1 files changed, 1 insertions, 42 deletions
diff --git a/lib/Target/R600/R600ControlFlowFinalizer.cpp b/lib/Target/R600/R600ControlFlowFinalizer.cpp
index 470ff2e107..6b42a7a9fa 100644
--- a/lib/Target/R600/R600ControlFlowFinalizer.cpp
+++ b/lib/Target/R600/R600ControlFlowFinalizer.cpp
@@ -73,44 +73,6 @@ bool CFStack::branchStackContains(CFStack::StackItem Item) {
   return false;
 }
 
-bool CFStack::requiresWorkAroundForInst(unsigned Opcode) {
-  if (Opcode == AMDGPU::CF_ALU_PUSH_BEFORE && ST.hasCaymanISA() &&
-      getLoopDepth() > 1)
-    return true;
-
-  if (!ST.hasCFAluBug())
-    return false;
-
-  switch(Opcode) {
-  default: return false;
-  case AMDGPU::CF_ALU_PUSH_BEFORE:
-  case AMDGPU::CF_ALU_ELSE_AFTER:
-  case AMDGPU::CF_ALU_BREAK:
-  case AMDGPU::CF_ALU_CONTINUE:
-    if (CurrentSubEntries == 0)
-      return false;
-    if (ST.getWavefrontSize() == 64) {
-      // We are being conservative here.  We only require this work-around if
-      // CurrentSubEntries > 3 &&
-      // (CurrentSubEntries % 4 == 3 || CurrentSubEntries % 4 == 0)
-      //
-      // We have to be conservative, because we don't know for certain that
-      // our stack allocation algorithm for Evergreen/NI is correct.  Applying this
-      // work-around when CurrentSubEntries > 3 allows us to over-allocate stack
-      // resources without any problems.
-      return CurrentSubEntries > 3;
-    } else {
-      assert(ST.getWavefrontSize() == 32);
-      // We are being conservative here.  We only require the work-around if
-      // CurrentSubEntries > 7 &&
-      // (CurrentSubEntries % 8 == 7 || CurrentSubEntries % 8 == 0)
-      // See the comment on the wavefront size == 64 case for why we are
-      // being conservative.
-      return CurrentSubEntries > 7;
-    }
-  }
-}
-
 unsigned CFStack::getSubEntrySize(CFStack::StackItem Item) {
   switch(Item) {
   default:
@@ -510,12 +472,9 @@ public:
         if (MI->getOpcode() == AMDGPU::CF_ALU)
           LastAlu.back() = MI;
         I++;
-        bool RequiresWorkAround =
-            CFStack.requiresWorkAroundForInst(MI->getOpcode());
         switch (MI->getOpcode()) {
         case AMDGPU::CF_ALU_PUSH_BEFORE:
-          if (RequiresWorkAround) {
-            DEBUG(dbgs() << "Applying bug work-around for ALU_PUSH_BEFORE\n");
+          if (ST.hasCaymanISA() && CFStack.getLoopDepth() > 1) {
             BuildMI(MBB, MI, MBB.findDebugLoc(MI), TII->get(AMDGPU::CF_PUSH_EG))
                 .addImm(CfCount + 1)
                 .addImm(1);