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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/basic.carbon
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+1 -3
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@@ -20,7 +20,7 @@
// CHECK:STDOUT: {kind: CrossReference, arg0: ir0, arg1: block3, type: node0},
// CHECK:STDOUT: {kind: FunctionDeclaration, arg0: callable0},
// CHECK:STDOUT: {kind: BindName, arg0: str0, arg1: node4},
// CHECK:STDOUT: {kind: FunctionDefinition, arg0: node4, arg1: block2},
// CHECK:STDOUT: {kind: FunctionDefinition, arg0: node4, arg1: block0},
// CHECK:STDOUT: ]
// CHECK:STDOUT: node_blocks: [
// CHECK:STDOUT: [
@@ -30,8 +30,6 @@
// CHECK:STDOUT: node5,
// CHECK:STDOUT: node6,
// CHECK:STDOUT: ],
// CHECK:STDOUT: [
// CHECK:STDOUT: ],
// CHECK:STDOUT: ]
fn Foo() {}