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llvm / llvm-project / llvm / b72b4128f221fd5086a1ae46aba7b2fcbf0d6384 / . / test / Transforms / FunctionAttrs / nonnull.ll
blob: 33e9b377d709372bea0a1d79bdb26852bfc96c00 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt -S -passes=function-attrs -enable-nonnull-arg-prop %s | FileCheck %s --check-prefixes=COMMON,FNATTRS
; RUN: opt -S -passes=attributor-light %s | FileCheck %s --check-prefixes=COMMON,ATTRIBUTOR
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
declare nonnull ptr @ret_nonnull()
; Return a pointer trivially nonnull (call return attribute)
define ptr @test1() {
; COMMON-LABEL: define nonnull ptr @test1() {
; COMMON-NEXT: [[RET:%.*]] = call ptr @ret_nonnull()
; COMMON-NEXT: ret ptr [[RET]]
;
%ret = call ptr @ret_nonnull()
ret ptr %ret
}
; Return a pointer trivially nonnull (argument attribute)
define ptr @test2(ptr nonnull %p) {
; FNATTRS-LABEL: define nonnull ptr @test2
; FNATTRS-SAME: (ptr nonnull readnone returned [[P:%.*]]) #[[ATTR0:[0-9]+]] {
; FNATTRS-NEXT: ret ptr [[P]]
;
; ATTRIBUTOR-LABEL: define nonnull ptr @test2
; ATTRIBUTOR-SAME: (ptr nofree nonnull readnone [[P:%.*]]) #[[ATTR0:[0-9]+]] {
; ATTRIBUTOR-NEXT: ret ptr [[P]]
;
ret ptr %p
}
; Given an SCC where one of the functions can not be marked nonnull,
; can we still mark the other one which is trivially nonnull
define ptr @scc_binder(i1 %c) {
; COMMON-LABEL: define ptr @scc_binder
; COMMON-SAME: (i1 [[C:%.*]]) {
; COMMON-NEXT: br i1 [[C]], label [[REC:%.*]], label [[END:%.*]]
; COMMON: rec:
; COMMON-NEXT: [[TMP1:%.*]] = call ptr @test3(i1 [[C]])
; COMMON-NEXT: br label [[END]]
; COMMON: end:
; COMMON-NEXT: ret ptr null
;
br i1 %c, label %rec, label %end
rec:
call ptr @test3(i1 %c)
br label %end
end:
ret ptr null
}
define ptr @test3(i1 %c) {
; COMMON-LABEL: define nonnull ptr @test3
; COMMON-SAME: (i1 [[C:%.*]]) {
; COMMON-NEXT: [[TMP1:%.*]] = call ptr @scc_binder(i1 [[C]])
; COMMON-NEXT: [[RET:%.*]] = call ptr @ret_nonnull()
; COMMON-NEXT: ret ptr [[RET]]
;
call ptr @scc_binder(i1 %c)
%ret = call ptr @ret_nonnull()
ret ptr %ret
}
; Given a mutual recursive set of functions, we can mark them
; nonnull if neither can ever return null. (In this case, they
; just never return period.)
define ptr @test4_helper() {
; FNATTRS-LABEL: define noalias nonnull ptr @test4_helper
; FNATTRS-SAME: () #[[ATTR1:[0-9]+]] {
; FNATTRS-NEXT: [[RET:%.*]] = call ptr @test4()
; FNATTRS-NEXT: ret ptr [[RET]]
;
; ATTRIBUTOR-LABEL: define ptr @test4_helper
; ATTRIBUTOR-SAME: () #[[ATTR1:[0-9]+]] {
; ATTRIBUTOR-NEXT: [[RET:%.*]] = call ptr @test4() #[[ATTR1]]
; ATTRIBUTOR-NEXT: ret ptr [[RET]]
;
%ret = call ptr @test4()
ret ptr %ret
}
define ptr @test4() {
; FNATTRS-LABEL: define noalias nonnull ptr @test4
; FNATTRS-SAME: () #[[ATTR1]] {
; FNATTRS-NEXT: [[RET:%.*]] = call ptr @test4_helper()
; FNATTRS-NEXT: ret ptr [[RET]]
;
; ATTRIBUTOR-LABEL: define ptr @test4
; ATTRIBUTOR-SAME: () #[[ATTR1]] {
; ATTRIBUTOR-NEXT: [[RET:%.*]] = call ptr @test4_helper() #[[ATTR1]]
; ATTRIBUTOR-NEXT: ret ptr [[RET]]
;
%ret = call ptr @test4_helper()
ret ptr %ret
}
; Given a mutual recursive set of functions which *can* return null
; make sure we haven't marked them as nonnull.
define ptr @test5_helper(i1 %c) {
; FNATTRS-LABEL: define noalias ptr @test5_helper
; FNATTRS-SAME: (i1 [[C:%.*]]) #[[ATTR1]] {
; FNATTRS-NEXT: br i1 [[C]], label [[REC:%.*]], label [[END:%.*]]
; FNATTRS: rec:
; FNATTRS-NEXT: [[RET:%.*]] = call ptr @test5(i1 [[C]])
; FNATTRS-NEXT: br label [[END]]
; FNATTRS: end:
; FNATTRS-NEXT: ret ptr null
;
; ATTRIBUTOR-LABEL: define ptr @test5_helper
; ATTRIBUTOR-SAME: (i1 [[C:%.*]]) #[[ATTR1]] {
; ATTRIBUTOR-NEXT: br i1 [[C]], label [[REC:%.*]], label [[END:%.*]]
; ATTRIBUTOR: rec:
; ATTRIBUTOR-NEXT: [[RET:%.*]] = call ptr @test5(i1 [[C]]) #[[ATTR1]]
; ATTRIBUTOR-NEXT: br label [[END]]
; ATTRIBUTOR: end:
; ATTRIBUTOR-NEXT: ret ptr null
;
br i1 %c, label %rec, label %end
rec:
%ret = call ptr @test5(i1 %c)
br label %end
end:
ret ptr null
}
define ptr @test5(i1 %c) {
; FNATTRS-LABEL: define noalias ptr @test5
; FNATTRS-SAME: (i1 [[C:%.*]]) #[[ATTR1]] {
; FNATTRS-NEXT: [[RET:%.*]] = call ptr @test5_helper(i1 [[C]])
; FNATTRS-NEXT: ret ptr [[RET]]
;
; ATTRIBUTOR-LABEL: define ptr @test5
; ATTRIBUTOR-SAME: (i1 [[C:%.*]]) #[[ATTR1]] {
; ATTRIBUTOR-NEXT: [[RET:%.*]] = call ptr @test5_helper(i1 [[C]]) #[[ATTR1]]
; ATTRIBUTOR-NEXT: ret ptr [[RET]]
;
%ret = call ptr @test5_helper(i1 %c)
ret ptr %ret
}
; Local analysis, but going through a self recursive phi
define ptr @test6a() {
; COMMON-LABEL: define nonnull ptr @test6a() {
; COMMON-NEXT: entry:
; COMMON-NEXT: [[RET:%.*]] = call ptr @ret_nonnull()
; COMMON-NEXT: br label [[LOOP:%.*]]
; COMMON: loop:
; COMMON-NEXT: [[PHI:%.*]] = phi ptr [ [[RET]], [[ENTRY:%.*]] ], [ [[PHI]], [[LOOP]] ]
; COMMON-NEXT: br i1 undef, label [[LOOP]], label [[EXIT:%.*]]
; COMMON: exit:
; COMMON-NEXT: ret ptr [[PHI]]
;
entry:
%ret = call ptr @ret_nonnull()
br label %loop
loop:
%phi = phi ptr [%ret, %entry], [%phi, %loop]
br i1 undef, label %loop, label %exit
exit:
ret ptr %phi
}
define ptr @test6b(i1 %c) {
; COMMON-LABEL: define nonnull ptr @test6b
; COMMON-SAME: (i1 [[C:%.*]]) {
; COMMON-NEXT: entry:
; COMMON-NEXT: [[RET:%.*]] = call ptr @ret_nonnull()
; COMMON-NEXT: br label [[LOOP:%.*]]
; COMMON: loop:
; COMMON-NEXT: [[PHI:%.*]] = phi ptr [ [[RET]], [[ENTRY:%.*]] ], [ [[PHI]], [[LOOP]] ]
; COMMON-NEXT: br i1 [[C]], label [[LOOP]], label [[EXIT:%.*]]
; COMMON: exit:
; COMMON-NEXT: ret ptr [[PHI]]
;
entry:
%ret = call ptr @ret_nonnull()
br label %loop
loop:
%phi = phi ptr [%ret, %entry], [%phi, %loop]
br i1 %c, label %loop, label %exit
exit:
ret ptr %phi
}
define ptr @test7(ptr %a) {
; FNATTRS-LABEL: define ptr @test7
; FNATTRS-SAME: (ptr readnone returned [[A:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: ret ptr [[A]]
;
; ATTRIBUTOR-LABEL: define ptr @test7
; ATTRIBUTOR-SAME: (ptr nofree readnone [[A:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: ret ptr [[A]]
;
ret ptr %a
}
define ptr @test8(ptr %a) {
; FNATTRS-LABEL: define nonnull ptr @test8
; FNATTRS-SAME: (ptr readnone [[A:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 1
; FNATTRS-NEXT: ret ptr [[B]]
;
; ATTRIBUTOR-LABEL: define nonnull ptr @test8
; ATTRIBUTOR-SAME: (ptr nofree readnone [[A:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 1
; ATTRIBUTOR-NEXT: ret ptr [[B]]
;
%b = getelementptr inbounds i8, ptr %a, i64 1
ret ptr %b
}
define ptr @test9(ptr %a, i64 %n) {
; FNATTRS-LABEL: define ptr @test9
; FNATTRS-SAME: (ptr readnone [[A:%.*]], i64 [[N:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[N]]
; FNATTRS-NEXT: ret ptr [[B]]
;
; ATTRIBUTOR-LABEL: define ptr @test9
; ATTRIBUTOR-SAME: (ptr nofree readnone [[A:%.*]], i64 [[N:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[N]]
; ATTRIBUTOR-NEXT: ret ptr [[B]]
;
%b = getelementptr inbounds i8, ptr %a, i64 %n
ret ptr %b
}
declare void @llvm.assume(i1)
; FIXME: missing nonnull
define ptr @test10(ptr %a, i64 %n) {
; FNATTRS-LABEL: define ptr @test10
; FNATTRS-SAME: (ptr readnone [[A:%.*]], i64 [[N:%.*]]) #[[ATTR3:[0-9]+]] {
; FNATTRS-NEXT: [[CMP:%.*]] = icmp ne i64 [[N]], 0
; FNATTRS-NEXT: call void @llvm.assume(i1 [[CMP]])
; FNATTRS-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[N]]
; FNATTRS-NEXT: ret ptr [[B]]
;
; ATTRIBUTOR-LABEL: define ptr @test10
; ATTRIBUTOR-SAME: (ptr nofree readnone [[A:%.*]], i64 [[N:%.*]]) #[[ATTR3:[0-9]+]] {
; ATTRIBUTOR-NEXT: [[CMP:%.*]] = icmp ne i64 [[N]], 0
; ATTRIBUTOR-NEXT: call void @llvm.assume(i1 [[CMP]]) #[[ATTR14:[0-9]+]]
; ATTRIBUTOR-NEXT: [[B:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[N]]
; ATTRIBUTOR-NEXT: ret ptr [[B]]
;
%cmp = icmp ne i64 %n, 0
call void @llvm.assume(i1 %cmp)
%b = getelementptr inbounds i8, ptr %a, i64 %n
ret ptr %b
}
; TEST 11
; char* test11(char *p) {
; return p? p: nonnull();
; }
define ptr @test11(ptr) local_unnamed_addr {
; FNATTRS-LABEL: define nonnull ptr @test11
; FNATTRS-SAME: (ptr readnone [[TMP0:%.*]]) local_unnamed_addr {
; FNATTRS-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null
; FNATTRS-NEXT: br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
; FNATTRS: 3:
; FNATTRS-NEXT: [[TMP4:%.*]] = tail call ptr @ret_nonnull()
; FNATTRS-NEXT: br label [[TMP5]]
; FNATTRS: 5:
; FNATTRS-NEXT: [[TMP6:%.*]] = phi ptr [ [[TMP4]], [[TMP3]] ], [ [[TMP0]], [[TMP1:%.*]] ]
; FNATTRS-NEXT: ret ptr [[TMP6]]
;
; ATTRIBUTOR-LABEL: define nonnull ptr @test11
; ATTRIBUTOR-SAME: (ptr [[TMP0:%.*]]) local_unnamed_addr {
; ATTRIBUTOR-NEXT: [[TMP2:%.*]] = icmp eq ptr [[TMP0]], null
; ATTRIBUTOR-NEXT: br i1 [[TMP2]], label [[TMP3:%.*]], label [[TMP5:%.*]]
; ATTRIBUTOR: 3:
; ATTRIBUTOR-NEXT: [[TMP4:%.*]] = tail call ptr @ret_nonnull()
; ATTRIBUTOR-NEXT: br label [[TMP5]]
; ATTRIBUTOR: 5:
; ATTRIBUTOR-NEXT: [[TMP6:%.*]] = phi ptr [ [[TMP4]], [[TMP3]] ], [ [[TMP0]], [[TMP1:%.*]] ]
; ATTRIBUTOR-NEXT: ret ptr [[TMP6]]
;
%2 = icmp eq ptr %0, null
br i1 %2, label %3, label %5
; <label>:3: ; preds = %1
%4 = tail call ptr @ret_nonnull()
br label %5
; <label>:5: ; preds = %3, %1
%6 = phi ptr [ %4, %3 ], [ %0, %1 ]
ret ptr %6
}
; TEST 12
; Simple CallSite Test
declare void @test12_helper(ptr)
define void @test12(ptr nonnull %a) {
; COMMON-LABEL: define void @test12
; COMMON-SAME: (ptr nonnull [[A:%.*]]) {
; COMMON-NEXT: tail call void @test12_helper(ptr [[A]])
; COMMON-NEXT: ret void
;
tail call void @test12_helper(ptr %a)
ret void
}
; TEST 13
; Simple Argument Tests
declare ptr @unknown()
define void @test13_helper() {
; FNATTRS-LABEL: define void @test13_helper() {
; FNATTRS-NEXT: [[NONNULLPTR:%.*]] = tail call ptr @ret_nonnull()
; FNATTRS-NEXT: [[MAYBENULLPTR:%.*]] = tail call ptr @unknown()
; FNATTRS-NEXT: tail call void @test13(ptr [[NONNULLPTR]], ptr [[NONNULLPTR]], ptr [[MAYBENULLPTR]])
; FNATTRS-NEXT: tail call void @test13(ptr [[NONNULLPTR]], ptr [[MAYBENULLPTR]], ptr [[NONNULLPTR]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @test13_helper() {
; ATTRIBUTOR-NEXT: [[NONNULLPTR:%.*]] = tail call ptr @ret_nonnull()
; ATTRIBUTOR-NEXT: [[MAYBENULLPTR:%.*]] = tail call ptr @unknown()
; ATTRIBUTOR-NEXT: tail call void @test13(ptr nocapture nofree nonnull readnone [[NONNULLPTR]], ptr nocapture nofree nonnull readnone [[NONNULLPTR]], ptr nocapture nofree readnone [[MAYBENULLPTR]])
; ATTRIBUTOR-NEXT: tail call void @test13(ptr nocapture nofree nonnull readnone [[NONNULLPTR]], ptr nocapture nofree readnone [[MAYBENULLPTR]], ptr nocapture nofree nonnull readnone [[NONNULLPTR]])
; ATTRIBUTOR-NEXT: ret void
;
%nonnullptr = tail call ptr @ret_nonnull()
%maybenullptr = tail call ptr @unknown()
tail call void @test13(ptr %nonnullptr, ptr %nonnullptr, ptr %maybenullptr)
tail call void @test13(ptr %nonnullptr, ptr %maybenullptr, ptr %nonnullptr)
ret void
}
define internal void @test13(ptr %a, ptr %b, ptr %c) {
; FNATTRS-LABEL: define internal void @test13
; FNATTRS-SAME: (ptr nocapture readnone [[A:%.*]], ptr nocapture readnone [[B:%.*]], ptr nocapture readnone [[C:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define internal void @test13
; ATTRIBUTOR-SAME: (ptr nocapture nofree readnone [[A:%.*]], ptr nocapture nofree readnone [[B:%.*]], ptr nocapture nofree readnone [[C:%.*]]) #[[ATTR4:[0-9]+]] {
; ATTRIBUTOR-NEXT: ret void
;
ret void
}
declare nonnull ptr @nonnull()
; TEST 14
; Complex propagation
; Argument of f1, f2, f3 can be marked with nonnull.
; * Argument
; 1. In f1:bb6, %arg can be marked with nonnull because of the comparison in bb1
; 2. Because f2 is internal function, f2(ptr %arg) -> @f2(ptr nonnull %arg)
; 3. In f1:bb4 %tmp5 is nonnull and f3 is internal function.
; Then, f3(ptr %arg) -> @f3(ptr nonnull %arg)
; 4. We get nonnull in whole f1 call sites so f1(ptr %arg) -> @f1(ptr nonnull %arg)
define internal ptr @f1(ptr %arg) {
; FIXME: missing nonnull It should be nonnull @f1(ptr nonnull readonly %arg)
; FNATTRS-LABEL: define internal nonnull ptr @f1
; FNATTRS-SAME: (ptr readonly [[ARG:%.*]]) #[[ATTR4:[0-9]+]] {
; FNATTRS-NEXT: bb:
; FNATTRS-NEXT: [[TMP:%.*]] = icmp eq ptr [[ARG]], null
; FNATTRS-NEXT: br i1 [[TMP]], label [[BB9:%.*]], label [[BB1:%.*]]
; FNATTRS: bb1:
; FNATTRS-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARG]], align 4
; FNATTRS-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP2]], 0
; FNATTRS-NEXT: br i1 [[TMP3]], label [[BB6:%.*]], label [[BB4:%.*]]
; FNATTRS: bb4:
; FNATTRS-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[ARG]], i64 1
; FNATTRS-NEXT: [[TMP5B:%.*]] = tail call ptr @f3(ptr [[TMP5]])
; FNATTRS-NEXT: [[TMP5C:%.*]] = getelementptr inbounds i32, ptr [[TMP5B]], i64 -1
; FNATTRS-NEXT: br label [[BB9]]
; FNATTRS: bb6:
; FNATTRS-NEXT: [[TMP7:%.*]] = tail call ptr @f2(ptr [[ARG]])
; FNATTRS-NEXT: ret ptr [[TMP7]]
; FNATTRS: bb9:
; FNATTRS-NEXT: [[TMP10:%.*]] = phi ptr [ [[TMP5C]], [[BB4]] ], [ inttoptr (i64 4 to ptr), [[BB:%.*]] ]
; FNATTRS-NEXT: ret ptr [[TMP10]]
;
; ATTRIBUTOR-LABEL: define internal ptr @f1
; ATTRIBUTOR-SAME: (ptr nofree readonly [[ARG:%.*]]) #[[ATTR5:[0-9]+]] {
; ATTRIBUTOR-NEXT: bb:
; ATTRIBUTOR-NEXT: [[TMP:%.*]] = icmp eq ptr [[ARG]], null
; ATTRIBUTOR-NEXT: br i1 [[TMP]], label [[BB9:%.*]], label [[BB1:%.*]]
; ATTRIBUTOR: bb1:
; ATTRIBUTOR-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARG]], align 4
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = icmp eq i32 [[TMP2]], 0
; ATTRIBUTOR-NEXT: br i1 [[TMP3]], label [[BB6:%.*]], label [[BB4:%.*]]
; ATTRIBUTOR: bb4:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = getelementptr inbounds i32, ptr [[ARG]], i64 1
; ATTRIBUTOR-NEXT: [[TMP5B:%.*]] = tail call ptr @f3(ptr readonly [[TMP5]]) #[[ATTR15:[0-9]+]]
; ATTRIBUTOR-NEXT: [[TMP5C:%.*]] = getelementptr inbounds i32, ptr [[TMP5B]], i64 -1
; ATTRIBUTOR-NEXT: br label [[BB9]]
; ATTRIBUTOR: bb6:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = tail call ptr @f2(ptr readonly [[ARG]]) #[[ATTR15]]
; ATTRIBUTOR-NEXT: ret ptr [[TMP7]]
; ATTRIBUTOR: bb9:
; ATTRIBUTOR-NEXT: [[TMP10:%.*]] = phi ptr [ [[TMP5C]], [[BB4]] ], [ inttoptr (i64 4 to ptr), [[BB:%.*]] ]
; ATTRIBUTOR-NEXT: ret ptr [[TMP10]]
;
bb:
%tmp = icmp eq ptr %arg, null
br i1 %tmp, label %bb9, label %bb1
bb1: ; preds = %bb
%tmp2 = load i32, ptr %arg, align 4
%tmp3 = icmp eq i32 %tmp2, 0
br i1 %tmp3, label %bb6, label %bb4
bb4: ; preds = %bb1
%tmp5 = getelementptr inbounds i32, ptr %arg, i64 1
%tmp5b = tail call ptr @f3(ptr %tmp5)
%tmp5c = getelementptr inbounds i32, ptr %tmp5b, i64 -1
br label %bb9
bb6: ; preds = %bb1
; FIXME: missing nonnull. It should be @f2(ptr nonnull %arg)
%tmp7 = tail call ptr @f2(ptr %arg)
ret ptr %tmp7
bb9: ; preds = %bb4, %bb
%tmp10 = phi ptr [ %tmp5c, %bb4 ], [ inttoptr (i64 4 to ptr), %bb ]
ret ptr %tmp10
}
define internal ptr @f2(ptr %arg) {
; FIXME: missing nonnull. It should be nonnull @f2(ptr nonnull %arg)
; FNATTRS-LABEL: define internal nonnull ptr @f2
; FNATTRS-SAME: (ptr [[ARG:%.*]]) #[[ATTR4]] {
; FNATTRS-NEXT: bb:
; FNATTRS-NEXT: [[TMP:%.*]] = tail call ptr @f1(ptr [[ARG]])
; FNATTRS-NEXT: ret ptr [[TMP]]
;
; ATTRIBUTOR-LABEL: define internal ptr @f2
; ATTRIBUTOR-SAME: (ptr readonly [[ARG:%.*]]) #[[ATTR5]] {
; ATTRIBUTOR-NEXT: bb:
; ATTRIBUTOR-NEXT: [[TMP:%.*]] = tail call ptr @f1(ptr readonly [[ARG]]) #[[ATTR15]]
; ATTRIBUTOR-NEXT: ret ptr [[TMP]]
;
bb:
; FIXME: missing nonnull. It should be @f1(ptr nonnull readonly %arg)
%tmp = tail call ptr @f1(ptr %arg)
ret ptr %tmp
}
define dso_local noalias ptr @f3(ptr %arg) {
; FIXME: missing nonnull. It should be nonnull @f3(ptr nonnull readonly %arg)
; FNATTRS-LABEL: define dso_local noalias nonnull ptr @f3
; FNATTRS-SAME: (ptr [[ARG:%.*]]) #[[ATTR4]] {
; FNATTRS-NEXT: bb:
; FNATTRS-NEXT: [[TMP:%.*]] = call ptr @f1(ptr [[ARG]])
; FNATTRS-NEXT: ret ptr [[TMP]]
;
; ATTRIBUTOR-LABEL: define dso_local noalias ptr @f3
; ATTRIBUTOR-SAME: (ptr nofree readonly [[ARG:%.*]]) #[[ATTR5]] {
; ATTRIBUTOR-NEXT: bb:
; ATTRIBUTOR-NEXT: [[TMP:%.*]] = call ptr @f1(ptr nofree readonly [[ARG]]) #[[ATTR15]]
; ATTRIBUTOR-NEXT: ret ptr [[TMP]]
;
bb:
; FIXME: missing nonnull. It should be @f1(ptr nonnull readonly %arg)
%tmp = call ptr @f1(ptr %arg)
ret ptr %tmp
}
; TEST 15
define void @f15(ptr %arg) {
; FNATTRS-LABEL: define void @f15
; FNATTRS-SAME: (ptr [[ARG:%.*]]) {
; FNATTRS-NEXT: tail call void @use1(ptr dereferenceable(4) [[ARG]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @f15
; ATTRIBUTOR-SAME: (ptr nonnull [[ARG:%.*]]) {
; ATTRIBUTOR-NEXT: tail call void @use1(ptr nonnull dereferenceable(4) [[ARG]])
; ATTRIBUTOR-NEXT: ret void
;
tail call void @use1(ptr dereferenceable(4) %arg)
ret void
}
declare void @fun0() #1
declare void @fun1(ptr) #1
declare void @fun2(ptr, ptr) #1
declare void @fun3(ptr, ptr, ptr) #1
; TEST 16 simple path test
; if(..)
; fun2(nonnull %a, nonnull %b)
; else
; fun2(nonnull %a, %b)
; We can say that %a is nonnull but %b is not.
define void @f16(ptr %a, ptr %b, i8 %c) {
; FIXME: missing nonnull on %a
; FNATTRS-LABEL: define void @f16
; FNATTRS-SAME: (ptr [[A:%.*]], ptr [[B:%.*]], i8 [[C:%.*]]) #[[ATTR6:[0-9]+]] {
; FNATTRS-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; FNATTRS-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; FNATTRS: if.then:
; FNATTRS-NEXT: tail call void @fun2(ptr nonnull [[A]], ptr nonnull [[B]])
; FNATTRS-NEXT: ret void
; FNATTRS: if.else:
; FNATTRS-NEXT: tail call void @fun2(ptr nonnull [[A]], ptr [[B]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @f16
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr [[B:%.*]], i8 [[C:%.*]]) #[[ATTR7:[0-9]+]] {
; ATTRIBUTOR-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; ATTRIBUTOR-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; ATTRIBUTOR: if.then:
; ATTRIBUTOR-NEXT: tail call void @fun2(ptr nonnull [[A]], ptr nonnull [[B]]) #[[ATTR16:[0-9]+]]
; ATTRIBUTOR-NEXT: ret void
; ATTRIBUTOR: if.else:
; ATTRIBUTOR-NEXT: tail call void @fun2(ptr nonnull [[A]], ptr [[B]]) #[[ATTR16]]
; ATTRIBUTOR-NEXT: ret void
;
%cmp = icmp eq i8 %c, 0
br i1 %cmp, label %if.then, label %if.else
if.then:
tail call void @fun2(ptr nonnull %a, ptr nonnull %b)
ret void
if.else:
tail call void @fun2(ptr nonnull %a, ptr %b)
ret void
}
; TEST 17 explore child BB test
; if(..)
; ... (willreturn & nounwind)
; else
; ... (willreturn & nounwind)
; fun1(nonnull %a)
; We can say that %a is nonnull
define void @f17(ptr %a, i8 %c) {
; FNATTRS-LABEL: define void @f17
; FNATTRS-SAME: (ptr [[A:%.*]], i8 [[C:%.*]]) #[[ATTR6]] {
; FNATTRS-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; FNATTRS-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; FNATTRS: if.then:
; FNATTRS-NEXT: tail call void @fun0()
; FNATTRS-NEXT: br label [[CONT:%.*]]
; FNATTRS: if.else:
; FNATTRS-NEXT: tail call void @fun0()
; FNATTRS-NEXT: br label [[CONT]]
; FNATTRS: cont:
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @f17
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], i8 [[C:%.*]]) #[[ATTR7]] {
; ATTRIBUTOR-NEXT: [[CMP:%.*]] = icmp eq i8 [[C]], 0
; ATTRIBUTOR-NEXT: br i1 [[CMP]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; ATTRIBUTOR: if.then:
; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT:%.*]]
; ATTRIBUTOR: if.else:
; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT]]
; ATTRIBUTOR: cont:
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[A]]) #[[ATTR16]]
; ATTRIBUTOR-NEXT: ret void
;
%cmp = icmp eq i8 %c, 0
br i1 %cmp, label %if.then, label %if.else
if.then:
tail call void @fun0()
br label %cont
if.else:
tail call void @fun0()
br label %cont
cont:
tail call void @fun1(ptr nonnull %a)
ret void
}
; TEST 18 More complex test
; if(..)
; ... (willreturn & nounwind)
; else
; ... (willreturn & nounwind)
; if(..)
; ... (willreturn & nounwind)
; else
; ... (willreturn & nounwind)
; fun1(nonnull %a)
define void @f18(ptr %a, ptr %b, i8 %c) {
; FNATTRS-LABEL: define void @f18
; FNATTRS-SAME: (ptr [[A:%.*]], ptr [[B:%.*]], i8 [[C:%.*]]) #[[ATTR6]] {
; FNATTRS-NEXT: [[CMP1:%.*]] = icmp eq i8 [[C]], 0
; FNATTRS-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; FNATTRS: if.then:
; FNATTRS-NEXT: tail call void @fun0()
; FNATTRS-NEXT: br label [[CONT:%.*]]
; FNATTRS: if.else:
; FNATTRS-NEXT: tail call void @fun0()
; FNATTRS-NEXT: br label [[CONT]]
; FNATTRS: cont:
; FNATTRS-NEXT: [[CMP2:%.*]] = icmp eq i8 [[C]], 1
; FNATTRS-NEXT: br i1 [[CMP2]], label [[CONT_THEN:%.*]], label [[CONT_ELSE:%.*]]
; FNATTRS: cont.then:
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[B]])
; FNATTRS-NEXT: br label [[CONT2:%.*]]
; FNATTRS: cont.else:
; FNATTRS-NEXT: tail call void @fun0()
; FNATTRS-NEXT: br label [[CONT2]]
; FNATTRS: cont2:
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @f18
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr [[B:%.*]], i8 [[C:%.*]]) #[[ATTR7]] {
; ATTRIBUTOR-NEXT: [[CMP1:%.*]] = icmp eq i8 [[C]], 0
; ATTRIBUTOR-NEXT: br i1 [[CMP1]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; ATTRIBUTOR: if.then:
; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT:%.*]]
; ATTRIBUTOR: if.else:
; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT]]
; ATTRIBUTOR: cont:
; ATTRIBUTOR-NEXT: [[CMP2:%.*]] = icmp eq i8 [[C]], 1
; ATTRIBUTOR-NEXT: br i1 [[CMP2]], label [[CONT_THEN:%.*]], label [[CONT_ELSE:%.*]]
; ATTRIBUTOR: cont.then:
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[B]]) #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT2:%.*]]
; ATTRIBUTOR: cont.else:
; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR16]]
; ATTRIBUTOR-NEXT: br label [[CONT2]]
; ATTRIBUTOR: cont2:
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[A]]) #[[ATTR16]]
; ATTRIBUTOR-NEXT: ret void
;
%cmp1 = icmp eq i8 %c, 0
br i1 %cmp1, label %if.then, label %if.else
if.then:
tail call void @fun0()
br label %cont
if.else:
tail call void @fun0()
br label %cont
cont:
%cmp2 = icmp eq i8 %c, 1
br i1 %cmp2, label %cont.then, label %cont.else
cont.then:
tail call void @fun1(ptr nonnull %b)
br label %cont2
cont.else:
tail call void @fun0()
br label %cont2
cont2:
tail call void @fun1(ptr nonnull %a)
ret void
}
; TEST 19: Loop
define void @f19(ptr %a, ptr %b, i8 %c) {
; FIXME: missing nonnull on %b
; FNATTRS-LABEL: define void @f19
; FNATTRS-SAME: (ptr [[A:%.*]], ptr [[B:%.*]], i8 [[C:%.*]]) #[[ATTR7:[0-9]+]] {
; FNATTRS-NEXT: br label [[LOOP_HEADER:%.*]]
; FNATTRS: loop.header:
; FNATTRS-NEXT: [[CMP2:%.*]] = icmp eq i8 [[C]], 0
; FNATTRS-NEXT: br i1 [[CMP2]], label [[LOOP_BODY:%.*]], label [[LOOP_EXIT:%.*]]
; FNATTRS: loop.body:
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[B]])
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[A]])
; FNATTRS-NEXT: br label [[LOOP_HEADER]]
; FNATTRS: loop.exit:
; FNATTRS-NEXT: tail call void @fun1(ptr nonnull [[B]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @f19
; ATTRIBUTOR-SAME: (ptr [[A:%.*]], ptr nonnull [[B:%.*]], i8 [[C:%.*]]) #[[ATTR8:[0-9]+]] {
; ATTRIBUTOR-NEXT: br label [[LOOP_HEADER:%.*]]
; ATTRIBUTOR: loop.header:
; ATTRIBUTOR-NEXT: [[CMP2:%.*]] = icmp eq i8 [[C]], 0
; ATTRIBUTOR-NEXT: br i1 [[CMP2]], label [[LOOP_BODY:%.*]], label [[LOOP_EXIT:%.*]]
; ATTRIBUTOR: loop.body:
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[B]])
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: br label [[LOOP_HEADER]]
; ATTRIBUTOR: loop.exit:
; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[B]])
; ATTRIBUTOR-NEXT: ret void
;
br label %loop.header
loop.header:
%cmp2 = icmp eq i8 %c, 0
br i1 %cmp2, label %loop.body, label %loop.exit
loop.body:
tail call void @fun1(ptr nonnull %b)
tail call void @fun1(ptr nonnull %a)
br label %loop.header
loop.exit:
tail call void @fun1(ptr nonnull %b)
ret void
}
; Test propagation of nonnull callsite args back to caller.
declare void @use1(ptr %x)
declare void @use2(ptr %x, ptr %y);
declare void @use3(ptr %x, ptr %y, ptr %z);
declare void @use1nonnull(ptr nonnull noundef %x);
declare void @use1nonnull_without_noundef(ptr nonnull %x);
declare void @use2nonnull(ptr nonnull noundef %x, ptr nonnull noundef %y);
declare void @use3nonnull(ptr nonnull noundef %x, ptr nonnull noundef %y, ptr nonnull noundef %z);
declare i8 @use1safecall(ptr %x) nounwind willreturn ; nounwind+willreturn guarantees that execution continues to successor
; Without noundef, nonnull cannot be propagated to the parent
define void @parent_poison(ptr %a) {
; FNATTR-LABEL: @parent_poison(ptr %a)
; FNATTRS-LABEL: define void @parent_poison
; FNATTRS-SAME: (ptr [[A:%.*]]) {
; FNATTRS-NEXT: call void @use1nonnull_without_noundef(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @parent_poison
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]]) {
; ATTRIBUTOR-NEXT: call void @use1nonnull_without_noundef(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use1nonnull_without_noundef(ptr %a)
ret void
}
; Can't extend non-null to parent for any argument because the 2nd call is not guaranteed to execute.
define void @parent1(ptr %a, ptr %b, ptr %c) {
; COMMON-LABEL: define void @parent1
; COMMON-SAME: (ptr [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
; COMMON-NEXT: call void @use3(ptr [[C]], ptr [[A]], ptr [[B]])
; COMMON-NEXT: call void @use3nonnull(ptr [[B]], ptr [[C]], ptr [[A]])
; COMMON-NEXT: ret void
;
call void @use3(ptr %c, ptr %a, ptr %b)
call void @use3nonnull(ptr %b, ptr %c, ptr %a)
ret void
}
; Extend non-null to parent for all arguments.
define void @parent2(ptr %a, ptr %b, ptr %c) {
; FNATTRS-LABEL: define void @parent2
; FNATTRS-SAME: (ptr nonnull [[A:%.*]], ptr nonnull [[B:%.*]], ptr nonnull [[C:%.*]]) {
; FNATTRS-NEXT: call void @use3nonnull(ptr [[B]], ptr [[C]], ptr [[A]])
; FNATTRS-NEXT: call void @use3(ptr [[C]], ptr [[A]], ptr [[B]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @parent2
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr nonnull [[B:%.*]], ptr nonnull [[C:%.*]]) {
; ATTRIBUTOR-NEXT: call void @use3nonnull(ptr nonnull [[B]], ptr nonnull [[C]], ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: call void @use3(ptr [[C]], ptr [[A]], ptr [[B]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use3nonnull(ptr %b, ptr %c, ptr %a)
call void @use3(ptr %c, ptr %a, ptr %b)
ret void
}
; Extend non-null to parent for 1st argument.
define void @parent3(ptr %a, ptr %b, ptr %c) {
; FNATTRS-LABEL: define void @parent3
; FNATTRS-SAME: (ptr nonnull [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
; FNATTRS-NEXT: call void @use1nonnull(ptr [[A]])
; FNATTRS-NEXT: call void @use3(ptr [[C]], ptr [[B]], ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @parent3
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr [[B:%.*]], ptr [[C:%.*]]) {
; ATTRIBUTOR-NEXT: call void @use1nonnull(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: call void @use3(ptr [[C]], ptr [[B]], ptr [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use1nonnull(ptr %a)
call void @use3(ptr %c, ptr %b, ptr %a)
ret void
}
; Extend non-null to parent for last 2 arguments.
define void @parent4(ptr %a, ptr %b, ptr %c) {
; CHECK-LABEL: @parent4(ptr %a, ptr nonnull %b, ptr nonnull %c)
; CHECK-NEXT: call void @use2nonnull(ptr %c, ptr %b)
; CHECK-NEXT: call void @use2(ptr %a, ptr %c)
; CHECK-NEXT: call void @use1(ptr %b)
; FNATTRS-LABEL: define void @parent4
; FNATTRS-SAME: (ptr [[A:%.*]], ptr nonnull [[B:%.*]], ptr nonnull [[C:%.*]]) {
; FNATTRS-NEXT: call void @use2nonnull(ptr [[C]], ptr [[B]])
; FNATTRS-NEXT: call void @use2(ptr [[A]], ptr [[C]])
; FNATTRS-NEXT: call void @use1(ptr [[B]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @parent4
; ATTRIBUTOR-SAME: (ptr [[A:%.*]], ptr nonnull [[B:%.*]], ptr nonnull [[C:%.*]]) {
; ATTRIBUTOR-NEXT: call void @use2nonnull(ptr nonnull [[C]], ptr nonnull [[B]])
; ATTRIBUTOR-NEXT: call void @use2(ptr [[A]], ptr [[C]])
; ATTRIBUTOR-NEXT: call void @use1(ptr [[B]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use2nonnull(ptr %c, ptr %b)
call void @use2(ptr %a, ptr %c)
call void @use1(ptr %b)
ret void
}
; The callsite must execute in order for the attribute to transfer to the parent.
; It appears benign to extend non-null to the parent in this case, but we can't do that
; because it would incorrectly propagate the wrong information to its callers.
define void @parent5(ptr %a, i1 %a_is_notnull) {
; FNATTRS-LABEL: define void @parent5
; FNATTRS-SAME: (ptr [[A:%.*]], i1 [[A_IS_NOTNULL:%.*]]) {
; FNATTRS-NEXT: br i1 [[A_IS_NOTNULL]], label [[T:%.*]], label [[F:%.*]]
; FNATTRS: t:
; FNATTRS-NEXT: call void @use1nonnull(ptr [[A]])
; FNATTRS-NEXT: ret void
; FNATTRS: f:
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @parent5
; ATTRIBUTOR-SAME: (ptr [[A:%.*]], i1 [[A_IS_NOTNULL:%.*]]) {
; ATTRIBUTOR-NEXT: br i1 [[A_IS_NOTNULL]], label [[T:%.*]], label [[F:%.*]]
; ATTRIBUTOR: t:
; ATTRIBUTOR-NEXT: call void @use1nonnull(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret void
; ATTRIBUTOR: f:
; ATTRIBUTOR-NEXT: ret void
;
br i1 %a_is_notnull, label %t, label %f
t:
call void @use1nonnull(ptr %a)
ret void
f:
ret void
}
; The callsite must execute in order for the attribute to transfer to the parent.
; The volatile load can't trap, so we can guarantee that we'll get to the call.
define i8 @parent6(ptr %a, ptr %b) {
; FNATTRS-LABEL: define i8 @parent6
; FNATTRS-SAME: (ptr nonnull [[A:%.*]], ptr [[B:%.*]]) {
; FNATTRS-NEXT: [[C:%.*]] = load volatile i8, ptr [[B]], align 1
; FNATTRS-NEXT: call void @use1nonnull(ptr [[A]])
; FNATTRS-NEXT: ret i8 [[C]]
;
; ATTRIBUTOR-LABEL: define i8 @parent6
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr nofree [[B:%.*]]) {
; ATTRIBUTOR-NEXT: [[C:%.*]] = load volatile i8, ptr [[B]], align 1
; ATTRIBUTOR-NEXT: call void @use1nonnull(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i8 [[C]]
;
%c = load volatile i8, ptr %b
call void @use1nonnull(ptr %a)
ret i8 %c
}
; The nonnull callsite is guaranteed to execute, so the argument must be nonnull throughout the parent.
define i8 @parent7(ptr %a) {
; FNATTRS-LABEL: define i8 @parent7
; FNATTRS-SAME: (ptr nonnull [[A:%.*]]) {
; FNATTRS-NEXT: [[RET:%.*]] = call i8 @use1safecall(ptr [[A]])
; FNATTRS-NEXT: call void @use1nonnull(ptr [[A]])
; FNATTRS-NEXT: ret i8 [[RET]]
;
; ATTRIBUTOR-LABEL: define i8 @parent7
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]]) {
; ATTRIBUTOR-NEXT: [[RET:%.*]] = call i8 @use1safecall(ptr nonnull [[A]]) #[[ATTR16]]
; ATTRIBUTOR-NEXT: call void @use1nonnull(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i8 [[RET]]
;
%ret = call i8 @use1safecall(ptr %a)
call void @use1nonnull(ptr %a)
ret i8 %ret
}
; Make sure that an invoke works similarly to a call.
declare i32 @esfp(...)
define i1 @parent8(ptr %a, ptr %bogus1, ptr %b) personality ptr @esfp{
; FNATTRS-LABEL: define i1 @parent8
; FNATTRS-SAME: (ptr nonnull [[A:%.*]], ptr nocapture readnone [[BOGUS1:%.*]], ptr nonnull [[B:%.*]]) #[[ATTR7]] personality ptr @esfp {
; FNATTRS-NEXT: entry:
; FNATTRS-NEXT: invoke void @use2nonnull(ptr [[A]], ptr [[B]])
; FNATTRS-NEXT: to label [[CONT:%.*]] unwind label [[EXC:%.*]]
; FNATTRS: cont:
; FNATTRS-NEXT: [[NULL_CHECK:%.*]] = icmp eq ptr [[B]], null
; FNATTRS-NEXT: ret i1 [[NULL_CHECK]]
; FNATTRS: exc:
; FNATTRS-NEXT: [[LP:%.*]] = landingpad { ptr, i32 }
; FNATTRS-NEXT: filter [0 x ptr] zeroinitializer
; FNATTRS-NEXT: unreachable
;
; ATTRIBUTOR-LABEL: define i1 @parent8
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], ptr nocapture nofree readnone [[BOGUS1:%.*]], ptr nonnull [[B:%.*]]) #[[ATTR8]] personality ptr @esfp {
; ATTRIBUTOR-NEXT: entry:
; ATTRIBUTOR-NEXT: invoke void @use2nonnull(ptr nonnull [[A]], ptr nonnull [[B]])
; ATTRIBUTOR-NEXT: to label [[CONT:%.*]] unwind label [[EXC:%.*]]
; ATTRIBUTOR: cont:
; ATTRIBUTOR-NEXT: [[NULL_CHECK:%.*]] = icmp eq ptr [[B]], null
; ATTRIBUTOR-NEXT: ret i1 [[NULL_CHECK]]
; ATTRIBUTOR: exc:
; ATTRIBUTOR-NEXT: [[LP:%.*]] = landingpad { ptr, i32 }
; ATTRIBUTOR-NEXT: filter [0 x ptr] zeroinitializer
; ATTRIBUTOR-NEXT: unreachable
;
entry:
invoke void @use2nonnull(ptr %a, ptr %b)
to label %cont unwind label %exc
cont:
%null_check = icmp eq ptr %b, null
ret i1 %null_check
exc:
%lp = landingpad { ptr, i32 }
filter [0 x ptr] zeroinitializer
unreachable
}
define ptr @gep1(ptr %p) {
; FNATTRS-LABEL: define nonnull ptr @gep1
; FNATTRS-SAME: (ptr readnone [[P:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 1
; FNATTRS-NEXT: ret ptr [[Q]]
;
; ATTRIBUTOR-LABEL: define nonnull ptr @gep1
; ATTRIBUTOR-SAME: (ptr nofree readnone [[P:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 1
; ATTRIBUTOR-NEXT: ret ptr [[Q]]
;
%q = getelementptr inbounds i32, ptr %p, i32 1
ret ptr %q
}
define ptr @gep1_no_null_opt(ptr %p) #0 {
; Should't be able to derive nonnull based on gep.
; FNATTRS-LABEL: define ptr @gep1_no_null_opt
; FNATTRS-SAME: (ptr readnone [[P:%.*]]) #[[ATTR8:[0-9]+]] {
; FNATTRS-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 1
; FNATTRS-NEXT: ret ptr [[Q]]
;
; ATTRIBUTOR-LABEL: define ptr @gep1_no_null_opt
; ATTRIBUTOR-SAME: (ptr nofree readnone [[P:%.*]]) #[[ATTR9:[0-9]+]] {
; ATTRIBUTOR-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr [[P]], i32 1
; ATTRIBUTOR-NEXT: ret ptr [[Q]]
;
%q = getelementptr inbounds i32, ptr %p, i32 1
ret ptr %q
}
define ptr addrspace(3) @gep2(ptr addrspace(3) %p) {
; FNATTRS-LABEL: define ptr addrspace(3) @gep2
; FNATTRS-SAME: (ptr addrspace(3) readnone [[P:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr addrspace(3) [[P]], i32 1
; FNATTRS-NEXT: ret ptr addrspace(3) [[Q]]
;
; ATTRIBUTOR-LABEL: define ptr addrspace(3) @gep2
; ATTRIBUTOR-SAME: (ptr addrspace(3) nofree readnone [[P:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: [[Q:%.*]] = getelementptr inbounds i32, ptr addrspace(3) [[P]], i32 1
; ATTRIBUTOR-NEXT: ret ptr addrspace(3) [[Q]]
;
%q = getelementptr inbounds i32, ptr addrspace(3) %p, i32 1
ret ptr addrspace(3) %q
}
; FIXME: We should propagate dereferenceable here but *not* nonnull
define ptr addrspace(3) @as(ptr addrspace(3) dereferenceable(4) %p) {
; FNATTRS-LABEL: define ptr addrspace(3) @as
; FNATTRS-SAME: (ptr addrspace(3) readnone returned dereferenceable(4) [[P:%.*]]) #[[ATTR0]] {
; FNATTRS-NEXT: ret ptr addrspace(3) [[P]]
;
; ATTRIBUTOR-LABEL: define ptr addrspace(3) @as
; ATTRIBUTOR-SAME: (ptr addrspace(3) nofree readnone dereferenceable(4) [[P:%.*]]) #[[ATTR0]] {
; ATTRIBUTOR-NEXT: ret ptr addrspace(3) [[P]]
;
ret ptr addrspace(3) %p
}
define internal ptr @g2() {
; FNATTRS-LABEL: define internal nonnull ptr @g2
; FNATTRS-SAME: () #[[ATTR0]] {
; FNATTRS-NEXT: ret ptr inttoptr (i64 4 to ptr)
;
; ATTRIBUTOR-LABEL: define internal ptr @g2
; ATTRIBUTOR-SAME: () #[[ATTR10:[0-9]+]] {
; ATTRIBUTOR-NEXT: ret ptr inttoptr (i64 4 to ptr)
;
ret ptr inttoptr (i64 4 to ptr)
}
define ptr @g1() {
; FNATTRS-LABEL: define nonnull ptr @g1
; FNATTRS-SAME: () #[[ATTR0]] {
; FNATTRS-NEXT: [[C:%.*]] = call ptr @g2()
; FNATTRS-NEXT: ret ptr [[C]]
;
; ATTRIBUTOR-LABEL: define ptr @g1
; ATTRIBUTOR-SAME: () #[[ATTR0]] {
; ATTRIBUTOR-NEXT: [[C:%.*]] = call ptr @g2() #[[ATTR10]]
; ATTRIBUTOR-NEXT: ret ptr [[C]]
;
%c = call ptr @g2()
ret ptr %c
}
declare void @use_i32_ptr(ptr) readnone nounwind
define internal void @called_by_weak(ptr %a) {
; FNATTRS-LABEL: define internal void @called_by_weak
; FNATTRS-SAME: (ptr nocapture readnone [[A:%.*]]) #[[ATTR1]] {
; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define internal void @called_by_weak
; ATTRIBUTOR-SAME: (ptr nocapture readnone [[A:%.*]]) #[[ATTR11:[0-9]+]] {
; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use_i32_ptr(ptr %a)
ret void
}
; Check we do not annotate the function interface of this weak function.
define weak_odr void @weak_caller(ptr nonnull %a) {
; FNATTRS-LABEL: define weak_odr void @weak_caller
; FNATTRS-SAME: (ptr nonnull [[A:%.*]]) {
; FNATTRS-NEXT: call void @called_by_weak(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define weak_odr void @weak_caller
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]]) {
; ATTRIBUTOR-NEXT: call void @called_by_weak(ptr nocapture nonnull readnone [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @called_by_weak(ptr %a)
ret void
}
; Expect nonnull
define internal void @control(ptr dereferenceable(4) %a) {
; FNATTRS-LABEL: define internal void @control
; FNATTRS-SAME: (ptr nocapture readnone dereferenceable(4) [[A:%.*]]) #[[ATTR1]] {
; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define internal void @control
; ATTRIBUTOR-SAME: (ptr nocapture readnone dereferenceable(4) [[A:%.*]]) #[[ATTR11]] {
; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use_i32_ptr(ptr %a)
ret void
}
; Avoid nonnull as we do not touch naked functions
define internal void @naked(ptr dereferenceable(4) %a) naked {
; FNATTRS-LABEL: define internal void @naked
; FNATTRS-SAME: (ptr dereferenceable(4) [[A:%.*]]) #[[ATTR10:[0-9]+]] {
; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define internal void @naked
; ATTRIBUTOR-SAME: (ptr dereferenceable(4) [[A:%.*]]) #[[ATTR12:[0-9]+]] {
; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use_i32_ptr(ptr %a)
ret void
}
; Avoid nonnull as we do not touch optnone
define internal void @optnone(ptr dereferenceable(4) %a) optnone noinline {
; FNATTRS-LABEL: define internal void @optnone
; FNATTRS-SAME: (ptr dereferenceable(4) [[A:%.*]]) #[[ATTR11:[0-9]+]] {
; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define internal void @optnone
; ATTRIBUTOR-SAME: (ptr dereferenceable(4) [[A:%.*]]) #[[ATTR13:[0-9]+]] {
; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @use_i32_ptr(ptr %a)
ret void
}
define void @make_live(ptr nonnull dereferenceable(8) %a) {
; FNATTRS-LABEL: define void @make_live
; FNATTRS-SAME: (ptr nonnull dereferenceable(8) [[A:%.*]]) {
; FNATTRS-NEXT: call void @naked(ptr nonnull align 16 dereferenceable(8) [[A]])
; FNATTRS-NEXT: call void @control(ptr nonnull align 16 dereferenceable(8) [[A]])
; FNATTRS-NEXT: call void @optnone(ptr nonnull align 16 dereferenceable(8) [[A]])
; FNATTRS-NEXT: ret void
;
; ATTRIBUTOR-LABEL: define void @make_live
; ATTRIBUTOR-SAME: (ptr nonnull dereferenceable(8) [[A:%.*]]) {
; ATTRIBUTOR-NEXT: call void @naked(ptr nonnull align 16 dereferenceable(8) [[A]])
; ATTRIBUTOR-NEXT: call void @control(ptr nocapture nonnull readnone align 16 dereferenceable(8) [[A]])
; ATTRIBUTOR-NEXT: call void @optnone(ptr nonnull align 16 dereferenceable(8) [[A]])
; ATTRIBUTOR-NEXT: ret void
;
call void @naked(ptr nonnull dereferenceable(8) align 16 %a)
call void @control(ptr nonnull dereferenceable(8) align 16 %a)
call void @optnone(ptr nonnull dereferenceable(8) align 16 %a)
ret void
}
;int f(int *u, int n){
; for(int i = 0;i<n;i++){
; h(u);
; }
; return g(nonnull u);
;}
declare void @h(ptr) willreturn nounwind
declare i32 @g(ptr) willreturn nounwind
define i32 @nonnull_exec_ctx_1(ptr %a, i32 %b) {
; FNATTRS-LABEL: define i32 @nonnull_exec_ctx_1
; FNATTRS-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7]] {
; FNATTRS-NEXT: en:
; FNATTRS-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; FNATTRS-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; FNATTRS: ex:
; FNATTRS-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; FNATTRS-NEXT: ret i32 [[TMP5]]
; FNATTRS: hd:
; FNATTRS-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD]] ], [ 0, [[EN:%.*]] ]
; FNATTRS-NEXT: tail call void @h(ptr [[A]])
; FNATTRS-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; FNATTRS-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; FNATTRS-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
; ATTRIBUTOR-LABEL: define i32 @nonnull_exec_ctx_1
; ATTRIBUTOR-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR8]] {
; ATTRIBUTOR-NEXT: en:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; ATTRIBUTOR-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; ATTRIBUTOR: ex:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i32 [[TMP5]]
; ATTRIBUTOR: hd:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD]] ], [ 0, [[EN:%.*]] ]
; ATTRIBUTOR-NEXT: tail call void @h(ptr [[A]])
; ATTRIBUTOR-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; ATTRIBUTOR-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; ATTRIBUTOR-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
en:
%tmp3 = icmp eq i32 %b, 0
br i1 %tmp3, label %ex, label %hd
ex:
%tmp5 = tail call i32 @g(ptr nonnull %a)
ret i32 %tmp5
hd:
%tmp7 = phi i32 [ %tmp8, %hd ], [ 0, %en ]
tail call void @h(ptr %a)
%tmp8 = add nuw i32 %tmp7, 1
%tmp9 = icmp eq i32 %tmp8, %b
br i1 %tmp9, label %ex, label %hd
}
define i32 @nonnull_exec_ctx_1b(ptr %a, i32 %b) {
; FNATTRS-LABEL: define i32 @nonnull_exec_ctx_1b
; FNATTRS-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7]] {
; FNATTRS-NEXT: en:
; FNATTRS-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; FNATTRS-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; FNATTRS: ex:
; FNATTRS-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; FNATTRS-NEXT: ret i32 [[TMP5]]
; FNATTRS: hd:
; FNATTRS-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD2:%.*]] ], [ 0, [[EN:%.*]] ]
; FNATTRS-NEXT: tail call void @h(ptr [[A]])
; FNATTRS-NEXT: br label [[HD2]]
; FNATTRS: hd2:
; FNATTRS-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; FNATTRS-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; FNATTRS-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
; ATTRIBUTOR-LABEL: define i32 @nonnull_exec_ctx_1b
; ATTRIBUTOR-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR8]] {
; ATTRIBUTOR-NEXT: en:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; ATTRIBUTOR-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; ATTRIBUTOR: ex:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i32 [[TMP5]]
; ATTRIBUTOR: hd:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD2:%.*]] ], [ 0, [[EN:%.*]] ]
; ATTRIBUTOR-NEXT: tail call void @h(ptr [[A]])
; ATTRIBUTOR-NEXT: br label [[HD2]]
; ATTRIBUTOR: hd2:
; ATTRIBUTOR-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; ATTRIBUTOR-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; ATTRIBUTOR-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
en:
%tmp3 = icmp eq i32 %b, 0
br i1 %tmp3, label %ex, label %hd
ex:
%tmp5 = tail call i32 @g(ptr nonnull %a)
ret i32 %tmp5
hd:
%tmp7 = phi i32 [ %tmp8, %hd2 ], [ 0, %en ]
tail call void @h(ptr %a)
br label %hd2
hd2:
%tmp8 = add nuw i32 %tmp7, 1
%tmp9 = icmp eq i32 %tmp8, %b
br i1 %tmp9, label %ex, label %hd
}
define i32 @nonnull_exec_ctx_2(ptr %a, i32 %b) willreturn nounwind {
; FNATTRS-LABEL: define i32 @nonnull_exec_ctx_2
; FNATTRS-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR6]] {
; FNATTRS-NEXT: en:
; FNATTRS-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; FNATTRS-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; FNATTRS: ex:
; FNATTRS-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; FNATTRS-NEXT: ret i32 [[TMP5]]
; FNATTRS: hd:
; FNATTRS-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD]] ], [ 0, [[EN:%.*]] ]
; FNATTRS-NEXT: tail call void @h(ptr [[A]])
; FNATTRS-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; FNATTRS-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; FNATTRS-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
; ATTRIBUTOR-LABEL: define i32 @nonnull_exec_ctx_2
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7]] {
; ATTRIBUTOR-NEXT: en:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; ATTRIBUTOR-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; ATTRIBUTOR: ex:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i32 [[TMP5]]
; ATTRIBUTOR: hd:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD]] ], [ 0, [[EN:%.*]] ]
; ATTRIBUTOR-NEXT: tail call void @h(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; ATTRIBUTOR-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; ATTRIBUTOR-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
en:
%tmp3 = icmp eq i32 %b, 0
br i1 %tmp3, label %ex, label %hd
ex:
%tmp5 = tail call i32 @g(ptr nonnull %a)
ret i32 %tmp5
hd:
%tmp7 = phi i32 [ %tmp8, %hd ], [ 0, %en ]
tail call void @h(ptr %a)
%tmp8 = add nuw i32 %tmp7, 1
%tmp9 = icmp eq i32 %tmp8, %b
br i1 %tmp9, label %ex, label %hd
}
define i32 @nonnull_exec_ctx_2b(ptr %a, i32 %b) willreturn nounwind {
; FNATTRS-LABEL: define i32 @nonnull_exec_ctx_2b
; FNATTRS-SAME: (ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR6]] {
; FNATTRS-NEXT: en:
; FNATTRS-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; FNATTRS-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; FNATTRS: ex:
; FNATTRS-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; FNATTRS-NEXT: ret i32 [[TMP5]]
; FNATTRS: hd:
; FNATTRS-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD2:%.*]] ], [ 0, [[EN:%.*]] ]
; FNATTRS-NEXT: tail call void @h(ptr [[A]])
; FNATTRS-NEXT: br label [[HD2]]
; FNATTRS: hd2:
; FNATTRS-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; FNATTRS-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; FNATTRS-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
; ATTRIBUTOR-LABEL: define i32 @nonnull_exec_ctx_2b
; ATTRIBUTOR-SAME: (ptr nonnull [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7]] {
; ATTRIBUTOR-NEXT: en:
; ATTRIBUTOR-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0
; ATTRIBUTOR-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]]
; ATTRIBUTOR: ex:
; ATTRIBUTOR-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: ret i32 [[TMP5]]
; ATTRIBUTOR: hd:
; ATTRIBUTOR-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD2:%.*]] ], [ 0, [[EN:%.*]] ]
; ATTRIBUTOR-NEXT: tail call void @h(ptr nonnull [[A]])
; ATTRIBUTOR-NEXT: br label [[HD2]]
; ATTRIBUTOR: hd2:
; ATTRIBUTOR-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1
; ATTRIBUTOR-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]]
; ATTRIBUTOR-NEXT: br i1 [[TMP9]], label [[EX]], label [[HD]]
;
en:
%tmp3 = icmp eq i32 %b, 0
br i1 %tmp3, label %ex, label %hd
ex:
%tmp5 = tail call i32 @g(ptr nonnull %a)
ret i32 %tmp5
hd:
%tmp7 = phi i32 [ %tmp8, %hd2 ], [ 0, %en ]
tail call void @h(ptr %a)
br label %hd2
hd2:
%tmp8 = add nuw i32 %tmp7, 1
%tmp9 = icmp eq i32 %tmp8, %b
br i1 %tmp9, label %ex, label %hd
}
; Original from PR43833
declare void @sink(ptr)
; FIXME: the sink argument should be marked nonnull as in @PR43833_simple.
define void @PR43833(ptr %0, i32 %1) {
; COMMON-LABEL: define void @PR43833
; COMMON-SAME: (ptr [[TMP0:%.*]], i32 [[TMP1:%.*]]) {
; COMMON-NEXT: [[TMP3:%.*]] = icmp sgt i32 [[TMP1]], 1
; COMMON-NEXT: br i1 [[TMP3]], label [[TMP4:%.*]], label [[TMP7:%.*]]
; COMMON: 4:
; COMMON-NEXT: [[TMP5:%.*]] = zext i32 [[TMP1]] to i64
; COMMON-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i64 [[TMP5]]
; COMMON-NEXT: br label [[TMP8:%.*]]
; COMMON: 7:
; COMMON-NEXT: ret void
; COMMON: 8:
; COMMON-NEXT: [[TMP9:%.*]] = phi i32 [ 1, [[TMP4]] ], [ [[TMP10:%.*]], [[TMP8]] ]
; COMMON-NEXT: tail call void @sink(ptr [[TMP6]])
; COMMON-NEXT: [[TMP10]] = add nuw nsw i32 [[TMP9]], 1
; COMMON-NEXT: [[TMP11:%.*]] = icmp eq i32 [[TMP10]], [[TMP1]]
; COMMON-NEXT: br i1 [[TMP11]], label [[TMP7]], label [[TMP8]]
;
%3 = icmp sgt i32 %1, 1
br i1 %3, label %4, label %7
4: ; preds = %2
%5 = zext i32 %1 to i64
%6 = getelementptr inbounds i32, ptr %0, i64 %5
br label %8
7: ; preds = %8, %2
ret void
8: ; preds = %8, %4
%9 = phi i32 [ 1, %4 ], [ %10, %8 ]
tail call void @sink(ptr %6)
%10 = add nuw nsw i32 %9, 1
%11 = icmp eq i32 %10, %1
br i1 %11, label %7, label %8
}
; Adjusted from PR43833
define void @PR43833_simple(ptr %0, i32 %1) {
; COMMON-LABEL: define void @PR43833_simple
; COMMON-SAME: (ptr [[TMP0:%.*]], i32 [[TMP1:%.*]]) {
; COMMON-NEXT: [[TMP3:%.*]] = icmp ne i32 [[TMP1]], 0
; COMMON-NEXT: br i1 [[TMP3]], label [[TMP4:%.*]], label [[TMP7:%.*]]
; COMMON: 4:
; COMMON-NEXT: [[TMP5:%.*]] = zext i32 [[TMP1]] to i64
; COMMON-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[TMP0]], i64 [[TMP5]]
; COMMON-NEXT: br label [[TMP8:%.*]]
; COMMON: 7:
; COMMON-NEXT: ret void
; COMMON: 8:
; COMMON-NEXT: [[TMP9:%.*]] = phi i32 [ 1, [[TMP4]] ], [ [[TMP10:%.*]], [[TMP8]] ]
; COMMON-NEXT: tail call void @sink(ptr [[TMP6]])
; COMMON-NEXT: [[TMP10]] = add nuw nsw i32 [[TMP9]], 1
; COMMON-NEXT: [[TMP11:%.*]] = icmp eq i32 [[TMP10]], [[TMP1]]
; COMMON-NEXT: br i1 [[TMP11]], label [[TMP7]], label [[TMP8]]
;
%3 = icmp ne i32 %1, 0
br i1 %3, label %4, label %7
4: ; preds = %2
%5 = zext i32 %1 to i64
%6 = getelementptr inbounds i32, ptr %0, i64 %5
br label %8
7: ; preds = %8, %2
ret void
8: ; preds = %8, %4
%9 = phi i32 [ 1, %4 ], [ %10, %8 ]
tail call void @sink(ptr %6)
%10 = add nuw nsw i32 %9, 1
%11 = icmp eq i32 %10, %1
br i1 %11, label %7, label %8
}
attributes #0 = { null_pointer_is_valid }
attributes #1 = { nounwind willreturn}