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.

1 files changed, 0 insertions, 9 deletions

diff --git a/powerpc/Asmgen.v b/powerpc/Asmgen.v
index a686414a..1dca4ba4 100644
--- a/powerpc/Asmgen.v
+++ b/powerpc/Asmgen.v
@@ -611,15 +611,6 @@ Definition transl_op
   | Ointoffloat, a1 :: nil =>
       do r1 <- freg_of a1; do r <- ireg_of res;
       OK (Pfcti r r1 :: k)
-  | Ointuoffloat, a1 :: nil =>
-      do r1 <- freg_of a1; do r <- ireg_of res;
-      OK (Pfctiu r r1 :: k)
-  | Ofloatofint, a1 :: nil =>
-      do r1 <- ireg_of a1; do r <- freg_of res;
-      OK (Pfcfi r r1 :: k)
-  | Ofloatofintu, a1 :: nil =>
-      do r1 <- ireg_of a1; do r <- freg_of res;
-      OK (Pfcfiu r r1 :: k)
   | Ofloatofwords, a1 :: a2 :: nil =>
       do r1 <- ireg_of a1; do r2 <- ireg_of a2; do r <- freg_of res;
       OK (Pfmake r r1 r2 :: k)