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add support for PIC on linux x86-64

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llvm-svn: 52139
This commit is contained in:
Rafael Espindola 2008-06-09 09:52:31 +00:00
parent 806f0a8411
commit feaadb1e05
12 changed files with 146 additions and 12 deletions
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28
lib/Target/X86/X86ATTAsmPrinter.cpp
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@ -197,11 +197,16 @@ bool X86ATTAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
return false;
}
static inline bool printGOT(TargetMachine &TM, const X86Subtarget* ST) {
static inline bool shouldPrintGOT(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isPICStyleGOT() && TM.getRelocationModel() == Reloc::PIC_;
}
static inline bool printStub(TargetMachine &TM, const X86Subtarget* ST) {
static inline bool shouldPrintPLT(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isTargetELF() && TM.getRelocationModel() == Reloc::PIC_ &&
(ST->isPICStyleRIPRel() || ST->isPICStyleGOT());
}
static inline bool shouldPrintStub(TargetMachine &TM, const X86Subtarget* ST) {
return ST->isPICStyleStub() && TM.getRelocationModel() != Reloc::Static;
}
@ -304,7 +309,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
needCloseParen = true;
}
if (printStub(TM, Subtarget)) {
if (shouldPrintStub(TM, Subtarget)) {
// Link-once, declaration, or Weakly-linked global variables need
// non-lazily-resolved stubs
if (GV->isDeclaration() ||
@ -333,11 +338,11 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
}
O << Name;
if (isCallOp && isa<Function>(GV)) {
if (printGOT(TM, Subtarget)) {
// Assemble call via PLT for non-local symbols
if (!(GV->hasHiddenVisibility() || GV->hasProtectedVisibility()) ||
GV->isDeclaration())
if (isCallOp) {
if (shouldPrintPLT(TM, Subtarget)) {
// Assemble call via PLT for externally visible symbols
if (!GV->hasHiddenVisibility() && !GV->hasProtectedVisibility() &&
!GV->hasInternalLinkage())
O << "@PLT";
}
if (Subtarget->isTargetCygMing() && GV->isDeclaration())
@ -364,7 +369,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
else
O << "@NTPOFF"; // local exec TLS model
} else if (isMemOp) {
if (printGOT(TM, Subtarget)) {
if (shouldPrintGOT(TM, Subtarget)) {
if (Subtarget->GVRequiresExtraLoad(GV, TM, false))
O << "@GOT";
else
@ -396,7 +401,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
bool needCloseParen = false;
std::string Name(TAI->getGlobalPrefix());
Name += MO.getSymbolName();
if (isCallOp && printStub(TM, Subtarget)) {
if (isCallOp && shouldPrintStub(TM, Subtarget)) {
FnStubs.insert(Name);
printSuffixedName(Name, "$stub");
return;
@ -412,7 +417,7 @@ void X86ATTAsmPrinter::printOperand(const MachineInstr *MI, unsigned OpNo,
O << Name;
if (printGOT(TM, Subtarget)) {
if (shouldPrintPLT(TM, Subtarget)) {
std::string GOTName(TAI->getGlobalPrefix());
GOTName+="_GLOBAL_OFFSET_TABLE_";
if (Name == GOTName)
@ -646,4 +651,3 @@ void X86ATTAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
// Include the auto-generated portion of the assembly writer.
#include "X86GenAsmWriter.inc"

11
test/CodeGen/X86/x86-64-pic-1.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {call f@PLT} %t1
define void @g() {
entry:
call void @f( )
ret void
}
declare void @f()

13
test/CodeGen/X86/x86-64-pic-10.ll Normal file
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@ -0,0 +1,13 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {call g@PLT} %t1
@g = alias weak i32 ()* @f
define void @g() {
entry:
%tmp31 = call i32 @g()
ret void
}
declare extern_weak i32 @f()

9
test/CodeGen/X86/x86-64-pic-11.ll Normal file
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@ -0,0 +1,9 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {call __fixunsxfti@PLT} %t1
define i128 @f(x86_fp80 %a) {
entry:
%tmp78 = fptoui x86_fp80 %a to i128
ret i128 %tmp78
}

12
test/CodeGen/X86/x86-64-pic-2.ll Normal file
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@ -0,0 +1,12 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {call f} %t1
; RUN: not grep {call f@PLT} %t1
define void @g() {
entry:
call void @f( )
ret void
}
declare hidden void @f()

15
test/CodeGen/X86/x86-64-pic-3.ll Normal file
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@ -0,0 +1,15 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {call f} %t1
; RUN: not grep {call f@PLT} %t1
define void @g() {
entry:
call void @f( )
ret void
}
define internal void @f() {
entry:
ret void
}

11
test/CodeGen/X86/x86-64-pic-4.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {movq a@GOTPCREL(%rip),} %t1
@a = global i32 0
define i32 @get_a() {
entry:
%tmp1 = load i32* @a, align 4
ret i32 %tmp1
}

12
test/CodeGen/X86/x86-64-pic-5.ll Normal file
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@ -0,0 +1,12 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {movl a(%rip),} %t1
; RUN: not grep GOTPCREL %t1
@a = hidden global i32 0
define i32 @get_a() {
entry:
%tmp1 = load i32* @a, align 4
ret i32 %tmp1
}

12
test/CodeGen/X86/x86-64-pic-6.ll Normal file
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@ -0,0 +1,12 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {movl a(%rip),} %t1
; RUN: not grep GOTPCREL %t1
@a = internal global i32 0
define i32 @get_a() {
entry:
%tmp1 = load i32* @a, align 4
ret i32 %tmp1
}

10
test/CodeGen/X86/x86-64-pic-7.ll Normal file
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@ -0,0 +1,10 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {movq f@GOTPCREL(%rip),} %t1
define void ()* @g() {
entry:
ret void ()* @f
}
declare void @f()

11
test/CodeGen/X86/x86-64-pic-8.ll Normal file
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@ -0,0 +1,11 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {leaq f(%rip),} %t1
; RUN: not grep GOTPCREL %t1
define void ()* @g() {
entry:
ret void ()* @f
}
declare hidden void @f()

14
test/CodeGen/X86/x86-64-pic-9.ll Normal file
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@ -0,0 +1,14 @@
; RUN: llvm-as < %s | \
; RUN: llc -mtriple=x86_64-pc-linux -relocation-model=pic -o %t1 -f
; RUN: grep {leaq f(%rip),} %t1
; RUN: not grep GOTPCREL %t1
define void ()* @g() {
entry:
ret void ()* @f
}
define internal void @f() {
entry:
ret void
}