diff options
| -rw-r--r-- | llvm/lib/Target/X86/InstSelectSimple.cpp | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/llvm/lib/Target/X86/InstSelectSimple.cpp b/llvm/lib/Target/X86/InstSelectSimple.cpp index b7796647d33..369b203e614 100644 --- a/llvm/lib/Target/X86/InstSelectSimple.cpp +++ b/llvm/lib/Target/X86/InstSelectSimple.cpp @@ -1101,18 +1101,31 @@ void ISel::doCall(const ValueRecord &Ret, MachineInstr *CallMI, unsigned ArgReg; switch (getClassB(Args[i].Ty)) { case cByte: - case cShort: { - // Promote arg to 32 bits wide into a temporary register... - unsigned R = makeAnotherReg(Type::UIntTy); - promote32(R, Args[i]); - addRegOffset(BuildMI(BB, X86::MOV32mr, 5), - X86::ESP, ArgOffset).addReg(R); + case cShort: + if (Args[i].Val && isa<ConstantInt>(Args[i].Val)) { + // Zero/Sign extend constant, then stuff into memory. + ConstantInt *Val = cast<ConstantInt>(Args[i].Val); + Val = cast<ConstantInt>(ConstantExpr::getCast(Val, Type::IntTy)); + addRegOffset(BuildMI(BB, X86::MOV32mi, 5), X86::ESP, ArgOffset) + .addImm(Val->getRawValue() & 0xFFFFFFFF); + } else { + // Promote arg to 32 bits wide into a temporary register... + ArgReg = makeAnotherReg(Type::UIntTy); + promote32(ArgReg, Args[i]); + addRegOffset(BuildMI(BB, X86::MOV32mr, 5), + X86::ESP, ArgOffset).addReg(ArgReg); + } break; - } case cInt: - ArgReg = Args[i].Val ? getReg(Args[i].Val) : Args[i].Reg; - addRegOffset(BuildMI(BB, X86::MOV32mr, 5), - X86::ESP, ArgOffset).addReg(ArgReg); + if (Args[i].Val && isa<ConstantInt>(Args[i].Val)) { + unsigned Val = cast<ConstantInt>(Args[i].Val)->getRawValue(); + addRegOffset(BuildMI(BB, X86::MOV32mi, 5), + X86::ESP, ArgOffset).addImm(Val); + } else { + ArgReg = Args[i].Val ? getReg(Args[i].Val) : Args[i].Reg; + addRegOffset(BuildMI(BB, X86::MOV32mr, 5), + X86::ESP, ArgOffset).addReg(ArgReg); + } break; case cLong: ArgReg = Args[i].Val ? getReg(Args[i].Val) : Args[i].Reg; |
