[PATCH] D18599: AMDGPU/SI: Add latency for export instructions

[Tom Stellard via llvm-commits]

tstellarAMD created this revision.
tstellarAMD added a reviewer: arsenm.
tstellarAMD added a subscriber: llvm-commits.
Herald added a subscriber: arsenm.

http://reviews.llvm.org/D18599

Files:
  lib/Target/AMDGPU/SIInstrInfo.td
  test/CodeGen/AMDGPU/ret.ll

Index: test/CodeGen/AMDGPU/ret.ll
===================================================================
--- test/CodeGen/AMDGPU/ret.ll
+++ test/CodeGen/AMDGPU/ret.ll
@@ -20,13 +20,12 @@
 }
 
 ; GCN-LABEL: {{^}}vgpr_literal:
-; GCN: v_mov_b32_e32 v4, v0
+; GCN: exp 15, 0, 1, 1, 1, v0, v0, v0, v0
+; GCN: s_waitcnt expcnt(0)
 ; GCN-DAG: v_mov_b32_e32 v0, 1.0
 ; GCN-DAG: v_mov_b32_e32 v1, 2.0
 ; GCN-DAG: v_mov_b32_e32 v2, 4.0
 ; GCN-DAG: v_mov_b32_e32 v3, -1.0
-; GCN: exp 15, 0, 1, 1, 1, v4, v4, v4, v4
-; GCN: s_waitcnt expcnt(0)
 ; GCN-NOT: s_endpgm
 define {float, float, float, float} @vgpr_literal([9 x <16 x i8>] addrspace(2)* byval, i32 inreg, i32 inreg, float) #0 {
   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %3, float %3, float %3, float %3)
@@ -232,13 +231,13 @@
 
 
 ; GCN-LABEL: {{^}}structure_literal:
-; GCN: v_mov_b32_e32 v3, v0
+; GCN: exp 15, 0, 1, 1, 1, v0, v0, v0, v0
+; GCN: s_waitcnt expcnt(0)
 ; GCN-DAG: v_mov_b32_e32 v0, 1.0
 ; GCN-DAG: s_mov_b32 s0, 2
 ; GCN-DAG: s_mov_b32 s1, 3
 ; GCN-DAG: v_mov_b32_e32 v1, 2.0
 ; GCN-DAG: v_mov_b32_e32 v2, 4.0
-; GCN-DAG: exp 15, 0, 1, 1, 1, v3, v3, v3, v3
 define {{float, i32}, {i32, <2 x float>}} @structure_literal([9 x <16 x i8>] addrspace(2)* byval, i32 inreg, i32 inreg, float) #0 {
   call void @llvm.SI.export(i32 15, i32 1, i32 1, i32 0, i32 1, float %3, float %3, float %3, float %3)
   ret {{float, i32}, {i32, <2 x float>}} {{float, i32} {float 1.0, i32 2}, {i32, <2 x float>} {i32 3, <2 x float> <float 2.0, float 4.0>}}
Index: lib/Target/AMDGPU/SIInstrInfo.td
===================================================================
--- lib/Target/AMDGPU/SIInstrInfo.td
+++ lib/Target/AMDGPU/SIInstrInfo.td
@@ -796,6 +796,7 @@
 
   let EXP_CNT = 1;
   let Uses = [EXEC];
+  let SchedRW = [WriteExport];
 }
 
 multiclass EXP_m {


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