* Date: Thu, 19 Aug 1999 10:02:32 +0200
* From: Frederic Devernay <devernay@istar.fr>
* Organization: ISTAR
* X-Accept-Language: French, fr, en
* To: gcc-bugs@gcc.gnu.org
* Subject: g77 2.95 bug (Internal compiler error in `final_scan_insn')
* X-UIDL: 08443f5c374ffa382a05573281482f4f

* Here's a bug that happens only when I compile with -O (disappears with
* -O2)

* > g77 -v --save-temps -O -c  pcapop.f
* g77 version 2.95 19990728 (release) (from FSF-g77 version 0.5.25
* 19990728 (release))
* Reading specs from
* /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/2.95/specs
* gcc version 2.95 19990728 (release)
*  /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/2.95/f771 pcapop.f -quiet
* -dumpbase pcapop.f -O -version -fversion -o pcapop.s
* GNU F77 version 2.95 19990728 (release) (sparc-sun-solaris2.6) compiled
* by GNU C version 2.95 19990728 (release).
* GNU Fortran Front End version 0.5.25 19990728 (release)
* pcapop.f: In subroutine `pcapop':
* pcapop.f:291: Internal compiler error in `final_scan_insn', at
* final.c:2920
* Please submit a full bug report.
* See <URL:http://egcs.cygnus.com/faq.html#bugreport> for instructions.

C* PCAPOP
	SUBROUTINE PCAPOP(M1,M2,L1,L2,NMEM,N1,N2,IB,IBB,K3,TF,TS,TC,TTO)
	DIMENSION NVA(6),C(6),I(6)
C
C CALCUL DES PARAMETRES OPTIMAUX N1 N2 IB IBB
C
	TACC=.035
	TTRANS=.000004
	RAD=.000001
	RMI=.000001
	RMU=.0000015
	RDI=.000003
	RTE=.000003
	REQ=.000005
	VY1=3*RTE+RDI+8*REQ+3*(RAD+RMI+RMU)
	VY2=REQ+2*RAD
	AR2=M2*(2*(REQ+RMI)+3*RMU+M1*(2*RAD+REQ))
C     VARIATION DE L1,L2,
C
	TTOTOP=1.E+10
	N1CO=0
	N2CO=0
	IBCO=0
	IBBCO=0
	K3CO=0
	TESOP=0.
	TCOP=0.
	TFOP=0.
	 INUN=7
	 INDE=7
	 IF(M1.LT.128)INUN=6
	 IF(M1.LT.64)INUN=5
	 IF(M1.LT.32)INUN=4
	 IF(M2.LT.128)INDE=6
	 IF(M2.LT.64)INDE=5
	 IF(M2.LT.32)INDE=4
	DO 3 NUN =3,INUN
	DO 3 NDE=3,INDE
	N10=2**NUN
	N20=2**NDE
	NDIF=(N10-N20)
	NDIF=IABS(NDIF)
C POUR AVOIR CES RESULTATS FAIRE TOURNER LE PROGRAMME VEFFT1
	 TCFFTU=0.
	IF(N10.EQ.128.AND.N20.EQ.128)TCFFTU=3.35
	IF(N10.EQ.64.AND.N20.EQ.64)TCFFTU=.70
	IF(N10.EQ.32.AND.N20.EQ.32)TCFFTU=.138
	IF(N10.EQ.16.AND.N20.EQ.16)TCFFTU=.0332
	IF(N10.EQ.8.AND.N20.EQ.8)TCFFTU=.00688
	IF(NDIF.EQ.64)TCFFTU=1.566
	IF(NDIF.EQ.96)TCFFTU=.709
	IF(NDIF.EQ.112)TCFFTU=.349
	IF(NDIF.EQ.120)TCFFTU=.160
	IF(NDIF.EQ.32)TCFFTU=.315
	IF(NDIF.EQ.48)TCFFTU=.154
	IF(NDIF.EQ.56)TCFFTU=.07
	IF(NDIF.EQ.16)TCFFTU=.067
	IF(NDIF.EQ.24)TCFFTU=.030
	IF(NDIF.EQ.8)TCFFTU=.016
	N30=N10-L1+1
	N40=N20-L2+1
	WW=VY1+N30*VY2
	NDOU=2*N10*N20
	IF((N10.LT.L1).OR.(N20.LT.L2)) GOTO 3
	NB=NMEM-NDOU-N20*(L1-1)
	NVC=2*N10*(N20-1)+M1
	IF(NB.LT.(NVC)) GOTO 3
	CALL VALENT(M1,N30,K1)
	CALL VALENT(M2,N40,K2)
	IS=K1/2
	IF((2*IS).NE.K1)K1=K1+1
	    TFF=TCFFTU*K1*K2
	CALL VALENT(M2,N40,JOFI)
	IF(NB.GE.(K1*N20*N30+2*N20*(L1-1))) GOTO 4
	TIOOP=1.E+10
	IC=1
18    IB1=2*IC
	MAX=(NB-2*N20*(L1-1))/(N20*N30)
	IN=MAX/2
	IF(MAX.NE.2*IN) MAX=MAX-1
	K3=K1/IB1
	IBB1=K1-K3*IB1
	IOFI=M1/(IB1*N30)
	IRZ=0
	IF(IOFI*IB1*N30.EQ.M1) GOTO1234
	IRZ=1
	IOFI=IOFI+1
	IF(IBB1.EQ.0) GOTO 1234
	IF(M1.EQ.((IOFI-1)*IB1*N30+IBB1*N30)) GOTO 1233
	IRZ=2
	GOTO 1234
1233  IRZ=3
1234  IBX1=IBB1
	IF(IBX1.EQ.0)IBX1=IB1
	AR1=M2*(2*(RAD+RMI+RMU+REQ)+(M1-(IOFI-1)*IB1*N30)*2*(REQ+RAD))
     %+M2*(3*(REQ+RMU+RAD)+4*RMI+(M1-(IOFI-1)*IB1*N30)*(2*RAD+REQ)
     %+(IOFI-1)*IB1*N30*(2*RMI+REQ+RAD))
	AR5=(JOFI-1)*(N20-L2)*(M1-(IOFI-1)*IB1*N30)*(2*(RAD+RMU)+REQ)
     %*IOFI+(M2-(JOFI-1)*N40+L2-2)*(M1-(IOFI-1)*IB1*N30)*(2*(RAD+RMU
     %)+REQ)*IOFI
	WQ=((IOFI-1)*IB1+IBX1)*JOFI*WW
	AT1=N20*WQ
	AT2=N40*WQ
	QW=JOFI*(VY1+VY2*IB1*N30)
	AT3=IOFI*N40*QW
	AT4=(IOFI-1)*N40*QW
	AT5=JOFI*((IOFI-1)*N40*(IB1/IBX1)*(VY1+IBX1*N30*VY2)
     %+N40*((IB1/IBX1)*(IOFI-1)+1)*(VY1+IBX1*N30*VY2))
	AT6=JOFI*((IOFI-1)*N40*(IB1/2)*(VY1+2*N30*VY2)+N40*(
     %IB1*(IOFI-1)/2+IBX1/2)*(VY1+2*N30*VY2))
	T1=JOFI*N20*(L1-1)*REQ
	T2=M1*(L2-1)*REQ
	T3=JOFI*N20*IBX1*N30*(RAD+REQ)
	T4=JOFI*((IOFI-1)*IB1*N30*N20*(2*RMI+REQ)+IBX1*N30*N20*(2*RMI+R
     %EQ))
	T5=JOFI*((IOFI-1)*IB1/2+IBX1/2)*N20*N30*(2*RAD+REQ)
	T6=2*JOFI*(((IOFI-1)*IB1+IBX1)*N20)*((5*(RMI+RMU)+4*RAD
     %)+(L1-1)*(2*RAD+REQ)+N30*(2*RAD+REQ))
	T7=JOFI*2*((IOFI-1)*IB1+IBX1)*(L1-1)*(2*RAD+REQ)
	T8=JOFI*N10*N20*((IOFI-1)*IB1/2+IBX1/2)*(3*REQ+9*RAD+4*RMU+RMI)
	T9=N10*N20*JOFI*((IOFI-1)*IB1/2+IBX1/2)*(REQ+RMI)+M1*M2*(REQ+R
     %DI+2*RAD)
	T10=JOFI*((IOFI-1)*IB1/2+IBX1/2)*2*(3*RMU+2*(RMI+RAD)+N40*(3*RMI
     %+4*RMU+3*(RAD+REQ)+N30*(2*RAD+REQ)))
	POI=JOFI
	IF(POI.LE.2)POI=2
	TNRAN=(N40+(POI-2)*N20+(M2-(JOFI-1)*N40+L2-1))*(RMI+RMU+RAD
     %+REQ+N30*(2*RAD+2*REQ)*(IB1*(IOFI-1)+IBX1))
	IF(TNRAN.LT.0.)TNRAN=0.
	TCPU=T1+T2+T3+T4+T5+T6+T7+T8+T9+T10+TNRAN
	NVA(1)=N40
	NVA(2)=N40
	NVA(3)=N20
	NVA(4)=N20
	NVA(5)=M2-(JOFI-1)*N40
	NVA(6)=NVA(5)
	C(1)=FLOAT(IB1*N30)/FLOAT(M1)
	C(2)=FLOAT(M1-(IOFI-1)*IB1*N30)/FLOAT(M1)
	C(3)=C(1)
	C(4)=C(2)
	C(5)=C(1)
	C(6)=C(2)
	K=1
	P1=FLOAT(NB)/FLOAT(M1)
10    IP1=P1
	I(K)=1
	IF(IP1.GE.NVA(K)) GOTO 7
	P2=P1
	IP2=P2
8     P2=P2-FLOAT(IP2)*C(K)
	IP2=P2
	IF(IP2.EQ.0) GOTO 3
	IP1=IP1+IP2
	I(K)=I(K)+1
	IF(IP1.GE.NVA(K))GOTO 7
	GOTO 8
7     IF(K.EQ.6) GOTO 11
	K=K+1
	GOTO 10
11    IP1=0
	IP2=0
	IP3=0
	POFI=JOFI
	IF(POFI.LE.2)POFI=2
	TIOL=(I(2)+(IOFI-1)*I(1)+(POFI-2)*(IOFI-1)*I(3)+(POFI-
     %2)*I(4)+(IOFI-1)*I(5)+I(6))*TACC+(IOFI*M1*N40+(POFI-2)*IOFI*
     %M1*N20+(M2-(JOFI-1)*N40+L2-1)*M1*IOFI)*TTRANS
	IF(IBB1.EQ.0) GOTO 33
	IF(IB1.EQ.IBB1) GOTO 33
	IF(IBB1.EQ.2)GOTO 34
	IP3=1
	INL=NMEM/((IOFI-1)*IB1*N30+IBB1*N30)
55    IF(INL.GT.N40)INL=N40
	GOTO 35
33    IF(IB1.GT.2) GOTO 36
	IF((M1-(IOFI-1)*IB1*N30).GE.N30) GOTO 36
34    IP1=1
	INL=NMEM/(2*M1-(IOFI-1)*IB1*N30)
	GOTO 55
36    IP2=1
	INL=NMEM/(IOFI*IB1*N30)
	IF(INL.GT.N40)INL=N40
35    CALL VALENT(N40,INL,KN1)
	CALL VALENT(M2-(JOFI-1)*N40,INL,KN2)
	CALL VALENT(INL*IBB1,IB1,KN3)
	CALL VALENT((N40-(KN1-1)*INL)*IBB1,IB1,KN4)
	IF((IP1+IP2+IP3).NE.1) CALL ERMESF(14)
	TIO1=0.
	IF(IP3.EQ.1)TIO1=N30*M2*TTRANS*(IB1*(IOFI-1)+IBB1)
	IF(IP1.EQ.1)TIO1=M1*M2*TTRANS
	IF(IP2.EQ.1) TIO1=(IB1*N30*M2*IOFI*TTRANS)
	TTIO=2.*TIO1+(KN1*IOFI*(JOFI-1)+KN2*IOFI+(KN1-1)*(
     %JOFI-1)+IOFI*(JOFI-1)+KN2-1.+IOFI+(KN1*(JOFI-1)+KN2))*TACC
     %+M1*M2*TTRANS+TIOL
	IF((IP1.EQ.1).AND.(IRZ.EQ.0))TCPU=TCPU+AT1+AT2+AT3
	IF((IP1.EQ.1).AND.(IRZ.NE.0))TCPU=TCPU+AT1+AT2+AT4+AR1
	IF((IP2.EQ.1).AND.(IRZ.EQ.0))TCPU=TCPU+AT1+AT2+AT3
	IF((IP2.EQ.1).AND.(IRZ.NE.0))TCPU=TCPU+AT1+AT2+AT3+AR2
	IFOIS=IB1/IBX1
	IF((IP3.EQ.1).AND.(IFOIS*IBX1.EQ.IB1))TCPU=TCPU+AT1+AT2+AT5+AR2
	IF((IP3.EQ.1).AND.(IFOIS*IBX1.NE.IB1))TCPU=TCPU+AT1+AT2+AT6+AR2
	IF((IP1.EQ.1).AND.(IRZ.EQ.1))TCPU=TCPU+AR5
	IF((IP1.EQ.1).AND.(IRZ.EQ.2))TCPU=TCPU+AR5
	TTIOG=TTIO+TCPU
	IF(TTIOG.LE.0.) GOTO 99
	IF(TTIOG.GE.TIOOP) GOTO 99
	IBOP=IB1
	IBBOP=IBB1
	K3OP=K3
	TIOOP=TTIOG
	TIOOP1=TTIO
	TIOOP2=TCPU
99    IF(IB1.GE.MAX)GOTO17
	IC=IC+1
	GOTO 18
4     T1=JOFI*N20*(L1-1)*REQ
	T2=M1*(L2-1)*REQ
	T3=JOFI*N20*N30*(RAD+REQ)*K1
	T4=JOFI*(K1*N30*N20*(2*RMI+REQ))
	T5=JOFI*N20*N30*(2*RAD+REQ)*K1/2
	T6=2*JOFI*(K1*N20)*((5*RMI+RMU)+4*RAD+(L1-1)*(2*RAD+REQ)+N30*2*
     %RAD+REQ)
	T7=JOFI*2*K1*(L1-1)*(2*RAD+REQ)
	T9=JOFI*N10*N20*K1*(REQ+RMI)/2+M1*M2*(REQ+RDI+2*RAD)
	T8=JOFI*N10*N20*K1*(3*REQ+9*RAD+4*RMU+RMI)/2
	T10=JOFI*K1*(3*RMU+2*(RMI+RAD)+N40*(3*RMI
     %+4*RMU+3*(RAD+REQ)+N30*(2*RAD+REQ)))
	PIO=JOFI
	IF(PIO.LE.2)PIO=2
	TNR=(N40+(PIO-2)*N20+(M2-(JOFI-1)*N40+L2-1))*(RMU+RMI+RAD+REQ+
     %N30*(2*RAD+2*REQ)*K1)
	IF(TNR.LE.0.)TNR=0.
	BT1=JOFI*N20*WW*K1
	BT2=JOFI*N40*WW*K1
	BT3=JOFI*N40*(VY1+K1*N30*VY2)
	BR1=M2*(2*(RAD+RMI+RMU+REQ)+(M1*2*(REQ+RAD)))+M2*(3*(
     $REQ+RAD+RMU)+4*(RMI)+M1*(2*(RAD)+REQ))
	BR2=M2*(2*(REQ+RMI)+3*RMU+M1*(2*RAD+REQ))
	TCPU=T1+T2+T3+T4+T5+T6+T7+T8+T9+T10
	TCPU=TCPU+TNR+BT1+BT2
	LIOF=M1/(N30)
	IRZ=0
	IF(LIOF*N30.EQ.M1) GOTO 2344
	IRZ=1
2344  IF(IRZ.EQ.0)TCPU=TCPU+BT3
	IF(IRZ.NE.0)TCPU=TCPU+BT3+BR2
	TIOOP=2.*FLOAT(M1)*FLOAT(M2)*TTRANS+2.*FLOAT(K2)*TACC+TCPU
	IBOP=1
	IBBOP=0
	K3OP=1
	TIOOP2=TCPU
	TIOOP1=TIOOP-TCPU
17    TTOT=TIOOP+TFF
	IF(TTOT.LE.0.) GOTO 3
	IF(TTOT.GE.TTOTOP)GOTO3
	N1CO=N10
	N2CO=N20
	IBCO=IBOP
	IBBCO=IBBOP
	K3CO=K3OP
	TTOTOP=TTOT
	TESOP=TIOOP1
	TCOP=TIOOP2
	TFOP=TFF
3     CONTINUE
 
C
	N1=N1CO
	N2=N2CO
	TTO=TTOTOP
	IB=IBCO
	IBB=IBBCO
	K3=K3CO
	TC=TCOP
	TS=TESOP
	TF=TFOP
	   TT=TCOP+TFOP
	  TWER=TTO-TT
	IF(N1.EQ.0.OR.N2.EQ.0) CALL OUTSTR(0,'PAS DE PLACE MEMOIRE SUFFISA
     $NTE POUR UNE MISE EN OEUVRE PAR BLOCS$')
	 IF(IB.NE.1)RETURN
	 IHJ=(M1/(N1-L1+1))
	 IF(IHJ*(N1-L1+1).NE.M1)IHJ=IHJ+1
	  IHJ1=IHJ/2
	 IF(IHJ1*2.NE.IHJ)GOTO7778
	 IB=IHJ
	 IBB=0
	    RETURN
7778   IB=IHJ+1
	 IBB=0
	   RETURN
	 END