From ef5477a47b49c405744319fbdef0a689b1bf03d4 Mon Sep 17 00:00:00 2001 From: Xavier Leroy Date: Sun, 6 Dec 2020 10:30:51 +0100 Subject: Remove Pfcfi, Pfcfiu, Pfctiu pseudoinstructions Also remove the Ofloatofint, Ofloatofintu, and Ointuoffloat PowerPC operations. The pseudoinstructions were used to implement these operations, as follows: Pfcfi : Ofloatofint i.e. the conversion signed int32 -> float64 Pfcfiu : Ofloatofintu i.e. the conversion unsigned int32 -> float64 Pfctiu : Ointuoffloat i.e. the conversion float64 -> unsigned int32 These pseudoinstructions were expanded (in Asmexpand.ml) in terms of Pfcfid : signed int64 -> float64 Pfctidz : float64 -> signed int64 and int32/int64 conversions. This commit performs this expansion during instruction selection (SelectOp.vp): floatofint(n) becomes floatoflong(longofint(n)) floatofintu(n) becomes floatoflong(longuofint(n)) intuoffloat(n) becomes cast32unsigned(longoffloat(n)) Then there is no need for the 3 removed operations and the 3 removed pseudoinstructions. More importantly, the correctness of these expansions is now proved as part of instruction selection, using the corresponding results from Floats.v. --- powerpc/TargetPrinter.ml | 6 ------ 1 file changed, 6 deletions(-) (limited to 'powerpc/TargetPrinter.ml') diff --git a/powerpc/TargetPrinter.ml b/powerpc/TargetPrinter.ml index 0f608d25..43d2447d 100644 --- a/powerpc/TargetPrinter.ml +++ b/powerpc/TargetPrinter.ml @@ -553,22 +553,16 @@ module Target (System : SYSTEM):TARGET = fprintf oc " fadds %a, %a, %a\n" freg r1 freg r2 freg r3 | Pfcmpu(r1, r2) -> fprintf oc " fcmpu %a, %a, %a\n" creg 0 freg r1 freg r2 - | Pfcfi(r1, r2) -> - assert false | Pfcfl(r1, r2) -> assert false | Pfcfid(r1, r2) -> fprintf oc " fcfid %a, %a\n" freg r1 freg r2 - | Pfcfiu(r1, r2) -> - assert false | Pfcti(r1, r2) -> assert false | Pfctid(r1, r2) -> assert false | Pfctidz(r1, r2) -> fprintf oc " fctidz %a, %a\n" freg r1 freg r2 - | Pfctiu(r1, r2) -> - assert false | Pfctiw(r1, r2) -> fprintf oc " fctiw %a, %a\n" freg r1 freg r2 | Pfctiwz(r1, r2) -> -- cgit