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saturating arithmetic modifications

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* Remove the builtins `@addWithSaturation`, `@subWithSaturation`,
   `@mulWithSaturation`, and `@shlWithSaturation` now that we have
   first-class syntax for saturating arithmetic.
 * langref: Clarify the behavior of `@shlExact`.
 * Ast: rename `bit_shift_left` to `shl` and `bit_shift_right` to `shr`
   for consistency.
 * Air: rename to include underscore separator with consistency with
   the rest of the ops.
 * Air: add shl_exact instruction
 * Use non-extended tags for saturating arithmetic, to keep it
   simple so that all the arithmetic operations can be done the same
   way.
   - Sema: unify analyzeArithmetic with analyzeSatArithmetic
     - implement comptime `+|`, `-|`, and `*|`
     - allow float operands to saturating arithmetic
 * `<<|` allows any integer type for the RHS.
 * C backend: fix rebase conflicts
 * LLVM backend: reduce the amount of branching for arithmetic ops
 * zig.h: fix magic number not matching actual size of C integer types
This commit is contained in:
Andrew Kelley
2021-09-28 18:55:43 -07:00
parent 71da169c67
commit 5467582444
23 changed files with 623 additions and 671 deletions
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4
src/stage1/codegen.cpp
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@@ -9134,10 +9134,6 @@ static void define_builtin_fns(CodeGen *g) {
create_builtin_fn(g, BuiltinFnIdReduce, "reduce", 2);
create_builtin_fn(g, BuiltinFnIdMaximum, "maximum", 2);
create_builtin_fn(g, BuiltinFnIdMinimum, "minimum", 2);
create_builtin_fn(g, BuiltinFnIdSatAdd, "addWithSaturation", 2);
create_builtin_fn(g, BuiltinFnIdSatSub, "subWithSaturation", 2);
create_builtin_fn(g, BuiltinFnIdSatMul, "mulWithSaturation", 2);
create_builtin_fn(g, BuiltinFnIdSatShl, "shlWithSaturation", 2);
}
static const char *bool_to_str(bool b) {