AMDGPU/SI: Enable lanemask tracking in misched
Summary:
This results in higher register usage, but should make it easier for
the compiler to hide latency.
This pass is a prerequisite for some more scheduler improvements, and I
think the increase register usage with this patch is acceptable, because
when combined with the scheduler improvements, the total register usage
will decrease.
shader-db stats:
2382 shaders in 478 tests
Totals:
SGPRS: 48672 -> 49088 (0.85 %)
VGPRS: 34148 -> 34847 (2.05 %)
Code Size: 1285816 -> 1289128 (0.26 %) bytes
LDS: 28 -> 28 (0.00 %) blocks
Scratch: 492544 -> 573440 (16.42 %) bytes per wave
Max Waves: 6856 -> 6846 (-0.15 %)
Wait states: 0 -> 0 (0.00 %)
Depends on D18451
Reviewers: nhaehnle, arsenm
Subscribers: arsenm, llvm-commits
Differential Revision: http://reviews.llvm.org/D18452
llvm-svn: 264876
diff --git a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.class.ll b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.class.ll
index fd0e0f5..3eb7f6b 100644
--- a/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.class.ll
+++ b/llvm/test/CodeGen/AMDGPU/llvm.amdgcn.class.ll
@@ -187,7 +187,7 @@
; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
; SI: v_cmp_class_f64_e32 vcc, [[SA]], [[VB]]
-; SI-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, vcc
+; SI: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, vcc
; SI-NEXT: buffer_store_dword [[RESULT]]
; SI: s_endpgm
define void @test_class_f64(i32 addrspace(1)* %out, double %a, i32 %b) #0 {
@@ -202,7 +202,7 @@
; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
; SI: v_cmp_class_f64_e64 [[CMP:s\[[0-9]+:[0-9]+\]]], |[[SA]]|, [[VB]]
-; SI-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
+; SI: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
; SI-NEXT: buffer_store_dword [[RESULT]]
; SI: s_endpgm
define void @test_class_fabs_f64(i32 addrspace(1)* %out, double %a, i32 %b) #0 {
@@ -218,7 +218,7 @@
; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
; SI: v_cmp_class_f64_e64 [[CMP:s\[[0-9]+:[0-9]+\]]], -[[SA]], [[VB]]
-; SI-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
+; SI: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
; SI-NEXT: buffer_store_dword [[RESULT]]
; SI: s_endpgm
define void @test_class_fneg_f64(i32 addrspace(1)* %out, double %a, i32 %b) #0 {
@@ -234,7 +234,7 @@
; SI-DAG: s_load_dword [[SB:s[0-9]+]], s{{\[[0-9]+:[0-9]+\]}}, 0xd
; SI-DAG: v_mov_b32_e32 [[VB:v[0-9]+]], [[SB]]
; SI: v_cmp_class_f64_e64 [[CMP:s\[[0-9]+:[0-9]+\]]], -|[[SA]]|, [[VB]]
-; SI-NEXT: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
+; SI: v_cndmask_b32_e64 [[RESULT:v[0-9]+]], 0, -1, [[CMP]]
; SI-NEXT: buffer_store_dword [[RESULT]]
; SI: s_endpgm
define void @test_class_fneg_fabs_f64(i32 addrspace(1)* %out, double %a, i32 %b) #0 {