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Lower CppOverloadSetValue (#6101)

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Following up on comments from
[#5891](https://github.com/carbon-language/carbon-lang/pull/5891) ([
1](https://github.com/carbon-language/carbon-lang/pull/5891#discussion_r2317244981),
[2](https://github.com/carbon-language/carbon-lang/pull/5891#discussion_r2317266756)).

Lowering `CppOverloadSetValue` as an empty struct value, using
`context.GetLiteralAsValue()`. Also changed its constant kind to
`InstConstantKind::Always`.

Part of https://github.com/carbon-language/carbon-lang/issues/5915
This commit is contained in:
Ivana Ivanovska
2025-10-01 16:25:05 +00:00
committed by GitHub
parent 4a6376cf59
commit a24598f069
40 changed files with 838 additions and 698 deletions
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toolchain/check/testdata/interop/cpp/stdlib/string_view.carbon
Vendored
+6 -6
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@@ -61,7 +61,7 @@ fn G() -> str {
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %.fd2: type = cpp_overload_set_type @Consume__carbon_thunk [concrete]
// CHECK:STDOUT: %empty_struct.c28: %.fd2 = struct_value () [concrete]
// CHECK:STDOUT: %.f17: %.fd2 = cpp_overload_set_value @Consume__carbon_thunk [concrete]
// CHECK:STDOUT: %str.ee0: type = class_type @String [concrete]
// CHECK:STDOUT: %int_64: Core.IntLiteral = int_value 64 [concrete]
// CHECK:STDOUT: %u64: type = class_type @UInt, @UInt(%int_64) [concrete]
@@ -78,7 +78,7 @@ fn G() -> str {
// CHECK:STDOUT: %G.type: type = fn_type @G [concrete]
// CHECK:STDOUT: %G: %G.type = struct_value () [concrete]
// CHECK:STDOUT: %.a47: type = cpp_overload_set_type @G [concrete]
// CHECK:STDOUT: %empty_struct.ab9: %.a47 = struct_value () [concrete]
// CHECK:STDOUT: %.5d1: %.a47 = cpp_overload_set_value @G [concrete]
// CHECK:STDOUT: %Produce__carbon_thunk.type: type = fn_type @Produce__carbon_thunk [concrete]
// CHECK:STDOUT: %Produce__carbon_thunk: %Produce__carbon_thunk.type = struct_value () [concrete]
// CHECK:STDOUT: }
@@ -89,13 +89,13 @@ fn G() -> str {
// CHECK:STDOUT: .Produce = %.5d1
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %.f17: %.fd2 = cpp_overload_set_value @Consume__carbon_thunk [concrete = constants.%empty_struct.c28]
// CHECK:STDOUT: %.f17: %.fd2 = cpp_overload_set_value @Consume__carbon_thunk [concrete = constants.%.f17]
// CHECK:STDOUT: %Consume__carbon_thunk.decl: %Consume__carbon_thunk.type = fn_decl @Consume__carbon_thunk [concrete = constants.%Consume__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT: %.5d1: %.a47 = cpp_overload_set_value @G [concrete = constants.%empty_struct.ab9]
// CHECK:STDOUT: %.5d1: %.a47 = cpp_overload_set_value @G [concrete = constants.%.5d1]
// CHECK:STDOUT: %Produce__carbon_thunk.decl: %Produce__carbon_thunk.type = fn_decl @Produce__carbon_thunk [concrete = constants.%Produce__carbon_thunk] {
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: } {
@@ -117,7 +117,7 @@ fn G() -> str {
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Consume.ref: %.fd2 = name_ref Consume, imports.%.f17 [concrete = constants.%empty_struct.c28]
// CHECK:STDOUT: %Consume.ref: %.fd2 = name_ref Consume, imports.%.f17 [concrete = constants.%.f17]
// CHECK:STDOUT: %str: %ptr.3e8 = string_literal "hello" [concrete = constants.%str.3b1]
// CHECK:STDOUT: %int_5: %u64 = int_value 5 [concrete = constants.%int_5]
// CHECK:STDOUT: %String.val: %str.ee0 = struct_value (%str, %int_5) [concrete = constants.%String.val]
@@ -130,7 +130,7 @@ fn G() -> str {
// CHECK:STDOUT: fn @G() -> %return.param: %str.ee0 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %Cpp.ref: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Produce.ref: %.a47 = name_ref Produce, imports.%.5d1 [concrete = constants.%empty_struct.ab9]
// CHECK:STDOUT: %Produce.ref: %.a47 = name_ref Produce, imports.%.5d1 [concrete = constants.%.5d1]
// CHECK:STDOUT: %.loc13: ref %str.ee0 = splice_block %return {}
// CHECK:STDOUT: %addr: %ptr.85f = addr_of %.loc13
// CHECK:STDOUT: %Produce__carbon_thunk.call: init %empty_tuple.type = call imports.%Produce__carbon_thunk.decl(%addr)