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optimize @intCast in llvm backend (#24739)

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Rue 2025-08-13 02:56:31 +02:00 committed by GitHub
parent 749f10af49
commit dd4e25cf44
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1 changed files with 22 additions and 15 deletions
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37
src/codegen/llvm.zig
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@ -9234,8 +9234,7 @@ pub const FuncGen = struct {
const dest_is_enum = dest_ty.zigTypeTag(zcu) == .@"enum";
safety: {
if (!safety) break :safety;
bounds_check: {
const dest_scalar = dest_ty.scalarType(zcu);
const operand_scalar = operand_ty.scalarType(zcu);
@ -9254,7 +9253,7 @@ pub const FuncGen = struct {
};
};
if (!have_min_check and !have_max_check) break :safety;
if (!have_min_check and !have_max_check) break :bounds_check;
const operand_llvm_ty = try o.lowerType(pt, operand_ty);
const operand_scalar_llvm_ty = try o.lowerType(pt, operand_scalar);
@ -9272,12 +9271,16 @@ pub const FuncGen = struct {
const vec_ty = ok_maybe_vec.typeOfWip(&fg.wip);
break :ok try fg.wip.callIntrinsic(.normal, .none, .@"vector.reduce.and", &.{vec_ty}, &.{ok_maybe_vec}, "");
} else ok_maybe_vec;
const fail_block = try fg.wip.block(1, "IntMinFail");
const ok_block = try fg.wip.block(1, "IntMinOk");
_ = try fg.wip.brCond(ok, ok_block, fail_block, .none);
fg.wip.cursor = .{ .block = fail_block };
try fg.buildSimplePanic(panic_id);
fg.wip.cursor = .{ .block = ok_block };
if (safety) {
const fail_block = try fg.wip.block(1, "IntMinFail");
const ok_block = try fg.wip.block(1, "IntMinOk");
_ = try fg.wip.brCond(ok, ok_block, fail_block, .none);
fg.wip.cursor = .{ .block = fail_block };
try fg.buildSimplePanic(panic_id);
fg.wip.cursor = .{ .block = ok_block };
} else {
_ = try fg.wip.callIntrinsic(.normal, .none, .assume, &.{}, &.{ok}, "");
}
}
if (have_max_check) {
@ -9288,12 +9291,16 @@ pub const FuncGen = struct {
const vec_ty = ok_maybe_vec.typeOfWip(&fg.wip);
break :ok try fg.wip.callIntrinsic(.normal, .none, .@"vector.reduce.and", &.{vec_ty}, &.{ok_maybe_vec}, "");
} else ok_maybe_vec;
const fail_block = try fg.wip.block(1, "IntMaxFail");
const ok_block = try fg.wip.block(1, "IntMaxOk");
_ = try fg.wip.brCond(ok, ok_block, fail_block, .none);
fg.wip.cursor = .{ .block = fail_block };
try fg.buildSimplePanic(panic_id);
fg.wip.cursor = .{ .block = ok_block };
if (safety) {
const fail_block = try fg.wip.block(1, "IntMaxFail");
const ok_block = try fg.wip.block(1, "IntMaxOk");
_ = try fg.wip.brCond(ok, ok_block, fail_block, .none);
fg.wip.cursor = .{ .block = fail_block };
try fg.buildSimplePanic(panic_id);
fg.wip.cursor = .{ .block = ok_block };
} else {
_ = try fg.wip.callIntrinsic(.normal, .none, .assume, &.{}, &.{ok}, "");
}
}
}