scp@SFI.SANTAFE.EDU ("Stephen C. Pope") (04/06/89)
While trying to compile Lea's Matrix.4apr code, I ran into
the following problem. I'm using g++-1.34.2, the Tuesday
afternoon distribution, along with a random patch or two
appearing after that distribution. All on a Sun4 SunOS4.0.1,
and using the native assembler.
laotse% g++ -v -g -O -fchar-charconst -I. -fstrength-reduce -c TriDiagMat.cc
g++ version 1.34.2
/usr/local/lib/gcc-cpp -+ -v -I. -undef -D__GNU__ -D__GNUG__ -Dsparc -Dsun -Dunix -D__sparc__ -D__su
n__ -D__unix__ -D__OPTIMIZE__ TriDiagMat.cc /tmp/cca16931.cpp
GNU CPP version 1.34
/usr/local/lib/gcc-c++ /tmp/cca16931.cpp -quiet -dumpbase TriDiagMat.cc -fchar-charconst -fstrength-
reduce -opt -version -G -o /tmp/cca16931.s
GNU C++ version 1.34.2 (sparc) compiled by GNU C version 1.34.
as /tmp/cca16931.s -o TriDiagMat.o
as: "/tmp/cca16931.s", line 2169: error: statement syntax
as: "/tmp/cca16931.s", line 2425: error: statement syntax
as: "/tmp/cca16931.s", line 2862: error: statement syntax
as: "/tmp/cca16931.s", line 3312: error: statement syntax
as: "/tmp/cca16931.s", line 3762: error: statement syntax
as: "/tmp/cca16931.s", line 4212: error: statement syntax
as: "/tmp/cca16931.s", line 4662: error: statement syntax
as: "/tmp/cca16931.s", line 5112: error: statement syntax
as: "/tmp/cca16931.s", line 5483: error: statement syntax
as: "/tmp/cca16931.s", line 5651: error: statement syntax
as: "/tmp/cca16931.s", line 5881: error: statement syntax
as: "/tmp/cca16931.s", line 6376: error: statement syntax
as: "/tmp/cca16931.s", line 7109: error: statement syntax
(Investigating *only* the first error above!!!)
After looking at the .s output, I see that intructions of
the form
mov [%l1], %o2
are being generated. The source line generating this is
in TriDiagMat.h:
inline double& TriDiagMat::ref(int i, int j)
{
return data[r * (j - i + 1) + j]; // this is the culprit here!
}
which is quite kosher.
All the other errors are due to the generation of similar
mov [%l?],%o? instructions.
Stephen Pope
The Santa Fe Institute
scp@sfi.santafe.edutiemann@YAHI.STANFORD.EDU (Michael Tiemann) (04/06/89)
I posted a fix to bug-gcc@prep.ai.mit.edu. I should have CC'd to
bug-g++. Here is the fix:
yahi% diff -c2 sparc.md~ sparc.md
*** sparc.md~ Mon Mar 27 09:37:42 1989
--- sparc.md Tue Apr 4 09:01:36 1989
***************
*** 1496,1503 ****
""
"*
! return (GET_CODE (operands[1]) == CONST_INT
! ? \"sethi %%hi(%1),%0\;or %%lo(%1),%0,%0\"
! : \"mov %1,%0\");
! ")
;;- and instructions (with compliment also)
--- 1496,1506 ----
""
"*
! {
! if (GET_CODE (operands[1]) == MEM)
! return \"ld %1,%0\";
! if (REG_P (operands[1]) || small_int (operands[1]))
! return \"mov %1,%0\";
! return \"sethi %%hi(%1),%0\;or %%lo(%1),%0,%0\";
! }")
;;- and instructions (with compliment also)
yahi%
Don't worry if the line numbers don't match up.
Michael