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| author | Anton Korobeynikov <asl@math.spbu.ru> | 2013-03-18 08:12:28 +0000 |
|---|---|---|
| committer | Anton Korobeynikov <asl@math.spbu.ru> | 2013-03-18 08:12:28 +0000 |
| commit | 2ee4e428ccf2bfc5bc4cd14b8f344350d95f4cda (patch) | |
| tree | 65c21db63a660205ed79a816ad44fd6716f4d4dc /lib/Target | |
| parent | 87294b65475ffd4238396dba77d4bbf038b22c4e (diff) | |
| download | llvm-2ee4e428ccf2bfc5bc4cd14b8f344350d95f4cda.tar.gz llvm-2ee4e428ccf2bfc5bc4cd14b8f344350d95f4cda.tar.bz2 llvm-2ee4e428ccf2bfc5bc4cd14b8f344350d95f4cda.tar.xz | |
TLS support for MinGW targets.
MinGW is almost completely compatible to MSVC, with the exception of the _tls_array global not being available.
Patch by David Nadlinger!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177257 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index b80b8997c3..10cf13f2aa 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -7834,7 +7834,7 @@ X86TargetLowering::LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const { Chain.getValue(1)); } - if (Subtarget->isTargetWindows()) { + if (Subtarget->isTargetWindows() || Subtarget->isTargetMingw()) { // Just use the implicit TLS architecture // Need to generate someting similar to: // mov rdx, qword [gs:abs 58H]; Load pointer to ThreadLocalStorage @@ -7854,18 +7854,19 @@ X86TargetLowering::LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const { SDValue Chain = DAG.getEntryNode(); // Get the Thread Pointer, which is %fs:__tls_array (32-bit) or - // %gs:0x58 (64-bit). + // %gs:0x58 (64-bit). On MinGW, __tls_array is not available, so directly + // use its literal value of 0x2C. Value *Ptr = Constant::getNullValue(Subtarget->is64Bit() ? Type::getInt8PtrTy(*DAG.getContext(), 256) : Type::getInt32PtrTy(*DAG.getContext(), 257)); - SDValue ThreadPointer = DAG.getLoad(getPointerTy(), dl, Chain, - Subtarget->is64Bit() - ? DAG.getIntPtrConstant(0x58) - : DAG.getExternalSymbol("_tls_array", - getPointerTy()), + SDValue TlsArray = Subtarget->is64Bit() ? DAG.getIntPtrConstant(0x58) : + (Subtarget->isTargetMingw() ? DAG.getIntPtrConstant(0x2C) : + DAG.getExternalSymbol("_tls_array", getPointerTy())); + + SDValue ThreadPointer = DAG.getLoad(getPointerTy(), dl, Chain, TlsArray, MachinePointerInfo(Ptr), false, false, false, 0); |