From 18ebf747812f6af74143c75d86abad271c95346a Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@apple.com>
Date: Wed, 23 Jun 2010 08:01:49 +0000
Subject: [PATCH] Update uses, defs, and comments for darwin tls patterns.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106621 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86Instr64bit.td | 11 ++++-------
 lib/Target/X86/X86InstrInfo.td  | 11 +++++------
 2 files changed, 9 insertions(+), 13 deletions(-)

diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td
index eb1133321b9..f1d504bb220 100644
--- a/lib/Target/X86/X86Instr64bit.td
+++ b/lib/Target/X86/X86Instr64bit.td
@@ -1705,13 +1705,10 @@ def TLS_addr64 : I<0, Pseudo, (outs), (ins lea64mem:$sym),
                   [(X86tlsaddr tls64addr:$sym)]>,
                   Requires<[In64BitMode]>;
 
-// FIXME: Not true for darwin
-let Defs = [RAX, RCX, RDX, RSI, RDI, R8, R9, R10, R11,
-            FP0, FP1, FP2, FP3, FP4, FP5, FP6, ST0, ST1,
-            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],
+// For x86_64, the address of the thunk is passed in %rdi, on return 
+// the address of the variable is in %rax.  All other registers are preserved.
+let Defs = [RAX],
+    Uses = [RDI],
     usesCustomInserter = 1 in
 def TLSCall_64 : I<0, Pseudo, (outs), (ins i64mem:$sym),
                   "# Fixme into a call",
diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 02508cb26f9..14982e79ea2 100644
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -3851,12 +3851,11 @@ def TLS_addr32 : I<0, Pseudo, (outs), (ins lea32mem:$sym),
                   [(X86tlsaddr tls32addr:$sym)]>,
                   Requires<[In32BitMode]>;
 
-// FIXME: Not true for darwin
-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],
+// For i386, the address of the thunk is passed on the stack, on return the 
+// address of the variable is in %eax.  %ecx is trashed during the function 
+// call.  %edx is preserved.
+let Defs = [EAX],
+    Uses = [ESP, ECX],
     usesCustomInserter = 1 in
 def TLSCall_32 : I<0, Pseudo, (outs), (ins i32mem:$sym),
                 "# Fixme into a call",
-- 
2.11.0