[llvm-commits] [llvm] r54411 - in /llvm/trunk/lib/Target/X86: X86Instr64bit.td X86InstrInfo.td

[Dan Gohman]

Author: djg
Date: Wed Aug  6 10:52:50 2008
New Revision: 54411

URL: http://llvm.org/viewvc/llvm-project?rev=54411&view=rev
Log:
xchg does not modify FLAGS.

Modified:
    llvm/trunk/lib/Target/X86/X86Instr64bit.td
    llvm/trunk/lib/Target/X86/X86InstrInfo.td

Modified: llvm/trunk/lib/Target/X86/X86Instr64bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Instr64bit.td?rev=54411&r1=54410&r2=54411&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86Instr64bit.td (original)
+++ llvm/trunk/lib/Target/X86/X86Instr64bit.td Wed Aug  6 10:52:50 2008
@@ -1125,7 +1125,8 @@
                [(X86cas addr:$ptr, GR64:$swap, 8)]>, TB, LOCK;
 }
 
-let Constraints = "$val = $dst", Defs = [EFLAGS] in {
+let Constraints = "$val = $dst" in {
+let Defs = [EFLAGS] in
 def LXADD64 : RI<0xC1, MRMSrcMem, (outs GR64:$dst), (ins i64mem:$ptr,GR64:$val),
                "lock xadd $val, $ptr", 
                [(set GR64:$dst, (atomic_load_add_64 addr:$ptr, GR64:$val))]>,

Modified: llvm/trunk/lib/Target/X86/X86InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrInfo.td?rev=54411&r1=54410&r2=54411&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrInfo.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrInfo.td Wed Aug  6 10:52:50 2008
@@ -2582,7 +2582,7 @@
 
 // Atomic swap. These are just normal xchg instructions. But since a memory
 // operand is referenced, the atomicity is ensured.
-let Constraints = "$val = $dst", Defs = [EFLAGS] in {
+let Constraints = "$val = $dst" in {
 def XCHG32rm : I<0x87, MRMSrcMem, (outs GR32:$dst), (ins i32mem:$ptr, GR32:$val),
                "xchg{l}\t{$val, $ptr|$ptr, $val}", 
                [(set GR32:$dst, (atomic_swap_32 addr:$ptr, GR32:$val))]>;