| ; RUN: opt < %s -attributor -attributor-disable=false -S -attributor-annotate-decl-cs | FileCheck %s --check-prefixes=ATTRIBUTOR |
| ; RUN: opt < %s -aa-pipeline=basic-aa -passes='attributor' -attributor-disable=false -S -attributor-annotate-decl-cs | FileCheck %s --check-prefixes=ATTRIBUTOR |
| ; Copied from Transforms/FunctionAttrs/readattrs.ll |
| |
| @x = global i32 0 |
| |
| declare void @test1_1(i8* %x1_1, i8* readonly %y1_1, ...) |
| |
| ; NOTE: readonly for %y1_2 would be OK here but not for the similar situation in test13. |
| ; |
| ; ATTRIBUTOR: define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) |
| define void @test1_2(i8* %x1_2, i8* %y1_2, i8* %z1_2) { |
| call void (i8*, i8*, ...) @test1_1(i8* %x1_2, i8* %y1_2, i8* %z1_2) |
| store i32 0, i32* @x |
| ret void |
| } |
| |
| ; ATTRIBUTOR: define i8* @test2(i8* nofree readnone returned %p) |
| define i8* @test2(i8* %p) { |
| store i32 0, i32* @x |
| ret i8* %p |
| } |
| |
| ; ATTRIBUTOR: define i1 @test3(i8* nofree readnone %p, i8* nofree readnone %q) |
| define i1 @test3(i8* %p, i8* %q) { |
| %A = icmp ult i8* %p, %q |
| ret i1 %A |
| } |
| |
| declare void @test4_1(i8* nocapture) readonly |
| |
| ; ATTRIBUTOR: define void @test4_2(i8* nocapture readonly %p) |
| define void @test4_2(i8* %p) { |
| call void @test4_1(i8* %p) |
| ret void |
| } |
| |
| ; ATTRIBUTOR: define void @test5(i8** nocapture nofree nonnull writeonly align 8 dereferenceable(8) %p, i8* nofree writeonly %q) |
| ; Missed optz'n: we could make %q readnone, but don't break test6! |
| define void @test5(i8** %p, i8* %q) { |
| store i8* %q, i8** %p |
| ret void |
| } |
| |
| declare void @test6_1() |
| ; ATTRIBUTOR: define void @test6_2(i8** nocapture nonnull writeonly align 8 dereferenceable(8) %p, i8* %q) |
| ; This is not a missed optz'n. |
| define void @test6_2(i8** %p, i8* %q) { |
| store i8* %q, i8** %p |
| call void @test6_1() |
| ret void |
| } |
| |
| ; ATTRIBUTOR: define void @test7_1(i32* inalloca nocapture nofree writeonly %a) |
| ; inalloca parameters are always considered written |
| define void @test7_1(i32* inalloca %a) { |
| ret void |
| } |
| |
| ; ATTRIBUTOR: define i32* @test8_1(i32* nofree readnone returned %p) |
| define i32* @test8_1(i32* %p) { |
| entry: |
| ret i32* %p |
| } |
| |
| ; ATTRIBUTOR: define void @test8_2(i32* nocapture nofree writeonly %p) |
| define void @test8_2(i32* %p) { |
| entry: |
| %call = call i32* @test8_1(i32* %p) |
| store i32 10, i32* %call, align 4 |
| ret void |
| } |
| |
| ; ATTRIBUTOR: declare void @llvm.masked.scatter |
| declare void @llvm.masked.scatter.v4i32.v4p0i32(<4 x i32>%val, <4 x i32*>, i32, <4 x i1>) |
| |
| ; ATTRIBUTOR-NOT: readnone |
| ; ATTRIBUTOR-NOT: readonly |
| ; ATTRIBUTOR: define void @test9 |
| define void @test9(<4 x i32*> %ptrs, <4 x i32>%val) { |
| call void @llvm.masked.scatter.v4i32.v4p0i32(<4 x i32>%val, <4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>) |
| ret void |
| } |
| |
| ; ATTRIBUTOR: declare <4 x i32> @llvm.masked.gather |
| declare <4 x i32> @llvm.masked.gather.v4i32.v4p0i32(<4 x i32*>, i32, <4 x i1>, <4 x i32>) |
| ; ATTRIBUTOR: readonly |
| ; ATTRIBUTOR: define <4 x i32> @test10 |
| define <4 x i32> @test10(<4 x i32*> %ptrs) { |
| %res = call <4 x i32> @llvm.masked.gather.v4i32.v4p0i32(<4 x i32*> %ptrs, i32 4, <4 x i1><i1 true, i1 false, i1 true, i1 false>, <4 x i32>undef) |
| ret <4 x i32> %res |
| } |
| |
| ; ATTRIBUTOR: declare <4 x i32> @test11_1 |
| declare <4 x i32> @test11_1(<4 x i32*>) argmemonly nounwind readonly |
| ; ATTRIBUTOR: readonly |
| ; ATTRIBUTOR-NOT: readnone |
| ; ATTRIBUTOR: define <4 x i32> @test11_2 |
| define <4 x i32> @test11_2(<4 x i32*> %ptrs) { |
| %res = call <4 x i32> @test11_1(<4 x i32*> %ptrs) |
| ret <4 x i32> %res |
| } |
| |
| declare <4 x i32> @test12_1(<4 x i32*>) argmemonly nounwind |
| ; ATTRIBUTOR-NOT: readnone |
| ; ATTRIBUTOR: define <4 x i32> @test12_2 |
| define <4 x i32> @test12_2(<4 x i32*> %ptrs) { |
| %res = call <4 x i32> @test12_1(<4 x i32*> %ptrs) |
| ret <4 x i32> %res |
| } |
| |
| ; ATTRIBUTOR: define i32 @volatile_load( |
| ; ATTRIBUTOR-NOT: readonly |
| ; ATTRIBUTOR: ret |
| define i32 @volatile_load(i32* %p) { |
| %load = load volatile i32, i32* %p |
| ret i32 %load |
| } |
| |
| declare void @escape_readnone_ptr(i8** %addr, i8* readnone %ptr) |
| declare void @escape_readonly_ptr(i8** %addr, i8* readonly %ptr) |
| |
| ; The argument pointer %escaped_then_written cannot be marked readnone/only even |
| ; though the only direct use, in @escape_readnone_ptr/@escape_readonly_ptr, |
| ; is marked as readnone/only. However, the functions can write the pointer into |
| ; %addr, causing the store to write to %escaped_then_written. |
| ; |
| ; |
| ; ATTRIBUTOR: define void @unsound_readnone(i8* nocapture nofree readnone %ignored, i8* %escaped_then_written) |
| ; ATTRIBUTOR: define void @unsound_readonly(i8* nocapture nofree readnone %ignored, i8* %escaped_then_written) |
| define void @unsound_readnone(i8* %ignored, i8* %escaped_then_written) { |
| %addr = alloca i8* |
| call void @escape_readnone_ptr(i8** %addr, i8* %escaped_then_written) |
| %addr.ld = load i8*, i8** %addr |
| store i8 0, i8* %addr.ld |
| ret void |
| } |
| |
| define void @unsound_readonly(i8* %ignored, i8* %escaped_then_written) { |
| %addr = alloca i8* |
| call void @escape_readonly_ptr(i8** %addr, i8* %escaped_then_written) |
| %addr.ld = load i8*, i8** %addr |
| store i8 0, i8* %addr.ld |
| ret void |
| } |
| |
| ; Byval but not readonly/none tests |
| ; |
| ;{ |
| declare void @escape_i8(i8* %ptr) |
| |
| ; ATTRIBUTOR: @byval_not_readonly_1 |
| ; ATTRIBUTOR-SAME: i8* noalias byval %written |
| define void @byval_not_readonly_1(i8* byval %written) readonly { |
| call void @escape_i8(i8* %written) |
| ret void |
| } |
| |
| ; ATTRIBUTOR: @byval_not_readonly_2 |
| ; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written |
| define void @byval_not_readonly_2(i8* byval %written) readonly { |
| store i8 0, i8* %written |
| ret void |
| } |
| |
| ; ATTRIBUTOR: @byval_not_readnone_1 |
| ; ATTRIBUTOR-SAME: i8* noalias byval %written |
| define void @byval_not_readnone_1(i8* byval %written) readnone { |
| call void @escape_i8(i8* %written) |
| ret void |
| } |
| |
| ; ATTRIBUTOR: @byval_not_readnone_2 |
| ; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written |
| define void @byval_not_readnone_2(i8* byval %written) readnone { |
| store i8 0, i8* %written |
| ret void |
| } |
| |
| ; ATTRIBUTOR: @byval_no_fnarg |
| ; ATTRIBUTOR-SAME: i8* noalias nocapture nofree nonnull writeonly byval dereferenceable(1) %written |
| define void @byval_no_fnarg(i8* byval %written) { |
| store i8 0, i8* %written |
| ret void |
| } |
| |
| ; ATTRIBUTOR: @testbyval |
| ; ATTRIBUTOR-SAME: i8* nocapture readonly %read_only |
| define void @testbyval(i8* %read_only) { |
| call void @byval_not_readonly_1(i8* %read_only) |
| call void @byval_not_readonly_2(i8* %read_only) |
| call void @byval_not_readnone_1(i8* %read_only) |
| call void @byval_not_readnone_2(i8* %read_only) |
| call void @byval_no_fnarg(i8* %read_only) |
| ret void |
| } |
| ;} |
| |
| declare i8* @maybe_returned_ptr(i8* readonly %ptr) readonly nounwind |
| declare i8 @maybe_returned_val(i8* %ptr) readonly nounwind |
| declare void @val_use(i8 %ptr) readonly nounwind |
| |
| define void @ptr_uses(i8* %ptr) { |
| ; ATTRIBUTOR: define void @ptr_uses(i8* nocapture readonly %ptr) |
| %call_ptr = call i8* @maybe_returned_ptr(i8* %ptr) |
| %call_val = call i8 @maybe_returned_val(i8* %call_ptr) |
| call void @val_use(i8 %call_val) |
| ret void |
| } |