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llvm.FuncGen: fix C ABI zero extension of bool

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closes https://codeberg.org/ziglang/zig/issues/35373
This commit is contained in:
Alex Rønne Petersen
2026-05-21 18:25:33 +02:00
parent 0d4f3cc675
commit c00966d11d
1 changed files with 12 additions and 10 deletions
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src/codegen/llvm/FuncGen.zig
+12 -10
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@@ -7122,8 +7122,8 @@ fn lowerSystemVFnRetTy(o: *Object, fn_info: InternPool.Key.FuncType) Allocator.E
}
/// This function deliberately does not handle `_BitInt` because it typically
/// has different ABI than regular integer types, and there is no currently no
/// way to determine whether a Zig integer type is meant to represent e.g. `int`
/// has different ABI than regular integer types, and there is currently no way
/// to determine whether a Zig integer type is meant to represent e.g. `int`
/// or `_BitInt(32)`.
pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std.lang.Signedness {
switch (cc) {
@@ -7131,11 +7131,13 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
else => {},
}
const int_info = switch (ty.zigTypeTag(zcu)) {
const ty_tag = ty.zigTypeTag(zcu);
const int_info = switch (ty_tag) {
.bool => Type.u1.intInfo(zcu),
else => if (ty.isAbiInt(zcu)) ty.intInfo(zcu) else return null,
};
assert(int_info.bits >= 0);
assert(int_info.bits == 0 or (int_info.bits == 1 and ty_tag == .bool) or std.math.isPowerOfTwo(int_info.bits));
const target = zcu.getTarget();
return switch (target.cpu.arch) {
@@ -7143,7 +7145,7 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
.aarch64_be,
=> switch (target.os.tag) {
.driverkit, .ios, .maccatalyst, .macos, .tvos, .visionos, .watchos => switch (int_info.bits) {
8, 16 => int_info.signedness,
1, 8, 16 => int_info.signedness,
else => null,
},
else => null,
@@ -7151,7 +7153,7 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
.avr,
=> switch (int_info.bits) {
8 => int_info.signedness,
1, 8 => int_info.signedness,
else => null,
},
@@ -7162,7 +7164,7 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
.riscv64,
.riscv64be,
=> switch (int_info.bits) {
8, 16 => int_info.signedness,
1, 8, 16 => int_info.signedness,
32 => .signed,
else => null,
},
@@ -7172,7 +7174,7 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
.mips64,
.mips64el,
=> switch (int_info.bits) {
8, 16, 64 => int_info.signedness,
1, 8, 16, 64 => int_info.signedness,
32 => .signed,
else => null,
},
@@ -7183,12 +7185,12 @@ pub fn ccAbiPromoteInt(cc: std.lang.CallingConvention, zcu: *Zcu, ty: Type) ?std
.sparc64,
.ve,
=> switch (int_info.bits) {
8, 16, 32 => int_info.signedness,
1, 8, 16, 32 => int_info.signedness,
else => null,
},
else => switch (int_info.bits) {
8, 16 => int_info.signedness,
1, 8, 16 => int_info.signedness,
else => null,
},
};