[llvm] r178303 - Add the X86 FMAs to the scheduling model.

[Nadav Rotem]

Author: nadav
Date: Thu Mar 28 17:54:45 2013
New Revision: 178303

URL: http://llvm.org/viewvc/llvm-project?rev=178303&view=rev
Log:
Add the X86 FMAs to the scheduling model.

Modified:
    llvm/trunk/lib/Target/X86/X86InstrFormats.td
    llvm/trunk/lib/Target/X86/X86Schedule.td

Modified: llvm/trunk/lib/Target/X86/X86InstrFormats.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrFormats.td?rev=178303&r1=178302&r2=178303&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrFormats.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrFormats.td Thu Mar 28 17:54:45 2013
@@ -566,13 +566,13 @@ class AVXPCLMULIi8<bits<8> o, Format F,
 class FMA3<bits<8> o, Format F, dag outs, dag ins, string asm,
            list<dag>pattern, InstrItinClass itin = NoItinerary>
       : I<o, F, outs, ins, asm, pattern, itin>, T8,
-        OpSize, VEX_4V, Requires<[HasFMA]>;
+        OpSize, VEX_4V, FMASC, Requires<[HasFMA]>;
 
 // FMA4 Instruction Templates
 class FMA4<bits<8> o, Format F, dag outs, dag ins, string asm,
            list<dag>pattern, InstrItinClass itin = NoItinerary>
       : Ii8<o, F, outs, ins, asm, pattern, itin>, TA,
-        OpSize, VEX_4V, VEX_I8IMM, Requires<[HasFMA4]>;
+        OpSize, VEX_4V, VEX_I8IMM, FMASC, Requires<[HasFMA4]>;
 
 // XOP 2, 3 and 4 Operand Instruction Template
 class IXOP<bits<8> o, Format F, dag outs, dag ins, string asm,

Modified: llvm/trunk/lib/Target/X86/X86Schedule.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Schedule.td?rev=178303&r1=178302&r2=178303&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86Schedule.td (original)
+++ llvm/trunk/lib/Target/X86/X86Schedule.td Thu Mar 28 17:54:45 2013
@@ -67,6 +67,10 @@ defm WriteFMul  : X86SchedWritePair; //
 defm WriteFDiv  : X86SchedWritePair; // Floating point division.
 defm WriteFSqrt : X86SchedWritePair; // Floating point square root.
 defm WriteFRcp  : X86SchedWritePair; // Floating point reciprocal.
+defm WriteFMA   : X86SchedWritePair; // Fused Multiply Add.
+
+// FMA Scheduling helper class.
+class FMASC { X86FoldableSchedWrite Sched = WriteFAdd; }
 
 // Vector integer operations.
 defm WriteVecALU   : X86SchedWritePair; // Vector integer ALU op, no logicals.