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We need to sext global addresses in kernel code model, not zext

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78299 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2009-08-06 11:23:24 +00:00
parent aae317ac32
commit d7697d0167
2 changed files with 24 additions and 11 deletions
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27
lib/Target/X86/X86Instr64bit.td
View File

@ -1478,13 +1478,13 @@ def ATOMUMAX64: I<0, Pseudo, (outs GR64:$dst),(ins i64mem:$ptr, GR64:$val),
// code model mode, should use 'movabs'. FIXME: This is really a hack, the
// 'movabs' predicate should handle this sort of thing.
def : Pat<(i64 (X86Wrapper tconstpool :$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:$dst)>, Requires<[FarData]>;
// In static codegen with small code model, we can get the address of a label
// into a register with 'movl'. FIXME: This is a hack, the 'imm' predicate of
@ -1498,22 +1498,33 @@ def : Pat<(i64 (X86Wrapper tglobaladdr :$dst)),
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

8
lib/Target/X86/X86InstrInfo.td
View File

@ -253,10 +253,12 @@ def In32BitMode : Predicate<"!Subtarget->is64Bit()">;
def In64BitMode : Predicate<"Subtarget->is64Bit()">;
def IsWin64 : Predicate<"Subtarget->isTargetWin64()">;
def NotWin64 : Predicate<"!Subtarget->isTargetWin64()">;
def SmallCode : Predicate<"TM.getCodeModel() == CodeModel::Small ||"
"TM.getCodeModel() == CodeModel::Kernel">;
def NotSmallCode : Predicate<"TM.getCodeModel() != CodeModel::Small &&"
def SmallCode : Predicate<"TM.getCodeModel() == CodeModel::Small">;
def KernelCode : Predicate<"TM.getCodeModel() == CodeModel::Kernel">;
def FarData : Predicate<"TM.getCodeModel() != CodeModel::Small &&"
"TM.getCodeModel() != CodeModel::Kernel">;
def NearData : Predicate<"TM.getCodeModel() == CodeModel::Small ||"
"TM.getCodeModel() == CodeModel::Kernel">;
def IsStatic : Predicate<"TM.getRelocationModel() == Reloc::Static">;
def OptForSpeed : Predicate<"!OptForSize">;
def FastBTMem : Predicate<"!Subtarget->isBTMemSlow()">;