review changes

Author: VigneshwarJ

llvm/test/CodeGen/AMDGPU/machine-sink-ignorable-exec-use.mir

@@ -750,9 +750,9 @@ body: |
   ; GFX9-NEXT:   [[COPY1:%[0-9]+]]:vreg_64 = COPY [[S_MOV_B64_]]
   ; GFX9-NEXT:   [[GLOBAL_LOAD_DWORD:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD killed [[COPY1]], 0, 0, implicit $exec :: (load (s32), addrspace 1)
   ; GFX9-NEXT:   [[V_PERMLANE32_SWAP_B32_e64_:%[0-9]+]]:vgpr_32, [[V_PERMLANE32_SWAP_B32_e64_1:%[0-9]+]]:vgpr_32 = V_PERMLANE32_SWAP_B32_e64 [[GLOBAL_LOAD_DWORD]], [[GLOBAL_LOAD_DWORD]], 0, 0, implicit $exec
-  ; GFX9-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32(s32) = COPY $vgpr0
+  ; GFX9-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr0
   ; GFX9-NEXT:   [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 1
-  ; GFX9-NEXT:   [[V_CMP_LT_I32_e64_:%[0-9]+]]:sreg_64 = V_CMP_LT_I32_e64 [[COPY2]](s32), [[S_MOV_B32_]], implicit $exec
+  ; GFX9-NEXT:   [[V_CMP_LT_I32_e64_:%[0-9]+]]:sreg_64 = V_CMP_LT_I32_e64 [[COPY2]], [[S_MOV_B32_]], implicit $exec
   ; GFX9-NEXT:   [[SI_IF:%[0-9]+]]:sreg_64 = SI_IF [[V_CMP_LT_I32_e64_]], %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
   ; GFX9-NEXT:   S_BRANCH %bb.1
   ; GFX9-NEXT: {{  $}}
@@ -770,27 +770,33 @@ body: |
   ; GFX9-NEXT: bb.3:
   ; GFX9-NEXT:   S_ENDPGM 0, implicit [[PHI]]
   bb.0:
+    successors: %bb.2(0x40000000), %bb.1(0x40000000)
     liveins: $vgpr0
-    %1:vgpr_32 = COPY $vgpr0
-    %3:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
-    %5:sreg_64 = S_MOV_B64 0
-    %7:vreg_64 = COPY %5
-    %9:vgpr_32 = GLOBAL_LOAD_DWORD killed %7, 0, 0, implicit $exec :: (load (s32), addrspace 1)
-    %10:vgpr_32, %11:vgpr_32 = V_PERMLANE32_SWAP_B32_e64 %9:vgpr_32, %9:vgpr_32, 0, 0, implicit $exec
-    %15:vgpr_32(s32) = COPY $vgpr0
-    %16:sreg_32 = S_MOV_B32 1
-    %17:sreg_64 = V_CMP_LT_I32_e64 %15(s32), %16, implicit $exec
-    %18:sreg_64 = COPY %17
-    %19:sreg_64 = SI_IF %18, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
+
+    %0:vgpr_32 = COPY $vgpr0
+    %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
+    %2:sreg_64 = S_MOV_B64 0
+    %3:vreg_64 = COPY %2
+    %4:vgpr_32 = GLOBAL_LOAD_DWORD killed %3, 0, 0, implicit $exec :: (load (s32), addrspace 1)
+    %5:vgpr_32, %6:vgpr_32 = V_PERMLANE32_SWAP_B32_e64 %4, %4, 0, 0, implicit $exec
+    %7:vgpr_32 = COPY $vgpr0
+    %8:sreg_32 = S_MOV_B32 1
+    %9:sreg_64 = V_CMP_LT_I32_e64 %7, %8, implicit $exec
+    %10:sreg_64 = COPY %9
+    %11:sreg_64 = SI_IF %10, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
     S_BRANCH %bb.1
 
   bb.1:
-    %20:vgpr_32 = V_MAX_I32_e64 %10:vgpr_32, %11:vgpr_32, implicit $exec
+    successors: %bb.2(0x80000000)
+
+    %12:vgpr_32 = V_MAX_I32_e64 %5, %6, implicit $exec
 
   bb.2:
-    %22:vgpr_32 = PHI %3, %bb.0, %20, %bb.1
-    SI_END_CF %19, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
+    successors: %bb.3(0x80000000)
+
+    %13:vgpr_32 = PHI %1, %bb.0, %12, %bb.1
+    SI_END_CF %11, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
 
   bb.3:
-    S_ENDPGM 0, implicit %22
+    S_ENDPGM 0, implicit %13
 ...