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compiler: add support for complex add and sub

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This is fairly trivial to add and follows the implementation of gc:
https://github.com/golang/go/blob/170b8b4b12be50eeccbcdadb8523fb4fc670ca72/src/cmd/compile/internal/gc/ssa.go#L2179-L2192
This commit is contained in:
Ayke van Laethem
2019-05-04 22:16:45 +02:00
committed by Ron Evans
parent 1113f9ec0c
commit 638bc17eeb
3 changed files with 28 additions and 0 deletions
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compiler/compiler.go
+16
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@@ -1821,6 +1821,22 @@ func (c *Compiler) parseBinOp(op token.Token, typ types.Type, x, y llvm.Value, p
ieq := c.builder.CreateFCmp(llvm.FloatOEQ, i1, i2, "")
neq := c.builder.CreateAnd(req, ieq, "")
return c.builder.CreateNot(neq, ""), nil
case token.ADD, token.SUB:
var r, i llvm.Value
switch op {
case token.ADD:
r = c.builder.CreateFAdd(r1, r2, "")
i = c.builder.CreateFAdd(i1, i2, "")
case token.SUB:
r = c.builder.CreateFSub(r1, r2, "")
i = c.builder.CreateFSub(i1, i2, "")
default:
panic("unreachable")
}
cplx := llvm.Undef(c.ctx.StructType([]llvm.Type{r.Type(), i.Type()}, false))
cplx = c.builder.CreateInsertValue(cplx, r, 0, "")
cplx = c.builder.CreateInsertValue(cplx, i, 1, "")
return cplx, nil
default:
return llvm.Value{}, c.makeError(pos, "todo: binop on complex number: "+op.String())
}