third_party/llvm-7.0/llvm/test/Transforms/RewriteStatepointsForGC/base-pointers-7.ll

; RUN: opt < %s -rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s
; RUN: opt < %s -passes=rewrite-statepoints-for-gc -spp-print-base-pointers -S 2>&1 | FileCheck %s

; CHECK: derived %merged_value base %merged_value.base

declare void @site_for_call_safpeoint()

define i64 addrspace(1)* @test(i64 addrspace(1)* %base_obj_x, i64 addrspace(1)* %base_obj_y, i1 %runtime_condition_x, i1 %runtime_condition_y) gc "statepoint-example" {
entry:
  br i1 %runtime_condition_x, label %here, label %there

here:                                             ; preds = %entry
  br i1 %runtime_condition_y, label %bump_here_a, label %bump_here_b

bump_here_a:                                      ; preds = %here
  %x_a = getelementptr i64, i64 addrspace(1)* %base_obj_x, i32 1
  br label %merge_here

bump_here_b:                                      ; preds = %here
  %x_b = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 2
  br label %merge_here

merge_here:                                       ; preds = %bump_here_b, %bump_here_a
; CHECK: merge_here:
; CHECK-DAG: %x.base
; CHECK-DAG: phi i64 addrspace(1)*
; CHECK-DAG: [ %base_obj_x, %bump_here_a ]
; CHECK-DAG: [ %base_obj_y, %bump_here_b ]
  %x = phi i64 addrspace(1)* [ %x_a, %bump_here_a ], [ %x_b, %bump_here_b ]
  br label %merge

there:                                            ; preds = %entry
  %y = getelementptr i64, i64 addrspace(1)* %base_obj_y, i32 1
  br label %merge

merge:                                            ; preds = %there, %merge_here
; CHECK: merge:
; CHECK-DAG:  %merged_value.base
; CHECK-DAG: phi i64 addrspace(1)*
; CHECK-DAG: %merge_here
; CHECK-DAG: [ %base_obj_y, %there ]
; CHECK:  %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ]  
  %merged_value = phi i64 addrspace(1)* [ %x, %merge_here ], [ %y, %there ]
  call void @site_for_call_safpeoint() [ "deopt"(i32 0, i32 -1, i32 0, i32 0, i32 0) ]
  ret i64 addrspace(1)* %merged_value
}