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Implement indirect function calls

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5024 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-13 14:13:27 +00:00
parent b8ead9dc22
commit 6e49a4b814
3 changed files with 20 additions and 4 deletions
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10
lib/Target/X86/InstSelectSimple.cpp
View File

@ -577,8 +577,14 @@ ISel::visitCallInst (CallInst & CI)
break;
}
}
// Emit a CALL instruction with PC-relative displacement.
BuildMI (BB, X86::CALLpcrel32, 1).addPCDisp (CI.getCalledValue ());
if (Function *F = CI.getCalledFunction()) {
// Emit a CALL instruction with PC-relative displacement.
BuildMI(BB, X86::CALLpcrel32, 1).addPCDisp(F);
} else {
unsigned Reg = getReg(CI.getCalledValue());
BuildMI(BB, X86::CALLr32, 1).addReg(Reg);
}
// Adjust the stack by `bytesPushed' amount if non-zero
if (bytesPushed > 0)

10
lib/Target/X86/X86ISelSimple.cpp
View File

@ -577,8 +577,14 @@ ISel::visitCallInst (CallInst & CI)
break;
}
}
// Emit a CALL instruction with PC-relative displacement.
BuildMI (BB, X86::CALLpcrel32, 1).addPCDisp (CI.getCalledValue ());
if (Function *F = CI.getCalledFunction()) {
// Emit a CALL instruction with PC-relative displacement.
BuildMI(BB, X86::CALLpcrel32, 1).addPCDisp(F);
} else {
unsigned Reg = getReg(CI.getCalledValue());
BuildMI(BB, X86::CALLr32, 1).addReg(Reg);
}
// Adjust the stack by `bytesPushed' amount if non-zero
if (bytesPushed > 0)

4
lib/Target/X86/X86InstrInfo.def
View File

@ -66,6 +66,10 @@ I(JNE , "jne", 0x85, M_BRANCH_FLAG, X86II::RawFrm | X86II::TB | X86II:
I(JE , "je", 0x84, M_BRANCH_FLAG, X86II::RawFrm | X86II::TB | X86II::Void, NoIR,
NoIR) // je foo
I(CALLpcrel32 , "call", 0xE8, M_BRANCH_FLAG, X86II::Void, NoIR, NoIR) // call pc+42
I(CALLr32 , "call", 0xFF, M_BRANCH_FLAG, X86II::Void | X86II::MRMS2r | X86II::Arg32,
NoIR, NoIR) // call [r32]
I(CALLm32 , "call", 0xFF, M_BRANCH_FLAG, X86II::Void | X86II::MRMS2m | X86II::Arg32,
NoIR, NoIR) // call [m32]
// Misc instructions
I(LEAVE , "leave", 0xC9, 0, X86II::RawFrm, O_EBP, O_EBP) // leave