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llvm-project/llvm/test/Transforms/Attributor/heap_to_stack.ll
Nikita Popov 304f1d59ca [IR] Switch everything to use memory attribute 
This switches everything to use the memory attribute proposed in
https://discourse.llvm.org/t/rfc-unify-memory-effect-attributes/65579.
The old argmemonly, inaccessiblememonly and inaccessiblemem_or_argmemonly
attributes are dropped. The readnone, readonly and writeonly attributes
are restricted to parameters only.

The old attributes are auto-upgraded both in bitcode and IR.
The bitcode upgrade is a policy requirement that has to be retained
indefinitely. The IR upgrade is mainly there so it's not necessary
to update all tests using memory attributes in this patch, which
is already large enough. We could drop that part after migrating
tests, or retain it longer term, to make it easier to import IR
from older LLVM versions.

High-level Function/CallBase APIs like doesNotAccessMemory() or
setDoesNotAccessMemory() are mapped transparently to the memory
attribute. Code that directly manipulates attributes (e.g. via
AttributeList) on the other hand needs to switch to working with
the memory attribute instead.

Differential Revision: https://reviews.llvm.org/D135780
2022-11-04 10:21:38 +01:00

665 lines
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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-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=8 -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
declare noalias i8* @malloc(i64) allockind("alloc,uninitialized") allocsize(0)
declare void @nocapture_func_frees_pointer(i8* nocapture)
declare void @func_throws(...)
declare void @sync_func(i8* %p)
declare void @sync_will_return(i8* %p) willreturn nounwind
declare void @no_sync_func(i8* nocapture %p) nofree nosync willreturn
declare void @nofree_func(i8* nocapture %p) nofree nosync willreturn
declare void @foo(i32* %p)
declare void @foo_nounw(i32* %p) nounwind nofree
declare void @usei8(i8)
declare i32 @no_return_call() noreturn
declare void @free(i8* nocapture) allockind("free")
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
define void @h2s_value_simplify_interaction(i1 %c, i8* %A) {
; CHECK-LABEL: define {{[^@]+}}@h2s_value_simplify_interaction
; CHECK-SAME: (i1 [[C:%.*]], i8* nocapture nofree readnone [[A:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ADD:%.*]] = add i64 2, 2
; CHECK-NEXT: [[M:%.*]] = tail call noalias align 16 i8* @malloc(i64 noundef [[ADD]])
; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; CHECK: t:
; CHECK-NEXT: br i1 false, label [[DEAD:%.*]], label [[F2:%.*]]
; CHECK: f:
; CHECK-NEXT: br label [[J:%.*]]
; CHECK: f2:
; CHECK-NEXT: [[L:%.*]] = load i8, i8* [[M]], align 16
; CHECK-NEXT: call void @usei8(i8 [[L]])
; CHECK-NEXT: call void @no_sync_func(i8* nocapture nofree noundef align 16 [[M]]) #[[ATTR10:[0-9]+]]
; CHECK-NEXT: br label [[J]]
; CHECK: dead:
; CHECK-NEXT: unreachable
; CHECK: j:
; CHECK-NEXT: [[PHI:%.*]] = phi i8* [ [[M]], [[F]] ], [ null, [[F2]] ]
; CHECK-NEXT: tail call void @no_sync_func(i8* nocapture nofree noundef align 16 [[PHI]]) #[[ATTR10]]
; CHECK-NEXT: ret void
;
entry:
%add = add i64 2, 2
%m = tail call align 16 noalias i8* @malloc(i64 %add)
br i1 %c, label %t, label %f
t:
br i1 false, label %dead, label %f2
f:
br label %j
f2:
%c1 = bitcast i8* %m to i32*
%c2 = bitcast i32* %c1 to i8*
%l = load i8, i8* %c2
call void @usei8(i8 %l)
call void @no_sync_func(i8* noundef %c2) nounwind
br label %j
dead:
br label %j
j:
%phi = phi i8* [ %m, %f ], [ null, %f2 ], [ %A, %dead ]
tail call void @no_sync_func(i8* noundef %phi) nounwind
;tail call void @free(i8* %m)
ret void
}
define void @nofree_arg_only(i8* %p1, i8* %p2) {
; CHECK-LABEL: define {{[^@]+}}@nofree_arg_only
; CHECK-SAME: (i8* nocapture nofree [[P1:%.*]], i8* nocapture [[P2:%.*]]) {
; CHECK-NEXT: tail call void @free(i8* nocapture [[P2]])
; CHECK-NEXT: tail call void @nofree_func(i8* nocapture nofree [[P1]])
; CHECK-NEXT: ret void
;
tail call void @free(i8* %p2)
tail call void @nofree_func(i8* %p1)
ret void
}
; TEST 1 - negative, pointer freed in another function.
define void @test1() {
; CHECK-LABEL: define {{[^@]+}}@test1() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @nocapture_func_frees_pointer(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: tail call void (...) @func_throws()
; CHECK-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @nocapture_func_frees_pointer(i8* %1)
tail call void (...) @func_throws()
tail call void @free(i8* %1)
ret void
}
; TEST 2 - negative, call to a sync function.
define void @test2() {
; CHECK-LABEL: define {{[^@]+}}@test2() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @sync_func(i8* [[TMP1]])
; CHECK-NEXT: tail call void @free(i8* nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
; TEST 3 - 1 malloc, 1 free
define void @test3() {
; CHECK-LABEL: define {{[^@]+}}@test3() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
define void @test3a(i8* %p) {
; CHECK-LABEL: define {{[^@]+}}@test3a
; CHECK-SAME: (i8* nocapture [[P:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @nofree_arg_only(i8* %1, i8* %p)
tail call void @free(i8* %1)
ret void
}
declare noalias i8* @aligned_alloc(i64 allocalign, i64) allockind("alloc,uninitialized,aligned") allocsize(1)
define void @test3b(i8* %p) {
; CHECK-LABEL: define {{[^@]+}}@test3b
; CHECK-SAME: (i8* nocapture [[P:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 128, align 32
; CHECK-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @aligned_alloc(i64 32, i64 128)
tail call void @nofree_arg_only(i8* %1, i8* %p)
tail call void @free(i8* %1)
ret void
}
; leave alone non-constant alignments.
define void @test3c(i64 %alignment) {
; CHECK-LABEL: define {{[^@]+}}@test3c
; CHECK-SAME: (i64 [[ALIGNMENT:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @aligned_alloc(i64 [[ALIGNMENT]], i64 noundef 128)
; CHECK-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @aligned_alloc(i64 %alignment, i64 128)
tail call void @free(i8* %1)
ret void
}
; leave alone a constant-but-invalid alignment
define void @test3d(i8* %p) {
; CHECK-LABEL: define {{[^@]+}}@test3d
; CHECK-SAME: (i8* nocapture [[P:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @aligned_alloc(i64 noundef 33, i64 noundef 128)
; CHECK-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[TMP1]], i8* nocapture [[P]])
; CHECK-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
; CHECK-SAME; (i8* nocapture [[P:%.*]]) {
%1 = tail call noalias i8* @aligned_alloc(i64 33, i64 128)
tail call void @nofree_arg_only(i8* %1, i8* %p)
tail call void @free(i8* %1)
ret void
}
declare noalias i8* @calloc(i64, i64) allockind("alloc,zeroed") allocsize(0,1)
define void @test0() {
; CHECK-LABEL: define {{[^@]+}}@test0() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 8, align 1
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DOTH2S]], i8 0, i64 8, i1 false)
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @calloc(i64 2, i64 4)
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
; TEST 4
define void @test4() {
; CHECK-LABEL: define {{[^@]+}}@test4() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @nofree_func(i8* %1)
ret void
}
; TEST 5 - not all exit paths have a call to free, but all uses of malloc
; are in nofree functions and are not captured
define void @test5(i32, i8* %p) {
; CHECK-LABEL: define {{[^@]+}}@test5
; CHECK-SAME: (i32 [[TMP0:%.*]], i8* nocapture [[P:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT: br i1 [[TMP2]], label [[TMP4:%.*]], label [[TMP3:%.*]]
; CHECK: 3:
; CHECK-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: br label [[TMP5:%.*]]
; CHECK: 4:
; CHECK-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; CHECK-NEXT: br label [[TMP5]]
; CHECK: 5:
; CHECK-NEXT: ret void
;
%2 = tail call noalias i8* @malloc(i64 4)
%3 = icmp eq i32 %0, 0
br i1 %3, label %5, label %4
4: ; preds = %1
tail call void @nofree_func(i8* %2)
br label %6
5: ; preds = %1
tail call void @nofree_arg_only(i8* %2, i8* %p)
tail call void @free(i8* %2)
br label %6
6: ; preds = %5, %4
ret void
}
; TEST 6 - all exit paths have a call to free
define void @test6(i32) {
; CHECK-LABEL: define {{[^@]+}}@test6
; CHECK-SAME: (i32 [[TMP0:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT: br i1 [[TMP2]], label [[TMP4:%.*]], label [[TMP3:%.*]]
; CHECK: 3:
; CHECK-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: br label [[TMP5:%.*]]
; CHECK: 4:
; CHECK-NEXT: br label [[TMP5]]
; CHECK: 5:
; CHECK-NEXT: ret void
;
%2 = tail call noalias i8* @malloc(i64 4)
%3 = icmp eq i32 %0, 0
br i1 %3, label %5, label %4
4: ; preds = %1
tail call void @nofree_func(i8* %2)
tail call void @free(i8* %2)
br label %6
5: ; preds = %1
tail call void @free(i8* %2)
br label %6
6: ; preds = %5, %4
ret void
}
; TEST 7 - free is dead.
define void @test7() {
; CHECK-LABEL: define {{[^@]+}}@test7() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[TMP1:%.*]] = tail call i32 @no_return_call() #[[ATTR4:[0-9]+]]
; CHECK-NEXT: unreachable
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call i32 @no_return_call()
tail call void @free(i8* %1)
ret void
}
; TEST 8 - Negative: bitcast pointer used in capture function
define void @test8() {
; CHECK-LABEL: define {{[^@]+}}@test8() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: tail call void @foo(i32* noundef align 4 [[TMP2]])
; CHECK-NEXT: tail call void @free(i8* nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @foo(i32* %2)
tail call void @free(i8* %1)
ret void
}
; TEST 9 - FIXME: malloc should be converted.
define void @test9() {
; CHECK-LABEL: define {{[^@]+}}@test9() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: tail call void @foo_nounw(i32* nofree noundef align 4 [[TMP2]]) #[[ATTR10]]
; CHECK-NEXT: tail call void @free(i8* nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @foo_nounw(i32* %2)
tail call void @free(i8* %1)
ret void
}
; TEST 10 - 1 malloc, 1 free
define i32 @test10() {
; CHECK-LABEL: define {{[^@]+}}@test10() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP1]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @free(i8* %1)
ret i32 %3
}
define i32 @test_lifetime() {
; CHECK-LABEL: define {{[^@]+}}@test_lifetime() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[DOTH2S]])
; CHECK-NEXT: [[TMP1:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP1]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
; CHECK-NEXT: ret i32 [[TMP2]]
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @no_sync_func(i8* %1)
call void @llvm.lifetime.start.p0i8(i64 4, i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @free(i8* %1)
ret i32 %3
}
; TEST 11
define void @test11() {
; CHECK-LABEL: define {{[^@]+}}@test11() {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: tail call void @sync_will_return(i8* [[DOTH2S]]) #[[ATTR10]]
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
tail call void @sync_will_return(i8* %1)
tail call void @free(i8* %1)
ret void
}
; TEST 12
define i32 @irreducible_cfg(i32 %0) {
; CHECK-LABEL: define {{[^@]+}}@irreducible_cfg
; CHECK-SAME: (i32 [[TMP0:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP0]], 1
; CHECK-NEXT: br i1 [[TMP3]], label [[TMP4:%.*]], label [[TMP6:%.*]]
; CHECK: 4:
; CHECK-NEXT: [[TMP5:%.*]] = add nsw i32 [[TMP0]], 5
; CHECK-NEXT: br label [[TMP12:%.*]]
; CHECK: 6:
; CHECK-NEXT: br label [[TMP7:%.*]]
; CHECK: 7:
; CHECK-NEXT: [[DOT0:%.*]] = phi i32 [ [[TMP13:%.*]], [[TMP12]] ], [ 1, [[TMP6]] ]
; CHECK-NEXT: [[TMP8:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP9:%.*]] = add nsw i32 [[TMP8]], -1
; CHECK-NEXT: store i32 [[TMP9]], i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP10:%.*]] = icmp ne i32 [[TMP8]], 0
; CHECK-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP14:%.*]]
; CHECK: 11:
; CHECK-NEXT: br label [[TMP12]]
; CHECK: 12:
; CHECK-NEXT: [[DOT1:%.*]] = phi i32 [ [[TMP5]], [[TMP4]] ], [ [[DOT0]], [[TMP11]] ]
; CHECK-NEXT: [[TMP13]] = add nsw i32 [[DOT1]], 1
; CHECK-NEXT: br label [[TMP7]]
; CHECK: 14:
; CHECK-NEXT: [[TMP15:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: ret i32 [[TMP15]]
;
%2 = call noalias i8* @malloc(i64 4)
%3 = bitcast i8* %2 to i32*
store i32 10, i32* %3, align 4
%4 = icmp eq i32 %0, 1
br i1 %4, label %5, label %7
5: ; preds = %1
%6 = add nsw i32 %0, 5
br label %13
7: ; preds = %1
br label %8
8: ; preds = %13, %7
%.0 = phi i32 [ %14, %13 ], [ 1, %7 ]
%9 = load i32, i32* %3, align 4
%10 = add nsw i32 %9, -1
store i32 %10, i32* %3, align 4
%11 = icmp ne i32 %9, 0
br i1 %11, label %12, label %15
12: ; preds = %8
br label %13
13: ; preds = %12, %5
%.1 = phi i32 [ %6, %5 ], [ %.0, %12 ]
%14 = add nsw i32 %.1, 1
br label %8
15: ; preds = %8
%16 = load i32, i32* %3, align 4
%17 = bitcast i32* %3 to i8*
call void @free(i8* %17)
%18 = load i32, i32* %3, align 4
ret i32 %18
}
define i32 @malloc_in_loop(i32 %0) {
; CHECK-LABEL: define {{[^@]+}}@malloc_in_loop
; CHECK-SAME: (i32 [[TMP0:%.*]]) {
; CHECK-NEXT: [[TMP2:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[TMP3:%.*]] = alloca i32*, align 8
; CHECK-NEXT: store i32 [[TMP0]], i32* [[TMP2]], align 4
; CHECK-NEXT: br label [[TMP4:%.*]]
; CHECK: 4:
; CHECK-NEXT: [[TMP5:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = add nsw i32 [[TMP5]], -1
; CHECK-NEXT: store i32 [[TMP6]], i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP7:%.*]] = icmp sgt i32 [[TMP6]], 0
; CHECK-NEXT: br i1 [[TMP7]], label [[TMP8:%.*]], label [[TMP10:%.*]]
; CHECK: 8:
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: [[TMP9:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; CHECK-NEXT: br label [[TMP4]]
; CHECK: 10:
; CHECK-NEXT: ret i32 5
;
%2 = alloca i32, align 4
%3 = alloca i32*, align 8
store i32 %0, i32* %2, align 4
br label %4
4: ; preds = %8, %1
%5 = load i32, i32* %2, align 4
%6 = add nsw i32 %5, -1
store i32 %6, i32* %2, align 4
%7 = icmp sgt i32 %6, 0
br i1 %7, label %8, label %11
8: ; preds = %4
%9 = call noalias i8* @malloc(i64 4)
%10 = bitcast i8* %9 to i32*
store i32 1, i32* %10, align 8
br label %4
11: ; preds = %4
ret i32 5
}
; Malloc/Calloc too large
define i32 @test13() {
; CHECK-LABEL: define {{[^@]+}}@test13() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 256)
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; CHECK-NEXT: ret i32 [[TMP3]]
;
%1 = tail call noalias i8* @malloc(i64 256)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @free(i8* %1)
ret i32 %3
}
define i32 @test_sle() {
; CHECK-LABEL: define {{[^@]+}}@test_sle() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef -1)
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; CHECK-NEXT: ret i32 [[TMP3]]
;
%1 = tail call noalias i8* @malloc(i64 -1)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @free(i8* %1)
ret i32 %3
}
define i32 @test_overflow() {
; CHECK-LABEL: define {{[^@]+}}@test_overflow() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @calloc(i64 noundef 65537, i64 noundef 65537)
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; CHECK-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; CHECK-NEXT: store i32 10, i32* [[TMP2]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
; CHECK-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; CHECK-NEXT: ret i32 [[TMP3]]
;
%1 = tail call noalias i8* @calloc(i64 65537, i64 65537)
tail call void @no_sync_func(i8* %1)
%2 = bitcast i8* %1 to i32*
store i32 10, i32* %2
%3 = load i32, i32* %2
tail call void @free(i8* %1)
ret i32 %3
}
define void @test14() {
; CHECK-LABEL: define {{[^@]+}}@test14() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @calloc(i64 noundef 64, i64 noundef 4)
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; CHECK-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @calloc(i64 64, i64 4)
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
define void @test15(i64 %S) {
; CHECK-LABEL: define {{[^@]+}}@test15
; CHECK-SAME: (i64 [[S:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 [[S]])
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; CHECK-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 %S)
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
define void @test16a(i8 %v, i8** %P) {
; CHECK-LABEL: define {{[^@]+}}@test16a
; CHECK-SAME: (i8 [[V:%.*]], i8** nocapture nofree readnone [[P:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: store i8 [[V]], i8* [[DOTH2S]], align 1
; CHECK-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree noundef nonnull dereferenceable(1) [[DOTH2S]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
store i8 %v, i8* %1
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* nonnull dereferenceable(1) %1)
ret void
}
define void @test16b(i8 %v, i8** %P) {
; CHECK-LABEL: define {{[^@]+}}@test16b
; CHECK-SAME: (i8 [[V:%.*]], i8** nocapture nofree writeonly [[P:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: store i8* [[TMP1]], i8** [[P]], align 8
; CHECK-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]])
; CHECK-NEXT: tail call void @free(i8* nocapture [[TMP1]])
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
store i8* %1, i8** %P
tail call void @no_sync_func(i8* %1)
tail call void @free(i8* %1)
ret void
}
define void @test16c(i8 %v, i8** %P) {
; CHECK-LABEL: define {{[^@]+}}@test16c
; CHECK-SAME: (i8 [[V:%.*]], i8** nocapture nofree writeonly [[P:%.*]]) {
; CHECK-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; CHECK-NEXT: store i8* [[DOTH2S]], i8** [[P]], align 8
; CHECK-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[DOTH2S]]) #[[ATTR10]]
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
store i8* %1, i8** %P
tail call void @no_sync_func(i8* %1) nounwind
tail call void @free(i8* %1)
ret void
}
define void @test16d(i8 %v, i8** %P) {
; CHECK-LABEL: define {{[^@]+}}@test16d
; CHECK-SAME: (i8 [[V:%.*]], i8** nocapture nofree writeonly [[P:%.*]]) {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: store i8* [[TMP1]], i8** [[P]], align 8
; CHECK-NEXT: ret void
;
%1 = tail call noalias i8* @malloc(i64 4)
store i8* %1, i8** %P
ret void
}
;.
; CHECK: attributes #[[ATTR0:[0-9]+]] = { allockind("alloc,uninitialized") allocsize(0) }
; CHECK: attributes #[[ATTR1:[0-9]+]] = { nounwind willreturn }
; CHECK: attributes #[[ATTR2:[0-9]+]] = { nofree nosync willreturn }
; CHECK: attributes #[[ATTR3:[0-9]+]] = { nofree nounwind }
; CHECK: attributes #[[ATTR4]] = { noreturn }
; CHECK: attributes #[[ATTR5:[0-9]+]] = { allockind("free") }
; CHECK: attributes #[[ATTR6:[0-9]+]] = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
; CHECK: attributes #[[ATTR7:[0-9]+]] = { allockind("alloc,uninitialized,aligned") allocsize(1) }
; CHECK: attributes #[[ATTR8:[0-9]+]] = { allockind("alloc,zeroed") allocsize(0,1) }
; CHECK: attributes #[[ATTR9:[0-9]+]] = { nocallback nofree nounwind willreturn memory(argmem: write) }
; CHECK: attributes #[[ATTR10]] = { nounwind }
;.
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