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sat-arithmetic: add operator support

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- adds initial support for the operators +|, -|, *|, <<|, +|=, -|=, *|=, <<|=
- uses operators in addition to builtins in behavior test
- adds binOpExt() and assignBinOpExt() to AstGen.zig. these need to be audited
This commit is contained in:
Travis Staloch
2021-09-02 13:50:24 -07:00
committed by Andrew Kelley
parent 79bc5891c1
commit 29f41896ed
21 changed files with 556 additions and 54 deletions
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src/codegen/c.zig
+3
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@@ -885,14 +885,17 @@ fn genBody(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail, OutO
// that wrapping is UB.
.add, .ptr_add => try airBinOp( f, inst, " + "),
.addwrap => try airWrapOp(f, inst, " + ", "addw_"),
.addsat => return o.dg.fail("TODO: C backend: implement codegen for addsat", .{}),
// TODO use a different strategy for sub that communicates to the optimizer
// that wrapping is UB.
.sub, .ptr_sub => try airBinOp( f, inst, " - "),
.subwrap => try airWrapOp(f, inst, " - ", "subw_"),
.subsat => return o.dg.fail("TODO: C backend: implement codegen for subsat", .{}),
// TODO use a different strategy for mul that communicates to the optimizer
// that wrapping is UB.
.mul => try airBinOp( f, inst, " * "),
.mulwrap => try airWrapOp(f, inst, " * ", "mulw_"),
.mulsat => return o.dg.fail("TODO: C backend: implement codegen for mulsat", .{}),
// TODO use a different strategy for div that communicates to the optimizer
// that wrapping is UB.
.div => try airBinOp( f, inst, " / "),