test/Transforms/SROA/invariant-group.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='sroa<preserve-cfg>' -S -o - < %s | FileCheck %s --check-prefixes=CHECK,CHECK-PRESERVE-CFG
; RUN: opt -passes='sroa<modify-cfg>' -S -o - < %s | FileCheck %s --check-prefixes=CHECK,CHECK-MODIFY-CFG

%t = type { i32, i32 }

declare ptr @llvm.launder.invariant.group.p0(ptr %a)
declare ptr @llvm.strip.invariant.group.p0(ptr %a)
declare void @h(i32 %a)
declare i32 @somevalue()

define void @f() {
; CHECK-LABEL: @f(
; CHECK-NEXT:    [[A:%.*]] = alloca [[T:%.*]], align 8
; CHECK-NEXT:    [[A1_I8_INV:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[A]])
; CHECK-NEXT:    [[A2:%.*]] = getelementptr inbounds [[T]], ptr [[A]], i32 0, i32 1
; CHECK-NEXT:    [[SV1:%.*]] = call i32 @somevalue()
; CHECK-NEXT:    [[SV2:%.*]] = call i32 @somevalue()
; CHECK-NEXT:    store i32 [[SV1]], ptr [[A1_I8_INV]], align 4, !invariant.group [[META0:![0-9]+]]
; CHECK-NEXT:    store i32 [[SV2]], ptr [[A2]], align 4
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[A1_I8_INV]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    [[V2:%.*]] = load i32, ptr [[A2]], align 4
; CHECK-NEXT:    call void @h(i32 [[V1]])
; CHECK-NEXT:    call void @h(i32 [[V2]])
; CHECK-NEXT:    ret void
;
  %a = alloca %t

  %a1_i8_inv = call ptr @llvm.launder.invariant.group.p0(ptr %a)
  %a2 = getelementptr inbounds %t, ptr %a, i32 0, i32 1

  %sv1 = call i32 @somevalue()
  %sv2 = call i32 @somevalue()

  store i32 %sv1, ptr %a1_i8_inv, !invariant.group !0
  store i32 %sv2, ptr %a2

  %v1 = load i32, ptr %a1_i8_inv, !invariant.group !0
  %v2 = load i32, ptr %a2

  call void @h(i32 %v1)
  call void @h(i32 %v2)

  ret void
}

define void @g() {
; CHECK-LABEL: @g(
; CHECK-NEXT:    [[A:%.*]] = alloca [[T:%.*]], align 8
; CHECK-NEXT:    [[A1_I8_INV:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[A]])
; CHECK-NEXT:    [[A2:%.*]] = getelementptr inbounds [[T]], ptr [[A]], i32 0, i32 1
; CHECK-NEXT:    [[SV1:%.*]] = call i32 @somevalue()
; CHECK-NEXT:    [[SV2:%.*]] = call i32 @somevalue()
; CHECK-NEXT:    store i32 [[SV1]], ptr [[A1_I8_INV]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    store i32 [[SV2]], ptr [[A2]], align 4
; CHECK-NEXT:    [[V1:%.*]] = load i32, ptr [[A1_I8_INV]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    [[V2:%.*]] = load i32, ptr [[A2]], align 4
; CHECK-NEXT:    call void @h(i32 [[V1]])
; CHECK-NEXT:    call void @h(i32 [[V2]])
; CHECK-NEXT:    [[A1_STRIPPED:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr [[A]])
; CHECK-NEXT:    [[A1_INT:%.*]] = ptrtoint ptr [[A1_STRIPPED]] to i32
; CHECK-NEXT:    call void @h(i32 [[A1_INT]])
; CHECK-NEXT:    ret void
;
  %a = alloca %t

  %a1_i8_inv = call ptr @llvm.launder.invariant.group.p0(ptr %a)
  %a2 = getelementptr inbounds %t, ptr %a, i32 0, i32 1

  %sv1 = call i32 @somevalue()
  %sv2 = call i32 @somevalue()

  store i32 %sv1, ptr %a1_i8_inv, !invariant.group !0
  store i32 %sv2, ptr %a2

  %v1 = load i32, ptr %a1_i8_inv, !invariant.group !0
  %v2 = load i32, ptr %a2

  call void @h(i32 %v1)
  call void @h(i32 %v2)

  %a1_stripped = call ptr @llvm.strip.invariant.group.p0(ptr %a)
  %a1_int = ptrtoint ptr %a1_stripped to i32
  call void @h(i32 %a1_int)

  ret void
}

define void @store_and_launder() {
; CHECK-LABEL: @store_and_launder(
; CHECK-NEXT:    [[VALPTR:%.*]] = alloca i32, align 4
; CHECK-NEXT:    store i32 0, ptr [[VALPTR]], align 4
; CHECK-NEXT:    [[BARR:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[VALPTR]])
; CHECK-NEXT:    ret void
;
  %valptr = alloca i32, align 4
  store i32 0, ptr %valptr, align 4
  %barr = call ptr @llvm.launder.invariant.group.p0(ptr %valptr)
  ret void
}

define i32 @launder_and_load() {
; CHECK-LABEL: @launder_and_load(
; CHECK-NEXT:    [[VALPTR:%.*]] = alloca i32, align 4
; CHECK-NEXT:    [[BARR:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[VALPTR]])
; CHECK-NEXT:    [[V2:%.*]] = load i32, ptr [[VALPTR]], align 4
; CHECK-NEXT:    ret i32 [[V2]]
;
  %valptr = alloca i32, align 4
  %barr = call ptr @llvm.launder.invariant.group.p0(ptr %valptr)
  %v2 = load i32, ptr %valptr
  ret i32 %v2
}

define void @launder_and_ptr_arith() {
; CHECK-LABEL: @launder_and_ptr_arith(
; CHECK-NEXT:    [[VALPTR:%.*]] = alloca i32, align 4
; CHECK-NEXT:    [[BARR:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[VALPTR]])
; CHECK-NEXT:    [[A2:%.*]] = getelementptr inbounds i32, ptr [[VALPTR]], i32 0
; CHECK-NEXT:    ret void
;
  %valptr = alloca i32, align 4
  %barr = call ptr @llvm.launder.invariant.group.p0(ptr %valptr)
  %a2 = getelementptr inbounds i32, ptr %valptr, i32 0
  ret void
}

define void @partial_use_of_alloca() {
; CHECK-LABEL: @partial_use_of_alloca(
; CHECK-NEXT:    [[VALPTR:%.*]] = alloca i32, align 4
; CHECK-NEXT:    store i32 0, ptr [[VALPTR]], align 4
; CHECK-NEXT:    [[BARR:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[VALPTR]])
; CHECK-NEXT:    [[LOAD_VAL:%.*]] = load i32, ptr [[VALPTR]], align 4
; CHECK-NEXT:    [[COND:%.*]] = icmp eq i32 [[LOAD_VAL]], 0
; CHECK-NEXT:    br i1 [[COND]], label [[USE_ALLOCA:%.*]], label [[END:%.*]]
; CHECK:       use_alloca:
; CHECK-NEXT:    call void @use(ptr nonnull [[VALPTR]])
; CHECK-NEXT:    br label [[END]]
; CHECK:       end:
; CHECK-NEXT:    ret void
;
  %valptr = alloca i32, align 4
  store i32 0, ptr %valptr, align 4
  %barr = call ptr @llvm.launder.invariant.group.p0(ptr %valptr)
  %load_val = load i32, ptr %valptr, align 4
  %cond = icmp eq i32 %load_val, 0
  br i1 %cond, label %use_alloca, label %end

use_alloca:
  call void @use(ptr nonnull %valptr)
  br label %end

end:
  ret void
}

define void @partial_promotion_of_alloca() {
; CHECK-LABEL: @partial_promotion_of_alloca(
; CHECK-NEXT:    [[STRUCT_PTR:%.*]] = alloca [[T:%.*]], align 4
; CHECK-NEXT:    [[FIELD_PTR:%.*]] = getelementptr inbounds [[T]], ptr [[STRUCT_PTR]], i32 0, i32 0
; CHECK-NEXT:    store i32 0, ptr [[FIELD_PTR]], align 4
; CHECK-NEXT:    [[VOLATILE_FIELD_PTR:%.*]] = getelementptr inbounds [[T]], ptr [[STRUCT_PTR]], i32 0, i32 1
; CHECK-NEXT:    store volatile i32 0, ptr [[VOLATILE_FIELD_PTR]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    [[BARR:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[STRUCT_PTR]])
; CHECK-NEXT:    [[LOAD_VAL:%.*]] = load volatile i32, ptr [[VOLATILE_FIELD_PTR]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    ret void
;
  %struct_ptr = alloca %t, align 4
  %field_ptr = getelementptr inbounds %t, ptr %struct_ptr, i32 0, i32 0
  store i32 0, ptr %field_ptr, align 4
  %volatile_field_ptr = getelementptr inbounds %t, ptr %struct_ptr, i32 0, i32 1
  store volatile i32 0, ptr %volatile_field_ptr, align 4, !invariant.group !0
  %barr = call ptr @llvm.launder.invariant.group.p0(ptr %struct_ptr)
  %load_val = load volatile i32, ptr %volatile_field_ptr, align 4, !invariant.group !0
  ret void
}

define void @memcpy_after_laundering_alloca(ptr %ptr) {
; CHECK-LABEL: @memcpy_after_laundering_alloca(
; CHECK-NEXT:    [[ALLOCA:%.*]] = alloca { i64, i64 }, align 8
; CHECK-NEXT:    [[LAUNDER:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[ALLOCA]])
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[LAUNDER]], ptr [[PTR:%.*]], i64 16, i1 false)
; CHECK-NEXT:    ret void
;
  %alloca = alloca { i64, i64 }, align 8
  %launder = call ptr @llvm.launder.invariant.group.p0(ptr %alloca)
  call void @llvm.memcpy.p0.p0.i64(ptr %launder, ptr %ptr, i64 16, i1 false)
  ret void
}

define void @memcpy_after_laundering_alloca_slices(ptr %ptr) {
; CHECK-LABEL: @memcpy_after_laundering_alloca_slices(
; CHECK-NEXT:    [[ALLOCA:%.*]] = alloca { [16 x i8], i64, [16 x i8] }, align 8
; CHECK-NEXT:    [[LAUNDER:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[ALLOCA]])
; CHECK-NEXT:    [[GEP:%.*]] = getelementptr i8, ptr [[LAUNDER]], i64 16
; CHECK-NEXT:    store i64 0, ptr [[GEP]], align 4
; CHECK-NEXT:    call void @llvm.memcpy.p0.p0.i64(ptr [[LAUNDER]], ptr [[PTR:%.*]], i64 40, i1 false)
; CHECK-NEXT:    ret void
;
  %alloca = alloca { [16 x i8], i64, [16 x i8] }, align 8
  %launder = call ptr @llvm.launder.invariant.group.p0(ptr %alloca)
  %gep = getelementptr i8, ptr %launder, i64 16
  store i64 0, ptr %gep
  call void @llvm.memcpy.p0.p0.i64(ptr %launder, ptr %ptr, i64 40, i1 false)
  ret void
}

define void @test_agg_store() {
; CHECK-LABEL: @test_agg_store(
; CHECK-NEXT:    [[STRUCT_PTR:%.*]] = alloca [[T:%.*]], i64 1, align 4
; CHECK-NEXT:    [[STRUCT_PTR_FRESH:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr [[STRUCT_PTR]])
; CHECK-NEXT:    [[STRUCT:%.*]] = call [[T]] @[[MAKE_T:[a-zA-Z0-9_$\"\\.-]*[a-zA-Z_$\"\\.-][a-zA-Z0-9_$\"\\.-]*]]()
; CHECK-NEXT:    store [[T]] [[STRUCT]], ptr [[STRUCT_PTR_FRESH]], align 4, !invariant.group [[META0]]
; CHECK-NEXT:    [[FIRST_PTR:%.*]] = getelementptr [[T]], ptr [[STRUCT_PTR_FRESH]], i32 0, i32 0
; CHECK-NEXT:    [[FIRST:%.*]] = load i32, ptr [[FIRST_PTR]], align 4
; CHECK-NEXT:    [[SECOND_PTR:%.*]] = getelementptr [[T]], ptr [[STRUCT_PTR_FRESH]], i32 0, i32 1
; CHECK-NEXT:    [[SECOND:%.*]] = load i32, ptr [[SECOND_PTR]], align 4
; CHECK-NEXT:    ret void
;
  %struct_ptr = alloca %t, i64 1, align 4
  %struct_ptr_fresh = call ptr @llvm.launder.invariant.group.p0(ptr %struct_ptr)
  %struct = call %t @make_t()
  store %t %struct, ptr %struct_ptr_fresh, align 4, !invariant.group !0
  %first_ptr = getelementptr %t, ptr %struct_ptr_fresh, i32 0, i32 0
  %first = load i32, ptr %first_ptr, align 4
  %second_ptr = getelementptr %t, ptr %struct_ptr_fresh, i32 0, i32 1
  %second = load i32, ptr %second_ptr, align 4
  ret void
}

declare %t @make_t()

declare void @use(ptr)

!0 = !{}
;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
; CHECK-MODIFY-CFG: {{.*}}
; CHECK-PRESERVE-CFG: {{.*}}