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Stop special-casing empty structs. (#2849)

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This removes special-casing of empty structs, handling them as just a regular value instead of a builtin. Note the `{} as Type` is still special-cased.

In lowering, removes the test of calling a function using `{}` because it's missing the proper load/store. This setup notices that error whereas the prior worked due to said special-casing. Fixing this will need to be done as part of generally adding loads for variable uses.
This commit is contained in:
Jon Ross-Perkins
2023-05-26 10:33:17 -07:00
committed by GitHub
parent 1d56e165ef
commit 76151d1fff
13 changed files with 99 additions and 84 deletions
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toolchain/semantics/testdata/struct/fail_assign_empty.carbon
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@@ -17,12 +17,15 @@
// CHECK:STDOUT: types: [
// CHECK:STDOUT: nodeIntegerType,
// CHECK:STDOUT: node+1,
// CHECK:STDOUT: node+4,
// CHECK:STDOUT: ]
// CHECK:STDOUT: nodes: [
// CHECK:STDOUT: {kind: StructTypeField, arg0: str0, type: nodeIntegerType},
// CHECK:STDOUT: {kind: StructType, arg0: block2, type: nodeTypeType},
// CHECK:STDOUT: {kind: VarStorage, type: node+1},
// CHECK:STDOUT: {kind: BindName, arg0: str1, arg1: node+2, type: node+1},
// CHECK:STDOUT: {kind: StructType, arg0: block0, type: nodeTypeType},
// CHECK:STDOUT: {kind: StructValue, arg0: block0, type: node+4},
// CHECK:STDOUT: {kind: Assign, arg0: node+2, arg1: nodeInvalidType, type: nodeInvalidType},
// CHECK:STDOUT: ]
// CHECK:STDOUT: node_blocks: [
@@ -34,6 +37,8 @@
// CHECK:STDOUT: node+2,
// CHECK:STDOUT: node+3,
// CHECK:STDOUT: node+4,
// CHECK:STDOUT: node+5,
// CHECK:STDOUT: node+6,
// CHECK:STDOUT: ],
// CHECK:STDOUT: [
// CHECK:STDOUT: node+0,