R600/SI: replace WQM intrinsic
Just enable WQM when we see an LDS interpolation instruction.
Signed-off-by: Christian König <christian.koenig@amd.com>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178019 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/R600/SILowerControlFlow.cpp b/lib/Target/R600/SILowerControlFlow.cpp
index 6b3f626..2b60eb9 100644
--- a/lib/Target/R600/SILowerControlFlow.cpp
+++ b/lib/Target/R600/SILowerControlFlow.cpp
@@ -410,6 +410,7 @@
bool SILowerControlFlowPass::runOnMachineFunction(MachineFunction &MF) {
bool HaveKill = false;
+ bool NeedWQM = false;
unsigned Depth = 0;
for (MachineFunction::iterator BI = MF.begin(), BE = MF.end();
@@ -479,9 +480,22 @@
case AMDGPU::SI_INDIRECT_DST_V16:
IndirectDst(MI);
break;
+
+ case AMDGPU::V_INTERP_P1_F32:
+ case AMDGPU::V_INTERP_P2_F32:
+ case AMDGPU::V_INTERP_MOV_F32:
+ NeedWQM = true;
+ break;
+
}
}
}
+ if (NeedWQM) {
+ MachineBasicBlock &MBB = MF.front();
+ BuildMI(MBB, MBB.getFirstNonPHI(), DebugLoc(), TII->get(AMDGPU::S_WQM_B64),
+ AMDGPU::EXEC).addReg(AMDGPU::EXEC);
+ }
+
return true;
}