Fix what looks to me obvious instruction definition bugs.

1. CMPXCHG8B and CMPXCHG16B did not specify implicit physical register defs and uses.
2. LCMPXCHG8B is loading 64 bit memory, not 32 bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92985 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86Instr64bit.td b/lib/Target/X86/X86Instr64bit.td
index f99b2f99836f3e296b1d7d6de3bfcb800f93a6b3..b67cb630bbee00bae72b2fd3bb7f169590118ea8 100644 (file)
--- a/lib/Target/X86/X86Instr64bit.td
+++ b/lib/Target/X86/X86Instr64bit.td
@@ -1683,6 +1683,7 @@ def CMPXCHG64rr  : RI<0xB1, MRMDestReg, (outs GR64:$dst), (ins GR64:$src),
 def CMPXCHG64rm  : RI<0xB1, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src),
                       "cmpxchg{q}\t{$src, $dst|$dst, $src}", []>, TB;
                       
+let Defs = [RAX, RDX, EFLAGS], Uses = [RAX, RBX, RCX, RDX] in
 def CMPXCHG16B : RI<0xC7, MRM1m, (outs), (ins i128mem:$dst),
                     "cmpxchg16b\t$dst", []>, TB;
 

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index 0888160a41be82ff111f4b539fc0fa1fd2d00d5e..3323e23ef8c7b395bdb8a772c6e099ddf070e785 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -3798,7 +3798,7 @@ def LCMPXCHG32 : I<0xB1, MRMDestMem, (outs), (ins i32mem:$ptr, GR32:$swap),
                [(X86cas addr:$ptr, GR32:$swap, 4)]>, TB, LOCK;
 }
 let Defs = [EAX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX] in {
-def LCMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i32mem:$ptr),
+def LCMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i64mem:$ptr),
                "lock\n\t"
                "cmpxchg8b\t$ptr",
                [(X86cas8 addr:$ptr)]>, TB, LOCK;
@@ -3864,6 +3864,7 @@ def CMPXCHG16rm  : I<0xB1, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src),
 def CMPXCHG32rm  : I<0xB1, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src),
                      "cmpxchg{l}\t{$src, $dst|$dst, $src}", []>, TB;
 
+let Defs = [EAX, EDX, EFLAGS], Uses = [EAX, EBX, ECX, EDX] in
 def CMPXCHG8B : I<0xC7, MRM1m, (outs), (ins i64mem:$dst),
                   "cmpxchg8b\t$dst", []>, TB;