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Provide the callee expression to the Call node. (#3291)

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Track the callee expression in full, instead of only tracking the
callee's FunctionId. This results in the `name_reference` denoting the
function actually being used.

Lowering now propagates a `llvm::Function*` as the value associated with
expressions of type `<function>`.

We were not creating `NameReference` node for names produced by member
access into a namespace, such as the second name in
`Namespace.Function`, which caused lowering of calls to such names to
fail. This is now fixed, but the resulting `NameReference` node only
refers to the name and the lookup result, not to the `Namespace.`
qualifier. We'll need to decide how to fit a third operand into that
node (perhaps we can stop storing the `name_id`, since it can be derived
from the lookup result) but for now the qualifier is not tracked.
This commit is contained in:
Richard Smith
2023-10-13 22:06:23 +00:00
committed by GitHub
parent c61b6a0e1d
commit 1ae5fe0cd5
43 changed files with 110 additions and 101 deletions
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toolchain/check/testdata/array/function_param.carbon
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@@ -49,7 +49,7 @@ fn G() -> i32 {
// CHECK:STDOUT: %.loc12_20.13: init [i32; 3] = array_init %.loc12_20.2, (%.loc12_20.6, %.loc12_20.9, %.loc12_20.12) to %.loc12_20.3
// CHECK:STDOUT: %.loc12_20.14: ref [i32; 3] = temporary %.loc12_20.3, %.loc12_20.13
// CHECK:STDOUT: %.loc12_20.15: [i32; 3] = bind_value %.loc12_20.14
// CHECK:STDOUT: %.loc12_11.1: init i32 = call @F(%.loc12_20.15, %.loc12_23)
// CHECK:STDOUT: %.loc12_11.1: init i32 = call %F.ref(%.loc12_20.15, %.loc12_23)
// CHECK:STDOUT: %.loc12_11.2: ref i32 = temporary_storage
// CHECK:STDOUT: %.loc12_11.3: ref i32 = temporary %.loc12_11.2, %.loc12_11.1
// CHECK:STDOUT: %.loc12_11.4: i32 = bind_value %.loc12_11.3