llvm/test/Transforms/Attributor/value-simplify-assume.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=4 -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC

@Gstatic_int1 = internal global i32 zeroinitializer, align 4
@Gstatic_int2 = internal global i32 zeroinitializer, align 4

declare void @llvm.assume(i1)
declare void @useI1p(ptr)
declare void @unknown()

;.
; CHECK: @[[GSTATIC_INT1:[a-zA-Z0-9_$"\\.-]+]] = internal global i32 0, align 4
; CHECK: @[[GSTATIC_INT2:[a-zA-Z0-9_$"\\.-]+]] = internal global i32 0, align 4
;.
define i1 @readI1p(ptr %p) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(argmem: read)
; CHECK-LABEL: define {{[^@]+}}@readI1p
; CHECK-SAME: (ptr nocapture nofree noundef nonnull readonly dereferenceable(1) [[P:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[P]], align 1
; CHECK-NEXT:    ret i1 [[L]]
;
  %l = load i1, ptr %p
  ret i1 %l
}

define i1 @keep_assume_1c_nr() norecurse {
; CHECK: Function Attrs: norecurse
; CHECK-LABEL: define {{[^@]+}}@keep_assume_1c_nr
; CHECK-SAME: () #[[ATTR2:[0-9]+]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 true, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L]])
; CHECK-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  call void @useI1p(ptr %stack)
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @drop_assume_1c_nr() norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@drop_assume_1c_nr
; TUNIT-SAME: () #[[ATTR3:[0-9]+]] {
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR6:[0-9]+]]
; TUNIT-NEXT:    ret i1 true
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@drop_assume_1c_nr
; CGSCC-SAME: () #[[ATTR3:[0-9]+]] {
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR7:[0-9]+]]
; CGSCC-NEXT:    ret i1 true
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @keep_assume_2c_nr() norecurse {
; CHECK: Function Attrs: norecurse
; CHECK-LABEL: define {{[^@]+}}@keep_assume_2c_nr
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 true, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L1]])
; CHECK-NEXT:    call void @unknown()
; CHECK-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret i1 [[L2]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  call void @useI1p(ptr %stack)
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  call void @unknown()
  %l2 = load i1, ptr %stack
  ret i1 %l2
}

define i1 @keep_assume_3c_nr() norecurse {
;
; TUNIT: Function Attrs: norecurse
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_3c_nr
; TUNIT-SAME: () #[[ATTR2]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC: Function Attrs: norecurse
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_3c_nr
; CGSCC-SAME: () #[[ATTR2]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr %stack)
  ret i1 %l
}
define i1 @keep_assume_4c_nr() norecurse {
;
; TUNIT: Function Attrs: norecurse
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_4c_nr
; TUNIT-SAME: () #[[ATTR2]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 true
;
; CGSCC: Function Attrs: norecurse
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_4c_nr
; CGSCC-SAME: () #[[ATTR2]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 true
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  call void @useI1p(ptr nocapture %stack)
  ret i1 %l4
}

define i1 @keep_assume_1_nr(i1 %arg) norecurse {
; CHECK: Function Attrs: norecurse
; CHECK-LABEL: define {{[^@]+}}@keep_assume_1_nr
; CHECK-SAME: (i1 [[ARG:%.*]]) #[[ATTR2]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L]])
; CHECK-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  call void @useI1p(ptr %stack)
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @drop_assume_1_nr(i1 %arg) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@drop_assume_1_nr
; TUNIT-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR6]]
; TUNIT-NEXT:    ret i1 [[ARG]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@drop_assume_1_nr
; CGSCC-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[ARG]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @keep_assume_2_nr(i1 %arg) norecurse {
; CHECK: Function Attrs: norecurse
; CHECK-LABEL: define {{[^@]+}}@keep_assume_2_nr
; CHECK-SAME: (i1 [[ARG:%.*]]) #[[ATTR2]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L1]])
; CHECK-NEXT:    call void @unknown()
; CHECK-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret i1 [[L2]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  call void @useI1p(ptr %stack)
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  call void @unknown()
  %l2 = load i1, ptr %stack
  ret i1 %l2
}

define i1 @keep_assume_3_nr(i1 %arg) norecurse {
;
; TUNIT: Function Attrs: norecurse
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_3_nr
; TUNIT-SAME: (i1 [[ARG:%.*]]) #[[ATTR2]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC: Function Attrs: norecurse
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_3_nr
; CGSCC-SAME: (i1 [[ARG:%.*]]) #[[ATTR2]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr %stack)
  ret i1 %l
}

define i1 @keep_assume_4_nr(i1 %arg) norecurse {
;
; TUNIT: Function Attrs: norecurse
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_4_nr
; TUNIT-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR2]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[ARG]]
;
; CGSCC: Function Attrs: norecurse
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_4_nr
; CGSCC-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR2]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[ARG]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr nocapture %stack)
  ret i1 %l
}

define i1 @assume_1_nr(i1 %arg, i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_1_nr
; TUNIT-SAME: (i1 returned [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR6]]
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    ret i1 [[ARG]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_1_nr
; CGSCC-SAME: (i1 returned [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    ret i1 [[ARG]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  ret i1 %l
}

define void @assume_1b_nr(i1 %arg, i1 %cond) norecurse {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@assume_1b_nr
; CHECK-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3:[0-9]+]] {
; CHECK-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       t:
; CHECK-NEXT:    br label [[M:%.*]]
; CHECK:       f:
; CHECK-NEXT:    br label [[M]]
; CHECK:       m:
; CHECK-NEXT:    ret void
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  ret void
}

define i1 @assume_2_nr(i1 %arg, i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_2_nr
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_2_nr
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define void @assume_2b_nr(i1 %arg, i1 %cond) norecurse {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@assume_2b_nr
; CHECK-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       t:
; CHECK-NEXT:    br label [[M:%.*]]
; CHECK:       f:
; CHECK-NEXT:    br label [[M]]
; CHECK:       m:
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret void
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret void
}

define i1 @assume_3_nr(i1 %arg, i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_3_nr
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7:[0-9]+]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_3_nr
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_4_nr(i1 %arg, i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_4_nr
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_4_nr
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_5_nr(i1 %arg, i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_5_nr
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_5_nr
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L1]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  %l2 = load i1, ptr %stack
  call void @llvm.assume(i1 %l2)
  br label %m
f:
  store i1 false, ptr %stack
  %l3 = load i1, ptr %stack
  call void @llvm.assume(i1 %l3)
  br label %m
m:
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_5c_nr(i1 %cond) norecurse {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_5c_nr
; TUNIT-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR6]]
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_5c_nr
; CGSCC-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L1]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  %l2 = load i1, ptr %stack
  call void @llvm.assume(i1 %l2)
  br label %m
f:
  store i1 false, ptr %stack
  %l3 = load i1, ptr %stack
  call void @llvm.assume(i1 %l3)
  br label %m
m:
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}


define i1 @keep_assume_1c() {
; CHECK-LABEL: define {{[^@]+}}@keep_assume_1c() {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 true, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L]])
; CHECK-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  call void @useI1p(ptr %stack)
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @drop_assume_1c() {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@drop_assume_1c
; TUNIT-SAME: () #[[ATTR3]] {
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR6]]
; TUNIT-NEXT:    ret i1 true
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@drop_assume_1c
; CGSCC-SAME: () #[[ATTR3]] {
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 true
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @keep_assume_2c() {
; CHECK-LABEL: define {{[^@]+}}@keep_assume_2c() {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 true, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L1]])
; CHECK-NEXT:    call void @unknown()
; CHECK-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret i1 [[L2]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  call void @useI1p(ptr %stack)
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  call void @unknown()
  %l2 = load i1, ptr %stack
  ret i1 %l2
}

define i1 @keep_assume_3c() {
;
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_3c() {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_3c() {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr %stack)
  ret i1 %l
}
define i1 @keep_assume_4c() {
;
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_4c() {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L4]]
;
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_4c() {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L4]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  call void @useI1p(ptr nocapture %stack)
  ret i1 %l4
}

define i1 @keep_assume_1(i1 %arg) {
; CHECK-LABEL: define {{[^@]+}}@keep_assume_1
; CHECK-SAME: (i1 [[ARG:%.*]]) {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L]])
; CHECK-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  call void @useI1p(ptr %stack)
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @drop_assume_1(i1 %arg) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@drop_assume_1
; TUNIT-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR6]]
; TUNIT-NEXT:    ret i1 [[ARG]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@drop_assume_1
; CGSCC-SAME: (i1 returned [[ARG:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[ARG]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define i1 @keep_assume_2(i1 %arg) {
; CHECK-LABEL: define {{[^@]+}}@keep_assume_2
; CHECK-SAME: (i1 [[ARG:%.*]]) {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CHECK-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    call void @llvm.assume(i1 noundef [[L1]])
; CHECK-NEXT:    call void @unknown()
; CHECK-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret i1 [[L2]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  call void @useI1p(ptr %stack)
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  call void @unknown()
  %l2 = load i1, ptr %stack
  ret i1 %l2
}

define i1 @keep_assume_3(i1 %arg) {
;
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_3
; TUNIT-SAME: (i1 [[ARG:%.*]]) {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_3
; CGSCC-SAME: (i1 [[ARG:%.*]]) {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr %stack)
  ret i1 %l
}

define i1 @keep_assume_4(i1 %arg) {
;
; TUNIT-LABEL: define {{[^@]+}}@keep_assume_4
; TUNIT-SAME: (i1 [[ARG:%.*]]) {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC-LABEL: define {{[^@]+}}@keep_assume_4
; CGSCC-SAME: (i1 [[ARG:%.*]]) {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    call void @useI1p(ptr noalias nocapture noundef nonnull dereferenceable(1) [[STACK]])
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  call void @useI1p(ptr nocapture %stack)
  ret i1 %l
}

define i1 @assume_1(i1 %arg, i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_1
; TUNIT-SAME: (i1 returned [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR6]]
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    ret i1 [[ARG]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_1
; CGSCC-SAME: (i1 returned [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[ARG]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    ret i1 [[ARG]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  ret i1 %l
}

define void @assume_1b(i1 %arg, i1 %cond) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@assume_1b
; CHECK-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CHECK-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       t:
; CHECK-NEXT:    br label [[M:%.*]]
; CHECK:       f:
; CHECK-NEXT:    br label [[M]]
; CHECK:       m:
; CHECK-NEXT:    ret void
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  ret void
}

define i1 @assume_2(i1 %arg, i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_2
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    ret i1 [[L]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_2
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[L]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret i1 %l
}

define void @assume_2b(i1 %arg, i1 %cond) {
; CHECK: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@assume_2b
; CHECK-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; CHECK-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CHECK-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CHECK:       t:
; CHECK-NEXT:    br label [[M:%.*]]
; CHECK:       f:
; CHECK-NEXT:    br label [[M]]
; CHECK:       m:
; CHECK-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CHECK-NEXT:    ret void
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  ret void
}

define i1 @assume_3(i1 %arg, i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_3
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_3
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR4:[0-9]+]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_4(i1 %arg, i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_4
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_4
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR4]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  br label %m
f:
  store i1 false, ptr %stack
  br label %m
m:
  %l = load i1, ptr %stack
  call void @llvm.assume(i1 %l)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_5(i1 %arg, i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_5
; TUNIT-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_5
; CGSCC-SAME: (i1 [[ARG:%.*]], i1 noundef [[COND:%.*]]) #[[ATTR4]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 [[ARG]], ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L1]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 %arg, ptr %stack
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  %l2 = load i1, ptr %stack
  call void @llvm.assume(i1 %l2)
  br label %m
f:
  store i1 false, ptr %stack
  %l3 = load i1, ptr %stack
  call void @llvm.assume(i1 %l3)
  br label %m
m:
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i1 @assume_5c(i1 %cond) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@assume_5c
; TUNIT-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR3]] {
; TUNIT-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef true) #[[ATTR6]]
; TUNIT-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; TUNIT:       t:
; TUNIT-NEXT:    store i1 true, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M:%.*]]
; TUNIT:       f:
; TUNIT-NEXT:    store i1 false, ptr [[STACK]], align 1
; TUNIT-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR6]]
; TUNIT-NEXT:    br label [[M]]
; TUNIT:       m:
; TUNIT-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR6]]
; TUNIT-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; TUNIT-NEXT:    ret i1 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@assume_5c
; CGSCC-SAME: (i1 noundef [[COND:%.*]]) #[[ATTR4]] {
; CGSCC-NEXT:    [[STACK:%.*]] = alloca i1, align 1
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L1:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L1]]) #[[ATTR7]]
; CGSCC-NEXT:    br i1 [[COND]], label [[T:%.*]], label [[F:%.*]]
; CGSCC:       t:
; CGSCC-NEXT:    store i1 true, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L2:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L2]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M:%.*]]
; CGSCC:       f:
; CGSCC-NEXT:    store i1 false, ptr [[STACK]], align 1
; CGSCC-NEXT:    [[L3:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L3]]) #[[ATTR7]]
; CGSCC-NEXT:    br label [[M]]
; CGSCC:       m:
; CGSCC-NEXT:    [[L4:%.*]] = load i1, ptr [[STACK]], align 1
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[L4]]) #[[ATTR7]]
; CGSCC-NEXT:    [[R:%.*]] = call i1 @readI1p(ptr noalias nocapture nofree noundef nonnull readonly dereferenceable(1) [[STACK]]) #[[ATTR7]]
; CGSCC-NEXT:    ret i1 [[R]]
;
  %stack = alloca i1
  store i1 true, ptr %stack
  %l1 = load i1, ptr %stack
  call void @llvm.assume(i1 %l1)
  br i1 %cond, label %t, label %f
t:
  store i1 true, ptr %stack
  %l2 = load i1, ptr %stack
  call void @llvm.assume(i1 %l2)
  br label %m
f:
  store i1 false, ptr %stack
  %l3 = load i1, ptr %stack
  call void @llvm.assume(i1 %l3)
  br label %m
m:
  %l4 = load i1, ptr %stack
  call void @llvm.assume(i1 %l4)
  %r = call i1 @readI1p(ptr %stack)
  ret i1 %r
}

define i32 @assume_read_global_good() {
;
;
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn
; TUNIT-LABEL: define {{[^@]+}}@assume_read_global_good
; TUNIT-SAME: () #[[ATTR4:[0-9]+]] {
; TUNIT-NEXT:    [[LGS1:%.*]] = load i32, ptr @Gstatic_int1, align 4
; TUNIT-NEXT:    [[C:%.*]] = icmp eq i32 [[LGS1]], 42
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[C]]) #[[ATTR6]]
; TUNIT-NEXT:    [[LGS2:%.*]] = load i32, ptr @Gstatic_int1, align 4
; TUNIT-NEXT:    store i32 17, ptr @Gstatic_int1, align 4
; TUNIT-NEXT:    [[LGS3:%.*]] = load i32, ptr @Gstatic_int1, align 4
; TUNIT-NEXT:    [[ADD:%.*]] = add i32 [[LGS2]], [[LGS3]]
; TUNIT-NEXT:    ret i32 [[ADD]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn
; CGSCC-LABEL: define {{[^@]+}}@assume_read_global_good
; CGSCC-SAME: () #[[ATTR5:[0-9]+]] {
; CGSCC-NEXT:    [[LGS1:%.*]] = load i32, ptr @Gstatic_int1, align 4
; CGSCC-NEXT:    [[C:%.*]] = icmp eq i32 [[LGS1]], 42
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[C]]) #[[ATTR7]]
; CGSCC-NEXT:    [[LGS2:%.*]] = load i32, ptr @Gstatic_int1, align 4
; CGSCC-NEXT:    store i32 17, ptr @Gstatic_int1, align 4
; CGSCC-NEXT:    [[LGS3:%.*]] = load i32, ptr @Gstatic_int1, align 4
; CGSCC-NEXT:    [[ADD:%.*]] = add i32 [[LGS2]], [[LGS3]]
; CGSCC-NEXT:    ret i32 [[ADD]]
;
  %lgs1 = load i32, ptr @Gstatic_int1
  %c = icmp eq i32 %lgs1, 42
  call void @llvm.assume(i1 %c)
  %lgs2 = load i32, ptr @Gstatic_int1
  store i32 13, ptr @Gstatic_int1, align 4
  store i32 17, ptr @Gstatic_int1, align 4
  %lgs3 = load i32, ptr @Gstatic_int1
  %add = add i32 %lgs2, %lgs3
  ret i32 %add
}

; TODO: Technically we could still utilize the assumption if we employ AA.
define i32 @assume_read_global_bad(ptr %p) {
;
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn
; TUNIT-LABEL: define {{[^@]+}}@assume_read_global_bad
; TUNIT-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P:%.*]]) #[[ATTR4]] {
; TUNIT-NEXT:    [[LGS1:%.*]] = load i32, ptr @Gstatic_int2, align 4
; TUNIT-NEXT:    [[C:%.*]] = icmp eq i32 [[LGS1]], 42
; TUNIT-NEXT:    store i32 13, ptr [[P]], align 4
; TUNIT-NEXT:    call void @llvm.assume(i1 noundef [[C]]) #[[ATTR6]]
; TUNIT-NEXT:    [[LGS2:%.*]] = load i32, ptr @Gstatic_int2, align 4
; TUNIT-NEXT:    store i32 17, ptr @Gstatic_int2, align 4
; TUNIT-NEXT:    ret i32 [[LGS2]]
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn
; CGSCC-LABEL: define {{[^@]+}}@assume_read_global_bad
; CGSCC-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P:%.*]]) #[[ATTR5]] {
; CGSCC-NEXT:    [[LGS1:%.*]] = load i32, ptr @Gstatic_int2, align 4
; CGSCC-NEXT:    [[C:%.*]] = icmp eq i32 [[LGS1]], 42
; CGSCC-NEXT:    store i32 13, ptr [[P]], align 4
; CGSCC-NEXT:    call void @llvm.assume(i1 noundef [[C]]) #[[ATTR7]]
; CGSCC-NEXT:    [[LGS2:%.*]] = load i32, ptr @Gstatic_int2, align 4
; CGSCC-NEXT:    store i32 17, ptr @Gstatic_int2, align 4
; CGSCC-NEXT:    ret i32 [[LGS2]]
;
  %lgs1 = load i32, ptr @Gstatic_int2
  %c = icmp eq i32 %lgs1, 42
  store i32 13, ptr %p, align 4
  call void @llvm.assume(i1 %c)
  %lgs2 = load i32, ptr @Gstatic_int2
  store i32 17, ptr @Gstatic_int2, align 4
  ret i32 %lgs2
}

define void @assume_write_globals() {
;
; TUNIT: Function Attrs: nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@assume_write_globals
; TUNIT-SAME: () #[[ATTR5:[0-9]+]] {
; TUNIT-NEXT:    store i32 42, ptr @Gstatic_int1, align 4
; TUNIT-NEXT:    store i32 42, ptr @Gstatic_int2, align 4
; TUNIT-NEXT:    ret void
;
; CGSCC: Function Attrs: nofree norecurse nosync nounwind willreturn memory(write)
; CGSCC-LABEL: define {{[^@]+}}@assume_write_globals
; CGSCC-SAME: () #[[ATTR6:[0-9]+]] {
; CGSCC-NEXT:    store i32 42, ptr @Gstatic_int1, align 4
; CGSCC-NEXT:    store i32 42, ptr @Gstatic_int2, align 4
; CGSCC-NEXT:    ret void
;
  store i32 42, ptr @Gstatic_int1, align 4
  store i32 42, ptr @Gstatic_int2, align 4
  ret void
}

;.
; TUNIT: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
; TUNIT: attributes #[[ATTR1]] = { nofree norecurse nosync nounwind willreturn memory(argmem: read) }
; TUNIT: attributes #[[ATTR2]] = { norecurse }
; TUNIT: attributes #[[ATTR3]] = { nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
; TUNIT: attributes #[[ATTR4]] = { nofree norecurse nosync nounwind willreturn }
; TUNIT: attributes #[[ATTR5]] = { nofree norecurse nosync nounwind willreturn memory(write) }
; TUNIT: attributes #[[ATTR6]] = { willreturn }
; TUNIT: attributes #[[ATTR7]] = { nofree nosync nounwind willreturn }
;.
; CGSCC: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
; CGSCC: attributes #[[ATTR1]] = { nofree norecurse nosync nounwind willreturn memory(argmem: read) }
; CGSCC: attributes #[[ATTR2]] = { norecurse }
; CGSCC: attributes #[[ATTR3]] = { nofree norecurse nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
; CGSCC: attributes #[[ATTR4]] = { nofree nosync nounwind willreturn memory(inaccessiblemem: readwrite) }
; CGSCC: attributes #[[ATTR5]] = { nofree norecurse nosync nounwind willreturn }
; CGSCC: attributes #[[ATTR6]] = { nofree norecurse nosync nounwind willreturn memory(write) }
; CGSCC: attributes #[[ATTR7]] = { willreturn }
;.