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clang-p2996/llvm/test/Transforms/Attributor/noalias.ll
Arthur Eubanks 05392466f0 Reland [IR] Increase max alignment to 4GB 
Currently the max alignment representable is 1GB, see D108661.
Setting the align of an object to 4GB is desirable in some cases to make sure the lower 32 bits are clear which can be used for some optimizations, e.g. https://crbug.com/1016945.

This uses an extra bit in instructions that carry an alignment. We can store 15 bits of "free" information, and with this change some instructions (e.g. AtomicCmpXchgInst) use 14 bits.
We can increase the max alignment representable above 4GB (up to 2^62) since we're only using 33 of the 64 values, but I've just limited it to 4GB for now.

The one place we have to update the bitcode format is for the alloca instruction. It stores its alignment into 5 bits of a 32 bit bitfield. I've added another field which is 8 bits and should be future proof for a while. For backward compatibility, we check if the old field has a value and use that, otherwise use the new field.

Updating clang's max allowed alignment will come in a future patch.

Reviewed By: hans

Differential Revision: https://reviews.llvm.org/D110451
2021-10-06 13:29:23 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals
; RUN: opt -attributor -enable-new-pm=0 -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=7 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_NPM,NOT_CGSCC_OPM,NOT_TUNIT_NPM,IS__TUNIT____,IS________OPM,IS__TUNIT_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-max-iterations-verify -attributor-annotate-decl-cs -attributor-max-iterations=7 -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_CGSCC_OPM,NOT_CGSCC_NPM,NOT_TUNIT_OPM,IS__TUNIT____,IS________NPM,IS__TUNIT_NPM
; TODO: The old pass manager cgscc run is disabled as it causes a crash on windows which is under investigation: http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/25479/steps/test-check-all/logs/FAIL%3A%20LLVM%3A%3Anoalias.ll
; opt -attributor-cgscc -enable-new-pm=0 -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_NPM,IS__CGSCC____,IS________OPM,IS__CGSCC_OPM
; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,NOT_TUNIT_NPM,NOT_TUNIT_OPM,NOT_CGSCC_OPM,IS__CGSCC____,IS________NPM,IS__CGSCC_NPM
; TEST 1 - negative.
; void *G;
; void *foo(){
; void *V = malloc(4);
; G = V;
; return V;
; }
@G = external global i8*
;.
; CHECK: @[[G:[a-zA-Z0-9_$"\\.-]+]] = external global i8*
; CHECK: @[[ALIAS_OF_P:[a-zA-Z0-9_$"\\.-]+]] = external global i32*
;.
define i8* @foo() {
; CHECK-LABEL: define {{[^@]+}}@foo() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: store i8* [[TMP1]], i8** @G, align 8
; CHECK-NEXT: ret i8* [[TMP1]]
;
%1 = tail call noalias i8* @malloc(i64 4)
store i8* %1, i8** @G, align 8
ret i8* %1
}
declare noalias i8* @malloc(i64)
; TEST 2
; call noalias function in return instruction.
define i8* @return_noalias(){
; CHECK-LABEL: define {{[^@]+}}@return_noalias() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: ret i8* [[TMP1]]
;
%1 = tail call noalias i8* @malloc(i64 4)
ret i8* %1
}
define void @nocapture(i8* %a){
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@nocapture
; NOT_CGSCC_NPM-SAME: (i8* nocapture nofree readnone [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@nocapture
; IS__CGSCC____-SAME: (i8* nocapture nofree readnone [[A:%.*]]) #[[ATTR0:[0-9]+]] {
; IS__CGSCC____-NEXT: ret void
;
ret void
}
define i8* @return_noalias_looks_like_capture(){
; CHECK-LABEL: define {{[^@]+}}@return_noalias_looks_like_capture() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: ret i8* [[TMP1]]
;
%1 = tail call noalias i8* @malloc(i64 4)
call void @nocapture(i8* %1)
ret i8* %1
}
define i16* @return_noalias_casted(){
; CHECK-LABEL: define {{[^@]+}}@return_noalias_casted() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: [[C:%.*]] = bitcast i8* [[TMP1]] to i16*
; CHECK-NEXT: ret i16* [[C]]
;
%1 = tail call noalias i8* @malloc(i64 4)
%c = bitcast i8* %1 to i16*
ret i16* %c
}
declare i8* @alias()
; TEST 3
define i8* @call_alias(){
; CHECK-LABEL: define {{[^@]+}}@call_alias() {
; CHECK-NEXT: [[TMP1:%.*]] = tail call i8* @alias()
; CHECK-NEXT: ret i8* [[TMP1]]
;
%1 = tail call i8* @alias()
ret i8* %1
}
; TEST 4
; void *baz();
; void *foo(int a);
;
; void *bar() {
; foo(0);
; return baz();
; }
;
; void *foo(int a) {
; if (a)
; bar();
; return malloc(4);
; }
define i8* @bar() nounwind uwtable {
; CHECK: Function Attrs: nounwind uwtable
; CHECK-LABEL: define {{[^@]+}}@bar
; CHECK-SAME: () #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: [[TMP1:%.*]] = tail call i8* (...) @baz() #[[ATTR2:[0-9]+]]
; CHECK-NEXT: ret i8* [[TMP1]]
;
%1 = tail call i8* (...) @baz()
ret i8* %1
}
define i8* @foo1(i32 %0) nounwind uwtable {
; CHECK: Function Attrs: nounwind uwtable
; CHECK-LABEL: define {{[^@]+}}@foo1
; CHECK-SAME: (i32 [[TMP0:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP0]], 0
; CHECK-NEXT: br i1 [[TMP2]], label [[TMP5:%.*]], label [[TMP3:%.*]]
; CHECK: 3:
; CHECK-NEXT: [[TMP4:%.*]] = tail call i8* (...) @baz() #[[ATTR2]]
; CHECK-NEXT: br label [[TMP5]]
; CHECK: 5:
; CHECK-NEXT: [[TMP6:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: ret i8* [[TMP6]]
;
%2 = icmp eq i32 %0, 0
br i1 %2, label %5, label %3
3: ; preds = %1
%4 = tail call i8* (...) @baz()
br label %5
5: ; preds = %1, %3
%6 = tail call noalias i8* @malloc(i64 4)
ret i8* %6
}
declare i8* @baz(...) nounwind uwtable
; TEST 5
; Returning global pointer. Should not be noalias.
define i8** @getter() {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@getter
; NOT_CGSCC_NPM-SAME: () #[[ATTR0]] {
; NOT_CGSCC_NPM-NEXT: ret i8** @G
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@getter
; IS__CGSCC____-SAME: () #[[ATTR0]] {
; IS__CGSCC____-NEXT: ret i8** @G
;
ret i8** @G
}
; Returning global pointer. Should not be noalias.
define i8** @calle1(){
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@calle1
; NOT_CGSCC_NPM-SAME: () #[[ATTR0]] {
; NOT_CGSCC_NPM-NEXT: ret i8** @G
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@calle1
; IS__CGSCC____-SAME: () #[[ATTR0]] {
; IS__CGSCC____-NEXT: ret i8** @G
;
%1 = call i8** @getter()
ret i8** %1
}
; TEST 6
declare noalias i8* @strdup(i8* nocapture) nounwind
define i8* @test6() nounwind uwtable ssp {
; CHECK: Function Attrs: nounwind ssp uwtable
; CHECK-LABEL: define {{[^@]+}}@test6
; CHECK-SAME: () #[[ATTR3:[0-9]+]] {
; CHECK-NEXT: [[X:%.*]] = alloca [2 x i8], align 1
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [2 x i8], [2 x i8]* [[X]], i64 0, i64 0
; CHECK-NEXT: store i8 97, i8* [[ARRAYIDX]], align 1
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds [2 x i8], [2 x i8]* [[X]], i64 0, i64 1
; CHECK-NEXT: store i8 0, i8* [[ARRAYIDX1]], align 1
; CHECK-NEXT: [[CALL:%.*]] = call noalias i8* @strdup(i8* nocapture noundef nonnull dereferenceable(2) [[ARRAYIDX]]) #[[ATTR2]]
; CHECK-NEXT: ret i8* [[CALL]]
;
%x = alloca [2 x i8], align 1
%arrayidx = getelementptr inbounds [2 x i8], [2 x i8]* %x, i64 0, i64 0
store i8 97, i8* %arrayidx, align 1
%arrayidx1 = getelementptr inbounds [2 x i8], [2 x i8]* %x, i64 0, i64 1
store i8 0, i8* %arrayidx1, align 1
%call = call noalias i8* @strdup(i8* %arrayidx) nounwind
ret i8* %call
}
; TEST 7
define i8* @test7() nounwind {
; CHECK: Function Attrs: nounwind
; CHECK-LABEL: define {{[^@]+}}@test7
; CHECK-SAME: () #[[ATTR2]] {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = call noalias i8* @malloc(i64 noundef 4) #[[ATTR2]]
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i8* [[A]], null
; CHECK-NEXT: br i1 [[TOBOOL]], label [[RETURN:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: store i8 7, i8* [[A]], align 1
; CHECK-NEXT: br label [[RETURN]]
; CHECK: return:
; CHECK-NEXT: [[RETVAL_0:%.*]] = phi i8* [ [[A]], [[IF_END]] ], [ null, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i8* [[RETVAL_0]]
;
entry:
%A = call noalias i8* @malloc(i64 4) nounwind
%tobool = icmp eq i8* %A, null
br i1 %tobool, label %return, label %if.end
if.end:
store i8 7, i8* %A
br label %return
return:
%retval.0 = phi i8* [ %A, %if.end ], [ null, %entry ]
ret i8* %retval.0
}
; TEST 8
define i8* @test8(i32* %0) nounwind uwtable {
; CHECK: Function Attrs: nounwind uwtable
; CHECK-LABEL: define {{[^@]+}}@test8
; CHECK-SAME: (i32* [[TMP0:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[TMP2:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: [[TMP3:%.*]] = icmp ne i32* [[TMP0]], null
; CHECK-NEXT: br i1 [[TMP3]], label [[TMP4:%.*]], label [[TMP5:%.*]]
; CHECK: 4:
; CHECK-NEXT: store i8 10, i8* [[TMP2]], align 1
; CHECK-NEXT: br label [[TMP5]]
; CHECK: 5:
; CHECK-NEXT: ret i8* [[TMP2]]
;
%2 = tail call noalias i8* @malloc(i64 4)
%3 = icmp ne i32* %0, null
br i1 %3, label %4, label %5
4: ; preds = %1
store i8 10, i8* %2
br label %5
5: ; preds = %1, %4
ret i8* %2
}
; TEST 9
; Simple Argument Test
declare void @use_i8(i8* nocapture)
define internal void @test9a(i8* %a, i8* %b) {
; CHECK-LABEL: define {{[^@]+}}@test9a() {
; CHECK-NEXT: call void @use_i8(i8* noalias nocapture noundef align 4294967296 null)
; CHECK-NEXT: ret void
;
call void @use_i8(i8* null)
ret void
}
define internal void @test9b(i8* %a, i8* %b) {
; FIXME: %b should be noalias
; CHECK-LABEL: define {{[^@]+}}@test9b
; CHECK-SAME: (i8* noalias nocapture [[A:%.*]], i8* nocapture [[B:%.*]]) {
; CHECK-NEXT: call void @use_i8(i8* noalias nocapture [[A]])
; CHECK-NEXT: call void @use_i8(i8* nocapture [[B]])
; CHECK-NEXT: ret void
;
call void @use_i8(i8* %a)
call void @use_i8(i8* %b)
ret void
}
define internal void @test9c(i8* %a, i8* %b, i8* %c) {
; CHECK-LABEL: define {{[^@]+}}@test9c
; CHECK-SAME: (i8* noalias nocapture [[A:%.*]], i8* nocapture [[B:%.*]], i8* nocapture [[C:%.*]]) {
; CHECK-NEXT: call void @use_i8(i8* noalias nocapture [[A]])
; CHECK-NEXT: call void @use_i8(i8* nocapture [[B]])
; CHECK-NEXT: call void @use_i8(i8* nocapture [[C]])
; CHECK-NEXT: ret void
;
call void @use_i8(i8* %a)
call void @use_i8(i8* %b)
call void @use_i8(i8* %c)
ret void
}
define void @test9_helper(i8* %a, i8* %b) {
; CHECK-LABEL: define {{[^@]+}}@test9_helper
; CHECK-SAME: (i8* nocapture [[A:%.*]], i8* nocapture [[B:%.*]]) {
; CHECK-NEXT: tail call void @test9a()
; CHECK-NEXT: tail call void @test9a()
; CHECK-NEXT: tail call void @test9b(i8* noalias nocapture [[A]], i8* nocapture [[B]])
; CHECK-NEXT: tail call void @test9b(i8* noalias nocapture [[B]], i8* noalias nocapture [[A]])
; CHECK-NEXT: tail call void @test9c(i8* noalias nocapture [[A]], i8* nocapture [[B]], i8* nocapture [[B]])
; CHECK-NEXT: tail call void @test9c(i8* noalias nocapture [[B]], i8* noalias nocapture [[A]], i8* noalias nocapture [[A]])
; CHECK-NEXT: ret void
;
tail call void @test9a(i8* noalias %a, i8* %b)
tail call void @test9a(i8* noalias %b, i8* noalias %a)
tail call void @test9b(i8* noalias %a, i8* %b)
tail call void @test9b(i8* noalias %b, i8* noalias %a)
tail call void @test9c(i8* noalias %a, i8* %b, i8* %b)
tail call void @test9c(i8* noalias %b, i8* noalias %a, i8* noalias %a)
ret void
}
; TEST 10
; Simple CallSite Test
declare void @test10_helper_1(i8* %a)
define void @test10_helper_2(i8* noalias %a) {
; CHECK-LABEL: define {{[^@]+}}@test10_helper_2
; CHECK-SAME: (i8* noalias [[A:%.*]]) {
; CHECK-NEXT: tail call void @test10_helper_1(i8* [[A]])
; CHECK-NEXT: ret void
;
tail call void @test10_helper_1(i8* %a)
ret void
}
define void @test10(i8* noalias %a) {
; CHECK-LABEL: define {{[^@]+}}@test10
; CHECK-SAME: (i8* noalias [[A:%.*]]) {
; CHECK-NEXT: tail call void @test10_helper_1(i8* [[A]])
; CHECK-NEXT: tail call void @test10_helper_2(i8* noalias [[A]])
; CHECK-NEXT: ret void
;
; FIXME: missing noalias
tail call void @test10_helper_1(i8* %a)
tail call void @test10_helper_2(i8* %a)
ret void
}
; TEST 11
; CallSite Test
declare void @test11_helper(i8* %a, i8 *%b)
define void @test11(i8* noalias %a) {
; CHECK-LABEL: define {{[^@]+}}@test11
; CHECK-SAME: (i8* noalias [[A:%.*]]) {
; CHECK-NEXT: tail call void @test11_helper(i8* [[A]], i8* [[A]])
; CHECK-NEXT: ret void
;
tail call void @test11_helper(i8* %a, i8* %a)
ret void
}
; TEST 12
; CallSite Argument
declare void @use_nocapture(i8* nocapture)
declare void @use(i8*)
define void @test12_1() {
; CHECK-LABEL: define {{[^@]+}}@test12_1() {
; CHECK-NEXT: [[A:%.*]] = alloca i8, align 4
; CHECK-NEXT: [[B:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) [[A]])
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture noundef nonnull align 4 dereferenceable(1) [[A]])
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture [[B]])
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture [[B]])
; CHECK-NEXT: ret void
;
%A = alloca i8, align 4
%B = tail call noalias i8* @malloc(i64 4)
tail call void @use_nocapture(i8* %A)
tail call void @use_nocapture(i8* %A)
tail call void @use_nocapture(i8* %B)
tail call void @use_nocapture(i8* %B)
ret void
}
define void @test12_2(){
; CHECK-LABEL: define {{[^@]+}}@test12_2() {
; CHECK-NEXT: [[A:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture [[A]])
; CHECK-NEXT: tail call void @use_nocapture(i8* noalias nocapture [[A]])
; CHECK-NEXT: tail call void @use(i8* [[A]])
; CHECK-NEXT: tail call void @use_nocapture(i8* nocapture [[A]])
; CHECK-NEXT: ret void
;
; FIXME: This should be @use_nocapture(i8* noalias [[A]])
; FIXME: This should be @use_nocapture(i8* noalias nocapture [[A]])
%A = tail call noalias i8* @malloc(i64 4)
tail call void @use_nocapture(i8* %A)
tail call void @use_nocapture(i8* %A)
tail call void @use(i8* %A)
tail call void @use_nocapture(i8* %A)
ret void
}
declare void @two_args(i8* nocapture , i8* nocapture)
define void @test12_3(){
; CHECK-LABEL: define {{[^@]+}}@test12_3() {
; CHECK-NEXT: [[A:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; CHECK-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[A]])
; CHECK-NEXT: ret void
;
%A = tail call noalias i8* @malloc(i64 4)
tail call void @two_args(i8* %A, i8* %A)
ret void
}
define void @test12_4(){
; IS________OPM-LABEL: define {{[^@]+}}@test12_4() {
; IS________OPM-NEXT: [[A:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[B:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[A_0:%.*]] = getelementptr i8, i8* [[A]], i64 0
; IS________OPM-NEXT: [[A_1:%.*]] = getelementptr i8, i8* [[A]], i64 1
; IS________OPM-NEXT: [[B_0:%.*]] = getelementptr i8, i8* [[B]], i64 0
; IS________OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[B]])
; IS________OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[A_0]])
; IS________OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[A_1]])
; IS________OPM-NEXT: tail call void @two_args(i8* nocapture [[A_0]], i8* nocapture [[B_0]])
; IS________OPM-NEXT: ret void
;
; NOT_TUNIT_OPM-LABEL: define {{[^@]+}}@test12_4() {
; NOT_TUNIT_OPM-NEXT: [[A:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; NOT_TUNIT_OPM-NEXT: [[B:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; NOT_TUNIT_OPM-NEXT: [[A_1:%.*]] = getelementptr i8, i8* [[A]], i64 1
; NOT_TUNIT_OPM-NEXT: tail call void @two_args(i8* noalias nocapture [[A]], i8* noalias nocapture [[B]])
; NOT_TUNIT_OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[A]])
; NOT_TUNIT_OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[A_1]])
; NOT_TUNIT_OPM-NEXT: tail call void @two_args(i8* nocapture [[A]], i8* nocapture [[B]])
; NOT_TUNIT_OPM-NEXT: ret void
;
%A = tail call noalias i8* @malloc(i64 4)
%B = tail call noalias i8* @malloc(i64 4)
%A_0 = getelementptr i8, i8* %A, i64 0
%A_1 = getelementptr i8, i8* %A, i64 1
%B_0 = getelementptr i8, i8* %B, i64 0
tail call void @two_args(i8* %A, i8* %B)
tail call void @two_args(i8* %A, i8* %A_0)
tail call void @two_args(i8* %A, i8* %A_1)
; FIXME: This should be @two_args(i8* noalias nocapture %A_0, i8* noalias nocapture %B_0)
tail call void @two_args(i8* %A_0, i8* %B_0)
ret void
}
; TEST 13
define void @use_i8_internal(i8* %a) {
; CHECK-LABEL: define {{[^@]+}}@use_i8_internal
; CHECK-SAME: (i8* nocapture [[A:%.*]]) {
; CHECK-NEXT: call void @use_i8(i8* nocapture [[A]])
; CHECK-NEXT: ret void
;
call void @use_i8(i8* %a)
ret void
}
define void @test13_use_noalias(){
; IS________OPM-LABEL: define {{[^@]+}}@test13_use_noalias() {
; IS________OPM-NEXT: [[M1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[C1:%.*]] = bitcast i8* [[M1]] to i16*
; IS________OPM-NEXT: [[C2:%.*]] = bitcast i16* [[C1]] to i8*
; IS________OPM-NEXT: call void @use_i8_internal(i8* noalias nocapture [[C2]])
; IS________OPM-NEXT: ret void
;
; NOT_TUNIT_OPM-LABEL: define {{[^@]+}}@test13_use_noalias() {
; NOT_TUNIT_OPM-NEXT: [[M1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; NOT_TUNIT_OPM-NEXT: call void @use_i8_internal(i8* noalias nocapture [[M1]])
; NOT_TUNIT_OPM-NEXT: ret void
;
; IS__CGSCC_OPM-LABEL: define {{[^@]+}}@test13_use_noalias()
; IS__CGSCC_OPM-NEXT: [[M1:%.*]] = tail call noalias i8* @malloc(i64 4)
; IS__CGSCC_OPM-NEXT: [[C1:%.*]] = bitcast i8* [[M1]] to i16*
; IS__CGSCC_OPM-NEXT: [[C2:%.*]] = bitcast i16* [[C1]] to i8*
; IS__CGSCC_OPM-NEXT: call void @use_i8_internal(i8* noalias [[C2]])
; IS__CGSCC_OPM-NEXT: ret void
%m1 = tail call noalias i8* @malloc(i64 4)
%c1 = bitcast i8* %m1 to i16*
%c2 = bitcast i16* %c1 to i8*
call void @use_i8_internal(i8* %c2)
ret void
}
define void @test13_use_alias(){
; IS________OPM-LABEL: define {{[^@]+}}@test13_use_alias() {
; IS________OPM-NEXT: [[M1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; IS________OPM-NEXT: [[C1:%.*]] = bitcast i8* [[M1]] to i16*
; IS________OPM-NEXT: [[C2A:%.*]] = bitcast i16* [[C1]] to i8*
; IS________OPM-NEXT: [[C2B:%.*]] = bitcast i16* [[C1]] to i8*
; IS________OPM-NEXT: call void @use_i8_internal(i8* nocapture [[C2A]])
; IS________OPM-NEXT: call void @use_i8_internal(i8* nocapture [[C2B]])
; IS________OPM-NEXT: ret void
;
; NOT_TUNIT_OPM-LABEL: define {{[^@]+}}@test13_use_alias() {
; NOT_TUNIT_OPM-NEXT: [[M1:%.*]] = tail call noalias i8* @malloc(i64 noundef 4)
; NOT_TUNIT_OPM-NEXT: call void @use_i8_internal(i8* nocapture [[M1]])
; NOT_TUNIT_OPM-NEXT: call void @use_i8_internal(i8* nocapture [[M1]])
; NOT_TUNIT_OPM-NEXT: ret void
;
%m1 = tail call noalias i8* @malloc(i64 4)
%c1 = bitcast i8* %m1 to i16*
%c2a = bitcast i16* %c1 to i8*
%c2b = bitcast i16* %c1 to i8*
call void @use_i8_internal(i8* %c2a)
call void @use_i8_internal(i8* %c2b)
ret void
}
; TEST 14 i2p casts
define internal i32 @p2i(i32* %arg) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind readnone willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@p2i
; NOT_CGSCC_NPM-SAME: (i32* noalias nofree readnone [[ARG:%.*]]) #[[ATTR0]] {
; NOT_CGSCC_NPM-NEXT: [[P2I:%.*]] = ptrtoint i32* [[ARG]] to i32
; NOT_CGSCC_NPM-NEXT: ret i32 [[P2I]]
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@p2i
; IS__CGSCC____-SAME: (i32* noalias nofree readnone [[ARG:%.*]]) #[[ATTR0]] {
; IS__CGSCC____-NEXT: [[P2I:%.*]] = ptrtoint i32* [[ARG]] to i32
; IS__CGSCC____-NEXT: ret i32 [[P2I]]
;
%p2i = ptrtoint i32* %arg to i32
ret i32 %p2i
}
define i32 @i2p(i32* %arg) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind readonly willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@i2p
; NOT_CGSCC_NPM-SAME: (i32* nofree readonly [[ARG:%.*]]) #[[ATTR4:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: [[C:%.*]] = call i32 @p2i(i32* noalias nofree readnone [[ARG]]) #[[ATTR0]]
; NOT_CGSCC_NPM-NEXT: [[I2P:%.*]] = inttoptr i32 [[C]] to i8*
; NOT_CGSCC_NPM-NEXT: [[BC:%.*]] = bitcast i8* [[I2P]] to i32*
; NOT_CGSCC_NPM-NEXT: [[CALL:%.*]] = call i32 @ret(i32* nocapture nofree readonly align 4 [[BC]]) #[[ATTR4]]
; NOT_CGSCC_NPM-NEXT: ret i32 [[CALL]]
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind readonly willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@i2p
; IS__CGSCC____-SAME: (i32* nofree readonly [[ARG:%.*]]) #[[ATTR4:[0-9]+]] {
; IS__CGSCC____-NEXT: [[C:%.*]] = call i32 @p2i(i32* noalias nofree readnone [[ARG]]) #[[ATTR10:[0-9]+]]
; IS__CGSCC____-NEXT: [[I2P:%.*]] = inttoptr i32 [[C]] to i8*
; IS__CGSCC____-NEXT: [[BC:%.*]] = bitcast i8* [[I2P]] to i32*
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32 @ret(i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[BC]]) #[[ATTR11:[0-9]+]]
; IS__CGSCC____-NEXT: ret i32 [[CALL]]
;
%c = call i32 @p2i(i32* %arg)
%i2p = inttoptr i32 %c to i8*
%bc = bitcast i8* %i2p to i32*
%call = call i32 @ret(i32* %bc)
ret i32 %call
}
define internal i32 @ret(i32* %arg) {
; NOT_CGSCC_NPM: Function Attrs: argmemonly nofree nosync nounwind readonly willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@ret
; NOT_CGSCC_NPM-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR5:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: [[L:%.*]] = load i32, i32* [[ARG]], align 4
; NOT_CGSCC_NPM-NEXT: ret i32 [[L]]
;
; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind readonly willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@ret
; IS__CGSCC____-SAME: (i32* nocapture nofree noundef nonnull readonly align 4 dereferenceable(4) [[ARG:%.*]]) #[[ATTR5:[0-9]+]] {
; IS__CGSCC____-NEXT: [[L:%.*]] = load i32, i32* [[ARG]], align 4
; IS__CGSCC____-NEXT: ret i32 [[L]]
;
%l = load i32, i32* %arg
ret i32 %l
}
; Test to propagate noalias where value is assumed to be no-capture in all the
; uses possibly executed before this callsite.
; IR referred from musl/src/strtod.c file
%struct._IO_FILE = type { i32, i8*, i8*, i32 (%struct._IO_FILE*)*, i8*, i8*, i8*, i8*, i32 (%struct._IO_FILE*, i8*, i32)*, i32 (%struct._IO_FILE*, i8*, i32)*, i64 (%struct._IO_FILE*, i64, i32)*, i8*, i32, %struct._IO_FILE*, %struct._IO_FILE*, i32, i32, i32, i16, i8, i8, i32, i32, i8*, i64, i8*, i8*, i8*, [4 x i8], i64, i64, %struct._IO_FILE*, %struct._IO_FILE*, %struct.__locale_struct*, [4 x i8] }
%struct.__locale_struct = type { [6 x %struct.__locale_map*] }
%struct.__locale_map = type opaque
; Function Attrs: nounwind optsize
define internal fastcc double @strtox(i8* %s, i8** %p, i32 %prec) unnamed_addr {
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@strtox
; NOT_CGSCC_NPM-SAME: (i8* [[S:%.*]]) unnamed_addr {
; NOT_CGSCC_NPM-NEXT: entry:
; NOT_CGSCC_NPM-NEXT: [[F:%.*]] = alloca [[STRUCT__IO_FILE:%.*]], align 8
; NOT_CGSCC_NPM-NEXT: [[TMP0:%.*]] = bitcast %struct._IO_FILE* [[F]] to i8*
; NOT_CGSCC_NPM-NEXT: call void @llvm.lifetime.start.p0i8(i64 noundef 144, i8* nocapture nofree noundef nonnull align 8 dereferenceable(240) [[TMP0]]) #[[ATTR10:[0-9]+]]
; NOT_CGSCC_NPM-NEXT: [[CALL:%.*]] = call i32 bitcast (i32 (...)* @sh_fromstring to i32 (%struct._IO_FILE*, i8*)*)(%struct._IO_FILE* nonnull align 8 dereferenceable(240) [[F]], i8* [[S]])
; NOT_CGSCC_NPM-NEXT: call void @__shlim(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i64 noundef 0)
; NOT_CGSCC_NPM-NEXT: [[CALL1:%.*]] = call double @__floatscan(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i32 noundef 1, i32 noundef 1)
; NOT_CGSCC_NPM-NEXT: call void @llvm.lifetime.end.p0i8(i64 noundef 144, i8* nocapture nofree noundef nonnull align 8 dereferenceable(240) [[TMP0]])
; NOT_CGSCC_NPM-NEXT: ret double [[CALL1]]
;
; IS__CGSCC____-LABEL: define {{[^@]+}}@strtox
; IS__CGSCC____-SAME: (i8* [[S:%.*]]) unnamed_addr {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[F:%.*]] = alloca [[STRUCT__IO_FILE:%.*]], align 8
; IS__CGSCC____-NEXT: [[TMP0:%.*]] = bitcast %struct._IO_FILE* [[F]] to i8*
; IS__CGSCC____-NEXT: call void @llvm.lifetime.start.p0i8(i64 noundef 144, i8* nocapture nofree noundef nonnull align 8 dereferenceable(240) [[TMP0]]) #[[ATTR12:[0-9]+]]
; IS__CGSCC____-NEXT: [[CALL:%.*]] = call i32 bitcast (i32 (...)* @sh_fromstring to i32 (%struct._IO_FILE*, i8*)*)(%struct._IO_FILE* nonnull align 8 dereferenceable(240) [[F]], i8* [[S]])
; IS__CGSCC____-NEXT: call void @__shlim(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i64 noundef 0)
; IS__CGSCC____-NEXT: [[CALL1:%.*]] = call double @__floatscan(%struct._IO_FILE* noundef nonnull align 8 dereferenceable(240) [[F]], i32 noundef 1, i32 noundef 1)
; IS__CGSCC____-NEXT: call void @llvm.lifetime.end.p0i8(i64 noundef 144, i8* nocapture nofree noundef nonnull align 8 dereferenceable(240) [[TMP0]])
; IS__CGSCC____-NEXT: ret double [[CALL1]]
;
entry:
%f = alloca %struct._IO_FILE, align 8
%0 = bitcast %struct._IO_FILE* %f to i8*
call void @llvm.lifetime.start.p0i8(i64 144, i8* nonnull %0)
%call = call i32 bitcast (i32 (...)* @sh_fromstring to i32 (%struct._IO_FILE*, i8*)*)(%struct._IO_FILE* nonnull %f, i8* %s)
call void @__shlim(%struct._IO_FILE* nonnull %f, i64 0)
%call1 = call double @__floatscan(%struct._IO_FILE* nonnull %f, i32 %prec, i32 1)
call void @llvm.lifetime.end.p0i8(i64 144, i8* nonnull %0)
ret double %call1
}
; Function Attrs: nounwind optsize
define dso_local double @strtod(i8* noalias %s, i8** noalias %p) {
; CHECK-LABEL: define {{[^@]+}}@strtod
; CHECK-SAME: (i8* noalias [[S:%.*]], i8** noalias nocapture nofree readnone [[P:%.*]]) {
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = tail call fastcc double @strtox(i8* [[S]])
; CHECK-NEXT: ret double [[CALL]]
;
entry:
%call = tail call fastcc double @strtox(i8* %s, i8** %p, i32 1)
ret double %call
}
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.start.p0i8(i64 immarg, i8* nocapture)
; Function Attrs: optsize
declare dso_local i32 @sh_fromstring(...) local_unnamed_addr
; Function Attrs: optsize
declare dso_local void @__shlim(%struct._IO_FILE*, i64) local_unnamed_addr
; Function Attrs: optsize
declare dso_local double @__floatscan(%struct._IO_FILE*, i32, i32) local_unnamed_addr
; Function Attrs: argmemonly nounwind willreturn
declare void @llvm.lifetime.end.p0i8(i64 immarg, i8* nocapture)
; Test 15
; propagate noalias to some callsite arguments that there is no possibly reachable capture before it
@alias_of_p = external global i32*
define void @make_alias(i32* %p) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@make_alias
; NOT_CGSCC_NPM-SAME: (i32* nofree writeonly [[P:%.*]]) #[[ATTR7:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: store i32* [[P]], i32** @alias_of_p, align 8
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@make_alias
; IS__CGSCC____-SAME: (i32* nofree writeonly [[P:%.*]]) #[[ATTR7:[0-9]+]] {
; IS__CGSCC____-NEXT: store i32* [[P]], i32** @alias_of_p, align 8
; IS__CGSCC____-NEXT: ret void
;
store i32* %p, i32** @alias_of_p
ret void
}
define void @only_store(i32* %p) {
; NOT_CGSCC_NPM: Function Attrs: argmemonly nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@only_store
; NOT_CGSCC_NPM-SAME: (i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P:%.*]]) #[[ATTR8:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: store i32 0, i32* [[P]], align 4
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: argmemonly nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@only_store
; IS__CGSCC____-SAME: (i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P:%.*]]) #[[ATTR8:[0-9]+]] {
; IS__CGSCC____-NEXT: store i32 0, i32* [[P]], align 4
; IS__CGSCC____-NEXT: ret void
;
store i32 0, i32* %p
ret void
}
define void @test15_caller(i32* noalias %p, i32 %c) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@test15_caller
; NOT_CGSCC_NPM-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; NOT_CGSCC_NPM-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; NOT_CGSCC_NPM-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; NOT_CGSCC_NPM: if.then:
; NOT_CGSCC_NPM-NEXT: tail call void @only_store(i32* noalias nocapture nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: br label [[IF_END]]
; NOT_CGSCC_NPM: if.end:
; NOT_CGSCC_NPM-NEXT: tail call void @make_alias(i32* nofree writeonly [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@test15_caller
; IS__CGSCC____-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: tail call void @only_store(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13:[0-9]+]]
; IS__CGSCC____-NEXT: br label [[IF_END]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: tail call void @make_alias(i32* nofree writeonly [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: ret void
;
%tobool = icmp eq i32 %c, 0
br i1 %tobool, label %if.end, label %if.then
if.then:
tail call void @only_store(i32* %p)
br label %if.end
if.end:
tail call void @make_alias(i32* %p)
ret void
}
; Test 16
;
; __attribute__((noinline)) static void test16_sub(int * restrict p, int c1, int c2) {
; if (c1) {
; only_store(p);
; make_alias(p);
; }
; if (!c2) {
; only_store(p);
; }
; }
; void test16_caller(int * restrict p, int c) {
; test16_sub(p, c, c);
; }
;
; FIXME: this should be tail @only_store(i32* noalias %p)
; when test16_caller is called, c1 always equals to c2. (Note that linkage is internal)
; Therefore, only one of the two conditions of if statementes will be fulfilled.
define internal void @test16_sub(i32* noalias %p, i32 %c1, i32 %c2) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@test16_sub
; NOT_CGSCC_NPM-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C1:%.*]], i32 [[C2:%.*]]) #[[ATTR7]] {
; NOT_CGSCC_NPM-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C1]], 0
; NOT_CGSCC_NPM-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; NOT_CGSCC_NPM: if.then:
; NOT_CGSCC_NPM-NEXT: tail call void @only_store(i32* noalias nocapture nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: tail call void @make_alias(i32* nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: br label [[IF_END]]
; NOT_CGSCC_NPM: if.end:
; NOT_CGSCC_NPM-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[C2]], 0
; NOT_CGSCC_NPM-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_END3:%.*]]
; NOT_CGSCC_NPM: if.then2:
; NOT_CGSCC_NPM-NEXT: tail call void @only_store(i32* nocapture nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: br label [[IF_END3]]
; NOT_CGSCC_NPM: if.end3:
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@test16_sub
; IS__CGSCC____-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C1:%.*]], i32 [[C2:%.*]]) #[[ATTR7]] {
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C1]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[IF_END:%.*]], label [[IF_THEN:%.*]]
; IS__CGSCC____: if.then:
; IS__CGSCC____-NEXT: tail call void @only_store(i32* noalias nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: tail call void @make_alias(i32* nofree nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: br label [[IF_END]]
; IS__CGSCC____: if.end:
; IS__CGSCC____-NEXT: [[TOBOOL1:%.*]] = icmp eq i32 [[C2]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL1]], label [[IF_THEN2:%.*]], label [[IF_END3:%.*]]
; IS__CGSCC____: if.then2:
; IS__CGSCC____-NEXT: tail call void @only_store(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: br label [[IF_END3]]
; IS__CGSCC____: if.end3:
; IS__CGSCC____-NEXT: ret void
;
%tobool = icmp eq i32 %c1, 0
br i1 %tobool, label %if.end, label %if.then
if.then:
tail call void @only_store(i32* %p)
tail call void @make_alias(i32* %p)
br label %if.end
if.end:
%tobool1 = icmp eq i32 %c2, 0
br i1 %tobool1, label %if.then2, label %if.end3
if.then2:
tail call void @only_store(i32* %p)
br label %if.end3
if.end3:
ret void
}
define void @test16_caller(i32* %p, i32 %c) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@test16_caller
; NOT_CGSCC_NPM-SAME: (i32* nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; NOT_CGSCC_NPM-NEXT: tail call void @test16_sub(i32* noalias nofree writeonly [[P]], i32 [[C]], i32 [[C]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@test16_caller
; IS__CGSCC____-SAME: (i32* nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; IS__CGSCC____-NEXT: tail call void @test16_sub(i32* noalias nofree writeonly [[P]], i32 [[C]], i32 [[C]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: ret void
;
tail call void @test16_sub(i32* %p, i32 %c, i32 %c)
ret void
}
; test 17
;
; only_store is not called after make_alias is called.
;
; void test17_caller(int* p, int c) {
; if(c) {
; make_alias(p);
; if(0 == 0) {
; goto l3;
; } else {
; goto l2;
; }
; }
; l2:
; only_store(p);
; l3:
; return;
; }
define void @test17_caller(i32* noalias %p, i32 %c) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@test17_caller
; NOT_CGSCC_NPM-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; NOT_CGSCC_NPM-NEXT: entry:
; NOT_CGSCC_NPM-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; NOT_CGSCC_NPM-NEXT: br i1 [[TOBOOL]], label [[L1:%.*]], label [[L2:%.*]]
; NOT_CGSCC_NPM: l1:
; NOT_CGSCC_NPM-NEXT: tail call void @make_alias(i32* nofree writeonly [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: br label [[L3:%.*]]
; NOT_CGSCC_NPM: l2:
; NOT_CGSCC_NPM-NEXT: tail call void @only_store(i32* nocapture nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: br label [[L3]]
; NOT_CGSCC_NPM: l3:
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@test17_caller
; IS__CGSCC____-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[L1:%.*]], label [[L2:%.*]]
; IS__CGSCC____: l1:
; IS__CGSCC____-NEXT: tail call void @make_alias(i32* nofree writeonly [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: br label [[L3:%.*]]
; IS__CGSCC____: l2:
; IS__CGSCC____-NEXT: tail call void @only_store(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: br label [[L3]]
; IS__CGSCC____: l3:
; IS__CGSCC____-NEXT: ret void
;
entry:
%tobool = icmp eq i32 %c, 0
br i1 %tobool, label %l1, label %l2
l1:
tail call void @make_alias(i32* %p)
%tobool2 = icmp eq i32 0, 0
br i1 %tobool2, label %l3, label %l2
l2:
tail call void @only_store(i32* %p)
br label %l3
l3:
ret void
}
; test 18
; void test18_caller(int* p, int c) {
; if(c) {
; make_alias(p);
; noreturn();
; }
; only_store(p);
; return;
; }
define void @noreturn() {
; NOT_CGSCC_NPM: Function Attrs: nofree noreturn nosync nounwind readnone willreturn
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@noreturn
; NOT_CGSCC_NPM-SAME: () #[[ATTR9:[0-9]+]] {
; NOT_CGSCC_NPM-NEXT: unreachable
;
; IS__CGSCC____: Function Attrs: nofree norecurse noreturn nosync nounwind readnone willreturn
; IS__CGSCC____-LABEL: define {{[^@]+}}@noreturn
; IS__CGSCC____-SAME: () #[[ATTR9:[0-9]+]] {
; IS__CGSCC____-NEXT: unreachable
;
call void @noreturn()
ret void
}
define void @test18_caller(i32* noalias %p, i32 %c) {
; NOT_CGSCC_NPM: Function Attrs: nofree nosync nounwind willreturn writeonly
; NOT_CGSCC_NPM-LABEL: define {{[^@]+}}@test18_caller
; NOT_CGSCC_NPM-SAME: (i32* noalias nofree writeonly [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; NOT_CGSCC_NPM-NEXT: entry:
; NOT_CGSCC_NPM-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; NOT_CGSCC_NPM-NEXT: br i1 [[TOBOOL]], label [[L1:%.*]], label [[L2:%.*]]
; NOT_CGSCC_NPM: l1:
; NOT_CGSCC_NPM-NEXT: tail call void @make_alias(i32* nofree writeonly [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: unreachable
; NOT_CGSCC_NPM: l2:
; NOT_CGSCC_NPM-NEXT: tail call void @only_store(i32* nocapture nofree writeonly align 4 [[P]]) #[[ATTR7]]
; NOT_CGSCC_NPM-NEXT: ret void
;
; IS__CGSCC____: Function Attrs: nofree norecurse nosync nounwind willreturn writeonly
; IS__CGSCC____-LABEL: define {{[^@]+}}@test18_caller
; IS__CGSCC____-SAME: (i32* noalias nofree nonnull writeonly align 4 dereferenceable(4) [[P:%.*]], i32 [[C:%.*]]) #[[ATTR7]] {
; IS__CGSCC____-NEXT: entry:
; IS__CGSCC____-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[C]], 0
; IS__CGSCC____-NEXT: br i1 [[TOBOOL]], label [[L1:%.*]], label [[L2:%.*]]
; IS__CGSCC____: l1:
; IS__CGSCC____-NEXT: tail call void @make_alias(i32* nofree nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: unreachable
; IS__CGSCC____: l2:
; IS__CGSCC____-NEXT: tail call void @only_store(i32* nocapture nofree noundef nonnull writeonly align 4 dereferenceable(4) [[P]]) #[[ATTR13]]
; IS__CGSCC____-NEXT: ret void
;
entry:
%tobool = icmp eq i32 %c, 0
br i1 %tobool, label %l1, label %l2
l1:
tail call void @make_alias(i32* %p)
tail call void @noreturn()
br label %l2
l2:
tail call void @only_store(i32* %p)
ret void
}
;.
; NOT_CGSCC_NPM: attributes #[[ATTR0]] = { nofree nosync nounwind readnone willreturn }
; NOT_CGSCC_NPM: attributes #[[ATTR1]] = { nounwind uwtable }
; NOT_CGSCC_NPM: attributes #[[ATTR2]] = { nounwind }
; NOT_CGSCC_NPM: attributes #[[ATTR3]] = { nounwind ssp uwtable }
; NOT_CGSCC_NPM: attributes #[[ATTR4]] = { nofree nosync nounwind readonly willreturn }
; NOT_CGSCC_NPM: attributes #[[ATTR5]] = { argmemonly nofree nosync nounwind readonly willreturn }
; NOT_CGSCC_NPM: attributes #[[ATTR6:[0-9]+]] = { argmemonly nofree nosync nounwind willreturn }
; NOT_CGSCC_NPM: attributes #[[ATTR7]] = { nofree nosync nounwind willreturn writeonly }
; NOT_CGSCC_NPM: attributes #[[ATTR8]] = { argmemonly nofree nosync nounwind willreturn writeonly }
; NOT_CGSCC_NPM: attributes #[[ATTR9]] = { nofree noreturn nosync nounwind readnone willreturn }
; NOT_CGSCC_NPM: attributes #[[ATTR10]] = { willreturn }
;.
; IS__CGSCC____: attributes #[[ATTR0]] = { nofree norecurse nosync nounwind readnone willreturn }
; IS__CGSCC____: attributes #[[ATTR1]] = { nounwind uwtable }
; IS__CGSCC____: attributes #[[ATTR2]] = { nounwind }
; IS__CGSCC____: attributes #[[ATTR3]] = { nounwind ssp uwtable }
; IS__CGSCC____: attributes #[[ATTR4]] = { nofree norecurse nosync nounwind readonly willreturn }
; IS__CGSCC____: attributes #[[ATTR5]] = { argmemonly nofree norecurse nosync nounwind readonly willreturn }
; IS__CGSCC____: attributes #[[ATTR6:[0-9]+]] = { argmemonly nofree nosync nounwind willreturn }
; IS__CGSCC____: attributes #[[ATTR7]] = { nofree norecurse nosync nounwind willreturn writeonly }
; IS__CGSCC____: attributes #[[ATTR8]] = { argmemonly nofree norecurse nosync nounwind willreturn writeonly }
; IS__CGSCC____: attributes #[[ATTR9]] = { nofree norecurse noreturn nosync nounwind readnone willreturn }
; IS__CGSCC____: attributes #[[ATTR10]] = { readnone willreturn }
; IS__CGSCC____: attributes #[[ATTR11]] = { readonly willreturn }
; IS__CGSCC____: attributes #[[ATTR12]] = { willreturn }
; IS__CGSCC____: attributes #[[ATTR13]] = { nounwind willreturn writeonly }
;.
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