diff options
| author | Hans Wennborg <hans@hanshq.net> | 2012-06-01 16:27:21 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2012-06-01 16:27:21 +0000 |
| commit | f0234fcbc9be9798c10dedc3e3c134b7afbc6511 (patch) | |
| tree | 58aa8ee7a2be4159fbbbfe5085f56ea7eee31b1e /lib/Target/X86/X86TargetMachine.cpp | |
| parent | 6bb5c0074dc4cede2ad8efd420ec91288f91b012 (diff) | |
Implement the local-dynamic TLS model for x86 (PR3985)
This implements codegen support for accesses to thread-local variables
using the local-dynamic model, and adds a clean-up pass so that the base
address for the TLS block can be re-used between local-dynamic access on
an execution path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157818 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86TargetMachine.cpp')
| -rw-r--r-- | lib/Target/X86/X86TargetMachine.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86TargetMachine.cpp b/lib/Target/X86/X86TargetMachine.cpp index 89c388415b..c066a5603d 100644 --- a/lib/Target/X86/X86TargetMachine.cpp +++ b/lib/Target/X86/X86TargetMachine.cpp @@ -147,6 +147,10 @@ bool X86PassConfig::addInstSelector() { // Install an instruction selector. PM->add(createX86ISelDag(getX86TargetMachine(), getOptLevel())); + // For ELF, cleanup any local-dynamic TLS accesses. + if (getX86Subtarget().isTargetELF() && getOptLevel() != CodeGenOpt::None) + PM->add(createCleanupLocalDynamicTLSPass()); + // For 32-bit, prepend instructions to set the "global base reg" for PIC. if (!getX86Subtarget().is64Bit()) PM->add(createGlobalBaseRegPass()); |