| ; 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 captures(ret: address, provenance) [[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) { |
| ; FNATTRS-LABEL: define noundef ptr @scc_binder( |
| ; FNATTRS-SAME: i1 [[C:%.*]]) { |
| ; FNATTRS-NEXT: br i1 [[C]], label [[REC:%.*]], label [[END:%.*]] |
| ; FNATTRS: rec: |
| ; FNATTRS-NEXT: [[TMP1:%.*]] = call ptr @test3(i1 [[C]]) |
| ; FNATTRS-NEXT: br label [[END]] |
| ; FNATTRS: end: |
| ; FNATTRS-NEXT: ret ptr null |
| ; |
| ; ATTRIBUTOR-LABEL: define ptr @scc_binder( |
| ; ATTRIBUTOR-SAME: i1 [[C:%.*]]) { |
| ; ATTRIBUTOR-NEXT: br i1 [[C]], label [[REC:%.*]], label [[END:%.*]] |
| ; ATTRIBUTOR: rec: |
| ; ATTRIBUTOR-NEXT: [[TMP1:%.*]] = call ptr @test3(i1 [[C]]) |
| ; ATTRIBUTOR-NEXT: br label [[END]] |
| ; ATTRIBUTOR: end: |
| ; ATTRIBUTOR-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 noundef 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 noundef 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(i1 %arg) { |
| ; COMMON-LABEL: define nonnull ptr @test6a( |
| ; COMMON-SAME: i1 [[ARG:%.*]]) { |
| ; 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 [[ARG]], 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 %arg, 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 captures(ret: address, provenance) [[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 captures(ret: address, provenance) [[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 captures(ret: address, provenance) [[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 captures(ret: address, provenance) [[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]]) #[[ATTR13:[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 captures(address_is_null, ret: address, provenance) [[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 nofree nonnull readnone captures(none) [[NONNULLPTR]], ptr nofree nonnull readnone captures(none) [[NONNULLPTR]], ptr nofree readnone captures(none) [[MAYBENULLPTR]]) |
| ; ATTRIBUTOR-NEXT: tail call void @test13(ptr nofree nonnull readnone captures(none) [[NONNULLPTR]], ptr nofree readnone captures(none) [[MAYBENULLPTR]], ptr nofree nonnull readnone captures(none) [[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 readnone captures(none) [[A:%.*]], ptr readnone captures(none) [[B:%.*]], ptr readnone captures(none) [[C:%.*]]) #[[ATTR0]] { |
| ; FNATTRS-NEXT: ret void |
| ; |
| ; ATTRIBUTOR-LABEL: define internal void @test13( |
| ; ATTRIBUTOR-SAME: ptr nofree nonnull readnone captures(none) [[A:%.*]], ptr nofree readnone captures(none) [[B:%.*]], ptr nofree readnone captures(none) [[C:%.*]]) #[[ATTR0]] { |
| ; 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 captures(address_is_null) [[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:%.*]]) #[[ATTR4:[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 nofree nonnull readonly [[TMP5]]) #[[ATTR14:[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 nofree nonnull readonly [[ARG]]) #[[ATTR14]] |
| ; 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 readonly captures(address_is_null) [[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 nofree nonnull readonly [[ARG:%.*]]) #[[ATTR4]] { |
| ; ATTRIBUTOR-NEXT: bb: |
| ; ATTRIBUTOR-NEXT: [[TMP:%.*]] = tail call ptr @f1(ptr nofree nonnull readonly [[ARG]]) #[[ATTR14]] |
| ; 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 readonly captures(address_is_null) [[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:%.*]]) #[[ATTR4]] { |
| ; ATTRIBUTOR-NEXT: bb: |
| ; ATTRIBUTOR-NEXT: [[TMP:%.*]] = call ptr @f1(ptr nofree readonly [[ARG]]) #[[ATTR14]] |
| ; 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:%.*]]) #[[ATTR6:[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]]) #[[ATTR15:[0-9]+]] |
| ; ATTRIBUTOR-NEXT: ret void |
| ; ATTRIBUTOR: if.else: |
| ; ATTRIBUTOR-NEXT: tail call void @fun2(ptr nonnull [[A]], ptr [[B]]) #[[ATTR15]] |
| ; 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:%.*]]) #[[ATTR6]] { |
| ; 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() #[[ATTR15]] |
| ; ATTRIBUTOR-NEXT: br label [[CONT:%.*]] |
| ; ATTRIBUTOR: if.else: |
| ; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR15]] |
| ; ATTRIBUTOR-NEXT: br label [[CONT]] |
| ; ATTRIBUTOR: cont: |
| ; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[A]]) #[[ATTR15]] |
| ; 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:%.*]]) #[[ATTR6]] { |
| ; 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() #[[ATTR15]] |
| ; ATTRIBUTOR-NEXT: br label [[CONT:%.*]] |
| ; ATTRIBUTOR: if.else: |
| ; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR15]] |
| ; 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]]) #[[ATTR15]] |
| ; ATTRIBUTOR-NEXT: br label [[CONT2:%.*]] |
| ; ATTRIBUTOR: cont.else: |
| ; ATTRIBUTOR-NEXT: tail call void @fun0() #[[ATTR15]] |
| ; ATTRIBUTOR-NEXT: br label [[CONT2]] |
| ; ATTRIBUTOR: cont2: |
| ; ATTRIBUTOR-NEXT: tail call void @fun1(ptr nonnull [[A]]) #[[ATTR15]] |
| ; 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:%.*]]) #[[ATTR7:[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]]) #[[ATTR15]] |
| ; 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 noundef i1 @parent8( |
| ; FNATTRS-SAME: ptr nonnull [[A:%.*]], ptr readnone captures(none) [[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 nofree readnone captures(none) [[BOGUS1:%.*]], ptr nonnull [[B:%.*]]) #[[ATTR7]] 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 captures(ret: address, provenance) [[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 captures(ret: address, provenance) [[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:%.*]]) #[[ATTR8:[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 captures(ret: address, provenance) [[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 noundef ptr addrspace(3) @as( |
| ; FNATTRS-SAME: ptr addrspace(3) readnone returned captures(ret: address, provenance) 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 noundef nonnull ptr @g2( |
| ; FNATTRS-SAME: ) #[[ATTR0]] { |
| ; FNATTRS-NEXT: ret ptr inttoptr (i64 4 to ptr) |
| ; |
| ; ATTRIBUTOR-LABEL: define internal nonnull ptr @g2( |
| ; ATTRIBUTOR-SAME: ) #[[ATTR0]] { |
| ; ATTRIBUTOR-NEXT: ret ptr inttoptr (i64 4 to ptr) |
| ; |
| ret ptr inttoptr (i64 4 to ptr) |
| } |
| |
| define ptr @g1() { |
| ; FNATTRS-LABEL: define noundef 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() #[[ATTR16:[0-9]+]] |
| ; ATTRIBUTOR-NEXT: ret ptr [[C]] |
| ; |
| %c = call ptr @g2() |
| ret ptr %c |
| } |
| |
| declare void @use_i32_ptr(ptr) readnone nounwind willreturn |
| define internal void @called_by_weak(ptr %a) { |
| ; FNATTRS-LABEL: define internal void @called_by_weak( |
| ; FNATTRS-SAME: ptr readnone captures(none) [[A:%.*]]) #[[ATTR10:[0-9]+]] { |
| ; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]]) |
| ; FNATTRS-NEXT: ret void |
| ; |
| ; ATTRIBUTOR-LABEL: define internal void @called_by_weak( |
| ; ATTRIBUTOR-SAME: ptr nonnull readnone captures(none) [[A:%.*]]) #[[ATTR10:[0-9]+]] { |
| ; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr nonnull [[A]]) #[[ATTR17:[0-9]+]] |
| ; 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 nonnull readnone captures(none) [[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 readnone captures(none) dereferenceable(4) [[A:%.*]]) #[[ATTR10]] { |
| ; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]]) |
| ; FNATTRS-NEXT: ret void |
| ; |
| ; ATTRIBUTOR-LABEL: define internal void @control( |
| ; ATTRIBUTOR-SAME: ptr nonnull readnone captures(none) dereferenceable(4) [[A:%.*]]) #[[ATTR10]] { |
| ; ATTRIBUTOR-NEXT: call void @use_i32_ptr(ptr [[A]]) #[[ATTR17]] |
| ; 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:%.*]]) #[[ATTR11:[0-9]+]] { |
| ; FNATTRS-NEXT: ret void |
| ; |
| ; ATTRIBUTOR-LABEL: define internal void @naked( |
| ; ATTRIBUTOR-SAME: ptr nonnull dereferenceable(4) [[A:%.*]]) #[[ATTR11:[0-9]+]] { |
| ; ATTRIBUTOR-NEXT: ret void |
| ; |
| 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:%.*]]) #[[ATTR12:[0-9]+]] { |
| ; FNATTRS-NEXT: call void @use_i32_ptr(ptr [[A]]) |
| ; FNATTRS-NEXT: ret void |
| ; |
| ; ATTRIBUTOR-LABEL: define internal void @optnone( |
| ; ATTRIBUTOR-SAME: ptr nonnull 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 |
| } |
| 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 nonnull readnone align 16 captures(none) 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) { |
| ; COMMON-LABEL: define i32 @nonnull_exec_ctx_1( |
| ; COMMON-SAME: ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7:[0-9]+]] { |
| ; COMMON-NEXT: en: |
| ; COMMON-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0 |
| ; COMMON-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]] |
| ; COMMON: ex: |
| ; COMMON-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]]) |
| ; COMMON-NEXT: ret i32 [[TMP5]] |
| ; COMMON: hd: |
| ; COMMON-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD]] ], [ 0, [[EN:%.*]] ] |
| ; COMMON-NEXT: tail call void @h(ptr [[A]]) |
| ; COMMON-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1 |
| ; COMMON-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]] |
| ; COMMON-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) { |
| ; COMMON-LABEL: define i32 @nonnull_exec_ctx_1b( |
| ; COMMON-SAME: ptr [[A:%.*]], i32 [[B:%.*]]) #[[ATTR7]] { |
| ; COMMON-NEXT: en: |
| ; COMMON-NEXT: [[TMP3:%.*]] = icmp eq i32 [[B]], 0 |
| ; COMMON-NEXT: br i1 [[TMP3]], label [[EX:%.*]], label [[HD:%.*]] |
| ; COMMON: ex: |
| ; COMMON-NEXT: [[TMP5:%.*]] = tail call i32 @g(ptr nonnull [[A]]) |
| ; COMMON-NEXT: ret i32 [[TMP5]] |
| ; COMMON: hd: |
| ; COMMON-NEXT: [[TMP7:%.*]] = phi i32 [ [[TMP8:%.*]], [[HD2:%.*]] ], [ 0, [[EN:%.*]] ] |
| ; COMMON-NEXT: tail call void @h(ptr [[A]]) |
| ; COMMON-NEXT: br label [[HD2]] |
| ; COMMON: hd2: |
| ; COMMON-NEXT: [[TMP8]] = add nuw i32 [[TMP7]], 1 |
| ; COMMON-NEXT: [[TMP9:%.*]] = icmp eq i32 [[TMP8]], [[B]] |
| ; COMMON-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:%.*]]) #[[ATTR6]] { |
| ; 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:%.*]]) #[[ATTR6]] { |
| ; 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 |
| } |
| |
| define ptr @pr91177_non_inbounds_gep(ptr nonnull %arg) { |
| ; FNATTRS-LABEL: define ptr @pr91177_non_inbounds_gep( |
| ; FNATTRS-SAME: ptr nonnull readnone captures(ret: address, provenance) [[ARG:%.*]]) #[[ATTR0]] { |
| ; FNATTRS-NEXT: [[RES:%.*]] = getelementptr i8, ptr [[ARG]], i64 -8 |
| ; FNATTRS-NEXT: ret ptr [[RES]] |
| ; |
| ; ATTRIBUTOR-LABEL: define ptr @pr91177_non_inbounds_gep( |
| ; ATTRIBUTOR-SAME: ptr nofree nonnull readnone [[ARG:%.*]]) #[[ATTR0]] { |
| ; ATTRIBUTOR-NEXT: [[RES:%.*]] = getelementptr i8, ptr [[ARG]], i64 -8 |
| ; ATTRIBUTOR-NEXT: ret ptr [[RES]] |
| ; |
| %res = getelementptr i8, ptr %arg, i64 -8 |
| ret ptr %res |
| } |
| |
| attributes #0 = { null_pointer_is_valid } |
| attributes #1 = { nounwind willreturn} |
