0b09313cd5
This builds on the code from D114963, and extends it to handle calls both direct and indirect. With the revised code structure (from series of previously landed NFCs), this is pretty straight forward. One thing to note is that we can not infer writeonly for arguments which might be captured. If the pointer can be read back by the caller, and then read through, we have no way to track that. This is the same restriction we have for readonly, except that we get no mileage out of the "callee can be readonly" exception since a writeonly param on a readonly function is either a) readnone or b) UB. This means we can't actually infer much unless nocapture has already been inferred. Differential Revision: https://reviews.llvm.org/D115003
105 lines
4.3 KiB
C++
105 lines
4.3 KiB
C++
// RUN: %clang_cc1 -O1 -triple wasm32-unknown-unknown -emit-llvm -o - %s \
|
|
// RUN: | FileCheck %s
|
|
// RUN: %clang_cc1 -O1 -triple wasm64-unknown-unknown -emit-llvm -o - %s \
|
|
// RUN: | FileCheck %s
|
|
|
|
#define concat_(x, y) x##y
|
|
#define concat(x, y) concat_(x, y)
|
|
|
|
#define test(T) \
|
|
T forward(T x) { return x; } \
|
|
void use(T x); \
|
|
T concat(def_, T)(void); \
|
|
void concat(test_, T)(void) { use(concat(def_, T)()); }
|
|
|
|
struct one_field {
|
|
double d;
|
|
};
|
|
test(one_field);
|
|
// CHECK: define double @_Z7forward9one_field(double returned %{{.*}})
|
|
//
|
|
// CHECK: define void @_Z14test_one_fieldv()
|
|
// CHECK: %[[call:.*]] = call double @_Z13def_one_fieldv()
|
|
// CHECK: call void @_Z3use9one_field(double %[[call]])
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use9one_field(double)
|
|
// CHECK: declare double @_Z13def_one_fieldv()
|
|
|
|
struct two_fields {
|
|
double d, e;
|
|
};
|
|
test(two_fields);
|
|
// CHECK: define void @_Z7forward10two_fields(%struct.two_fields* noalias nocapture writeonly sret(%struct.two_fields) align 8 %{{.*}}, %struct.two_fields* nocapture readonly byval(%struct.two_fields) align 8 %{{.*}})
|
|
//
|
|
// CHECK: define void @_Z15test_two_fieldsv()
|
|
// CHECK: %[[tmp:.*]] = alloca %struct.two_fields, align 8
|
|
// CHECK: call void @_Z14def_two_fieldsv(%struct.two_fields* nonnull sret(%struct.two_fields) align 8 %[[tmp]])
|
|
// CHECK: call void @_Z3use10two_fields(%struct.two_fields* nonnull byval(%struct.two_fields) align 8 %[[tmp]])
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use10two_fields(%struct.two_fields* byval(%struct.two_fields) align 8)
|
|
// CHECK: declare void @_Z14def_two_fieldsv(%struct.two_fields* sret(%struct.two_fields) align 8)
|
|
|
|
struct copy_ctor {
|
|
double d;
|
|
copy_ctor(copy_ctor const &);
|
|
};
|
|
test(copy_ctor);
|
|
// CHECK: define void @_Z7forward9copy_ctor(%struct.copy_ctor* noalias {{[^,]*}} sret(%struct.copy_ctor) align 8 %{{.*}}, %struct.copy_ctor* nonnull %{{.*}})
|
|
//
|
|
// CHECK: declare %struct.copy_ctor* @_ZN9copy_ctorC1ERKS_(%struct.copy_ctor* {{[^,]*}} returned {{[^,]*}}, %struct.copy_ctor* nonnull align 8 dereferenceable(8))
|
|
//
|
|
// CHECK: define void @_Z14test_copy_ctorv()
|
|
// CHECK: %[[tmp:.*]] = alloca %struct.copy_ctor, align 8
|
|
// CHECK: call void @_Z13def_copy_ctorv(%struct.copy_ctor* nonnull sret(%struct.copy_ctor) align 8 %[[tmp]])
|
|
// CHECK: call void @_Z3use9copy_ctor(%struct.copy_ctor* nonnull %[[tmp]])
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use9copy_ctor(%struct.copy_ctor*)
|
|
// CHECK: declare void @_Z13def_copy_ctorv(%struct.copy_ctor* sret(%struct.copy_ctor) align 8)
|
|
|
|
struct __attribute__((aligned(16))) aligned_copy_ctor {
|
|
double d, e;
|
|
aligned_copy_ctor(aligned_copy_ctor const &);
|
|
};
|
|
test(aligned_copy_ctor);
|
|
// CHECK: define void @_Z7forward17aligned_copy_ctor(%struct.aligned_copy_ctor* noalias {{[^,]*}} sret(%struct.aligned_copy_ctor) align 16 %{{.*}}, %struct.aligned_copy_ctor* nonnull %{{.*}})
|
|
//
|
|
// CHECK: declare %struct.aligned_copy_ctor* @_ZN17aligned_copy_ctorC1ERKS_(%struct.aligned_copy_ctor* {{[^,]*}} returned {{[^,]*}}, %struct.aligned_copy_ctor* nonnull align 16 dereferenceable(16))
|
|
//
|
|
// CHECK: define void @_Z22test_aligned_copy_ctorv()
|
|
// CHECK: %[[tmp:.*]] = alloca %struct.aligned_copy_ctor, align 16
|
|
// CHECK: call void @_Z21def_aligned_copy_ctorv(%struct.aligned_copy_ctor* nonnull sret(%struct.aligned_copy_ctor) align 16 %[[tmp]])
|
|
// CHECK: call void @_Z3use17aligned_copy_ctor(%struct.aligned_copy_ctor* nonnull %[[tmp]])
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use17aligned_copy_ctor(%struct.aligned_copy_ctor*)
|
|
// CHECK: declare void @_Z21def_aligned_copy_ctorv(%struct.aligned_copy_ctor* sret(%struct.aligned_copy_ctor) align 16)
|
|
|
|
struct empty {};
|
|
test(empty);
|
|
// CHECK: define void @_Z7forward5empty()
|
|
//
|
|
// CHECK: define void @_Z10test_emptyv()
|
|
// CHECK: call void @_Z9def_emptyv()
|
|
// CHECK: call void @_Z3use5empty()
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use5empty()
|
|
// CHECK: declare void @_Z9def_emptyv()
|
|
|
|
struct one_bitfield {
|
|
int d : 3;
|
|
};
|
|
test(one_bitfield);
|
|
// CHECK: define i32 @_Z7forward12one_bitfield(i32 returned %{{.*}})
|
|
//
|
|
// CHECK: define void @_Z17test_one_bitfieldv()
|
|
// CHECK: %[[call:.*]] = call i32 @_Z16def_one_bitfieldv()
|
|
// CHECK: call void @_Z3use12one_bitfield(i32 %[[call]])
|
|
// CHECK: ret void
|
|
//
|
|
// CHECK: declare void @_Z3use12one_bitfield(i32)
|
|
// CHECK: declare i32 @_Z16def_one_bitfieldv()
|