From: Vincent Lejeune <vljn@ovi.com>
Date: Wed, 3 Apr 2013 16:49:34 +0000 (+0000)
Subject: R600: Factorize maximum alu per clause in a single location
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=dae2a20a56b28b4685249982a80a0043b7673e09;p=oota-llvm.git

R600: Factorize maximum alu per clause in a single location

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178667 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/R600/R600EmitClauseMarkers.cpp b/lib/Target/R600/R600EmitClauseMarkers.cpp
index bda3703af7f..06cf8ac6c42 100644
--- a/lib/Target/R600/R600EmitClauseMarkers.cpp
+++ b/lib/Target/R600/R600EmitClauseMarkers.cpp
@@ -201,7 +201,7 @@ private:
           !SubstituteKCacheBank(I, KCacheBanks))
         break;
       AluInstCount += OccupiedDwords(I);
-      if (AluInstCount > 124)
+      if (AluInstCount > TII->getMaxAlusPerClause())
         break;
     }
     unsigned Opcode = PushBeforeModifier ?
diff --git a/lib/Target/R600/R600InstrInfo.cpp b/lib/Target/R600/R600InstrInfo.cpp
index 08650980fd5..b232188a264 100644
--- a/lib/Target/R600/R600InstrInfo.cpp
+++ b/lib/Target/R600/R600InstrInfo.cpp
@@ -645,6 +645,9 @@ const TargetRegisterClass *R600InstrInfo::getSuperIndirectRegClass() const {
   return &AMDGPU::IndirectRegRegClass;
 }
 
+unsigned R600InstrInfo::getMaxAlusPerClause() const {
+  return 115;
+}
 
 MachineInstrBuilder R600InstrInfo::buildDefaultInstruction(MachineBasicBlock &MBB,
                                                   MachineBasicBlock::iterator I,
diff --git a/lib/Target/R600/R600InstrInfo.h b/lib/Target/R600/R600InstrInfo.h
index bf9569e6598..dbae90013d2 100644
--- a/lib/Target/R600/R600InstrInfo.h
+++ b/lib/Target/R600/R600InstrInfo.h
@@ -145,6 +145,7 @@ namespace llvm {
 
   virtual const TargetRegisterClass *getSuperIndirectRegClass() const;
 
+  unsigned getMaxAlusPerClause() const;
 
   ///buildDefaultInstruction - This function returns a MachineInstr with
   /// all the instruction modifiers initialized to their default values.
diff --git a/lib/Target/R600/R600MachineScheduler.cpp b/lib/Target/R600/R600MachineScheduler.cpp
index 9074364bb3a..a777142a9e7 100644
--- a/lib/Target/R600/R600MachineScheduler.cpp
+++ b/lib/Target/R600/R600MachineScheduler.cpp
@@ -37,7 +37,7 @@ void R600SchedStrategy::initialize(ScheduleDAGMI *dag) {
   CurInstKind = IDOther;
   CurEmitted = 0;
   OccupedSlotsMask = 15;
-  InstKindLimit[IDAlu] = 120; // 120 minus 8 for security
+  InstKindLimit[IDAlu] = TII->getMaxAlusPerClause();
 
 
   const AMDGPUSubtarget &ST = DAG->TM.getSubtarget<AMDGPUSubtarget>();