AMDGPU/GlobalISel: Try to select VOP3 form of add

There are several things broken, but at least emit the right thing for
gfx9.

The import of the pattern with the unused carry out seems to not
work. Needs a special class for clamp, because OperandWithDefaultOps
doesn't really work.

llvm-svn: 364804

1 files changed, 26 insertions, 13 deletions

diff --git a/llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir b/llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir
index f2db55685b5..8f7973d4eca 100644
--- a/llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir
+++ b/llvm/test/CodeGen/AMDGPU/GlobalISel/inst-select-add.mir
@@ -1,24 +1,37 @@
-# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
-# RUN: llc -march=amdgcn -run-pass=instruction-select -verify-machineinstrs -global-isel %s -o - | FileCheck %s -check-prefixes=GCN
+# RUN: llc -march=amdgcn -mcpu=tahiti -run-pass=instruction-select -verify-machineinstrs -o - %s  | FileCheck -check-prefix=GFX6 %s
+# RUN: llc -march=amdgcn -mcpu=fiji -run-pass=instruction-select -verify-machineinstrs -o - %s  | FileCheck -check-prefix=GFX6 %s
+# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=instruction-select -verify-machineinstrs -o - %s  | FileCheck -check-prefix=GFX9 %s
 
 ---
-name:            add_i32
+name:            add_s32
 legalized:       true
 regBankSelected: true
 
 body: |
   bb.0:
     liveins: $sgpr0, $sgpr1, $vgpr0, $vgpr3_vgpr4
-    ; GCN-LABEL: name: add_i32
-    ; GCN: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
-    ; GCN: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr1
-    ; GCN: [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr0
-    ; GCN: [[COPY3:%[0-9]+]]:vreg_64 = COPY $vgpr3_vgpr4
-    ; GCN: [[S_ADD_I32_:%[0-9]+]]:sreg_32_xm0 = S_ADD_I32 [[COPY]], [[COPY1]], implicit-def $scc
-    ; GCN: [[V_ADD_I32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[S_ADD_I32_]], [[COPY2]], implicit-def $vcc, implicit $exec
-    ; GCN: [[V_ADD_I32_e32_1:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[S_ADD_I32_]], [[V_ADD_I32_e32_]], implicit-def $vcc, implicit $exec
-    ; GCN: [[V_ADD_I32_e32_2:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[V_ADD_I32_e32_1]], [[COPY2]], implicit-def $vcc, implicit $exec
-    ; GCN: FLAT_STORE_DWORD [[COPY3]], [[V_ADD_I32_e32_2]], 0, 0, 0, 0, implicit $exec, implicit $flat_scr
+
+    ; GFX6-LABEL: name: add_s32
+    ; GFX6: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
+    ; GFX6: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr1
+    ; GFX6: [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr0
+    ; GFX6: [[COPY3:%[0-9]+]]:vreg_64 = COPY $vgpr3_vgpr4
+    ; GFX6: [[S_ADD_I32_:%[0-9]+]]:sreg_32_xm0 = S_ADD_I32 [[COPY]], [[COPY1]], implicit-def $scc
+    ; GFX6: [[V_ADD_I32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[S_ADD_I32_]], [[COPY2]], implicit-def $vcc, implicit $exec
+    ; GFX6: [[V_ADD_I32_e32_1:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[S_ADD_I32_]], [[V_ADD_I32_e32_]], implicit-def $vcc, implicit $exec
+    ; GFX6: [[V_ADD_I32_e32_2:%[0-9]+]]:vgpr_32 = V_ADD_I32_e32 [[V_ADD_I32_e32_1]], [[COPY2]], implicit-def $vcc, implicit $exec
+    ; GFX6: FLAT_STORE_DWORD [[COPY3]], [[V_ADD_I32_e32_2]], 0, 0, 0, 0, implicit $exec, implicit $flat_scr
+    ; GFX9-LABEL: name: add_s32
+    ; GFX9: [[COPY:%[0-9]+]]:sreg_32 = COPY $sgpr0
+    ; GFX9: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr1
+    ; GFX9: [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr0
+    ; GFX9: [[COPY3:%[0-9]+]]:vreg_64 = COPY $vgpr3_vgpr4
+    ; GFX9: [[S_ADD_I32_:%[0-9]+]]:sreg_32_xm0 = S_ADD_I32 [[COPY]], [[COPY1]], implicit-def $scc
+    ; GFX9: [[V_ADD_U32_e64_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e64 [[S_ADD_I32_]], [[COPY2]], 0, implicit $exec
+    ; GFX9: [[V_ADD_U32_e64_1:%[0-9]+]]:vgpr_32 = V_ADD_U32_e64 [[S_ADD_I32_]], [[V_ADD_U32_e64_]], 0, implicit $exec
+    ; GFX9: [[V_ADD_U32_e64_2:%[0-9]+]]:vgpr_32 = V_ADD_U32_e64 [[V_ADD_U32_e64_1]], [[COPY2]], 0, implicit $exec
+    ; GFX9: FLAT_STORE_DWORD [[COPY3]], [[V_ADD_U32_e64_2]], 0, 0, 0, 0, implicit $exec, implicit $flat_scr
+
     %0:sgpr(s32) = COPY $sgpr0
     %1:sgpr(s32) = COPY $sgpr1
     %2:vgpr(s32) = COPY $vgpr0