| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-attributes |
| ; RUN: opt -passes=function-attrs -S %s | FileCheck %s |
| |
| @g = global i32 20 |
| |
| define void @test_no_read_or_write() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) |
| ; CHECK-LABEL: @test_no_read_or_write( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| ret void |
| } |
| |
| define i32 @test_only_read_arg(ptr %ptr) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) |
| ; CHECK-LABEL: @test_only_read_arg( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: ret i32 [[L]] |
| ; |
| entry: |
| %l = load i32, ptr %ptr |
| ret i32 %l |
| } |
| |
| define i32 @test_only_read_arg_already_has_argmemonly(ptr %ptr) argmemonly { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) |
| ; CHECK-LABEL: @test_only_read_arg_already_has_argmemonly( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: ret i32 [[L]] |
| ; |
| entry: |
| %l = load i32, ptr %ptr |
| ret i32 %l |
| } |
| |
| define i32 @test_read_global() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) |
| ; CHECK-LABEL: @test_read_global( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[L:%.*]] = load i32, ptr @g, align 4 |
| ; CHECK-NEXT: ret i32 [[L]] |
| ; |
| entry: |
| %l = load i32, ptr @g |
| ret i32 %l |
| } |
| |
| define i32 @test_read_loaded_ptr(ptr %ptr) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) |
| ; CHECK-LABEL: @test_read_loaded_ptr( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[L:%.*]] = load ptr, ptr [[PTR:%.*]], align 8 |
| ; CHECK-NEXT: [[L_2:%.*]] = load i32, ptr [[L]], align 4 |
| ; CHECK-NEXT: ret i32 [[L_2]] |
| ; |
| entry: |
| %l = load ptr, ptr %ptr |
| %l.2 = load i32, ptr %l |
| ret i32 %l.2 |
| } |
| |
| define void @test_only_write_arg(ptr %ptr) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) |
| ; CHECK-LABEL: @test_only_write_arg( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: store i32 0, ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| store i32 0, ptr %ptr |
| ret void |
| } |
| |
| define void @test_write_global() { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, inaccessiblemem: none) |
| ; CHECK-LABEL: @test_write_global( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: store i32 0, ptr @g, align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| store i32 0, ptr @g |
| ret void |
| } |
| |
| declare void @fn_may_access_memory() |
| |
| define void @test_call_may_access_memory() { |
| ; CHECK-LABEL: @test_call_may_access_memory( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @fn_may_access_memory() |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void @fn_may_access_memory() |
| ret void |
| } |
| |
| declare i32 @fn_readnone() readnone |
| |
| define void @test_call_readnone(ptr %ptr) { |
| ; CHECK: Function Attrs: memory(argmem: write) |
| ; CHECK-LABEL: @test_call_readnone( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = call i32 @fn_readnone() |
| ; CHECK-NEXT: store i32 [[C]], ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %c = call i32 @fn_readnone() |
| store i32 %c, ptr %ptr |
| ret void |
| } |
| |
| declare i32 @fn_argmemonly(ptr) argmemonly |
| |
| define i32 @test_call_argmemonly(ptr %ptr) { |
| ; CHECK: Function Attrs: memory(argmem: readwrite) |
| ; CHECK-LABEL: @test_call_argmemonly( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = call i32 @fn_argmemonly(ptr [[PTR:%.*]]) |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| entry: |
| %c = call i32 @fn_argmemonly(ptr %ptr) |
| ret i32 %c |
| } |
| |
| define i32 @test_call_fn_where_argmemonly_can_be_inferred(ptr %ptr) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) |
| ; CHECK-LABEL: @test_call_fn_where_argmemonly_can_be_inferred( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[C:%.*]] = call i32 @test_only_read_arg(ptr [[PTR:%.*]]) |
| ; CHECK-NEXT: ret i32 [[C]] |
| ; |
| entry: |
| %c = call i32 @test_only_read_arg(ptr %ptr) |
| ret i32 %c |
| } |
| |
| define void @test_memcpy_argonly(ptr %dst, ptr %src) { |
| ; CHECK: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(argmem: readwrite) |
| ; CHECK-LABEL: @test_memcpy_argonly( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST:%.*]], ptr [[SRC:%.*]], i64 32, i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %src, i64 32, i1 false) |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1) |
| |
| @arr = global [32 x i8] zeroinitializer |
| |
| define void @test_memcpy_src_global(ptr %dst) { |
| ; CHECK: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) |
| ; CHECK-LABEL: @test_memcpy_src_global( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST:%.*]], ptr @arr, i64 32, i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr @arr, i64 32, i1 false) |
| ret void |
| } |
| |
| define void @test_memcpy_dst_global(ptr %src) { |
| ; CHECK: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) |
| ; CHECK-LABEL: @test_memcpy_dst_global( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr @arr, ptr [[SRC:%.*]], i64 32, i1 false) |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| call void @llvm.memcpy.p0.p0.i64(ptr @arr, ptr %src, i64 32, i1 false) |
| ret void |
| } |
| |
| define i32 @test_read_arg_access_alloca(ptr %ptr) { |
| ; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) |
| ; CHECK-LABEL: @test_read_arg_access_alloca( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4 |
| ; CHECK-NEXT: [[L:%.*]] = load i32, ptr [[PTR:%.*]], align 4 |
| ; CHECK-NEXT: store i32 [[L]], ptr [[A]], align 4 |
| ; CHECK-NEXT: [[L_2:%.*]] = load i32, ptr [[A]], align 4 |
| ; CHECK-NEXT: ret i32 [[L_2]] |
| ; |
| entry: |
| %a = alloca i32 |
| %l = load i32, ptr %ptr |
| store i32 %l, ptr %a |
| %l.2 = load i32, ptr %a |
| ret i32 %l.2 |
| } |
| |
| declare void @fn_inaccessiblememonly() inaccessiblememonly |
| |
| define void @test_inaccessiblememonly() { |
| ; CHECK: Function Attrs: memory(inaccessiblemem: readwrite) |
| ; CHECK-LABEL: @test_inaccessiblememonly( |
| ; CHECK-NEXT: call void @fn_inaccessiblememonly() |
| ; CHECK-NEXT: ret void |
| ; |
| call void @fn_inaccessiblememonly() |
| ret void |
| } |
| |
| define void @test_inaccessiblememonly_readonly() { |
| ; CHECK: Function Attrs: nofree memory(inaccessiblemem: read) |
| ; CHECK-LABEL: @test_inaccessiblememonly_readonly( |
| ; CHECK-NEXT: call void @fn_inaccessiblememonly() #[[ATTR16:[0-9]+]] |
| ; CHECK-NEXT: ret void |
| ; |
| call void @fn_inaccessiblememonly() readonly |
| ret void |
| } |
| |
| define void @test_inaccessibleorargmemonly_readonly(ptr %arg) { |
| ; CHECK: Function Attrs: nofree memory(argmem: read, inaccessiblemem: read) |
| ; CHECK-LABEL: @test_inaccessibleorargmemonly_readonly( |
| ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARG:%.*]], align 4 |
| ; CHECK-NEXT: call void @fn_inaccessiblememonly() #[[ATTR16]] |
| ; CHECK-NEXT: ret void |
| ; |
| load i32, ptr %arg |
| call void @fn_inaccessiblememonly() readonly |
| ret void |
| } |
| |
| define void @test_inaccessibleorargmemonly_readwrite(ptr %arg) { |
| ; CHECK: Function Attrs: memory(argmem: write, inaccessiblemem: read) |
| ; CHECK-LABEL: @test_inaccessibleorargmemonly_readwrite( |
| ; CHECK-NEXT: store i32 0, ptr [[ARG:%.*]], align 4 |
| ; CHECK-NEXT: call void @fn_inaccessiblememonly() #[[ATTR16]] |
| ; CHECK-NEXT: ret void |
| ; |
| store i32 0, ptr %arg |
| call void @fn_inaccessiblememonly() readonly |
| ret void |
| } |