getRegister (StPrim primop [x]) -- unary PrimOps
= case primop of
IntNegOp -> trivialUCode (SUB False False g0) x
- IntAbsOp -> absIntCode x
NotOp -> trivialUCode (XNOR False g0) x
FloatNegOp -> trivialUFCode FloatRep (FNEG F) x
#endif {- sparc_TARGET_ARCH -}
\end{code}
-
-%************************************************************************
-%* *
-\subsubsection{Absolute value on integers}
-%* *
-%************************************************************************
-
-Absolute value on integers, mostly for gmp size check macros. Again,
-the argument cannot be an StInt, because genericOpt already folded
-constants.
-
-If applicable, do not fill the delay slots here; you will confuse the
-register allocator.
-
-\begin{code}
-absIntCode :: StixTree -> UniqSM Register
-
-#if alpha_TARGET_ARCH
-absIntCode = panic "MachCode.absIntCode: not on Alphas"
-#endif {- alpha_TARGET_ARCH -}
-
--- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-#if i386_TARGET_ARCH
-
-absIntCode x
- = getRegister x `thenUs` \ register ->
- --getNewRegNCG IntRep `thenUs` \ reg ->
- getUniqLabelNCG `thenUs` \ lbl ->
- let
- code__2 dst = let code = registerCode register dst
- src = registerName register dst
- in code . if isFixed register && dst /= src
- then mkSeqInstrs [MOV L (OpReg src) (OpReg dst),
- TEST L (OpReg dst) (OpReg dst),
- JXX GE lbl,
- NEGI L (OpReg dst),
- LABEL lbl]
- else mkSeqInstrs [TEST L (OpReg src) (OpReg src),
- JXX GE lbl,
- NEGI L (OpReg src),
- LABEL lbl]
- in
- returnUs (Any IntRep code__2)
-
-#endif {- i386_TARGET_ARCH -}
--- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-#if sparc_TARGET_ARCH
-
-absIntCode x
- = getRegister x `thenUs` \ register ->
- getNewRegNCG IntRep `thenUs` \ reg ->
- getUniqLabelNCG `thenUs` \ lbl ->
- let
- code = registerCode register reg
- src = registerName register reg
- code__2 dst = code . mkSeqInstrs [
- SUB False True g0 (RIReg src) dst,
- BI GE False (ImmCLbl lbl), NOP,
- OR False g0 (RIReg src) dst,
- LABEL lbl]
- in
- returnUs (Any IntRep code__2)
-
-#endif {- sparc_TARGET_ARCH -}
-\end{code}
-