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Sema: allow comptime blocks for global assembly

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An assembly expression in a comptime block is legal Zig in the case of
global assembly [^1]. Instead of unconditionally asserting that the
expression lives in a runtime block, here we assert that if the
expression lives in a comptime block it must be outside of function
scope.

[^1]: https://ziglang.org/documentation/0.9.1/#Global-Assembly
This commit is contained in:
Daniele Cocca 2022-03-20 20:50:59 +00:00 committed by Veikka Tuominen
parent 5d5282b5f1
commit 633fe41a2c
1 changed files with 5 additions and 1 deletions
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6
src/Sema.zig
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@ -10253,6 +10253,11 @@ fn zirAsm(
const inputs_len = @truncate(u5, extended.small >> 5);
const clobbers_len = @truncate(u5, extended.small >> 10);
const is_volatile = @truncate(u1, extended.small >> 15) != 0;
const is_global_assembly = sema.func == null;
if (block.is_comptime and !is_global_assembly) {
try sema.requireRuntimeBlock(block, src);
}
if (extra.data.asm_source == 0) {
// This can move to become an AstGen error after inline assembly improvements land
@ -10317,7 +10322,6 @@ fn zirAsm(
needed_capacity += (asm_source.len + 3) / 4;
const gpa = sema.gpa;
try sema.requireRuntimeBlock(block, src);
try sema.air_extra.ensureUnusedCapacity(gpa, needed_capacity);
const asm_air = try block.addInst(.{
.tag = .assembly,