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[Bug target/40414] gcc 4.4.0 error at postreload.c:396

From: "ami_stuff at o2 dot pl" <gcc-bugzilla at gcc dot gnu dot org>
To: gcc-bugs at gcc dot gnu dot org
Date: 17 Aug 2009 19:33:42 -0000
Subject: [Bug target/40414] gcc 4.4.0 error at postreload.c:396
References: <bug-40414-16717@http.gcc.gnu.org/bugzilla/>
Reply-to: gcc-bugzilla at gcc dot gnu dot org


------- Comment #8 from ami_stuff at o2 dot pl  2009-08-17 19:33 -------
(In reply to comment #7)
> The problem is not with "-funswitch-loops" optimization.
> 
> I get no ICE with these options (-O2 -fipa-cp-clone -finline-functions
> -fgcse-after-reload -ftree-vectorize -fpredictive-commoning):
> 
> OPTFLAGS= -mnobitfield -m68060 -std=c99  -Wdeclaration-after-statement
> -Wdisabled-optimization -fno-math-errno -D_ISOC99_SOURCE
> -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-common
> -fomit-frame-pointer -Wall -Wno-switch -Wpointer-arith -Wredundant-decls
> -Wcast-qual -Wwrite-strings -Wundef -O2 -fipa-cp-clone -finline-functions
> -fgcse-after-reload -ftree-vectorize -fpredictive-commoning
> 
> I get ICE with -O3:
> 
> OPTFLAGS= -mnobitfield -m68060 -std=c99  -Wdeclaration-after-statement
> -Wdisabled-optimization -fno-math-errno -D_ISOC99_SOURCE
> -D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-common
> -fomit-frame-pointer -Wall -Wno-switch -Wpointer-arith -Wredundant-decls
> -Wcast-qual -Wwrite-strings -Wundef -O3
> 
> Also, ICE happens ONLY with -m68060 flag! When I use "-m68020 -m6881" or
> -m68040 there is no ICE!
> 

Sorry, I forgot to add "-funswitch-loops" option, so again:

The problem is not with "-funswitch-loops" optimization.

I get no ICE with these options (-O2 -fipa-cp-clone -finline-functions
-fgcse-after-reload -ftree-vectorize -fpredictive-commoning -funswitch-loops):

OPTFLAGS= -mnobitfield -m68060 -std=c99  -Wdeclaration-after-statement
-Wdisabled-optimization -fno-math-errno -D_ISOC99_SOURCE
-D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-common
-fomit-frame-pointer -Wall -Wno-switch -Wpointer-arith -Wredundant-decls
-Wcast-qual -Wwrite-strings -Wundef -O2 -fipa-cp-clone -finline-functions
-fgcse-after-reload -ftree-vectorize -fpredictive-commoning -funswitch-loops

I get ICE with -O3:

OPTFLAGS= -mnobitfield -m68060 -std=c99  -Wdeclaration-after-statement
-Wdisabled-optimization -fno-math-errno -D_ISOC99_SOURCE
-D_POSIX_C_SOURCE=200112 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -fno-common
-fomit-frame-pointer -Wall -Wno-switch -Wpointer-arith -Wredundant-decls
-Wcast-qual -Wwrite-strings -Wundef -O3

Also, ICE happens ONLY with -m68060 flag! When I use "-m68020 -m6881" or
-m68040 there is no ICE!


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40414

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