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Re: [Bug middle-end/25568] New: [4.2 regression] RTL checking bootstrap failure on i686-unknown-linux-gnu
- From: Graham Stott <graham dot stott at btinternet dot com>
- To: gcc-bugzilla at gcc dot gnu dot org
- Cc: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 26 Dec 2005 15:58:13 +0000
- Subject: Re: [Bug middle-end/25568] New: [4.2 regression] RTL checking bootstrap failure on i686-unknown-linux-gnu
- References: <bug-25568-578@http.gcc.gnu.org/bugzilla/>
ghazi at gcc dot gnu dot org wrote:
I'm getting an RTL checking bootstrap failure on i686-unknown-linux-gnu. The
bootstrap dies in stage2 like so:
/home/ghazi/tmpdisk/gcc-testing/42/build/./prev-gcc/xgcc
-B/home/ghazi/tmpdisk/gcc-testing/42/build/./prev-gcc/
-B/usr/local/i686-pc-linux-gnu/bin/ -DPACKAGE_NAME=\"\" -DPACKAGE_TARNAME=\"\"
-DPACKAGE_VERSION=\"\" -DPACKAGE_STRING=\"\" -DPACKAGE_BUGREPORT=\"\"
-DPACKAGE=\"zlib\" -DVERSION=\"1.1.4\" -DSTDC_HEADERS=1 -DHAVE_SYS_TYPES_H=1
-DHAVE_SYS_STAT_H=1 -DHAVE_STDLIB_H=1 -DHAVE_STRING_H=1 -DHAVE_MEMORY_H=1
-DHAVE_STRINGS_H=1 -DHAVE_INTTYPES_H=1 -DHAVE_STDINT_H=1 -DHAVE_UNISTD_H=1
-DHAVE_STDLIB_H=1 -DHAVE_UNISTD_H=1 -DHAVE_GETPAGESIZE=1 -DHAVE_MMAP=1
-DHAVE_MEMCPY=1 -DHAVE_STRERROR=1 -DHAVE_UNISTD_H=1 -I.
-I../../egcc-SVN20051225/zlib -O2 -g -fomit-frame-pointer -c -o
libz_a-deflate.o `test -f 'deflate.c' || echo
'../../egcc-SVN20051225/zlib/'`deflate.c
../../egcc-SVN20051225/zlib/deflate.c: In function 'deflateInit2_':
../../egcc-SVN20051225/zlib/deflate.c:312: internal compiler error: RTL check:
expected code 'const_int', have 'const_double' in simplify_shift_const_1, at
combine.c:8923
This is a regression.
The follow patch should fixit
Index: combine.c
===================================================================
--- combine.c (revision 109050)
+++ combine.c (working copy)
@@ -8919,6 +8919,7 @@
&& (new = simplify_const_binary_operation (ASHIFT, result_mode,
XEXP (varop, 1),
GEN_INT (count))) != 0
+ && GET_CODE (new) == CONST_INT
&& merge_outer_ops (&outer_op, &outer_const, PLUS,
INTVAL (new), result_mode, &complement_p))
{
@@ -8937,6 +8938,7 @@
&& (new = simplify_const_binary_operation (code, result_mode,
XEXP (varop, 1),
GEN_INT (count))) != 0
+ && GET_CODE (new) == CONST_INT
&& merge_outer_ops (&outer_op, &outer_const, XOR,
INTVAL (new), result_mode, &complement_p))
{