llvm/test/Transforms/Attributor/callbacks.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
; RUN: opt -attributor -attributor-manifest-internal  -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=3 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal  -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=3 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
; RUN: opt -attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal  -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM

target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"

; Test 0
;
; Make sure we propagate information from the caller to the callback callee but
; only for arguments that are mapped through the callback metadata. Here, the
; first two arguments of the call and the callback callee do not correspond to
; each other but argument 3-5 of the transitive call site in the caller match
; arguments 2-4 of the callback callee. Here we should see information and value
; transfer in both directions.

define void @t0_caller(i32* %a) {
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@t0_caller
; IS__TUNIT_OPM-SAME: (i32* align 256 [[A:%.*]])
; IS__TUNIT_OPM-NEXT:  entry:
; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture align 536870912 null, i32* nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_OPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t0_caller
; IS__TUNIT_NPM-SAME: (i32* align 256 [[A:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture align 536870912 null, i32* nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 undef, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_NPM-NEXT:    ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t0_caller
; IS__CGSCC_OPM-SAME: (i32* align 256 [[A:%.*]])
; IS__CGSCC_OPM-NEXT:  entry:
; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture align 536870912 null, i32* nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 99, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_OPM-NEXT:    ret void
;
; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t0_caller
; IS__CGSCC_NPM-SAME: (i32* align 256 [[A:%.*]])
; IS__CGSCC_NPM-NEXT:  entry:
; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* noalias nocapture align 536870912 null, i32* nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* align 256 [[A]], i64 99, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_NPM-NEXT:    ret void
;
entry:
  %b = alloca i32, align 32
  %c = alloca i32*, align 64
  %ptr = alloca i32, align 128
  %0 = bitcast i32* %b to i8*
  store i32 42, i32* %b, align 4
  store i32* %b, i32** %c, align 8
  call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t0_callback_broker(i32* null, i32* %ptr, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t0_callback_callee to void (i32*, i32*, ...)*), i32* %a, i64 99, i32** %c)
  ret void
}

; Note that the first two arguments are provided by the callback_broker according to the callback in !1 below!
; The others are annotated with alignment information, amongst others, or even replaced by the constants passed to the call.
define internal void @t0_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
;
; NOT_TUNIT_NPM-LABEL: define {{[^@]+}}@t0_callback_callee
; NOT_TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; NOT_TUNIT_NPM-NEXT:  entry:
; NOT_TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; NOT_TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; NOT_TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; NOT_TUNIT_NPM-NEXT:    tail call void @t0_check(i32* align 256 [[A]], i64 99, i32* [[TMP0]])
; NOT_TUNIT_NPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t0_callback_callee
; IS__TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; IS__TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    tail call void @t0_check(i32* align 256 [[A]], i64 99, i32* [[TMP0]])
; IS__TUNIT_NPM-NEXT:    ret void
;
entry:
  %ptr_val = load i32, i32* %ptr, align 8
  store i32 %ptr_val, i32* %is_not_null
  %0 = load i32*, i32** %c, align 8
  tail call void @t0_check(i32* %a, i64 %b, i32* %0)
  ret void
}

declare void @t0_check(i32* align 256, i64, i32*)

declare !callback !0 void @t0_callback_broker(i32*, i32*, void (i32*, i32*, ...)*, ...)

; Test 1
;
; Similar to test 0 but with some additional annotations (noalias/nocapute) to make sure
; we deduce and propagate noalias and others properly.

define void @t1_caller(i32* noalias %a) {
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@t1_caller
; IS__TUNIT_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_OPM-NEXT:  entry:
; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_OPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t1_caller
; IS__TUNIT_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 undef, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_NPM-NEXT:    ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t1_caller
; IS__CGSCC_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_OPM-NEXT:  entry:
; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 99, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_OPM-NEXT:    ret void
;
; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t1_caller
; IS__CGSCC_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_NPM-NEXT:  entry:
; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 99, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_NPM-NEXT:    ret void
;
entry:
  %b = alloca i32, align 32
  %c = alloca i32*, align 64
  %ptr = alloca i32, align 128
  %0 = bitcast i32* %b to i8*
  store i32 42, i32* %b, align 4
  store i32* %b, i32** %c, align 8
  call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t1_callback_broker(i32* null, i32* %ptr, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t1_callback_callee to void (i32*, i32*, ...)*), i32* %a, i64 99, i32** %c)
  ret void
}

; Note that the first two arguments are provided by the callback_broker according to the callback in !1 below!
; The others are annotated with alignment information, amongst others, or even replaced by the constants passed to the call.
define internal void @t1_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
;
; NOT_TUNIT_NPM-LABEL: define {{[^@]+}}@t1_callback_callee
; NOT_TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; NOT_TUNIT_NPM-NEXT:  entry:
; NOT_TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; NOT_TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; NOT_TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; NOT_TUNIT_NPM-NEXT:    tail call void @t1_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; NOT_TUNIT_NPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t1_callback_callee
; IS__TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* noalias nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; IS__TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    tail call void @t1_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; IS__TUNIT_NPM-NEXT:    ret void
;
entry:
  %ptr_val = load i32, i32* %ptr, align 8
  store i32 %ptr_val, i32* %is_not_null
  %0 = load i32*, i32** %c, align 8
  tail call void @t1_check(i32* %a, i64 %b, i32* %0)
  ret void
}

declare void @t1_check(i32* nocapture align 256, i64, i32* nocapture) nosync

declare !callback !0 void @t1_callback_broker(i32* nocapture , i32* nocapture , void (i32*, i32*, ...)* nocapture, ...)

; Test 2
;
; Similar to test 1 but checking that the noalias is only placed if potential synchronization through @t2_check is preserved.

define void @t2_caller(i32* noalias %a) {
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@t2_caller
; IS__TUNIT_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_OPM-NEXT:  entry:
; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_OPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t2_caller
; IS__TUNIT_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 undef, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_NPM-NEXT:    ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t2_caller
; IS__CGSCC_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_OPM-NEXT:  entry:
; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 99, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_OPM-NEXT:    ret void
;
; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t2_caller
; IS__CGSCC_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_NPM-NEXT:  entry:
; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 99, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_NPM-NEXT:    ret void
;
entry:
  %b = alloca i32, align 32
  %c = alloca i32*, align 64
  %ptr = alloca i32, align 128
  %0 = bitcast i32* %b to i8*
  store i32 42, i32* %b, align 4
  store i32* %b, i32** %c, align 8
  call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t2_callback_broker(i32* null, i32* %ptr, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t2_callback_callee to void (i32*, i32*, ...)*), i32* %a, i64 99, i32** %c)
  ret void
}

; Note that the first two arguments are provided by the callback_broker according to the callback in !1 below!
; The others are annotated with alignment information, amongst others, or even replaced by the constants passed to the call.
;
; FIXME: We should derive noalias for %a and add a "fake use" of %a in all potentially synchronizing calls.
define internal void @t2_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
;
; NOT_TUNIT_NPM-LABEL: define {{[^@]+}}@t2_callback_callee
; NOT_TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; NOT_TUNIT_NPM-NEXT:  entry:
; NOT_TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; NOT_TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; NOT_TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; NOT_TUNIT_NPM-NEXT:    tail call void @t2_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; NOT_TUNIT_NPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t2_callback_callee
; IS__TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; IS__TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    tail call void @t2_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; IS__TUNIT_NPM-NEXT:    ret void
;
entry:
  %ptr_val = load i32, i32* %ptr, align 8
  store i32 %ptr_val, i32* %is_not_null
  %0 = load i32*, i32** %c, align 8
  tail call void @t2_check(i32* %a, i64 %b, i32* %0)
  ret void
}

declare void @t2_check(i32* nocapture align 256, i64, i32* nocapture)

declare !callback !0 void @t2_callback_broker(i32* nocapture , i32* nocapture , void (i32*, i32*, ...)* nocapture, ...)

; Test 3
;
; Basically test 2 with the casted callback callee used twice.

define void @t3_caller(i32* noalias %a) {
; IS__TUNIT_OPM-LABEL: define {{[^@]+}}@t3_caller
; IS__TUNIT_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_OPM-NEXT:  entry:
; IS__TUNIT_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 undef, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_OPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t3_caller
; IS__TUNIT_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__TUNIT_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__TUNIT_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__TUNIT_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__TUNIT_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 undef, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture nonnull bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 undef, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__TUNIT_NPM-NEXT:    ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@t3_caller
; IS__CGSCC_OPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_OPM-NEXT:  entry:
; IS__CGSCC_OPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_OPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_OPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_OPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_OPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_OPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 99, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_OPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* nocapture align 256 [[A]], i64 99, i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_OPM-NEXT:    ret void
;
; IS__CGSCC_NPM-LABEL: define {{[^@]+}}@t3_caller
; IS__CGSCC_NPM-SAME: (i32* noalias nocapture align 256 [[A:%.*]])
; IS__CGSCC_NPM-NEXT:  entry:
; IS__CGSCC_NPM-NEXT:    [[B:%.*]] = alloca i32, align 32
; IS__CGSCC_NPM-NEXT:    [[C:%.*]] = alloca i32*, align 64
; IS__CGSCC_NPM-NEXT:    [[PTR:%.*]] = alloca i32, align 128
; IS__CGSCC_NPM-NEXT:    [[TMP0:%.*]] = bitcast i32* [[B]] to i8*
; IS__CGSCC_NPM-NEXT:    store i32 42, i32* [[B]], align 32
; IS__CGSCC_NPM-NEXT:    store i32* [[B]], i32** [[C]], align 64
; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 99, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_NPM-NEXT:    call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* noalias nocapture align 536870912 null, i32* noalias nocapture nonnull align 128 dereferenceable(4) [[PTR]], void (i32*, i32*, ...)* nocapture bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* noalias nocapture align 256 [[A]], i64 99, i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C]])
; IS__CGSCC_NPM-NEXT:    ret void
;
entry:
  %b = alloca i32, align 32
  %c = alloca i32*, align 64
  %ptr = alloca i32, align 128
  %0 = bitcast i32* %b to i8*
  store i32 42, i32* %b, align 4
  store i32* %b, i32** %c, align 8
  call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* null, i32* %ptr, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* %a, i64 99, i32** %c)
  call void (i32*, i32*, void (i32*, i32*, ...)*, ...) @t3_callback_broker(i32* null, i32* %ptr, void (i32*, i32*, ...)* bitcast (void (i32*, i32*, i32*, i64, i32**)* @t3_callback_callee to void (i32*, i32*, ...)*), i32* %a, i64 99, i32** %c)
  ret void
}

; Note that the first two arguments are provided by the callback_broker according to the callback in !1 below!
; The others are annotated with alignment information, amongst others, or even replaced by the constants passed to the call.
;
; FIXME: We should derive noalias for %a and add a "fake use" of %a in all potentially synchronizing calls.
define internal void @t3_callback_callee(i32* %is_not_null, i32* %ptr, i32* %a, i64 %b, i32** %c) {
;
; NOT_TUNIT_NPM-LABEL: define {{[^@]+}}@t3_callback_callee
; NOT_TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; NOT_TUNIT_NPM-NEXT:  entry:
; NOT_TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; NOT_TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; NOT_TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; NOT_TUNIT_NPM-NEXT:    tail call void @t3_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; NOT_TUNIT_NPM-NEXT:    ret void
;
; IS__TUNIT_NPM-LABEL: define {{[^@]+}}@t3_callback_callee
; IS__TUNIT_NPM-SAME: (i32* nocapture nonnull writeonly align 4 dereferenceable(4) [[IS_NOT_NULL:%.*]], i32* nocapture nonnull readonly align 8 dereferenceable(4) [[PTR:%.*]], i32* nocapture align 256 [[A:%.*]], i64 [[B:%.*]], i32** noalias nocapture nonnull readonly align 64 dereferenceable(8) [[C:%.*]])
; IS__TUNIT_NPM-NEXT:  entry:
; IS__TUNIT_NPM-NEXT:    [[PTR_VAL:%.*]] = load i32, i32* [[PTR]], align 8
; IS__TUNIT_NPM-NEXT:    store i32 [[PTR_VAL]], i32* [[IS_NOT_NULL]], align 4
; IS__TUNIT_NPM-NEXT:    [[TMP0:%.*]] = load i32*, i32** [[C]], align 64
; IS__TUNIT_NPM-NEXT:    tail call void @t3_check(i32* nocapture align 256 [[A]], i64 99, i32* nocapture [[TMP0]])
; IS__TUNIT_NPM-NEXT:    ret void
;
entry:
  %ptr_val = load i32, i32* %ptr, align 8
  store i32 %ptr_val, i32* %is_not_null
  %0 = load i32*, i32** %c, align 8
  tail call void @t3_check(i32* %a, i64 %b, i32* %0)
  ret void
}

declare void @t3_check(i32* nocapture align 256, i64, i32* nocapture)

declare !callback !0 void @t3_callback_broker(i32* nocapture , i32* nocapture , void (i32*, i32*, ...)* nocapture, ...)

!0 = !{!1}
!1 = !{i64 2, i64 -1, i64 -1, i1 true}