Index: src/IceTargetLoweringX8632.h |
diff --git a/src/IceTargetLoweringX8632.h b/src/IceTargetLoweringX8632.h |
index bb57740bf0f07ff249cb92008049eee8625b60a3..b0a654d0f85096f79b6a7c22bd6313f764133f3d 100644 |
--- a/src/IceTargetLoweringX8632.h |
+++ b/src/IceTargetLoweringX8632.h |
@@ -247,6 +247,7 @@ protected: |
// Mark eax as possibly modified by cmpxchg. |
Context.insert( |
InstFakeDef::create(Func, Eax, llvm::dyn_cast<Variable>(DestOrAddr))); |
+ _set_dest_nonkillable(); |
} |
void _cmpxchg8b(OperandX8632Mem *Addr, Variable *Edx, Variable *Eax, |
Variable *Ecx, Variable *Ebx, bool Locked) { |
@@ -254,7 +255,9 @@ protected: |
InstX8632Cmpxchg8b::create(Func, Addr, Edx, Eax, Ecx, Ebx, Locked)); |
// Mark edx, and eax as possibly modified by cmpxchg8b. |
Context.insert(InstFakeDef::create(Func, Edx)); |
+ _set_dest_nonkillable(); |
Context.insert(InstFakeDef::create(Func, Eax)); |
+ _set_dest_nonkillable(); |
} |
void _cvt(Variable *Dest, Operand *Src0, InstX8632Cvt::CvtVariant Variant) { |
Context.insert(InstX8632Cvt::create(Func, Dest, Src0, Variant)); |
@@ -294,6 +297,11 @@ protected: |
Dest = makeReg(Src0->getType(), RegNum); |
Context.insert(InstX8632Mov::create(Func, Dest, Src0)); |
} |
+ void _mov_nonkillable(Variable *Dest, Operand *Src0) { |
+ Inst *NewInst = InstX8632Mov::create(Func, Dest, Src0); |
+ NewInst->setDestNonKillable(); |
+ Context.insert(NewInst); |
+ } |
void _movd(Variable *Dest, Operand *Src0) { |
Context.insert(InstX8632Movd::create(Func, Dest, Src0)); |
} |
@@ -445,16 +453,21 @@ protected: |
// Model that update with a FakeDef. |
Context.insert( |
InstFakeDef::create(Func, Src, llvm::dyn_cast<Variable>(Dest))); |
+ _set_dest_nonkillable(); |
} |
void _xchg(Operand *Dest, Variable *Src) { |
Context.insert(InstX8632Xchg::create(Func, Dest, Src)); |
// The xchg modifies Dest and Src -- model that update with a FakeDef. |
Context.insert( |
InstFakeDef::create(Func, Src, llvm::dyn_cast<Variable>(Dest))); |
+ _set_dest_nonkillable(); |
} |
void _xor(Variable *Dest, Operand *Src0) { |
Context.insert(InstX8632Xor::create(Func, Dest, Src0)); |
} |
+ void _set_dest_nonkillable() { |
+ Context.getLastInserted()->setDestNonKillable(); |
+ } |
const X86InstructionSet InstructionSet; |
bool IsEbpBasedFrame; |