http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54683
Bug #: 54683
Summary: [4.8 Regression] Bootstrap comparison failure
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: dang...@gcc.gnu.org
CC: de...@gcc.gnu.org
Host: hppa*-*-* (dwarf)
Target: hppa*-*-* (dwarf)
Build: hppa*-*-* (dwarf)
The following comparison failures were introduced in revision 191494:
Bootstrap comparison failure!
gcc/builtins.o differs
gcc/rtlanal.o differs
gcc/cp/parser.o differs
gcc/tree-if-conv.o differs
make[2]: *** [compare] Error 1
make[2]: Leaving directory `/home/dave/gnu/gcc/objdir'
dave@mx3210:~/gnu/gcc/objdir/stage3-gcc$ ./xgcc -B./ -v
Reading specs from ./specs
COLLECT_GCC=./xgcc
COLLECT_LTO_WRAPPER=./lto-wrapper
Target: hppa-linux-gnu
Configured with: ../gcc/configure --with-gnu-as --with-gnu-ld --enable-shared
--enable-multiarch --with-multiarch-defaults=hppa-linux-gnu
--enable-linker-build-id --build=hppa-linux-gnu --host=hppa-linux-gnu
--target=hppa-linux-gnu --prefix=/home/dave/opt/gnu/gcc/gcc-4.8.0
--with-local-prefix=/home/dave/opt/gnu --enable-threads=posix
--enable-__cxa_atexit --build=hppa-linux-gnu --enable-clocale=gnu
--enable-java-gc=boehm --without-cloog --without-ppl --enable-languages=c
Thread model: posix
gcc version 4.8.0 20120919 (experimental) [trunk revision 191494] (GCC)
dave@mx3210:~/gnu/gcc/objdir/stage3-gcc$ cmp ../stage2-gcc/builtins.o
builtins.o../stage2-gcc/builtins.o builtins.o differ: byte 1222982, line 8127
There is no difference in code but there is a difference in the
.debug_info section:
dave@mx3210:~/gnu/gcc/objdir/stage3-gcc$ diff -u builtins.o-d2
builtins.o-d3|less
--- builtins.o-d2 2012-09-23 09:38:14.000000000 -0400
+++ builtins.o-d3 2012-09-23 09:39:07.000000000 -0400
@@ -1,5 +1,5 @@
-../stage2-gcc/builtins.o: file format elf32-hppa-linux
+builtins.o: file format elf32-hppa-linux
Contents of the .debug_info section:
@@ -208862,27 +208862,27 @@
Set File Name to entry 2 in the File Name Table
Advance Line by 9843 to 13624
Special opcode 47: advance Address by 12 to 0x2f00 and Line by 0 to 13624
- Extended opcode 4: set Discriminator to 7
+ Extended opcode 4: set Discriminator to 4
Set is_stmt to 0
Special opcode 33: advance Address by 8 to 0x2f08 and Line by 0 to 13624
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 19: advance Address by 4 to 0x2f0c and Line by 0 to 13624
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Set is_stmt to 1
Special opcode 25: advance Address by 4 to 0x2f10 and Line by 6 to 13630
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 15: advance Address by 4 to 0x2f14 and Line by -4 to 13626
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 23: advance Address by 4 to 0x2f18 and Line by 4 to 13630
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 34: advance Address by 8 to 0x2f20 and Line by 1 to 13631
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 62: advance Address by 16 to 0x2f30 and Line by 1 to 13632
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 34: advance Address by 8 to 0x2f38 and Line by 1 to 13633
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 90: advance Address by 24 to 0x2f50 and Line by 1 to 13634
- Extended opcode 4: set Discriminator to 4
+ Extended opcode 4: set Discriminator to 8
Special opcode 62: advance Address by 16 to 0x2f60 and Line by 1 to 13635
Extended opcode 4: set Discriminator to 1
Advance Line by -20 to 13615
@@ -208908,7 +208908,7 @@
Set File Name to entry 2 in the File Name Table
Advance Line by 9843 to 13624
Special opcode 33: advance Address by 8 to 0x2fbc and Line by 0 to 13624
- Extended opcode 4: set Discriminator to 6
+ Extended opcode 4: set Discriminator to 3
Set is_stmt to 0
Special opcode 33: advance Address by 8 to 0x2fc4 and Line by 0 to 13624
Set File Name to entry 4 in the File Name Table
