// 64-bits but only 32 bits are significant.
def i64i32imm : Operand<i64>;
+
+// 64-bits but only 32 bits are significant, and those bits are treated as being
+// pc relative.
+def i64i32imm_pcrel : Operand<i64> {
+ let PrintMethod = "print_pcrel_imm";
+}
+
+
// 64-bits but only 8 bits are significant.
-def i64i8imm : Operand<i64>;
+def i64i8imm : Operand<i64> {
+ let ParserMatchClass = ImmSExt8AsmOperand;
+}
def lea64mem : Operand<i64> {
let PrintMethod = "printlea64mem";
- let MIOperandInfo = (ops GR64, i8imm, GR64, i32imm);
+ let MIOperandInfo = (ops GR64, i8imm, GR64_NOSP, i32imm);
+ let ParserMatchClass = X86MemAsmOperand;
}
def lea64_32mem : Operand<i32> {
let PrintMethod = "printlea64_32mem";
- let MIOperandInfo = (ops GR32, i8imm, GR32, i32imm);
+ let AsmOperandLowerMethod = "lower_lea64_32mem";
+ let MIOperandInfo = (ops GR32, i8imm, GR32_NOSP, i32imm);
+ let ParserMatchClass = X86MemAsmOperand;
}
//===----------------------------------------------------------------------===//
// Complex Pattern Definitions.
//
def lea64addr : ComplexPattern<i64, 4, "SelectLEAAddr",
- [add, mul, X86mul_imm, shl, or, frameindex, X86Wrapper],
- []>;
+ [add, sub, mul, X86mul_imm, shl, or, frameindex,
+ X86WrapperRIP], []>;
+
+def tls64addr : ComplexPattern<i64, 4, "SelectTLSADDRAddr",
+ [tglobaltlsaddr], []>;
//===----------------------------------------------------------------------===//
// Pattern fragments.
// NOTE: this pattern doesn't match "X86call imm", because we do not know
// that the offset between an arbitrary immediate and the call will fit in
// the 32-bit pcrel field that we have.
- def CALL64pcrel32 : I<0xE8, RawFrm,
- (outs), (ins i64i32imm:$dst, variable_ops),
- "call\t${dst:call}", []>,
- Requires<[In64BitMode]>;
+ def CALL64pcrel32 : Ii32<0xE8, RawFrm,
+ (outs), (ins i64i32imm_pcrel:$dst, variable_ops),
+ "call\t$dst", []>,
+ Requires<[In64BitMode, NotWin64]>;
def CALL64r : I<0xFF, MRM2r, (outs), (ins GR64:$dst, variable_ops),
- "call\t{*}$dst", [(X86call GR64:$dst)]>;
+ "call\t{*}$dst", [(X86call GR64:$dst)]>,
+ Requires<[NotWin64]>;
def CALL64m : I<0xFF, MRM2m, (outs), (ins i64mem:$dst, variable_ops),
- "call\t{*}$dst", [(X86call (loadi64 addr:$dst))]>;
+ "call\t{*}$dst", [(X86call (loadi64 addr:$dst))]>,
+ Requires<[NotWin64]>;
+
+ def FARCALL64 : RI<0xFF, MRM3m, (outs), (ins opaque80mem:$dst),
+ "lcall{q}\t{*}$dst", []>;
}
+ // FIXME: We need to teach codegen about single list of call-clobbered registers.
+let isCall = 1 in
+ // All calls clobber the non-callee saved registers. RSP is marked as
+ // a use to prevent stack-pointer assignments that appear immediately
+ // before calls from potentially appearing dead. Uses for argument
+ // registers are added manually.
+ let Defs = [RAX, RCX, RDX, R8, R9, R10, R11,
+ FP0, FP1, FP2, FP3, FP4, FP5, FP6, ST0, ST1,
+ MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7,
+ XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, EFLAGS],
+ Uses = [RSP] in {
+ def WINCALL64pcrel32 : I<0xE8, RawFrm,
+ (outs), (ins i64i32imm_pcrel:$dst, variable_ops),
+ "call\t$dst", []>,
+ Requires<[IsWin64]>;
+ def WINCALL64r : I<0xFF, MRM2r, (outs), (ins GR64:$dst, variable_ops),
+ "call\t{*}$dst",
+ [(X86call GR64:$dst)]>, Requires<[IsWin64]>;
+ def WINCALL64m : I<0xFF, MRM2m, (outs), (ins i64mem:$dst, variable_ops),
+ "call\t{*}$dst",
+ [(X86call (loadi64 addr:$dst))]>, Requires<[IsWin64]>;
+ }
let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in
[(brind GR64:$dst)]>;
def JMP64m : I<0xFF, MRM4m, (outs), (ins i64mem:$dst), "jmp{q}\t{*}$dst",
[(brind (loadi64 addr:$dst))]>;
+ def FARJMP64 : RI<0xFF, MRM5m, (outs), (ins opaque80mem:$dst),
+ "ljmp{q}\t{*}$dst", []>;
}
//===----------------------------------------------------------------------===//
def LEAVE64 : I<0xC9, RawFrm,
(outs), (ins), "leave", []>;
let Defs = [RSP], Uses = [RSP], neverHasSideEffects=1 in {
-let mayLoad = 1 in
+let mayLoad = 1 in {
def POP64r : I<0x58, AddRegFrm,
(outs GR64:$reg), (ins), "pop{q}\t$reg", []>;
-let mayStore = 1 in
+def POP64rmr: I<0x8F, MRM0r, (outs GR64:$reg), (ins), "pop{q}\t$reg", []>;
+def POP64rmm: I<0x8F, MRM0m, (outs i64mem:$dst), (ins), "pop{q}\t$dst", []>;
+}
+let mayStore = 1 in {
def PUSH64r : I<0x50, AddRegFrm,
(outs), (ins GR64:$reg), "push{q}\t$reg", []>;
+def PUSH64rmr: I<0xFF, MRM6r, (outs), (ins GR64:$reg), "push{q}\t$reg", []>;
+def PUSH64rmm: I<0xFF, MRM6m, (outs), (ins i64mem:$src), "push{q}\t$src", []>;
+}
+}
+
+let Defs = [RSP], Uses = [RSP], neverHasSideEffects = 1, mayStore = 1 in {
+def PUSH64i8 : Ii8<0x6a, RawFrm, (outs), (ins i8imm:$imm),
+ "push{q}\t$imm", []>;
+def PUSH64i16 : Ii16<0x68, RawFrm, (outs), (ins i16imm:$imm),
+ "push{q}\t$imm", []>;
+def PUSH64i32 : Ii32<0x68, RawFrm, (outs), (ins i32imm:$imm),
+ "push{q}\t$imm", []>;
}
let Defs = [RSP, EFLAGS], Uses = [RSP], mayLoad = 1 in
def REP_STOSQ : RI<0xAB, RawFrm, (outs), (ins), "{rep;stosq|rep stosq}",
[(X86rep_stos i64)]>, REP;
+def SCAS64 : RI<0xAF, RawFrm, (outs), (ins), "scas{q}", []>;
+
+// Fast system-call instructions
+def SYSEXIT64 : RI<0x35, RawFrm,
+ (outs), (ins), "sysexit", []>, TB;
+
//===----------------------------------------------------------------------===//
// Move Instructions...
//
"mov{q}\t{$src, $dst|$dst, $src}",
[(store i64immSExt32:$src, addr:$dst)]>;
+def MOV64o8a : RIi8<0xA0, RawFrm, (outs), (ins i8imm:$src),
+ "mov{q}\t{$src, %rax|%rax, $src}", []>;
+def MOV64o32a : RIi32<0xA1, RawFrm, (outs), (ins i32imm:$src),
+ "mov{q}\t{$src, %rax|%rax, $src}", []>;
+def MOV64ao8 : RIi8<0xA2, RawFrm, (outs i8imm:$dst), (ins),
+ "mov{q}\t{%rax, $dst|$dst, %rax}", []>;
+def MOV64ao32 : RIi32<0xA3, RawFrm, (outs i32imm:$dst), (ins),
+ "mov{q}\t{%rax, $dst|$dst, %rax}", []>;
+
// Sign/Zero extenders
// MOVSX64rr8 always has a REX prefix and it has an 8-bit register
//
let Defs = [EFLAGS] in {
+
+def ADD64i32 : RI<0x05, RawFrm, (outs), (ins i32imm:$src),
+ "add{q}\t{$src, %rax|%rax, $src}", []>;
+
let isTwoAddress = 1 in {
let isConvertibleToThreeAddress = 1 in {
let isCommutable = 1 in
(implicit EFLAGS)]>;
let Uses = [EFLAGS] in {
+
+def ADC64i32 : RI<0x15, RawFrm, (outs), (ins i32imm:$src),
+ "adc{q}\t{$src, %rax|%rax, $src}", []>;
+
let isTwoAddress = 1 in {
let isCommutable = 1 in
def ADC64rr : RI<0x11, MRMDestReg, (outs GR64:$dst), (ins GR64:$src1, GR64:$src2),
(implicit EFLAGS)]>;
} // isTwoAddress
+def SUB64i32 : RI<0x2D, RawFrm, (outs), (ins i32imm:$src),
+ "sub{q}\t{$src, %rax|%rax, $src}", []>;
+
// Memory-Register Subtraction
def SUB64mr : RI<0x29, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
"sub{q}\t{$src2, $dst|$dst, $src2}",
[(set GR64:$dst, (sube GR64:$src1, i64immSExt32:$src2))]>;
} // isTwoAddress
+def SBB64i32 : RI<0x1D, RawFrm, (outs), (ins i32imm:$src),
+ "sbb{q}\t{$src, %rax|%rax, $src}", []>;
+
def SBB64mr : RI<0x19, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
"sbb{q}\t{$src2, $dst|$dst, $src2}",
[(store (sube (load addr:$dst), GR64:$src2), addr:$dst)]>;
[(store (not (loadi64 addr:$dst)), addr:$dst)]>;
let Defs = [EFLAGS] in {
+def AND64i32 : RI<0x25, RawFrm, (outs), (ins i32imm:$src),
+ "and{q}\t{$src, %rax|%rax, $src}", []>;
+
let isTwoAddress = 1 in {
let isCommutable = 1 in
def AND64rr : RI<0x21, MRMDestReg,
[(store (or (loadi64 addr:$dst), i64immSExt32:$src), addr:$dst),
(implicit EFLAGS)]>;
+def OR64i32 : RIi32<0x0D, RawFrm, (outs), (ins i32imm:$src),
+ "or{q}\t{$src, %rax|%rax, $src}", []>;
+
let isTwoAddress = 1 in {
let isCommutable = 1 in
def XOR64rr : RI<0x31, MRMDestReg, (outs GR64:$dst), (ins GR64:$src1, GR64:$src2),
"xor{q}\t{$src, $dst|$dst, $src}",
[(store (xor (loadi64 addr:$dst), i64immSExt32:$src), addr:$dst),
(implicit EFLAGS)]>;
+
+def XOR64i32 : RIi32<0x35, RawFrm, (outs), (ins i32imm:$src),
+ "xor{q}\t{$src, %rax|%rax, $src}", []>;
+
} // Defs = [EFLAGS]
//===----------------------------------------------------------------------===//
// Integer comparison
let Defs = [EFLAGS] in {
+def TEST64i32 : RI<0xa9, RawFrm, (outs), (ins i32imm:$src),
+ "test{q}\t{$src, %rax|%rax, $src}", []>;
let isCommutable = 1 in
def TEST64rr : RI<0x85, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
"test{q}\t{$src2, $src1|$src1, $src2}",
[(X86cmp (and (loadi64 addr:$src1), i64immSExt32:$src2), 0),
(implicit EFLAGS)]>;
+
+def CMP64i32 : RI<0x3D, RawFrm, (outs), (ins i32imm:$src),
+ "cmp{q}\t{$src, %rax|%rax, $src}", []>;
def CMP64rr : RI<0x39, MRMDestReg, (outs), (ins GR64:$src1, GR64:$src2),
"cmp{q}\t{$src2, $src1|$src1, $src2}",
[(X86cmp GR64:$src1, GR64:$src2),
// Alias instructions that map movr0 to xor. Use xorl instead of xorq; it's
// equivalent due to implicit zero-extending, and it sometimes has a smaller
// encoding.
-// FIXME: remove when we can teach regalloc that xor reg, reg is ok.
-// FIXME: AddedComplexity gives MOV64r0 a higher priority than MOV64ri32. Remove
+// FIXME: AddedComplexity gives this a higher priority than MOV64ri32. Remove
// when we have a better way to specify isel priority.
-let Defs = [EFLAGS], AddedComplexity = 1,
- isReMaterializable = 1, isAsCheapAsAMove = 1 in
-def MOV64r0 : I<0x31, MRMInitReg, (outs GR64:$dst), (ins),
- "xor{l}\t${dst:subreg32}, ${dst:subreg32}",
- [(set GR64:$dst, 0)]>;
+let AddedComplexity = 1 in
+def : Pat<(i64 0),
+ (SUBREG_TO_REG (i64 0), (MOV32r0), x86_subreg_32bit)>;
+
// Materialize i64 constant where top 32-bits are zero.
let AddedComplexity = 1, isReMaterializable = 1, isAsCheapAsAMove = 1 in
XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15, EFLAGS],
Uses = [RSP] in
-def TLS_addr64 : I<0, Pseudo, (outs), (ins i64imm:$sym),
+def TLS_addr64 : I<0, Pseudo, (outs), (ins lea64mem:$sym),
".byte\t0x66; "
- "leaq\t${sym:mem}(%rip), %rdi; "
+ "leaq\t$sym(%rip), %rdi; "
".word\t0x6666; "
"rex64; "
"call\t__tls_get_addr@PLT",
- [(X86tlsaddr tglobaltlsaddr:$sym)]>,
+ [(X86tlsaddr tls64addr:$sym)]>,
Requires<[In64BitMode]>;
-let AddedComplexity = 5 in
+let AddedComplexity = 5, isCodeGenOnly = 1 in
def MOV64GSrm : RI<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
"movq\t%gs:$src, $dst",
[(set GR64:$dst, (gsload addr:$src))]>, SegGS;
-let AddedComplexity = 5 in
+let AddedComplexity = 5, isCodeGenOnly = 1 in
def MOV64FSrm : RI<0x8B, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$src),
"movq\t%fs:$src, $dst",
[(set GR64:$dst, (fsload addr:$src))]>, SegFS;
"xadd\t$val, $ptr",
[(set GR64:$dst, (atomic_load_add_64 addr:$ptr, GR64:$val))]>,
TB, LOCK;
+
def XCHG64rm : RI<0x87, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$ptr,GR64:$val),
"xchg\t$val, $ptr",
[(set GR64:$dst, (atomic_swap_64 addr:$ptr, GR64:$val))]>;
}
+// Optimized codegen when the non-memory output is not used.
+// FIXME: Use normal add / sub instructions and add lock prefix dynamically.
+def LOCK_ADD64mr : RI<0x03, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
+ "lock\n\t"
+ "add{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_ADD64mi8 : RIi8<0x83, MRM0m, (outs),
+ (ins i64mem:$dst, i64i8imm :$src2),
+ "lock\n\t"
+ "add{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_ADD64mi32 : RIi32<0x81, MRM0m, (outs),
+ (ins i64mem:$dst, i64i32imm :$src2),
+ "lock\n\t"
+ "add{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_SUB64mr : RI<0x29, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
+ "lock\n\t"
+ "sub{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_SUB64mi8 : RIi8<0x83, MRM5m, (outs),
+ (ins i64mem:$dst, i64i8imm :$src2),
+ "lock\n\t"
+ "sub{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_SUB64mi32 : RIi32<0x81, MRM5m, (outs),
+ (ins i64mem:$dst, i64i32imm:$src2),
+ "lock\n\t"
+ "sub{q}\t{$src2, $dst|$dst, $src2}", []>, LOCK;
+def LOCK_INC64m : RI<0xFF, MRM0m, (outs), (ins i64mem:$dst),
+ "lock\n\t"
+ "inc{q}\t$dst", []>, LOCK;
+def LOCK_DEC64m : RI<0xFF, MRM1m, (outs), (ins i64mem:$dst),
+ "lock\n\t"
+ "dec{q}\t$dst", []>, LOCK;
+
// Atomic exchange, and, or, xor
let Constraints = "$val = $dst", Defs = [EFLAGS],
usesCustomDAGSchedInserter = 1 in {
// Non-Instruction Patterns
//===----------------------------------------------------------------------===//
-// ConstantPool GlobalAddress, ExternalSymbol, and JumpTable
+// ConstantPool GlobalAddress, ExternalSymbol, and JumpTable when not in small
+// code model mode, should use 'movabs'. FIXME: This is really a hack, the
+// 'movabs' predicate should handle this sort of thing.
def : Pat<(i64 (X86Wrapper tconstpool :$dst)),
- (MOV64ri tconstpool :$dst)>, Requires<[NotSmallCode]>;
+ (MOV64ri tconstpool :$dst)>, Requires<[FarData]>;
def : Pat<(i64 (X86Wrapper tjumptable :$dst)),
- (MOV64ri tjumptable :$dst)>, Requires<[NotSmallCode]>;
+ (MOV64ri tjumptable :$dst)>, Requires<[FarData]>;
def : Pat<(i64 (X86Wrapper tglobaladdr :$dst)),
- (MOV64ri tglobaladdr :$dst)>, Requires<[NotSmallCode]>;
+ (MOV64ri tglobaladdr :$dst)>, Requires<[FarData]>;
def : Pat<(i64 (X86Wrapper texternalsym:$dst)),
- (MOV64ri texternalsym:$dst)>, Requires<[NotSmallCode]>;
+ (MOV64ri texternalsym:$dst)>, Requires<[FarData]>;
+// In static codegen with small code model, we can get the address of a label
+// into a register with 'movl'. FIXME: This is a hack, the 'imm' predicate of
+// the MOV64ri64i32 should accept these.
+def : Pat<(i64 (X86Wrapper tconstpool :$dst)),
+ (MOV64ri64i32 tconstpool :$dst)>, Requires<[SmallCode]>;
+def : Pat<(i64 (X86Wrapper tjumptable :$dst)),
+ (MOV64ri64i32 tjumptable :$dst)>, Requires<[SmallCode]>;
+def : Pat<(i64 (X86Wrapper tglobaladdr :$dst)),
+ (MOV64ri64i32 tglobaladdr :$dst)>, Requires<[SmallCode]>;
+def : Pat<(i64 (X86Wrapper texternalsym:$dst)),
+ (MOV64ri64i32 texternalsym:$dst)>, Requires<[SmallCode]>;
+
+// In kernel code model, we can get the address of a label
+// into a register with 'movq'. FIXME: This is a hack, the 'imm' predicate of
+// the MOV64ri32 should accept these.
+def : Pat<(i64 (X86Wrapper tconstpool :$dst)),
+ (MOV64ri32 tconstpool :$dst)>, Requires<[KernelCode]>;
+def : Pat<(i64 (X86Wrapper tjumptable :$dst)),
+ (MOV64ri32 tjumptable :$dst)>, Requires<[KernelCode]>;
+def : Pat<(i64 (X86Wrapper tglobaladdr :$dst)),
+ (MOV64ri32 tglobaladdr :$dst)>, Requires<[KernelCode]>;
+def : Pat<(i64 (X86Wrapper texternalsym:$dst)),
+ (MOV64ri32 texternalsym:$dst)>, Requires<[KernelCode]>;
+
+// If we have small model and -static mode, it is safe to store global addresses
+// directly as immediates. FIXME: This is really a hack, the 'imm' predicate
+// for MOV64mi32 should handle this sort of thing.
def : Pat<(store (i64 (X86Wrapper tconstpool:$src)), addr:$dst),
(MOV64mi32 addr:$dst, tconstpool:$src)>,
- Requires<[SmallCode, IsStatic]>;
+ Requires<[NearData, IsStatic]>;
def : Pat<(store (i64 (X86Wrapper tjumptable:$src)), addr:$dst),
(MOV64mi32 addr:$dst, tjumptable:$src)>,
- Requires<[SmallCode, IsStatic]>;
+ Requires<[NearData, IsStatic]>;
def : Pat<(store (i64 (X86Wrapper tglobaladdr:$src)), addr:$dst),
(MOV64mi32 addr:$dst, tglobaladdr:$src)>,
- Requires<[SmallCode, IsStatic]>;
+ Requires<[NearData, IsStatic]>;
def : Pat<(store (i64 (X86Wrapper texternalsym:$src)), addr:$dst),
(MOV64mi32 addr:$dst, texternalsym:$src)>,
- Requires<[SmallCode, IsStatic]>;
+ Requires<[NearData, IsStatic]>;
// Calls
// Direct PC relative function call for small code model. 32-bit displacement
// sign extended to 64-bit.
def : Pat<(X86call (i64 tglobaladdr:$dst)),
- (CALL64pcrel32 tglobaladdr:$dst)>;
+ (CALL64pcrel32 tglobaladdr:$dst)>, Requires<[NotWin64]>;
def : Pat<(X86call (i64 texternalsym:$dst)),
- (CALL64pcrel32 texternalsym:$dst)>;
-
-def : Pat<(X86tailcall (i64 tglobaladdr:$dst)),
- (CALL64pcrel32 tglobaladdr:$dst)>;
-def : Pat<(X86tailcall (i64 texternalsym:$dst)),
- (CALL64pcrel32 texternalsym:$dst)>;
-
-def : Pat<(X86tailcall GR64:$dst),
- (CALL64r GR64:$dst)>;
+ (CALL64pcrel32 texternalsym:$dst)>, Requires<[NotWin64]>;
+def : Pat<(X86call (i64 tglobaladdr:$dst)),
+ (WINCALL64pcrel32 tglobaladdr:$dst)>, Requires<[IsWin64]>;
+def : Pat<(X86call (i64 texternalsym:$dst)),
+ (WINCALL64pcrel32 texternalsym:$dst)>, Requires<[IsWin64]>;
// tailcall stuff
-def : Pat<(X86tailcall GR32:$dst),
- (TAILCALL)>;
-def : Pat<(X86tailcall (i64 tglobaladdr:$dst)),
- (TAILCALL)>;
-def : Pat<(X86tailcall (i64 texternalsym:$dst)),
- (TAILCALL)>;
-
def : Pat<(X86tcret GR64:$dst, imm:$off),
(TCRETURNri64 GR64:$dst, imm:$off)>;
// For other extloads, use subregs, since the high contents of the register are
// defined after an extload.
def : Pat<(extloadi64i32 addr:$src),
- (INSERT_SUBREG (i64 (IMPLICIT_DEF)), (MOV32rm addr:$src),
+ (SUBREG_TO_REG (i64 0), (MOV32rm addr:$src),
x86_subreg_32bit)>;
-def : Pat<(extloadi16i1 addr:$src),
- (INSERT_SUBREG (i16 (IMPLICIT_DEF)), (MOV8rm addr:$src),
- x86_subreg_8bit)>,
- Requires<[In64BitMode]>;
-def : Pat<(extloadi16i8 addr:$src),
- (INSERT_SUBREG (i16 (IMPLICIT_DEF)), (MOV8rm addr:$src),
- x86_subreg_8bit)>,
- Requires<[In64BitMode]>;
-
-// anyext
-def : Pat<(i64 (anyext GR8:$src)),
- (INSERT_SUBREG (i64 (IMPLICIT_DEF)), GR8:$src, x86_subreg_8bit)>;
-def : Pat<(i64 (anyext GR16:$src)),
- (INSERT_SUBREG (i64 (IMPLICIT_DEF)), GR16:$src, x86_subreg_16bit)>;
-def : Pat<(i64 (anyext GR32:$src)),
- (INSERT_SUBREG (i64 (IMPLICIT_DEF)), GR32:$src, x86_subreg_32bit)>;
-def : Pat<(i16 (anyext GR8:$src)),
- (INSERT_SUBREG (i16 (IMPLICIT_DEF)), GR8:$src, x86_subreg_8bit)>,
- Requires<[In64BitMode]>;
-def : Pat<(i32 (anyext GR8:$src)),
- (INSERT_SUBREG (i32 (IMPLICIT_DEF)), GR8:$src, x86_subreg_8bit)>,
- Requires<[In64BitMode]>;
+
+// anyext. Define these to do an explicit zero-extend to
+// avoid partial-register updates.
+def : Pat<(i64 (anyext GR8 :$src)), (MOVZX64rr8 GR8 :$src)>;
+def : Pat<(i64 (anyext GR16:$src)), (MOVZX64rr16 GR16 :$src)>;
+def : Pat<(i64 (anyext GR32:$src)),
+ (SUBREG_TO_REG (i64 0), GR32:$src, x86_subreg_32bit)>;
//===----------------------------------------------------------------------===//
// Some peepholes
Requires<[In64BitMode]>;
// h-register tricks.
-// For now, be conservative and only the extract if the value is immediately
-// zero-extended or stored, which are somewhat common cases. This uses a bunch
-// of code to prevent a register requiring a REX prefix from being allocated in
-// the same instruction as the h register, as there's currently no way to
-// describe this requirement to the register allocator.
+// For now, be conservative on x86-64 and use an h-register extract only if the
+// value is immediately zero-extended or stored, which are somewhat common
+// cases. This uses a bunch of code to prevent a register requiring a REX prefix
+// from being allocated in the same instruction as the h register, as there's
+// currently no way to describe this requirement to the register allocator.
// h-register extract and zero-extend.
def : Pat<(and (srl_su GR64:$src, (i8 8)), (i64 255)),
x86_subreg_8bit_hi)),
x86_subreg_16bit)>,
Requires<[In64BitMode]>;
+def : Pat<(i32 (zext (srl_su GR16:$src, (i8 8)))),
+ (MOVZX32_NOREXrr8
+ (EXTRACT_SUBREG (COPY_TO_REGCLASS GR16:$src, GR16_ABCD),
+ x86_subreg_8bit_hi))>,
+ Requires<[In64BitMode]>;
+def : Pat<(i32 (anyext (srl_su GR16:$src, (i8 8)))),
+ (MOVZX32_NOREXrr8
+ (EXTRACT_SUBREG (COPY_TO_REGCLASS GR16:$src, GR16_ABCD),
+ x86_subreg_8bit_hi))>,
+ Requires<[In64BitMode]>;
+def : Pat<(i64 (zext (srl_su GR16:$src, (i8 8)))),
+ (SUBREG_TO_REG
+ (i64 0),
+ (MOVZX32_NOREXrr8
+ (EXTRACT_SUBREG (COPY_TO_REGCLASS GR16:$src, GR16_ABCD),
+ x86_subreg_8bit_hi)),
+ x86_subreg_32bit)>;
+def : Pat<(i64 (anyext (srl_su GR16:$src, (i8 8)))),
+ (SUBREG_TO_REG
+ (i64 0),
+ (MOVZX32_NOREXrr8
+ (EXTRACT_SUBREG (COPY_TO_REGCLASS GR16:$src, GR16_ABCD),
+ x86_subreg_8bit_hi)),
+ x86_subreg_32bit)>;
// h-register extract and store.
def : Pat<(store (i8 (trunc_su (srl_su GR64:$src, (i8 8)))), addr:$dst),
}
defm PINSRQ : SS41I_insert64<0x22, "pinsrq">;
+
+// -disable-16bit support.
+def : Pat<(truncstorei16 (i64 imm:$src), addr:$dst),
+ (MOV16mi addr:$dst, imm:$src)>;
+def : Pat<(truncstorei16 GR64:$src, addr:$dst),
+ (MOV16mr addr:$dst, (EXTRACT_SUBREG GR64:$src, x86_subreg_16bit))>;
+def : Pat<(i64 (sextloadi16 addr:$dst)),
+ (MOVSX64rm16 addr:$dst)>;
+def : Pat<(i64 (zextloadi16 addr:$dst)),
+ (MOVZX64rm16 addr:$dst)>;
+def : Pat<(i64 (extloadi16 addr:$dst)),
+ (MOVZX64rm16 addr:$dst)>;
projects / oota-llvm.git / blobdiff