; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=8 -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=8 -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 -enable-new-pm=0 -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
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) {
; IS________OPM-LABEL: define {{[^@]+}}@h2s_value_simplify_interaction
; IS________OPM-SAME: (i1 [[C:%.*]], i8* nocapture nofree readnone [[A:%.*]]) {
; IS________OPM-NEXT: entry:
; IS________OPM-NEXT: [[ADD:%.*]] = add i64 2, 2
; IS________OPM-NEXT: [[M:%.*]] = tail call noalias align 16 i8* @malloc(i64 noundef [[ADD]])
; IS________OPM-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; IS________OPM: t:
; IS________OPM-NEXT: br i1 false, label [[DEAD:%.*]], label [[F2:%.*]]
; IS________OPM: f:
; IS________OPM-NEXT: br label [[J:%.*]]
; IS________OPM: f2:
; IS________OPM-NEXT: [[C1:%.*]] = bitcast i8* [[M]] to i32*
; IS________OPM-NEXT: [[C2:%.*]] = bitcast i32* [[C1]] to i8*
; IS________OPM-NEXT: [[L:%.*]] = load i8, i8* [[C2]], align 16
; IS________OPM-NEXT: call void @usei8(i8 [[L]])
; IS________OPM-NEXT: call void @no_sync_func(i8* nocapture nofree noundef align 16 [[C2]]) #[[ATTR9:[0-9]+]]
; IS________OPM-NEXT: br label [[J]]
; IS________OPM: dead:
; IS________OPM-NEXT: unreachable
; IS________OPM: j:
; IS________OPM-NEXT: [[PHI:%.*]] = phi i8* [ [[M]], [[F]] ], [ null, [[F2]] ]
; IS________OPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree noundef align 16 [[PHI]]) #[[ATTR9]]
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@h2s_value_simplify_interaction
; IS________NPM-SAME: (i1 [[C:%.*]], i8* nocapture nofree readnone [[A:%.*]]) {
; IS________NPM-NEXT: entry:
; IS________NPM-NEXT: [[ADD:%.*]] = add i64 2, 2
; IS________NPM-NEXT: [[M:%.*]] = tail call noalias align 16 i8* @malloc(i64 noundef [[ADD]])
; IS________NPM-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
; IS________NPM: t:
; IS________NPM-NEXT: br i1 false, label [[DEAD:%.*]], label [[F2:%.*]]
; IS________NPM: f:
; IS________NPM-NEXT: br label [[J:%.*]]
; IS________NPM: f2:
; IS________NPM-NEXT: [[L:%.*]] = load i8, i8* [[M]], align 16
; IS________NPM-NEXT: call void @usei8(i8 [[L]])
; IS________NPM-NEXT: call void @no_sync_func(i8* nocapture nofree noundef align 16 [[M]]) #[[ATTR10:[0-9]+]]
; IS________NPM-NEXT: br label [[J]]
; IS________NPM: dead:
; IS________NPM-NEXT: unreachable
; IS________NPM: j:
; IS________NPM-NEXT: [[PHI:%.*]] = phi i8* [ [[M]], [[F]] ], [ null, [[F2]] ]
; IS________NPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree noundef align 16 [[PHI]]) #[[ATTR10]]
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test3() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test3() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test3a
; IS________OPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @nofree_arg_only(i8* nocapture nofree [[TMP1]], i8* nocapture [[P]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test3a
; IS________NPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test3b
; IS________OPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @aligned_alloc(i64 noundef 32, i64 noundef 128)
; IS________OPM-NEXT: tail call void @nofree_arg_only(i8* nocapture nofree [[TMP1]], i8* nocapture [[P]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test3b
; IS________NPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 128, align 32
; IS________NPM-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test3d
; IS________OPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @aligned_alloc(i64 noundef 33, i64 noundef 128)
; IS________OPM-NEXT: tail call void @nofree_arg_only(i8* nocapture nofree [[TMP1]], i8* nocapture [[P]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test3d
; IS________NPM-SAME: (i8* nocapture [[P:%.*]]) {
; IS________NPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @aligned_alloc(i64 noundef 33, i64 noundef 128)
; IS________NPM-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[TMP1]], i8* nocapture [[P]])
; IS________NPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test0() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @calloc(i64 noundef 2, i64 noundef 4)
; IS________OPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test0() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 8, align 1
; IS________NPM-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DOTH2S]], i8 0, i64 8, i1 false)
; IS________NPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test5
; IS________OPM-SAME: (i32 [[TMP0:%.*]], i8* nocapture [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP2:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP0]], 0
; IS________OPM-NEXT: br i1 [[TMP3]], label [[TMP5:%.*]], label [[TMP4:%.*]]
; IS________OPM: 4:
; IS________OPM-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[TMP2]])
; IS________OPM-NEXT: br label [[TMP6:%.*]]
; IS________OPM: 5:
; IS________OPM-NEXT: tail call void @nofree_arg_only(i8* nocapture nofree [[TMP2]], i8* nocapture [[P]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP2]])
; IS________OPM-NEXT: br label [[TMP6]]
; IS________OPM: 6:
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test5
; IS________NPM-SAME: (i32 [[TMP0:%.*]], i8* nocapture [[P:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 0
; IS________NPM-NEXT: br i1 [[TMP2]], label [[TMP4:%.*]], label [[TMP3:%.*]]
; IS________NPM: 3:
; IS________NPM-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-NEXT: br label [[TMP5:%.*]]
; IS________NPM: 4:
; IS________NPM-NEXT: tail call void @nofree_arg_only(i8* noalias nocapture nofree [[DOTH2S]], i8* nocapture [[P]])
; IS________NPM-NEXT: br label [[TMP5]]
; IS________NPM: 5:
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test6
; IS________OPM-SAME: (i32 [[TMP0:%.*]]) {
; IS________OPM-NEXT: [[TMP2:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP0]], 0
; IS________OPM-NEXT: br i1 [[TMP3]], label [[TMP5:%.*]], label [[TMP4:%.*]]
; IS________OPM: 4:
; IS________OPM-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[TMP2]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP2]])
; IS________OPM-NEXT: br label [[TMP6:%.*]]
; IS________OPM: 5:
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture [[TMP2]])
; IS________OPM-NEXT: br label [[TMP6]]
; IS________OPM: 6:
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test6
; IS________NPM-SAME: (i32 [[TMP0:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 0
; IS________NPM-NEXT: br i1 [[TMP2]], label [[TMP4:%.*]], label [[TMP3:%.*]]
; IS________NPM: 3:
; IS________NPM-NEXT: tail call void @nofree_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-NEXT: br label [[TMP5:%.*]]
; IS________NPM: 4:
; IS________NPM-NEXT: br label [[TMP5]]
; IS________NPM: 5:
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test7() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[TMP2:%.*]] = tail call i32 @no_return_call() #[[ATTR4:[0-9]+]]
; IS________OPM-NEXT: unreachable
;
; IS________NPM-LABEL: define {{[^@]+}}@test7() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: [[TMP1:%.*]] = tail call i32 @no_return_call() #[[ATTR4:[0-9]+]]
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test9() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]])
; IS________OPM-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; IS________OPM-NEXT: store i32 10, i32* [[TMP2]], align 4
; IS________OPM-NEXT: tail call void @foo_nounw(i32* nofree noundef align 4 [[TMP2]]) #[[ATTR9]]
; IS________OPM-NEXT: tail call void @free(i8* nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test9() {
; IS________NPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________NPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]])
; IS________NPM-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; IS________NPM-NEXT: store i32 10, i32* [[TMP2]], align 4
; IS________NPM-NEXT: tail call void @foo_nounw(i32* nofree noundef align 4 [[TMP2]]) #[[ATTR10]]
; IS________NPM-NEXT: tail call void @free(i8* nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test10() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; IS________OPM-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; IS________OPM-NEXT: store i32 10, i32* [[TMP2]], align 4
; IS________OPM-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; IS________OPM-NEXT: ret i32 [[TMP3]]
;
; IS________NPM-LABEL: define {{[^@]+}}@test10() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-NEXT: [[TMP1:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; IS________NPM-NEXT: store i32 10, i32* [[TMP1]], align 4
; IS________NPM-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test_lifetime() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[TMP1]])
; IS________OPM-NEXT: call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; IS________OPM-NEXT: [[TMP2:%.*]] = bitcast i8* [[TMP1]] to i32*
; IS________OPM-NEXT: store i32 10, i32* [[TMP2]], align 4
; IS________OPM-NEXT: [[TMP3:%.*]] = load i32, i32* [[TMP2]], align 4
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull align 4 dereferenceable(4) [[TMP1]])
; IS________OPM-NEXT: ret i32 [[TMP3]]
;
; IS________NPM-LABEL: define {{[^@]+}}@test_lifetime() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree [[DOTH2S]])
; IS________NPM-NEXT: call void @llvm.lifetime.start.p0i8(i64 noundef 4, i8* noalias nocapture nofree noundef nonnull align 4 dereferenceable(4) [[DOTH2S]])
; IS________NPM-NEXT: [[TMP1:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; IS________NPM-NEXT: store i32 10, i32* [[TMP1]], align 4
; IS________NPM-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4
; IS________NPM-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() {
; IS________OPM-LABEL: define {{[^@]+}}@test11() {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: tail call void @sync_will_return(i8* [[TMP1]]) #[[ATTR9]]
; IS________OPM-NEXT: tail call void @free(i8* nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test11() {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: tail call void @sync_will_return(i8* [[DOTH2S]]) #[[ATTR10]]
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@irreducible_cfg
; IS________OPM-SAME: (i32 [[TMP0:%.*]]) {
; IS________OPM-NEXT: [[TMP2:%.*]] = call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[TMP3:%.*]] = bitcast i8* [[TMP2]] to i32*
; IS________OPM-NEXT: store i32 10, i32* [[TMP3]], align 4
; IS________OPM-NEXT: [[TMP4:%.*]] = icmp eq i32 [[TMP0]], 1
; IS________OPM-NEXT: br i1 [[TMP4]], label [[TMP5:%.*]], label [[TMP7:%.*]]
; IS________OPM: 5:
; IS________OPM-NEXT: [[TMP6:%.*]] = add nsw i32 [[TMP0]], 5
; IS________OPM-NEXT: br label [[TMP13:%.*]]
; IS________OPM: 7:
; IS________OPM-NEXT: br label [[TMP8:%.*]]
; IS________OPM: 8:
; IS________OPM-NEXT: [[DOT0:%.*]] = phi i32 [ [[TMP14:%.*]], [[TMP13]] ], [ 1, [[TMP7]] ]
; IS________OPM-NEXT: [[TMP9:%.*]] = load i32, i32* [[TMP3]], align 4
; IS________OPM-NEXT: [[TMP10:%.*]] = add nsw i32 [[TMP9]], -1
; IS________OPM-NEXT: store i32 [[TMP10]], i32* [[TMP3]], align 4
; IS________OPM-NEXT: [[TMP11:%.*]] = icmp ne i32 [[TMP9]], 0
; IS________OPM-NEXT: br i1 [[TMP11]], label [[TMP12:%.*]], label [[TMP15:%.*]]
; IS________OPM: 12:
; IS________OPM-NEXT: br label [[TMP13]]
; IS________OPM: 13:
; IS________OPM-NEXT: [[DOT1:%.*]] = phi i32 [ [[TMP6]], [[TMP5]] ], [ [[DOT0]], [[TMP12]] ]
; IS________OPM-NEXT: [[TMP14]] = add nsw i32 [[DOT1]], 1
; IS________OPM-NEXT: br label [[TMP8]]
; IS________OPM: 15:
; IS________OPM-NEXT: [[TMP16:%.*]] = bitcast i32* [[TMP3]] to i8*
; IS________OPM-NEXT: call void @free(i8* nocapture noundef [[TMP16]])
; IS________OPM-NEXT: [[TMP17:%.*]] = load i32, i32* [[TMP3]], align 4
; IS________OPM-NEXT: ret i32 [[TMP17]]
;
; IS________NPM-LABEL: define {{[^@]+}}@irreducible_cfg
; IS________NPM-SAME: (i32 [[TMP0:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: [[TMP2:%.*]] = bitcast i8* [[DOTH2S]] to i32*
; IS________NPM-NEXT: store i32 10, i32* [[TMP2]], align 4
; IS________NPM-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP0]], 1
; IS________NPM-NEXT: br i1 [[TMP3]], label [[TMP4:%.*]], label [[TMP6:%.*]]
; IS________NPM: 4:
; IS________NPM-NEXT: [[TMP5:%.*]] = add nsw i32 [[TMP0]], 5
; IS________NPM-NEXT: br label [[TMP12:%.*]]
; IS________NPM: 6:
; IS________NPM-NEXT: br label [[TMP7:%.*]]
; IS________NPM: 7:
; IS________NPM-NEXT: [[DOT0:%.*]] = phi i32 [ [[TMP13:%.*]], [[TMP12]] ], [ 1, [[TMP6]] ]
; IS________NPM-NEXT: [[TMP8:%.*]] = load i32, i32* [[TMP2]], align 4
; IS________NPM-NEXT: [[TMP9:%.*]] = add nsw i32 [[TMP8]], -1
; IS________NPM-NEXT: store i32 [[TMP9]], i32* [[TMP2]], align 4
; IS________NPM-NEXT: [[TMP10:%.*]] = icmp ne i32 [[TMP8]], 0
; IS________NPM-NEXT: br i1 [[TMP10]], label [[TMP11:%.*]], label [[TMP14:%.*]]
; IS________NPM: 11:
; IS________NPM-NEXT: br label [[TMP12]]
; IS________NPM: 12:
; IS________NPM-NEXT: [[DOT1:%.*]] = phi i32 [ [[TMP5]], [[TMP4]] ], [ [[DOT0]], [[TMP11]] ]
; IS________NPM-NEXT: [[TMP13]] = add nsw i32 [[DOT1]], 1
; IS________NPM-NEXT: br label [[TMP7]]
; IS________NPM: 14:
; IS________NPM-NEXT: [[TMP15:%.*]] = load i32, i32* [[TMP2]], align 4
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test16a
; IS________OPM-SAME: (i8 [[V:%.*]], i8** nocapture nofree readnone [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: store i8 [[V]], i8* [[TMP1]], align 1
; IS________OPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree noundef nonnull dereferenceable(1) [[TMP1]])
; IS________OPM-NEXT: tail call void @free(i8* noalias nocapture noundef nonnull dereferenceable(1) [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test16a
; IS________NPM-SAME: (i8 [[V:%.*]], i8** nocapture nofree readnone [[P:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: store i8 [[V]], i8* [[DOTH2S]], align 1
; IS________NPM-NEXT: tail call void @no_sync_func(i8* noalias nocapture nofree noundef nonnull dereferenceable(1) [[DOTH2S]])
; IS________NPM-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) {
; IS________OPM-LABEL: define {{[^@]+}}@test16c
; IS________OPM-SAME: (i8 [[V:%.*]], i8** nocapture nofree writeonly [[P:%.*]]) {
; IS________OPM-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: store i8* [[TMP1]], i8** [[P]], align 8
; IS________OPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[TMP1]]) #[[ATTR9]]
; IS________OPM-NEXT: tail call void @free(i8* nocapture [[TMP1]])
; IS________OPM-NEXT: ret void
;
; IS________NPM-LABEL: define {{[^@]+}}@test16c
; IS________NPM-SAME: (i8 [[V:%.*]], i8** nocapture nofree writeonly [[P:%.*]]) {
; IS________NPM-NEXT: [[DOTH2S:%.*]] = alloca i8, i64 4, align 1
; IS________NPM-NEXT: store i8* [[DOTH2S]], i8** [[P]], align 8
; IS________NPM-NEXT: tail call void @no_sync_func(i8* nocapture nofree [[DOTH2S]]) #[[ATTR10]]
; IS________NPM-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
}
;.
; IS________OPM: attributes #[[ATTR0:[0-9]+]] = { allockind("alloc,uninitialized") allocsize(0) }
; IS________OPM: attributes #[[ATTR1:[0-9]+]] = { nounwind willreturn }
; IS________OPM: attributes #[[ATTR2:[0-9]+]] = { nofree nosync willreturn }
; IS________OPM: attributes #[[ATTR3:[0-9]+]] = { nofree nounwind }
; IS________OPM: attributes #[[ATTR4]] = { noreturn }
; IS________OPM: attributes #[[ATTR5:[0-9]+]] = { allockind("free") }
; IS________OPM: attributes #[[ATTR6:[0-9]+]] = { argmemonly nocallback nofree nosync nounwind willreturn }
; IS________OPM: attributes #[[ATTR7:[0-9]+]] = { allockind("alloc,uninitialized,aligned") allocsize(1) }
; IS________OPM: attributes #[[ATTR8:[0-9]+]] = { allockind("alloc,zeroed") allocsize(0,1) }
; IS________OPM: attributes #[[ATTR9]] = { nounwind }
;.
; IS________NPM: attributes #[[ATTR0:[0-9]+]] = { allockind("alloc,uninitialized") allocsize(0) }
; IS________NPM: attributes #[[ATTR1:[0-9]+]] = { nounwind willreturn }
; IS________NPM: attributes #[[ATTR2:[0-9]+]] = { nofree nosync willreturn }
; IS________NPM: attributes #[[ATTR3:[0-9]+]] = { nofree nounwind }
; IS________NPM: attributes #[[ATTR4]] = { noreturn }
; IS________NPM: attributes #[[ATTR5:[0-9]+]] = { allockind("free") }
; IS________NPM: attributes #[[ATTR6:[0-9]+]] = { argmemonly nocallback nofree nosync nounwind willreturn }
; IS________NPM: attributes #[[ATTR7:[0-9]+]] = { allockind("alloc,uninitialized,aligned") allocsize(1) }
; IS________NPM: attributes #[[ATTR8:[0-9]+]] = { allockind("alloc,zeroed") allocsize(0,1) }
; IS________NPM: attributes #[[ATTR9:[0-9]+]] = { argmemonly nocallback nofree nounwind willreturn writeonly }
; IS________NPM: attributes #[[ATTR10]] = { nounwind }
;.