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Add GlobalInit to blocks to emit initialization instructions for globals (#3687)

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`GlobalInit` block is now static block within a `SemIR` which will be
used to emit initialization instructions for variables in the `Package`
scope.

inst_block_stack now has additional methods to handle `GlobalInit` block
separately, this block can be popped without being finalized allowing to
accumulate between all instances of variables.

At the end of the `check` phase, if this block is not empty , the
function `__global_init` will be added with this block being inserted
into it.

This block is pushed to `inst_block_scope` at the end `BindName`,
allowing instruction to be emitted into it, then popped at the semicolon
(VariableDecl).

This significantly changes the `SemIR` output, that's why this commit
updates a lot of the test cases.
This commit is contained in:
Gıyaseddin Tanrıkulu
2024-02-09 16:21:57 +00:00
committed by GitHub
parent 475ecca339
commit bdff7ccf28
94 changed files with 1256 additions and 604 deletions
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toolchain/check/testdata/package_expr/syntax.carbon
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+14 -4
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@@ -53,8 +53,6 @@ fn Main() {
// CHECK:STDOUT: package: <namespace> = namespace {.x = %x, .Main = %Main} [template]
// CHECK:STDOUT: %x.var: ref i32 = var x
// CHECK:STDOUT: %x: ref i32 = bind_name x, %x.var
// CHECK:STDOUT: %.loc4: i32 = int_literal 0 [template = constants.%.1]
// CHECK:STDOUT: assign %x.var, %.loc4
// CHECK:STDOUT: %Main: <function> = fn_decl @Main [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
@@ -73,6 +71,13 @@ fn Main() {
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc4: i32 = int_literal 0 [template = constants.%.1]
// CHECK:STDOUT: assign file.%x.var, %.loc4
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- inside_fn.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
@@ -84,8 +89,6 @@ fn Main() {
// CHECK:STDOUT: package: <namespace> = namespace {.x = %x, .Main = %Main} [template]
// CHECK:STDOUT: %x.var: ref i32 = var x
// CHECK:STDOUT: %x: ref i32 = bind_name x, %x.var
// CHECK:STDOUT: %.loc4: i32 = int_literal 0 [template = constants.%.1]
// CHECK:STDOUT: assign %x.var, %.loc4
// CHECK:STDOUT: %Main: <function> = fn_decl @Main [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
@@ -104,6 +107,13 @@ fn Main() {
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @__global_init() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc4: i32 = int_literal 0 [template = constants.%.1]
// CHECK:STDOUT: assign file.%x.var, %.loc4
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- namespace.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {