mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Support calling constexpr functions at compile time (#6878)
Example:
```carbon
import Cpp inline '''
constexpr int f(int a, int b) { return a + b; }
''';
let a: array(i32, Cpp.f(1, 2)) = (1, 2, 3);
```
This commit is contained in:
Nicholas Bishop
@@ -197,6 +197,8 @@ fn Call() {
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// CHECK:STDOUT: %D__carbon_thunk: %D__carbon_thunk.type = struct_value () [concrete]
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// CHECK:STDOUT: %X.cpp_destructor.type: type = fn_type @X.cpp_destructor [concrete]
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// CHECK:STDOUT: %X.cpp_destructor: %X.cpp_destructor.type = struct_value () [concrete]
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// CHECK:STDOUT: %X.Op.type: type = fn_type @X.Op [concrete]
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// CHECK:STDOUT: %X.Op: %X.Op.type = struct_value () [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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@@ -243,6 +245,13 @@ fn Call() {
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %X.cpp_destructor.decl: %X.cpp_destructor.type = fn_decl @X.cpp_destructor [concrete = constants.%X.cpp_destructor] {
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// CHECK:STDOUT: %self.patt: %pattern_type.46b = ref_binding_pattern self [concrete]
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// CHECK:STDOUT: %self.param_patt: %pattern_type.46b = ref_param_pattern %self.patt [concrete]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: ref %X = ref_param call_param0
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// CHECK:STDOUT: %self: ref %X = ref_binding self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @Call() {
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@@ -399,9 +408,14 @@ fn Call() {
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// CHECK:STDOUT: %.loc12_7.4: ref %X = value_as_ref %.loc12_7.3
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// CHECK:STDOUT: %addr: %ptr.1f9 = addr_of %.loc12_7.4
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// CHECK:STDOUT: %D__carbon_thunk.call: init %empty_tuple.type = call imports.%D__carbon_thunk.decl(%addr, %.loc12_19.2, %.loc12_22.2)
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc12: <bound method> = bound_method %.loc12_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: %X.Op.bound.loc12: <bound method> = bound_method %.loc12_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc12: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc12: <bound method> = bound_method %.loc12_7.2, %Op.ref.loc12
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// CHECK:STDOUT: %X.cpp_destructor.call.loc12: init %empty_tuple.type = call %X.cpp_destructor.bound.loc12(%.loc12_7.2)
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc10: <bound method> = bound_method %.loc10_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: %X.Op.bound.loc10: <bound method> = bound_method %.loc10_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc10: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc10: <bound method> = bound_method %.loc10_7.2, %Op.ref.loc10
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// CHECK:STDOUT: %X.cpp_destructor.call.loc10: init %empty_tuple.type = call %X.cpp_destructor.bound.loc10(%.loc10_7.2)
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: }
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@@ -475,6 +489,8 @@ fn Call() {
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// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
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// CHECK:STDOUT: %X.cpp_destructor.type: type = fn_type @X.cpp_destructor [concrete]
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// CHECK:STDOUT: %X.cpp_destructor: %X.cpp_destructor.type = struct_value () [concrete]
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// CHECK:STDOUT: %X.Op.type: type = fn_type @X.Op [concrete]
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// CHECK:STDOUT: %X.Op: %X.Op.type = struct_value () [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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@@ -625,6 +641,13 @@ fn Call() {
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// CHECK:STDOUT: %a: %i32 = value_binding a, %a.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
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// CHECK:STDOUT: %X.cpp_destructor.decl: %X.cpp_destructor.type = fn_decl @X.cpp_destructor [concrete = constants.%X.cpp_destructor] {
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// CHECK:STDOUT: %self.patt: %pattern_type.46b = ref_binding_pattern self [concrete]
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// CHECK:STDOUT: %self.param_patt: %pattern_type.46b = ref_param_pattern %self.patt [concrete]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: ref %X = ref_param call_param0
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// CHECK:STDOUT: %self: ref %X = ref_binding self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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@@ -777,9 +800,20 @@ fn Call() {
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// CHECK:STDOUT: %.loc13_7.4: ref %X = value_as_ref %.loc13_7.3
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// CHECK:STDOUT: %addr: %ptr.1f9 = addr_of %.loc13_7.4
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// CHECK:STDOUT: %D__carbon_thunk.call: init %empty_tuple.type = call imports.%D__carbon_thunk.decl(%addr, %.loc13_19.2)
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc13: <bound method> = bound_method %.loc13_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: %X.Op.decl: %X.Op.type = fn_decl @X.Op [concrete = constants.%X.Op] {
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// CHECK:STDOUT: %self.patt: %pattern_type.46b = ref_binding_pattern self [concrete]
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// CHECK:STDOUT: %self.param_patt: %pattern_type.46b = ref_param_pattern %self.patt [concrete]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: ref %X = ref_param call_param0
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// CHECK:STDOUT: %self: ref %X = ref_binding self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %X.Op.bound.loc13: <bound method> = bound_method %.loc13_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc13: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc13: <bound method> = bound_method %.loc13_7.2, %Op.ref.loc13
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// CHECK:STDOUT: %X.cpp_destructor.call.loc13: init %empty_tuple.type = call %X.cpp_destructor.bound.loc13(%.loc13_7.2)
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc11: <bound method> = bound_method %.loc11_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: %X.Op.bound.loc11: <bound method> = bound_method %.loc11_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc11: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc11: <bound method> = bound_method %.loc11_7.2, %Op.ref.loc11
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// CHECK:STDOUT: %X.cpp_destructor.call.loc11: init %empty_tuple.type = call %X.cpp_destructor.bound.loc11(%.loc11_7.2)
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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@@ -810,6 +844,15 @@ fn Call() {
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @X.cpp_destructor(%self.param: ref %X) = "no_op";
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @X.Op(%self.param: ref %X) [thunk imports.%X.cpp_destructor.decl] {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: %Op.ref: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %self.ref: ref %X = name_ref self, %self.param
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// CHECK:STDOUT: %X.cpp_destructor.bound: <bound method> = bound_method %self.ref, %Op.ref
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// CHECK:STDOUT: %X.cpp_destructor.call: init %empty_tuple.type = call %X.cpp_destructor.bound(%self.ref)
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- fail_call_too_few_args.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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@@ -829,8 +872,11 @@ fn Call() {
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// CHECK:STDOUT: %X.C.cpp_overload_set.value: %X.C.cpp_overload_set.type = cpp_overload_set_value @X.C.cpp_overload_set [concrete]
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// CHECK:STDOUT: %X.D.cpp_overload_set.type: type = cpp_overload_set_type @X.D.cpp_overload_set [concrete]
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// CHECK:STDOUT: %X.D.cpp_overload_set.value: %X.D.cpp_overload_set.type = cpp_overload_set_value @X.D.cpp_overload_set [concrete]
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// CHECK:STDOUT: %pattern_type.46b: type = pattern_type %X [concrete]
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// CHECK:STDOUT: %X.cpp_destructor.type: type = fn_type @X.cpp_destructor [concrete]
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// CHECK:STDOUT: %X.cpp_destructor: %X.cpp_destructor.type = struct_value () [concrete]
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// CHECK:STDOUT: %X.Op.type: type = fn_type @X.Op [concrete]
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// CHECK:STDOUT: %X.Op: %X.Op.type = struct_value () [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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@@ -846,6 +892,13 @@ fn Call() {
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// CHECK:STDOUT: %X.B.cpp_overload_set.value: %X.B.cpp_overload_set.type = cpp_overload_set_value @X.B.cpp_overload_set [concrete = constants.%X.B.cpp_overload_set.value]
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// CHECK:STDOUT: %X.C.cpp_overload_set.value: %X.C.cpp_overload_set.type = cpp_overload_set_value @X.C.cpp_overload_set [concrete = constants.%X.C.cpp_overload_set.value]
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// CHECK:STDOUT: %X.D.cpp_overload_set.value: %X.D.cpp_overload_set.type = cpp_overload_set_value @X.D.cpp_overload_set [concrete = constants.%X.D.cpp_overload_set.value]
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// CHECK:STDOUT: %X.cpp_destructor.decl: %X.cpp_destructor.type = fn_decl @X.cpp_destructor [concrete = constants.%X.cpp_destructor] {
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// CHECK:STDOUT: %self.patt: %pattern_type.46b = ref_binding_pattern self [concrete]
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// CHECK:STDOUT: %self.param_patt: %pattern_type.46b = ref_param_pattern %self.patt [concrete]
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// CHECK:STDOUT: } {
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// CHECK:STDOUT: %self.param: ref %X = ref_param call_param0
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// CHECK:STDOUT: %self: ref %X = ref_binding self, %self.param
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @Call() {
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@@ -881,9 +934,14 @@ fn Call() {
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// CHECK:STDOUT: %.loc76_7.2: ref %X = temporary %.loc76_5.2, %.loc76_7.1
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// CHECK:STDOUT: %D.ref: %X.D.cpp_overload_set.type = name_ref D, imports.%X.D.cpp_overload_set.value [concrete = constants.%X.D.cpp_overload_set.value]
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// CHECK:STDOUT: %bound_method.loc76: <bound method> = bound_method %.loc76_7.2, %D.ref
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc76: <bound method> = bound_method %.loc76_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: %X.Op.bound.loc76: <bound method> = bound_method %.loc76_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc76: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc76: <bound method> = bound_method %.loc76_7.2, %Op.ref.loc76
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// CHECK:STDOUT: %X.cpp_destructor.call.loc76: init %empty_tuple.type = call %X.cpp_destructor.bound.loc76(%.loc76_7.2)
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc56: <bound method> = bound_method %.loc56_7.2, constants.%X.cpp_destructor
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// CHECK:STDOUT: %X.Op.bound.loc56: <bound method> = bound_method %.loc56_7.2, constants.%X.Op
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// CHECK:STDOUT: %Op.ref.loc56: %X.cpp_destructor.type = name_ref Op, imports.%X.cpp_destructor.decl [concrete = constants.%X.cpp_destructor]
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// CHECK:STDOUT: %X.cpp_destructor.bound.loc56: <bound method> = bound_method %.loc56_7.2, %Op.ref.loc56
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// CHECK:STDOUT: %X.cpp_destructor.call.loc56: init %empty_tuple.type = call %X.cpp_destructor.bound.loc56(%.loc56_7.2)
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// CHECK:STDOUT: <elided>
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// CHECK:STDOUT: }
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