llvm/test/Transforms/Util/strip-gc-relocates.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=strip-gc-relocates,instcombine < %s | FileCheck %s
; test utility/debugging pass which removes gc.relocates, inserted by -rewrite-statepoints-for-gc
declare void @use_obj32(ptr addrspace(1)) "gc-leaf-function"

declare void @g()
declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32) #0
declare void @do_safepoint()

declare ptr addrspace(1) @new_instance() #1


; Simple case: remove gc.relocate
define ptr addrspace(1) @test1(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: @test1(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) [ "deopt"(i32 100), "gc-live"() ]
; CHECK-NEXT:    ret ptr addrspace(1) [[ARG:%.*]]
;
entry:
  %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg), "deopt" (i32 100)]
  %arg.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 0, i32 0) ; (%arg, %arg)
  ret ptr addrspace(1) %arg.relocated
}

; Remove gc.relocates in presence of nested relocates.
define void @test2(ptr addrspace(1) %base) gc "statepoint-example" {
; CHECK-LABEL: @test2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[PTR_GEP1:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE:%.*]], i64 30
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT:    call void @use_obj32(ptr addrspace(1) [[PTR_GEP1]])
; CHECK-NEXT:    [[STATEPOINT_TOKEN1:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT:    call void @use_obj32(ptr addrspace(1) [[PTR_GEP1]])
; CHECK-NEXT:    ret void
;
entry:
  %ptr.gep = getelementptr i32, ptr addrspace(1) %base, i32 15
  %ptr.gep1 = getelementptr i32, ptr addrspace(1) %ptr.gep, i32 15
  %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %ptr.gep1, ptr addrspace(1) %base)]
  %ptr.gep1.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 1, i32 0) ; (%base, %ptr.gep1)
  %base.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 1, i32 1) ; (%base, %base)
  call void @use_obj32(ptr addrspace(1) %ptr.gep1.relocated)
  %statepoint_token1 = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %ptr.gep1.relocated, ptr addrspace(1) %base.relocated)]
  %ptr.gep1.relocated2 = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token1, i32 1, i32 0) ; (%base.relocated, %ptr.gep1.relocated)
  %base.relocated3 = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token1, i32 1, i32 1) ; (%base.relocated, %base.relocated)
  call void @use_obj32(ptr addrspace(1) %ptr.gep1.relocated2)
  ret void
}

; landing pad gc.relocates removed by instcombine since it has no uses.
define ptr addrspace(1) @test3(ptr addrspace(1) %arg) gc "statepoint-example" personality i32 8 {
; CHECK-LABEL: @test3(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = invoke token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) [ "deopt"(i32 100), "gc-live"() ]
; CHECK-NEXT:    to label [[NORMAL_DEST:%.*]] unwind label [[UNWIND_DEST:%.*]]
; CHECK:       normal_dest:
; CHECK-NEXT:    ret ptr addrspace(1) [[ARG:%.*]]
; CHECK:       unwind_dest:
; CHECK-NEXT:    [[LPAD:%.*]] = landingpad token
; CHECK-NEXT:    cleanup
; CHECK-NEXT:    resume token undef
;
entry:
  %statepoint_token = invoke token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg), "deopt" (i32 100)]
  to label %normal_dest unwind label %unwind_dest

normal_dest:                                      ; preds = %entry
  %arg.relocated1 = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 0, i32 0) ; (%arg, %arg)
  ret ptr addrspace(1) %arg.relocated1

unwind_dest:                                      ; preds = %entry
  %lpad = landingpad token
  cleanup
  %arg.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %lpad, i32 0, i32 0) ; (%arg, %arg)
  resume token undef
}

; in presence of phi
define void @test4(i1 %cond) gc "statepoint-example" {
; CHECK-LABEL: @test4(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[BASE1:%.*]] = call ptr addrspace(1) @new_instance()
; CHECK-NEXT:    [[BASE2:%.*]] = call ptr addrspace(1) @new_instance()
; CHECK-NEXT:    br i1 [[COND:%.*]], label [[HERE:%.*]], label [[THERE:%.*]]
; CHECK:       here:
; CHECK-NEXT:    br label [[MERGE:%.*]]
; CHECK:       there:
; CHECK-NEXT:    br label [[MERGE]]
; CHECK:       merge:
; CHECK-NEXT:    [[BASEPHI_BASE:%.*]] = phi ptr addrspace(1) [ [[BASE1]], [[HERE]] ], [ [[BASE2]], [[THERE]] ], !is_base_value !0
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
; CHECK-NEXT:    [[PTR_GEP_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[BASEPHI_BASE]], i64 15
; CHECK-NEXT:    call void @use_obj32(ptr addrspace(1) [[PTR_GEP_REMAT]])
; CHECK-NEXT:    ret void
;
entry:
  %base1 = call ptr addrspace(1) @new_instance()
  %base2 = call ptr addrspace(1) @new_instance()
  br i1 %cond, label %here, label %there

here:                                             ; preds = %entry
  br label %merge

there:                                            ; preds = %entry
  br label %merge

merge:                                            ; preds = %there, %here
  %basephi.base = phi ptr addrspace(1) [ %base1, %here ], [ %base2, %there ], !is_base_value !0
  %basephi = phi ptr addrspace(1) [ %base1, %here ], [ %base2, %there ]
  %ptr.gep = getelementptr i32, ptr addrspace(1) %basephi, i32 15
  %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %basephi.base)]
  %basephi.base.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 0, i32 0) ; (%basephi.base, %basephi.base)
  %ptr.gep.remat = getelementptr i32, ptr addrspace(1) %basephi.base.relocated, i32 15
  call void @use_obj32(ptr addrspace(1) %ptr.gep.remat)
  ret void
}

; The gc.relocate type is different from %arg, but removing the gc.relocate,
; needs a bitcast to be added from ptr addrspace(1) to ptr addrspace(1)
define ptr addrspace(1) @test5(ptr addrspace(1) %arg) gc "statepoint-example" {
; CHECK-LABEL: @test5(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr nonnull elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) [ "deopt"(i32 100), "gc-live"() ]
; CHECK-NEXT:    ret ptr addrspace(1) [[ARG:%.*]]
;
entry:
  %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @g, i32 0, i32 0, i32 0, i32 0) ["gc-live"(ptr addrspace(1) %arg), "deopt" (i32 100)]
  %arg.relocated = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %statepoint_token, i32 0, i32 0) ; (%arg, %arg)
  ret ptr addrspace(1) %arg.relocated
}

attributes #0 = { nounwind readonly }
attributes #1 = { nounwind "gc-leaf-function" }
!0 = !{}