diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64CallingConvention.td | 9 | ||||
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp | 4 |
2 files changed, 13 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64CallingConvention.td b/llvm/lib/Target/AArch64/AArch64CallingConvention.td index 948b9ddb5df..66d92100e63 100644 --- a/llvm/lib/Target/AArch64/AArch64CallingConvention.td +++ b/llvm/lib/Target/AArch64/AArch64CallingConvention.td @@ -279,6 +279,15 @@ def CSR_AArch64_TLS_Darwin FP, (sequence "Q%u", 0, 31))>; +// We can only handle a register pair with adjacent registers, the register pair +// should belong to the same class as well. Since the access function on the +// fast path calls a function that follows CSR_AArch64_TLS_Darwin, +// CSR_AArch64_CXX_TLS_Darwin should be a subset of CSR_AArch64_TLS_Darwin. +def CSR_AArch64_CXX_TLS_Darwin + : CalleeSavedRegs<(add CSR_AArch64_AAPCS, + (sub (sequence "X%u", 1, 28), X15, X16, X17, X18), + (sequence "D%u", 0, 31))>; + // The ELF stub used for TLS-descriptor access saves every feasible // register. Only X0 and LR are clobbered. def CSR_AArch64_TLS_ELF diff --git a/llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp b/llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp index 1aef31baad2..763b2337de1 100644 --- a/llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp @@ -46,6 +46,8 @@ AArch64RegisterInfo::getCalleeSavedRegs(const MachineFunction *MF) const { return CSR_AArch64_NoRegs_SaveList; if (MF->getFunction()->getCallingConv() == CallingConv::AnyReg) return CSR_AArch64_AllRegs_SaveList; + if (MF->getFunction()->getCallingConv() == CallingConv::CXX_FAST_TLS) + return CSR_AArch64_CXX_TLS_Darwin_SaveList; else return CSR_AArch64_AAPCS_SaveList; } @@ -58,6 +60,8 @@ AArch64RegisterInfo::getCallPreservedMask(const MachineFunction &MF, return CSR_AArch64_NoRegs_RegMask; if (CC == CallingConv::AnyReg) return CSR_AArch64_AllRegs_RegMask; + if (CC == CallingConv::CXX_FAST_TLS) + return CSR_AArch64_CXX_TLS_Darwin_RegMask; else return CSR_AArch64_AAPCS_RegMask; } |
