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Lower TLS_addr32 and TLS_addr64. 

llvm-svn: 120225
This commit is contained in:
Rafael Espindola 2010-11-27 20:43:02 +00:00
parent eab0800695
commit 5d882894d8
6 changed files with 61 additions and 19 deletions
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41
llvm/lib/Target/X86/X86ISelLowering.cpp
View File

@ -9922,6 +9922,44 @@ X86TargetLowering::EmitLoweredTLSCall(MachineInstr *MI,
return BB;
}
MachineBasicBlock *
X86TargetLowering::emitLoweredTLSAddr(MachineInstr *MI,
MachineBasicBlock *BB) const {
const X86InstrInfo *TII
= static_cast<const X86InstrInfo*>(getTargetMachine().getInstrInfo());
DebugLoc DL = MI->getDebugLoc();
if (Subtarget->is64Bit()) {
BuildMI(*BB, MI, DL, TII->get(X86::DATA16_PREFIX));
MachineInstrBuilder MIB = BuildMI(*BB, MI, DL, TII->get(X86::LEA64r),
X86::RDI);
X86AddressMode Addr;
Addr.GV = MI->getOperand(3).getGlobal();
Addr.GVOpFlags = MI->getOperand(3).getTargetFlags();
Addr.Base.Reg = X86::RIP;
addFullAddress(MIB, Addr);
BuildMI(*BB, MI, DL, TII->get(X86::DATA16_PREFIX));
BuildMI(*BB, MI, DL, TII->get(X86::DATA16_PREFIX));
BuildMI(*BB, MI, DL, TII->get(X86::REX64_PREFIX));
BuildMI(*BB, MI, DL, TII->get(X86::CALL64pcrel32))
.addExternalSymbol("__tls_get_addr", X86II::MO_PLT)
.addReg(X86::RDI, RegState::Implicit);
} else {
MachineInstrBuilder MIB = BuildMI(*BB, MI, DL, TII->get(X86::LEA32r),
X86::EAX);
X86AddressMode Addr;
Addr.GV = MI->getOperand(3).getGlobal();
Addr.GVOpFlags = MI->getOperand(3).getTargetFlags();
Addr.IndexReg = X86::EBX;
addFullAddress(MIB, Addr);
BuildMI(*BB, MI, DL, TII->get(X86::CALLpcrel32))
.addExternalSymbol("___tls_get_addr", X86II::MO_PLT)
.addReg(X86::EAX, RegState::Implicit);
}
MI->eraseFromParent(); // The pseudo instruction is gone now.
return BB;
}
MachineBasicBlock *
X86TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const {
@ -9932,6 +9970,9 @@ X86TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
case X86::TLSCall_32:
case X86::TLSCall_64:
return EmitLoweredTLSCall(MI, BB);
case X86::TLS_addr32:
case X86::TLS_addr64:
return emitLoweredTLSAddr(MI, BB);
case X86::CMOV_GR8:
case X86::CMOV_FR32:
case X86::CMOV_FR64:

3
llvm/lib/Target/X86/X86ISelLowering.h
View File

@ -871,6 +871,9 @@ namespace llvm {
MachineBasicBlock *EmitLoweredTLSCall(MachineInstr *MI,
MachineBasicBlock *BB) const;
MachineBasicBlock *emitLoweredTLSAddr(MachineInstr *MI,
MachineBasicBlock *BB) const;
/// Emit nodes that will be selected as "test Op0,Op0", or something
/// equivalent, for use with the given x86 condition code.
SDValue EmitTest(SDValue Op0, unsigned X86CC, SelectionDAG &DAG) const;

15
llvm/lib/Target/X86/X86InstrCompiler.td
View File

@ -242,10 +242,10 @@ let Defs = [EAX, ECX, EDX, FP0, FP1, FP2, FP3, FP4, FP5, FP6, ST0,
MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7,
XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15, EFLAGS],
Uses = [ESP] in
Uses = [ESP],
usesCustomInserter = 1 in
def TLS_addr32 : I<0, Pseudo, (outs), (ins i32mem:$sym),
"leal\t$sym, %eax; "
"call\t___tls_get_addr@PLT",
"# TLS_addr32",
[(X86tlsaddr tls32addr:$sym)]>,
Requires<[In32BitMode]>;
@ -257,13 +257,10 @@ let Defs = [RAX, RCX, RDX, RSI, RDI, R8, R9, R10, R11,
MM0, MM1, MM2, MM3, MM4, MM5, MM6, MM7,
XMM0, XMM1, XMM2, XMM3, XMM4, XMM5, XMM6, XMM7,
XMM8, XMM9, XMM10, XMM11, XMM12, XMM13, XMM14, XMM15, EFLAGS],
Uses = [RSP] in
Uses = [RSP],
usesCustomInserter = 1 in
def TLS_addr64 : I<0, Pseudo, (outs), (ins i64mem:$sym),
".byte\t0x66; "
"leaq\t$sym(%rip), %rdi; "
".word\t0x6666; "
"rex64; "
"call\t__tls_get_addr@PLT",
"# TLS_addr64",
[(X86tlsaddr tls64addr:$sym)]>,
Requires<[In64BitMode]>;

3
llvm/test/CodeGen/X86/2009-04-24.ll
View File

@ -1,5 +1,6 @@
; RUN: llc < %s -march=x86-64 -mtriple=x86_64-linux-gnu -regalloc=fast -relocation-model=pic > %t2
; RUN: grep {leaq.*TLSGD.*__tls_get_addr} %t2
; RUN: grep {leaq.*TLSGD} %t2
; RUN; grep {__tls_get_addr} %t2
; PR4004
@i = thread_local global i32 15

2
llvm/test/CodeGen/X86/2009-12-11-TLSNoRedZone.ll
View File

@ -21,7 +21,7 @@ define void @leaf() nounwind {
; CHECK: leaf:
; CHECK-NOT: -8(%rsp)
; CHECK: leaq link_ptr@TLSGD
; CHECK: call __tls_get_addr@PLT
; CHECK: callq __tls_get_addr@PLT
"file foo2.c, line 14, bb1":
%p = alloca %test*, align 8 ; <%test**> [#uses=4]
br label %"file foo2.c, line 14, bb2"

16
llvm/test/CodeGen/X86/tls-pic.ll
View File

@ -11,11 +11,11 @@ entry:
; X32: f1:
; X32: leal i@TLSGD(,%ebx), %eax
; X32: call ___tls_get_addr@PLT
; X32: calll ___tls_get_addr@PLT
; X64: f1:
; X64: leaq i@TLSGD(%rip), %rdi
; X64: call __tls_get_addr@PLT
; X64: callq __tls_get_addr@PLT
@i2 = external thread_local global i32
@ -27,11 +27,11 @@ entry:
; X32: f2:
; X32: leal i@TLSGD(,%ebx), %eax
; X32: call ___tls_get_addr@PLT
; X32: calll ___tls_get_addr@PLT
; X64: f2:
; X64: leaq i@TLSGD(%rip), %rdi
; X64: call __tls_get_addr@PLT
; X64: callq __tls_get_addr@PLT
@ -43,11 +43,11 @@ entry:
; X32: f3:
; X32: leal i@TLSGD(,%ebx), %eax
; X32: call ___tls_get_addr@PLT
; X32: calll ___tls_get_addr@PLT
; X64: f3:
; X64: leaq i@TLSGD(%rip), %rdi
; X64: call __tls_get_addr@PLT
; X64: callq __tls_get_addr@PLT
define i32* @f4() nounwind {
@ -57,11 +57,11 @@ entry:
; X32: f4:
; X32: leal i@TLSGD(,%ebx), %eax
; X32: call ___tls_get_addr@PLT
; X32: calll ___tls_get_addr@PLT
; X64: f4:
; X64: leaq i@TLSGD(%rip), %rdi
; X64: call __tls_get_addr@PLT
; X64: callq __tls_get_addr@PLT