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dda73336ad22bd0b5ecda17040c50fb10fcbe5fb
clang-p2996/llvm/test/Transforms/Attributor/memory_locations.ll
luxufan 4e84ec8184 [ValueTracking] Dereferenceable ret attributes implys noundef 
Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D156510
2023-08-07 15:11:03 +08:00

780 lines
33 KiB
LLVM
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; 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-annotate-decl-cs -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
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
@G = external dso_local global i32, align 4
declare noalias ptr @malloc(i64) inaccessiblememonly
;.
; CHECK: @[[G:[a-zA-Z0-9_$"\\.-]+]] = external dso_local global i32, align 4
;.
define dso_local ptr @internal_only(i32 %arg) {
; CHECK: Function Attrs: memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_only
; CHECK-SAME: (i32 [[ARG:%.*]]) #[[ATTR0:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[ARG]] to i64
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
%conv = sext i32 %arg to i64
%call = call ptr @malloc(i64 %conv)
ret ptr %call
}
define dso_local ptr @internal_only_rec(i32 %arg) {
; CHECK: Function Attrs: memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_only_rec
; CHECK-SAME: (i32 [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[REM:%.*]] = srem i32 [[ARG]], 2
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[REM]], 1
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[DIV:%.*]] = sdiv i32 [[ARG]], 2
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_only_rec(i32 [[DIV]])
; CHECK-NEXT: br label [[RETURN:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[ARG]] to i64
; CHECK-NEXT: [[CALL1:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ [[CALL]], [[IF_THEN]] ], [ [[CALL1]], [[IF_END]] ]
; CHECK-NEXT: ret ptr [[RETVAL_0]]
;
entry:
%rem = srem i32 %arg, 2
%cmp = icmp eq i32 %rem, 1
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%div = sdiv i32 %arg, 2
%call = call ptr @internal_only_rec(i32 %div)
br label %return
if.end: ; preds = %entry
%conv = sext i32 %arg to i64
%call1 = call ptr @malloc(i64 %conv)
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi ptr [ %call, %if.then ], [ %call1, %if.end ]
ret ptr %retval.0
}
define dso_local ptr @internal_only_rec_static_helper(i32 %arg) {
; CHECK: Function Attrs: memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_only_rec_static_helper
; CHECK-SAME: (i32 [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_only_rec_static(i32 [[ARG]])
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
%call = call ptr @internal_only_rec_static(i32 %arg)
ret ptr %call
}
define internal ptr @internal_only_rec_static(i32 %arg) {
; CHECK: Function Attrs: memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_only_rec_static
; CHECK-SAME: (i32 [[ARG:%.*]]) #[[ATTR0]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[REM:%.*]] = srem i32 [[ARG]], 2
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[REM]], 1
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[DIV:%.*]] = sdiv i32 [[ARG]], 2
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_only_rec(i32 [[DIV]])
; CHECK-NEXT: br label [[RETURN:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[ARG]] to i64
; CHECK-NEXT: [[CALL1:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ [[CALL]], [[IF_THEN]] ], [ [[CALL1]], [[IF_END]] ]
; CHECK-NEXT: ret ptr [[RETVAL_0]]
;
entry:
%rem = srem i32 %arg, 2
%cmp = icmp eq i32 %rem, 1
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%div = sdiv i32 %arg, 2
%call = call ptr @internal_only_rec(i32 %div)
br label %return
if.end: ; preds = %entry
%conv = sext i32 %arg to i64
%call1 = call ptr @malloc(i64 %conv)
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi ptr [ %call, %if.then ], [ %call1, %if.end ]
ret ptr %retval.0
}
define dso_local ptr @internal_only_rec_static_helper_malloc_noescape(i32 %arg) {
; FIXME: This is actually inaccessiblememonly because the malloced memory does not escape
; CHECK-LABEL: define {{[^@]+}}@internal_only_rec_static_helper_malloc_noescape
; CHECK-SAME: (i32 [[ARG:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_only_rec_static_malloc_noescape(i32 [[ARG]])
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
%call = call ptr @internal_only_rec_static_malloc_noescape(i32 %arg)
ret ptr %call
}
define internal ptr @internal_only_rec_static_malloc_noescape(i32 %arg) {
; FIXME: This is actually inaccessiblememonly because the malloced memory does not escape
; CHECK-LABEL: define {{[^@]+}}@internal_only_rec_static_malloc_noescape
; CHECK-SAME: (i32 [[ARG:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[REM:%.*]] = srem i32 [[ARG]], 2
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[REM]], 1
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: [[DIV:%.*]] = sdiv i32 [[ARG]], 2
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_only_rec(i32 [[DIV]])
; CHECK-NEXT: br label [[RETURN:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[ARG]] to i64
; CHECK-NEXT: [[CALL1:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ [[CALL]], [[IF_THEN]] ], [ null, [[IF_END]] ]
; CHECK-NEXT: ret ptr [[RETVAL_0]]
;
entry:
%rem = srem i32 %arg, 2
%cmp = icmp eq i32 %rem, 1
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
%div = sdiv i32 %arg, 2
%call = call ptr @internal_only_rec(i32 %div)
br label %return
if.end: ; preds = %entry
%conv = sext i32 %arg to i64
%call1 = call ptr @malloc(i64 %conv)
store i8 0, ptr %call1
br label %return
return: ; preds = %if.end, %if.then
%retval.0 = phi ptr [ %call, %if.then ], [ null, %if.end ]
ret ptr %retval.0
}
define dso_local ptr @internal_argmem_only_read(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_argmem_only_read
; CHECK-SAME: (ptr nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP:%.*]] = load i32, ptr [[ARG]], align 4
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TMP]] to i64
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
%tmp = load i32, ptr %arg, align 4
%conv = sext i32 %tmp to i64
%call = call ptr @malloc(i64 %conv)
ret ptr %call
}
define dso_local ptr @internal_argmem_only_write(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_argmem_only_write
; CHECK-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 10, ptr [[ARG]], align 4
; CHECK-NEXT: [[CALL:%.*]] = call noalias noundef dereferenceable_or_null(10) ptr @malloc(i64 noundef 10)
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
store i32 10, ptr %arg, align 4
%call = call dereferenceable_or_null(10) ptr @malloc(i64 10)
ret ptr %call
}
define dso_local ptr @internal_argmem_only_rec(ptr %arg) {
; TUNIT: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; TUNIT-LABEL: define {{[^@]+}}@internal_argmem_only_rec
; TUNIT-SAME: (ptr nocapture nofree [[ARG:%.*]]) #[[ATTR1]] {
; TUNIT-NEXT: entry:
; TUNIT-NEXT: [[CALL:%.*]] = call noalias ptr @internal_argmem_only_rec_1(ptr nocapture nofree noundef align 4 [[ARG]])
; TUNIT-NEXT: ret ptr [[CALL]]
;
; CGSCC: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CGSCC-LABEL: define {{[^@]+}}@internal_argmem_only_rec
; CGSCC-SAME: (ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR1]] {
; CGSCC-NEXT: entry:
; CGSCC-NEXT: [[CALL:%.*]] = call noalias ptr @internal_argmem_only_rec_1(ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ARG]])
; CGSCC-NEXT: ret ptr [[CALL]]
;
entry:
%call = call ptr @internal_argmem_only_rec_1(ptr %arg)
ret ptr %call
}
define internal ptr @internal_argmem_only_rec_1(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_argmem_only_rec_1
; CHECK-SAME: (ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP:%.*]] = load i32, ptr [[ARG]], align 4
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP]], 0
; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_END:%.*]]
; CHECK: if.then:
; CHECK-NEXT: br label [[RETURN:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[TRUETMP1:%.*]] = load i32, ptr [[ARG]], align 4
; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[TRUETMP1]], 1
; CHECK-NEXT: br i1 [[CMP1]], label [[IF_THEN2:%.*]], label [[IF_END3:%.*]]
; CHECK: if.then2:
; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARG]], i64 -1
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_argmem_only_rec_2(ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ADD_PTR]])
; CHECK-NEXT: br label [[RETURN]]
; CHECK: if.end3:
; CHECK-NEXT: [[TRUETMP2:%.*]] = load i32, ptr [[ARG]], align 4
; CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TRUETMP2]] to i64
; CHECK-NEXT: [[CALL4:%.*]] = call noalias ptr @malloc(i64 [[CONV]])
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[RETVAL_0:%.*]] = phi ptr [ null, [[IF_THEN]] ], [ [[CALL]], [[IF_THEN2]] ], [ [[CALL4]], [[IF_END3]] ]
; CHECK-NEXT: ret ptr [[RETVAL_0]]
;
entry:
%tmp = load i32, ptr %arg, align 4
%cmp = icmp eq i32 %tmp, 0
br i1 %cmp, label %if.then, label %if.end
if.then: ; preds = %entry
br label %return
if.end: ; preds = %entry
%tmp1 = load i32, ptr %arg, align 4
%cmp1 = icmp eq i32 %tmp1, 1
br i1 %cmp1, label %if.then2, label %if.end3
if.then2: ; preds = %if.end
%add.ptr = getelementptr inbounds i32, ptr %arg, i64 -1
%call = call ptr @internal_argmem_only_rec_2(ptr nonnull %add.ptr)
br label %return
if.end3: ; preds = %if.end
%tmp2 = load i32, ptr %arg, align 4
%conv = sext i32 %tmp2 to i64
%call4 = call ptr @malloc(i64 %conv)
br label %return
return: ; preds = %if.end3, %if.then2, %if.then
%retval.0 = phi ptr [ null, %if.then ], [ %call, %if.then2 ], [ %call4, %if.end3 ]
ret ptr %retval.0
}
define internal ptr @internal_argmem_only_rec_2(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@internal_argmem_only_rec_2
; CHECK-SAME: (ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: store i32 0, ptr [[ARG]], align 4
; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARG]], i64 -1
; CHECK-NEXT: [[CALL:%.*]] = call noalias ptr @internal_argmem_only_rec_1(ptr nocapture nofree noundef nonnull align 4 dereferenceable(4) [[ADD_PTR]])
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
store i32 0, ptr %arg, align 4
%add.ptr = getelementptr inbounds i32, ptr %arg, i64 -1
%call = call ptr @internal_argmem_only_rec_1(ptr nonnull %add.ptr)
ret ptr %call
}
declare ptr @unknown_ptr() readnone
declare ptr @argmem_only(ptr %arg) argmemonly
declare ptr @inaccesible_argmem_only_decl(ptr %arg) inaccessiblemem_or_argmemonly
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) nounwind argmemonly willreturn
define void @callerA1(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@callerA1
; CHECK-SAME: (ptr [[ARG:%.*]]) #[[ATTR3:[0-9]+]] {
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @argmem_only(ptr [[ARG]])
; CHECK-NEXT: ret void
;
call ptr @argmem_only(ptr %arg)
ret void
}
define void @callerA2(ptr %arg) {
; CHECK: Function Attrs: memory(argmem: readwrite, inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@callerA2
; CHECK-SAME: (ptr [[ARG:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @inaccesible_argmem_only_decl(ptr [[ARG]])
; CHECK-NEXT: ret void
;
call ptr @inaccesible_argmem_only_decl(ptr %arg)
ret void
}
define void @callerB1() {
; CHECK: Function Attrs: memory(none)
; CHECK-LABEL: define {{[^@]+}}@callerB1
; CHECK-SAME: () #[[ATTR2:[0-9]+]] {
; CHECK-NEXT: [[STACK:%.*]] = alloca i8, align 1
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @argmem_only(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT: ret void
;
%stack = alloca i8
call ptr @argmem_only(ptr %stack)
ret void
}
define void @callerB2() {
; CHECK: Function Attrs: memory(inaccessiblemem: readwrite)
; CHECK-LABEL: define {{[^@]+}}@callerB2
; CHECK-SAME: () #[[ATTR0]] {
; CHECK-NEXT: [[STACK:%.*]] = alloca i8, align 1
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @inaccesible_argmem_only_decl(ptr noundef nonnull dereferenceable(1) [[STACK]])
; CHECK-NEXT: ret void
;
%stack = alloca i8
call ptr @inaccesible_argmem_only_decl(ptr %stack)
ret void
}
define void @callerC1() {
; CHECK-LABEL: define {{[^@]+}}@callerC1() {
; CHECK-NEXT: [[UNKNOWN:%.*]] = call ptr @unknown_ptr()
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @argmem_only(ptr [[UNKNOWN]])
; CHECK-NEXT: ret void
;
%unknown = call ptr @unknown_ptr()
call ptr @argmem_only(ptr %unknown)
ret void
}
define void @callerC2() {
; CHECK-LABEL: define {{[^@]+}}@callerC2() {
; CHECK-NEXT: [[UNKNOWN:%.*]] = call ptr @unknown_ptr()
; CHECK-NEXT: [[TMP1:%.*]] = call ptr @inaccesible_argmem_only_decl(ptr [[UNKNOWN]])
; CHECK-NEXT: ret void
;
%unknown = call ptr @unknown_ptr()
call ptr @inaccesible_argmem_only_decl(ptr %unknown)
ret void
}
define void @callerD1() {
; CHECK-LABEL: define {{[^@]+}}@callerD1() {
; CHECK-NEXT: [[UNKNOWN:%.*]] = call ptr @argmem_only(ptr noundef align 4294967296 null)
; CHECK-NEXT: store i8 0, ptr [[UNKNOWN]], align 1
; CHECK-NEXT: ret void
;
%unknown = call ptr @argmem_only(ptr null)
store i8 0, ptr %unknown
ret void
}
define void @callerD2() {
; CHECK-LABEL: define {{[^@]+}}@callerD2() {
; CHECK-NEXT: [[UNKNOWN:%.*]] = call ptr @inaccesible_argmem_only_decl(ptr noundef align 4294967296 null)
; CHECK-NEXT: store i8 0, ptr [[UNKNOWN]], align 1
; CHECK-NEXT: ret void
;
%unknown = call ptr @inaccesible_argmem_only_decl(ptr null)
store i8 0, ptr %unknown
ret void
}
define void @callerE(ptr %arg) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none)
; CHECK-LABEL: define {{[^@]+}}@callerE
; CHECK-SAME: (ptr nocapture nofree readnone [[ARG:%.*]]) #[[ATTR5:[0-9]+]] {
; CHECK-NEXT: ret void
;
call void @llvm.lifetime.start.p0(i64 4, ptr %arg)
ret void
}
define void @write_global() {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; CHECK-LABEL: define {{[^@]+}}@write_global
; CHECK-SAME: () #[[ATTR6:[0-9]+]] {
; CHECK-NEXT: store i32 0, ptr @G, align 4
; CHECK-NEXT: ret void
;
store i32 0, ptr @G, align 4
ret void
}
define void @write_global_via_arg(ptr %GPtr) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write)
; CHECK-LABEL: define {{[^@]+}}@write_global_via_arg
; CHECK-SAME: (ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[GPTR:%.*]]) #[[ATTR7:[0-9]+]] {
; CHECK-NEXT: store i32 0, ptr [[GPTR]], align 4
; CHECK-NEXT: ret void
;
store i32 0, ptr %GPtr, align 4
ret void
}
define internal void @write_global_via_arg_internal(ptr %GPtr) {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none)
; CHECK-LABEL: define {{[^@]+}}@write_global_via_arg_internal
; CHECK-SAME: () #[[ATTR8:[0-9]+]] {
; CHECK-NEXT: store i32 0, ptr @G, align 4
; CHECK-NEXT: ret void
;
store i32 0, ptr %GPtr, align 4
ret void
}
define void @writeonly_global() {
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@writeonly_global
; TUNIT-SAME: () #[[ATTR6]] {
; TUNIT-NEXT: call void @write_global() #[[ATTR12:[0-9]+]]
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write)
; CGSCC-LABEL: define {{[^@]+}}@writeonly_global
; CGSCC-SAME: () #[[ATTR9:[0-9]+]] {
; CGSCC-NEXT: call void @write_global() #[[ATTR13:[0-9]+]]
; CGSCC-NEXT: ret void
;
call void @write_global()
ret void
}
define void @writeonly_global_via_arg() {
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@writeonly_global_via_arg
; TUNIT-SAME: () #[[ATTR6]] {
; TUNIT-NEXT: call void @write_global_via_arg(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) @G) #[[ATTR12]]
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write)
; CGSCC-LABEL: define {{[^@]+}}@writeonly_global_via_arg
; CGSCC-SAME: () #[[ATTR9]] {
; CGSCC-NEXT: call void @write_global_via_arg(ptr nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) @G) #[[ATTR13]]
; CGSCC-NEXT: ret void
;
call void @write_global_via_arg(ptr @G)
ret void
}
define void @writeonly_global_via_arg_internal() {
;
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@writeonly_global_via_arg_internal
; TUNIT-SAME: () #[[ATTR6]] {
; TUNIT-NEXT: call void @write_global_via_arg_internal() #[[ATTR12]]
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write)
; CGSCC-LABEL: define {{[^@]+}}@writeonly_global_via_arg_internal
; CGSCC-SAME: () #[[ATTR9]] {
; CGSCC-NEXT: call void @write_global_via_arg_internal() #[[ATTR13]]
; CGSCC-NEXT: ret void
;
call void @write_global_via_arg_internal(ptr @G)
ret void
}
define i8 @recursive_not_readnone(ptr %ptr, i1 %c) {
; TUNIT: Function Attrs: nofree nosync nounwind memory(argmem: write)
; TUNIT-LABEL: define {{[^@]+}}@recursive_not_readnone
; TUNIT-SAME: (ptr nocapture nofree writeonly [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR9:[0-9]+]] {
; TUNIT-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; TUNIT: t:
; TUNIT-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR13:[0-9]+]]
; TUNIT-NEXT: ret i8 1
; TUNIT: f:
; TUNIT-NEXT: store i8 1, ptr [[PTR]], align 1
; TUNIT-NEXT: ret i8 0
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(argmem: write)
; CGSCC-LABEL: define {{[^@]+}}@recursive_not_readnone
; CGSCC-SAME: (ptr nocapture nofree writeonly [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10:[0-9]+]] {
; CGSCC-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CGSCC: t:
; CGSCC-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR14:[0-9]+]]
; CGSCC-NEXT: ret i8 1
; CGSCC: f:
; CGSCC-NEXT: store i8 1, ptr [[PTR]], align 1
; CGSCC-NEXT: ret i8 0
;
%alloc = alloca i8
br i1 %c, label %t, label %f
t:
call i8 @recursive_not_readnone(ptr %alloc, i1 false)
%r = load i8, ptr %alloc
ret i8 %r
f:
store i8 1, ptr %ptr
ret i8 0
}
define internal i8 @recursive_not_readnone_internal(ptr %ptr, i1 %c) {
; TUNIT: Function Attrs: nofree nosync nounwind memory(argmem: write)
; TUNIT-LABEL: define {{[^@]+}}@recursive_not_readnone_internal
; TUNIT-SAME: (ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR9]] {
; TUNIT-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; TUNIT: t:
; TUNIT-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR13]]
; TUNIT-NEXT: ret i8 1
; TUNIT: f:
; TUNIT-NEXT: store i8 1, ptr [[PTR]], align 1
; TUNIT-NEXT: ret i8 0
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(argmem: write)
; CGSCC-LABEL: define {{[^@]+}}@recursive_not_readnone_internal
; CGSCC-SAME: (ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10]] {
; CGSCC-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CGSCC: t:
; CGSCC-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR14]]
; CGSCC-NEXT: ret i8 1
; CGSCC: f:
; CGSCC-NEXT: store i8 1, ptr [[PTR]], align 1
; CGSCC-NEXT: ret i8 0
;
%alloc = alloca i8
br i1 %c, label %t, label %f
t:
call i8 @recursive_not_readnone_internal(ptr %alloc, i1 false)
%r = load i8, ptr %alloc
ret i8 %r
f:
store i8 1, ptr %ptr
ret i8 0
}
define i8 @readnone_caller(i1 %c) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind memory(none)
; TUNIT-LABEL: define {{[^@]+}}@readnone_caller
; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR10:[0-9]+]] {
; TUNIT-NEXT: [[A:%.*]] = alloca i8, align 1
; TUNIT-NEXT: [[R:%.*]] = call i8 @recursive_not_readnone_internal(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[A]], i1 noundef [[C]]) #[[ATTR13]]
; TUNIT-NEXT: ret i8 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(none)
; CGSCC-LABEL: define {{[^@]+}}@readnone_caller
; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR11:[0-9]+]] {
; CGSCC-NEXT: [[A:%.*]] = alloca i8, align 1
; CGSCC-NEXT: [[R:%.*]] = call i8 @recursive_not_readnone_internal(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[A]], i1 noundef [[C]]) #[[ATTR15:[0-9]+]]
; CGSCC-NEXT: ret i8 [[R]]
;
%a = alloca i8
%r = call i8 @recursive_not_readnone_internal(ptr %a, i1 %c)
ret i8 %r
}
define internal i8 @recursive_readnone_internal2(ptr %ptr, i1 %c) {
; TUNIT: Function Attrs: nofree nosync nounwind memory(argmem: write)
; TUNIT-LABEL: define {{[^@]+}}@recursive_readnone_internal2
; TUNIT-SAME: (ptr noalias nocapture nofree writeonly [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR9]] {
; TUNIT-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; TUNIT: t:
; TUNIT-NEXT: [[TMP1:%.*]] = call i8 @recursive_readnone_internal2(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR13]]
; TUNIT-NEXT: ret i8 1
; TUNIT: f:
; TUNIT-NEXT: store i8 1, ptr [[PTR]], align 1
; TUNIT-NEXT: ret i8 0
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(argmem: write)
; CGSCC-LABEL: define {{[^@]+}}@recursive_readnone_internal2
; CGSCC-SAME: (ptr noalias nocapture nofree writeonly [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10]] {
; CGSCC-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CGSCC: t:
; CGSCC-NEXT: [[TMP1:%.*]] = call i8 @recursive_readnone_internal2(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR14]]
; CGSCC-NEXT: ret i8 1
; CGSCC: f:
; CGSCC-NEXT: store i8 1, ptr [[PTR]], align 1
; CGSCC-NEXT: ret i8 0
;
%alloc = alloca i8
br i1 %c, label %t, label %f
t:
call i8 @recursive_readnone_internal2(ptr %alloc, i1 false)
%r = load i8, ptr %alloc
ret i8 %r
f:
store i8 1, ptr %ptr
ret i8 0
}
define i8 @readnone_caller2(i1 %c) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind memory(none)
; TUNIT-LABEL: define {{[^@]+}}@readnone_caller2
; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR10]] {
; TUNIT-NEXT: [[R:%.*]] = call i8 @recursive_readnone_internal2(ptr undef, i1 noundef [[C]]) #[[ATTR13]]
; TUNIT-NEXT: ret i8 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(none)
; CGSCC-LABEL: define {{[^@]+}}@readnone_caller2
; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR11]] {
; CGSCC-NEXT: [[R:%.*]] = call i8 @recursive_readnone_internal2(ptr nofree undef, i1 noundef [[C]]) #[[ATTR15]]
; CGSCC-NEXT: ret i8 [[R]]
;
%r = call i8 @recursive_readnone_internal2(ptr undef, i1 %c)
ret i8 %r
}
define internal i8 @recursive_not_readnone_internal3(ptr %ptr, i1 %c) {
; TUNIT: Function Attrs: nofree nosync nounwind memory(argmem: write)
; TUNIT-LABEL: define {{[^@]+}}@recursive_not_readnone_internal3
; TUNIT-SAME: (ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR9]] {
; TUNIT-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; TUNIT: t:
; TUNIT-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal3(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR13]]
; TUNIT-NEXT: ret i8 1
; TUNIT: f:
; TUNIT-NEXT: store i8 1, ptr [[PTR]], align 1
; TUNIT-NEXT: ret i8 0
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(argmem: write)
; CGSCC-LABEL: define {{[^@]+}}@recursive_not_readnone_internal3
; CGSCC-SAME: (ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[PTR:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10]] {
; CGSCC-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CGSCC: t:
; CGSCC-NEXT: [[TMP1:%.*]] = call i8 @recursive_not_readnone_internal3(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef false) #[[ATTR14]]
; CGSCC-NEXT: ret i8 1
; CGSCC: f:
; CGSCC-NEXT: store i8 1, ptr [[PTR]], align 1
; CGSCC-NEXT: ret i8 0
;
%alloc = alloca i8
br i1 %c, label %t, label %f
t:
call i8 @recursive_not_readnone_internal3(ptr %alloc, i1 false)
%r = load i8, ptr %alloc
ret i8 %r
f:
store i8 1, ptr %ptr
ret i8 0
}
define i8 @readnone_caller3(i1 %c) {
; TUNIT: Function Attrs: nofree norecurse nosync nounwind memory(none)
; TUNIT-LABEL: define {{[^@]+}}@readnone_caller3
; TUNIT-SAME: (i1 [[C:%.*]]) #[[ATTR10]] {
; TUNIT-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; TUNIT-NEXT: [[R:%.*]] = call i8 @recursive_not_readnone_internal3(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef [[C]]) #[[ATTR13]]
; TUNIT-NEXT: ret i8 [[R]]
;
; CGSCC: Function Attrs: nofree nosync nounwind memory(none)
; CGSCC-LABEL: define {{[^@]+}}@readnone_caller3
; CGSCC-SAME: (i1 noundef [[C:%.*]]) #[[ATTR11]] {
; CGSCC-NEXT: [[ALLOC:%.*]] = alloca i8, align 1
; CGSCC-NEXT: [[R:%.*]] = call i8 @recursive_not_readnone_internal3(ptr noalias nocapture nofree noundef nonnull writeonly dereferenceable(1) [[ALLOC]], i1 noundef [[C]]) #[[ATTR15]]
; CGSCC-NEXT: ret i8 [[R]]
;
%alloc = alloca i8
%r = call i8 @recursive_not_readnone_internal3(ptr %alloc, i1 %c)
ret i8 %r
}
define internal void @argmemonly_before_ipconstprop(ptr %p) argmemonly {
; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none)
; CHECK-LABEL: define {{[^@]+}}@argmemonly_before_ipconstprop
; CHECK-SAME: () #[[ATTR8]] {
; CHECK-NEXT: store i32 0, ptr @G, align 4
; CHECK-NEXT: ret void
;
store i32 0, ptr %p
ret void
}
define void @argmemonly_caller() {
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@argmemonly_caller
; TUNIT-SAME: () #[[ATTR6]] {
; TUNIT-NEXT: call void @argmemonly_before_ipconstprop() #[[ATTR12]]
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write)
; CGSCC-LABEL: define {{[^@]+}}@argmemonly_caller
; CGSCC-SAME: () #[[ATTR9]] {
; CGSCC-NEXT: call void @argmemonly_before_ipconstprop() #[[ATTR13]]
; CGSCC-NEXT: ret void
;
call void @argmemonly_before_ipconstprop(ptr @G)
ret void
}
declare ptr @no_mem_unknown_ptr(ptr %arg) memory(none)
define void @argmem_and_unknown(i1 %c, ptr %arg) memory(argmem: readwrite) {
; TUNIT: Function Attrs: nosync memory(argmem: write)
; TUNIT-LABEL: define {{[^@]+}}@argmem_and_unknown
; TUNIT-SAME: (i1 noundef [[C:%.*]], ptr writeonly [[ARG:%.*]]) #[[ATTR11:[0-9]+]] {
; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; TUNIT: t:
; TUNIT-NEXT: [[P:%.*]] = call ptr @no_mem_unknown_ptr(ptr noalias readnone [[ARG]]) #[[ATTR14:[0-9]+]]
; TUNIT-NEXT: store i32 0, ptr [[P]], align 4
; TUNIT-NEXT: br label [[F]]
; TUNIT: f:
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: nosync memory(argmem: write)
; CGSCC-LABEL: define {{[^@]+}}@argmem_and_unknown
; CGSCC-SAME: (i1 noundef [[C:%.*]], ptr writeonly [[ARG:%.*]]) #[[ATTR12:[0-9]+]] {
; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CGSCC: t:
; CGSCC-NEXT: [[P:%.*]] = call ptr @no_mem_unknown_ptr(ptr noalias readnone [[ARG]]) #[[ATTR16:[0-9]+]]
; CGSCC-NEXT: store i32 0, ptr [[P]], align 4
; CGSCC-NEXT: br label [[F]]
; CGSCC: f:
; CGSCC-NEXT: ret void
;
br i1 %c, label %t, label %f
t:
%p = call ptr @no_mem_unknown_ptr(ptr %arg)
store i32 0, ptr %p
br label %f
f:
ret void
}
;.
; TUNIT: attributes #[[ATTR0]] = { memory(inaccessiblemem: readwrite) }
; TUNIT: attributes #[[ATTR1]] = { memory(argmem: readwrite, inaccessiblemem: readwrite) }
; TUNIT: attributes #[[ATTR2]] = { memory(none) }
; TUNIT: attributes #[[ATTR3]] = { memory(argmem: readwrite) }
; TUNIT: attributes #[[ATTR4:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
; TUNIT: attributes #[[ATTR5]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
; TUNIT: attributes #[[ATTR6]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) }
; TUNIT: attributes #[[ATTR7]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) }
; TUNIT: attributes #[[ATTR8]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none) }
; TUNIT: attributes #[[ATTR9]] = { nofree nosync nounwind memory(argmem: write) }
; TUNIT: attributes #[[ATTR10]] = { nofree norecurse nosync nounwind memory(none) }
; TUNIT: attributes #[[ATTR11]] = { nosync memory(argmem: write) }
; TUNIT: attributes #[[ATTR12]] = { nofree nosync nounwind willreturn memory(write) }
; TUNIT: attributes #[[ATTR13]] = { nofree nosync nounwind memory(write) }
; TUNIT: attributes #[[ATTR14]] = { nosync }
;.
; CGSCC: attributes #[[ATTR0]] = { memory(inaccessiblemem: readwrite) }
; CGSCC: attributes #[[ATTR1]] = { memory(argmem: readwrite, inaccessiblemem: readwrite) }
; CGSCC: attributes #[[ATTR2]] = { memory(none) }
; CGSCC: attributes #[[ATTR3]] = { memory(argmem: readwrite) }
; CGSCC: attributes #[[ATTR4:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
; CGSCC: attributes #[[ATTR5]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) }
; CGSCC: attributes #[[ATTR6]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) }
; CGSCC: attributes #[[ATTR7]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) }
; CGSCC: attributes #[[ATTR8]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none) }
; CGSCC: attributes #[[ATTR9]] = { mustprogress nofree nosync nounwind willreturn memory(write) }
; CGSCC: attributes #[[ATTR10]] = { nofree nosync nounwind memory(argmem: write) }
; CGSCC: attributes #[[ATTR11]] = { nofree nosync nounwind memory(none) }
; CGSCC: attributes #[[ATTR12]] = { nosync memory(argmem: write) }
; CGSCC: attributes #[[ATTR13]] = { nofree nounwind willreturn memory(write) }
; CGSCC: attributes #[[ATTR14]] = { nofree nosync nounwind memory(write) }
; CGSCC: attributes #[[ATTR15]] = { nofree nounwind memory(write) }
; CGSCC: attributes #[[ATTR16]] = { nosync }
;.
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