[TLS on Darwin] use a different mask for tls calls on x86-64.

[oota-llvm.git] / lib / Target / X86 / X86CallingConv.td

diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td
index aaabf7a59f5c12a5ca5b781b00b37cffc779fb29..76256f3c704c0278d7ac4f5a709a99036f2ec6f8 100644 (file)
--- a/lib/Target/X86/X86CallingConv.td
+++ b/lib/Target/X86/X86CallingConv.td
@@ -796,6 +796,12 @@ def CSR_64EHRet : CalleeSavedRegs<(add RAX, RDX, CSR_64)>;
 def CSR_Win64 : CalleeSavedRegs<(add RBX, RBP, RDI, RSI, R12, R13, R14, R15,
                                      (sequence "XMM%u", 6, 15))>;
 
+// The function used by Darwin to obtain the address of a thread-local variable
+// uses rdi to pass a single parameter and rax for the return value. All other
+// GPRs are preserved.
+def CSR_64_TLS_Darwin : CalleeSavedRegs<(add CSR_64, RCX, RDX, RSI,
+                                             R8, R9, R10, R11)>;
+
 // All GPRs - except r11
 def CSR_64_RT_MostRegs : CalleeSavedRegs<(add CSR_64, RAX, RCX, RDX, RSI, RDI,
                                               R8, R9, R10, RSP)>;