AMDGPU: Mark s_barrier as a high latency instruction

[oota-llvm.git] / lib / Target / AMDGPU / SIInstructions.td

diff --git a/lib/Target/AMDGPU/SIInstructions.td b/lib/Target/AMDGPU/SIInstructions.td
index b041c394bd7aa4c9661b514e48e42c58535e584f..c3835411d38ecd65db52cf9c9eab1c7f45556535 100644 (file)
--- a/lib/Target/AMDGPU/SIInstructions.td
+++ b/lib/Target/AMDGPU/SIInstructions.td
@@ -479,6 +479,7 @@ let hasSideEffects = 1 in {
 def S_BARRIER : SOPP <0x0000000a, (ins), "s_barrier",
   [(int_AMDGPU_barrier_local)]
 > {
+  let SchedRW = [WriteBarrier];
   let simm16 = 0;
   let mayLoad = 1;
   let mayStore = 1;