[llvm-commits] [llvm] r91310 - /llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td

[Jim Grosbach]

Author: grosbach
Date: Mon Dec 14 12:56:47 2009
New Revision: 91310

URL: http://llvm.org/viewvc/llvm-project?rev=91310&view=rev
Log:
add Thumb2 atomic and memory barrier instruction definitions

Modified:
    llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td

Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td?rev=91310&r1=91309&r2=91310&view=diff

==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb2.td Mon Dec 14 12:56:47 2009
@@ -1065,6 +1065,66 @@
                    RegConstraint<"$false = $dst">;
 
 //===----------------------------------------------------------------------===//
+// Atomic operations intrinsics
+//
+
+// memory barriers protect the atomic sequences
+let hasSideEffects = 1 in {
+def t2Int_MemBarrierV7 : AInoP<(outs), (ins),
+                        Pseudo, NoItinerary,
+                        "dmb", "",
+                        [(ARMMemBarrier)]> {
+  // FIXME: add support for options other than a full system DMB
+}
+
+def t2Int_SyncBarrierV7 : AInoP<(outs), (ins),
+                        Pseudo, NoItinerary,
+                        "dsb", "",
+                        [(ARMSyncBarrier)]> {
+  // FIXME: add support for options other than a full system DSB
+}
+}
+
+let mayLoad = 1 in {
+def t2LDREXB : Thumb2I<(outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
+                      Size4Bytes, NoItinerary,
+                      "ldrexb", "\t$dest, [$ptr]", "",
+                      []>;
+def t2LDREXH : Thumb2I<(outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
+                      Size4Bytes, NoItinerary,
+                      "ldrexh", "\t$dest, [$ptr]", "",
+                      []>;
+def t2LDREX  : Thumb2I<(outs GPR:$dest), (ins GPR:$ptr), AddrModeNone,
+                      Size4Bytes, NoItinerary,
+                      "ldrex", "\t$dest, [$ptr]", "",
+                      []>;
+def t2LDREXD : Thumb2I<(outs GPR:$dest, GPR:$dest2), (ins GPR:$ptr),
+                      AddrModeNone, Size4Bytes, NoItinerary,
+                      "ldrexd", "\t$dest, $dest2, [$ptr]", "",
+                      []>;
+}
+
+let mayStore = 1 in {
+def t2STREXB : Thumb2I<(outs GPR:$success), (ins GPR:$src, GPR:$ptr),
+                      AddrModeNone, Size4Bytes, NoItinerary,
+                      "strexb", "\t$success, $src, [$ptr]", "",
+                      []>;
+def t2STREXH : Thumb2I<(outs GPR:$success), (ins GPR:$src, GPR:$ptr),
+                      AddrModeNone, Size4Bytes, NoItinerary,
+                      "strexh", "\t$success, $src, [$ptr]", "",
+                      []>;
+def t2STREX  : Thumb2I<(outs GPR:$success), (ins GPR:$src, GPR:$ptr),
+                      AddrModeNone, Size4Bytes, NoItinerary,
+                      "strex", "\t$success, $src, [$ptr]", "",
+                      []>;
+def t2STREXD : Thumb2I<(outs GPR:$success),
+                      (ins GPR:$src, GPR:$src2, GPR:$ptr),
+                      AddrModeNone, Size4Bytes, NoItinerary,
+                      "strexd", "\t$success, $src, $src2, [$ptr]", "",
+                      []>;
+}
+
+//===----------------------------------------------------------------------===//
 // TLS Instructions
 //