
SDOperand Ops[] = { Chain, Ptr, Undef };
@ -1557,6 +1556,10 @@ SDOperand SelectionDAG::getLoad(MVT::ValueType VT,
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
if (Alignment == 0) { // Ensure that codegen never sees alignment 0
const Type *Ty = MVT::getTypeForValueType(VT);
Alignment = TLI.getTargetData()->getABITypeAlignment(Ty);
}
SDNode *N = new LoadSDNode(Ops, VTs, ISD::UNINDEXED,
ISD::NON_EXTLOAD, VT, SV, SVOffset, Alignment,
isVolatile);
@ -1569,7 +1572,7 @@ SDOperand SelectionDAG::getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT,
SDOperand Chain, SDOperand Ptr,
const Value *SV,
int SVOffset, MVT::ValueType EVT,
bool isVolatile) {
bool isVolatile, unsigned Alignment) {
// If they are asking for an extending load from/to the same thing, return a
// normal load.
if (VT == EVT)
@ -1584,8 +1587,6 @@ SDOperand SelectionDAG::getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT,
assert(MVT::isInteger(VT) == MVT::isInteger(EVT) &&
"Cannot convert from FP to Int or Int -> FP!");
// FIXME: Alignment == 1 for now.
unsigned Alignment = 1;
SDVTList VTs = getVTList(VT, MVT::Other);
SDOperand Undef = getNode(ISD::UNDEF, Ptr.getValueType());
SDOperand Ops[] = { Chain, Ptr, Undef };
@ -1601,6 +1602,10 @@ SDOperand SelectionDAG::getExtLoad(ISD::LoadExtType ExtType, MVT::ValueType VT,
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
if (Alignment == 0) { // Ensure that codegen never sees alignment 0
const Type *Ty = MVT::getTypeForValueType(VT);
Alignment = TLI.getTargetData()->getABITypeAlignment(Ty);
}
SDNode *N = new LoadSDNode(Ops, VTs, ISD::UNINDEXED, ExtType, EVT,
SV, SVOffset, Alignment, isVolatile);
CSEMap.InsertNode(N, IP);
@ -1648,11 +1653,9 @@ SDOperand SelectionDAG::getVecLoad(unsigned Count, MVT::ValueType EVT,
SDOperand SelectionDAG::getStore(SDOperand Chain, SDOperand Val,
SDOperand Ptr, const Value *SV, int SVOffset,
bool isVolatile) {
bool isVolatile, unsigned Alignment) {
MVT::ValueType VT = Val.getValueType();
// FIXME: Alignment == 1 for now.
unsigned Alignment = 1;
SDVTList VTs = getVTList(MVT::Other);
SDOperand Undef = getNode(ISD::UNDEF, Ptr.getValueType());
SDOperand Ops[] = { Chain, Val, Ptr, Undef };
@ -1668,6 +1671,10 @@ SDOperand SelectionDAG::getStore(SDOperand Chain, SDOperand Val,
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
if (Alignment == 0) { // Ensure that codegen never sees alignment 0
const Type *Ty = MVT::getTypeForValueType(VT);
Alignment = TLI.getTargetData()->getABITypeAlignment(Ty);
}
SDNode *N = new StoreSDNode(Ops, VTs, ISD::UNINDEXED, false,
VT, SV, SVOffset, Alignment, isVolatile);
CSEMap.InsertNode(N, IP);
@ -1678,7 +1685,7 @@ SDOperand SelectionDAG::getStore(SDOperand Chain, SDOperand Val,
SDOperand SelectionDAG::getTruncStore(SDOperand Chain, SDOperand Val,
SDOperand Ptr, const Value *SV,
int SVOffset, MVT::ValueType SVT,
bool isVolatile) {
bool isVolatile, unsigned Alignment) {
MVT::ValueType VT = Val.getValueType();
bool isTrunc = VT != SVT;
@ -1686,8 +1693,6 @@ SDOperand SelectionDAG::getTruncStore(SDOperand Chain, SDOperand Val,
assert(MVT::isInteger(VT) == MVT::isInteger(SVT) &&
"Can't do FP-INT conversion!");
// FIXME: Alignment == 1 for now.
unsigned Alignment = 1;
SDVTList VTs = getVTList(MVT::Other);
SDOperand Undef = getNode(ISD::UNDEF, Ptr.getValueType());
SDOperand Ops[] = { Chain, Val, Ptr, Undef };
@ -1703,6 +1708,10 @@ SDOperand SelectionDAG::getTruncStore(SDOperand Chain, SDOperand Val,
void *IP = 0;
if (SDNode *E = CSEMap.FindNodeOrInsertPos(ID, IP))
return SDOperand(E, 0);
if (Alignment == 0) { // Ensure that codegen never sees alignment 0
const Type *Ty = MVT::getTypeForValueType(VT);
Alignment = TLI.getTargetData()->getABITypeAlignment(Ty);
}
SDNode *N = new StoreSDNode(Ops, VTs, ISD::UNINDEXED, isTrunc,
SVT, SV, SVOffset, Alignment, isVolatile);
CSEMap.InsertNode(N, IP);

12
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -498,7 +498,7 @@ public:
SDOperand getLoadFrom(const Type *Ty, SDOperand Ptr,
const Value *SV, SDOperand Root,
bool isVolatile);
bool isVolatile, unsigned Alignment);
SDOperand getIntPtrConstant(uint64_t Val) {
return DAG.getConstant(Val, TLI.getPointerTy());
@ -2313,19 +2313,21 @@ void SelectionDAGLowering::visitLoad(LoadInst &I) {
}
setValue(&I, getLoadFrom(I.getType(), Ptr, I.getOperand(0),
Root, I.isVolatile()));
Root, I.isVolatile(), I.getAlignment()));
}
SDOperand SelectionDAGLowering::getLoadFrom(const Type *Ty, SDOperand Ptr,
const Value *SV, SDOperand Root,
bool isVolatile) {
bool isVolatile,
unsigned Alignment) {
SDOperand L;
if (const VectorType *PTy = dyn_cast<VectorType>(Ty)) {
MVT::ValueType PVT = TLI.getValueType(PTy->getElementType());
L = DAG.getVecLoad(PTy->getNumElements(), PVT, Root, Ptr,
DAG.getSrcValue(SV));
} else {
L = DAG.getLoad(TLI.getValueType(Ty), Root, Ptr, SV, 0, isVolatile);
L = DAG.getLoad(TLI.getValueType(Ty), Root, Ptr, SV, 0,
isVolatile, Alignment);
}
if (isVolatile)
@ -2342,7 +2344,7 @@ void SelectionDAGLowering::visitStore(StoreInst &I) {
SDOperand Src = getValue(SrcV);
SDOperand Ptr = getValue(I.getOperand(1));
DAG.setRoot(DAG.getStore(getRoot(), Src, Ptr, I.getOperand(1), 0,
I.isVolatile()));
I.isVolatile(), I.getAlignment()));
}
/// IntrinsicCannotAccessMemory - Return true if the specified intrinsic cannot

7
lib/VMCore/AsmWriter.cpp
View File

@ -1307,6 +1307,13 @@ void AssemblyWriter::printInstruction(const Instruction &I) {
writeOperand(I.getOperand(i), PrintAllTypes);
}
}
// Print post operand alignment for load/store
if (isa<LoadInst>(I) && cast<LoadInst>(I).getAlignment()) {
Out << ", align " << cast<LoadInst>(I).getAlignment();
} else if (isa<StoreInst>(I) && cast<StoreInst>(I).getAlignment()) {
Out << ", align " << cast<StoreInst>(I).getAlignment();
}
printInfoComment(I);
Out << "\n";

42
lib/VMCore/Instructions.cpp
View File

@ -20,6 +20,7 @@
#include "llvm/ParameterAttributes.h"
#include "llvm/Support/CallSite.h"
#include "llvm/Support/ConstantRange.h"
#include "llvm/Support/MathExtras.h"
using namespace llvm;
unsigned CallSite::getCallingConv() const {
@ -685,6 +686,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(false);
setAlignment(0);
AssertOK();
setName(Name);
}
@ -693,6 +695,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(false);
setAlignment(0);
AssertOK();
setName(Name);
}
@ -702,6 +705,17 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
setName(Name);
}
LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
unsigned Align, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
setName(Name);
}
@ -711,6 +725,7 @@ LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
setName(Name);
}
@ -721,6 +736,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, Instruction *InsertBef)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(false);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
@ -729,6 +745,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, BasicBlock *InsertAE)
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(false);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
@ -738,6 +755,7 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertBef) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
@ -747,10 +765,15 @@ LoadInst::LoadInst(Value *Ptr, const char *Name, bool isVolatile,
: UnaryInstruction(cast<PointerType>(Ptr->getType())->getElementType(),
Load, Ptr, InsertAE) {
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
if (Name && Name[0]) setName(Name);
}
void LoadInst::setAlignment(unsigned Align) {
assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
}
//===----------------------------------------------------------------------===//
// StoreInst Implementation
@ -770,6 +793,7 @@ StoreInst::StoreInst(Value *val, Value *addr, Instruction *InsertBefore)
Ops[0].init(val, this);
Ops[1].init(addr, this);
setVolatile(false);
setAlignment(0);
AssertOK();
}
@ -778,6 +802,7 @@ StoreInst::StoreInst(Value *val, Value *addr, BasicBlock *InsertAtEnd)
Ops[0].init(val, this);
Ops[1].init(addr, this);
setVolatile(false);
setAlignment(0);
AssertOK();
}
@ -787,6 +812,17 @@ StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
Ops[0].init(val, this);
Ops[1].init(addr, this);
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
}
StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
unsigned Align, Instruction *InsertBefore)
: Instruction(Type::VoidTy, Store, Ops, 2, InsertBefore) {
Ops[0].init(val, this);
Ops[1].init(addr, this);
setVolatile(isVolatile);
setAlignment(Align);
AssertOK();
}
@ -796,9 +832,15 @@ StoreInst::StoreInst(Value *val, Value *addr, bool isVolatile,
Ops[0].init(val, this);
Ops[1].init(addr, this);
setVolatile(isVolatile);
setAlignment(0);
AssertOK();
}
void StoreInst::setAlignment(unsigned Align) {
assert((Align & (Align-1)) == 0 && "Alignment is not a power of 2!");
SubclassData = (SubclassData & 1) | ((Log2_32(Align)+1)<<1);
}
//===----------------------------------------------------------------------===//
// GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//

7
test/Assembler/2007-04-20-AlignedLoad.ll Normal file
View File

@ -0,0 +1,7 @@
; RUN: llvm-as < %s |& llvm-dis |& grep 'align 1024'
define i32 @test(i32* %arg) {
entry:
%tmp2 = load i32* %arg, align 1024 ; <i32> [#uses=1]
ret i32 %tmp2
}

7
test/Assembler/2007-04-20-AlignedStore.ll Normal file
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@ -0,0 +1,7 @@
; RUN: llvm-as < %s |& llvm-dis | grep 'align 1024'
define void @test(i32* %arg) {
entry:
store i32 0, i32* %arg, align 1024
ret void
}