Andrew Stubbs wrote:
I'm having trouble with an ICE, and I'm hoping somebody can enlighten me.
Given the following command:
cc1 -fpreprocessed ../pr34330.i -quiet -dumpbase pr34330.c -da -mb
-auxbase-strip pr34330.c -Os -version -ftree-parallelize-loops=4
-ftree-vectorize -o pr34330.s -fschedule-insns
I get an internal compiler error:
GNU C (GCC) version 4.5.0 20090702 (experimental) (sh-linux-gnu)
compiled by GNU C version 4.3.2, GMP version 4.3.1, MPFR version
2.4.1-p5, MPC version 0.6
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU C (GCC) version 4.5.0 20090702 (experimental) (sh-linux-gnu)
compiled by GNU C version 4.3.2, GMP version 4.3.1, MPFR version
2.4.1-p5, MPC version 0.6
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: c91a929a0209c0670a3ae8b8067b9f9a
/scratch/ams/4.4-sh-linux-gnu-lite/src/gcc-trunk-4.4/gcc/testsuite/gcc.dg/torture/pr34330.c:
In function 'foo':
/scratch/ams/4.4-sh-linux-gnu-lite/src/gcc-trunk-4.4/gcc/testsuite/gcc.dg/torture/pr34330.c:22:1:
error: insn does not satisfy its constraints:
(insn 171 170 172 4
/scratch/ams/4.4-sh-linux-gnu-lite/src/gcc-trunk-4.4/gcc/testsuite/gcc.dg/torture/pr34330.c:17
(set (reg:SI 9 r9)
(plus:SI (reg:SI 8 r8)
(reg:SI 0 r0 [orig:243 ivtmp.11 ] [243]))) 35
{*addsi3_compact} (nil))
/scratch/ams/4.4-sh-linux-gnu-lite/src/gcc-trunk-4.4/gcc/testsuite/gcc.dg/torture/pr34330.c:22:1:
internal compiler error: in reload_cse_simplify_operands, at
postreload.c:396
This looks much like PR37053 on m68k/ColdFire; the easiest way to check
if this ICE was caused by the same error is to revert hunk in rtlanal.c:
commutative_operand_precedence() -- see in the PR.
As to the fix, there are several patches being discussed here
(http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00816.html) and here
(http://gcc.gnu.org/ml/gcc-patches/2009-07/msg00823.html).
My $0.02.
--
Maxim
