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Make function definitions allocate the body more lazily. (#2557)

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Lazy allocation means that we can use a single node block for _all_ empty node blocks. The change in timing for when the definition node is emitted shouldn't affect semantic correctness; the signature is already present for recursive calls.
This commit is contained in:
Jon Ross-Perkins
2023-01-27 11:46:12 -08:00
committed by GitHub
parent 2ffbe72384
commit 94cbb9d917
23 changed files with 78 additions and 117 deletions
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toolchain/semantics/testdata/function/params_two_comma.carbon
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@@ -26,7 +26,7 @@
// CHECK:STDOUT: {kind: BindName, arg0: str1, arg1: node6, type: node2},
// CHECK:STDOUT: {kind: FunctionDeclaration, arg0: callable0},
// CHECK:STDOUT: {kind: BindName, arg0: str2, arg1: node8},
// CHECK:STDOUT: {kind: FunctionDefinition, arg0: node8, arg1: block4},
// CHECK:STDOUT: {kind: FunctionDefinition, arg0: node8, arg1: block0},
// CHECK:STDOUT: ]
// CHECK:STDOUT: node_blocks: [
// CHECK:STDOUT: [
@@ -46,8 +46,6 @@
// CHECK:STDOUT: node9,
// CHECK:STDOUT: node10,
// CHECK:STDOUT: ],
// CHECK:STDOUT: [
// CHECK:STDOUT: ],
// CHECK:STDOUT: ]
fn Foo(a: i32, b: i32,) {}