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[Bug bootstrap/36974] [4.4 Regression]: Gcc failed to bootstrap



------- Comment #2 from hjl dot tools at gmail dot com  2008-07-30 16:26 -------
call_from_call_insn doesn't support:

(gdb) b fancy_abort 
Breakpoint 1 at 0x4000000000317081: file ../../src/gcc/diagnostic.c, line 689.
(gdb) r
Starting program: /export/gnu/import/svn/gcc-test/bld/gcc/cc1 -fpreprocessed
foo.i -quiet -dumpbase foo.i -auxbase foo -O -version -o foo.s
GNU C (GCC) version 4.4.0 20080730 (experimental) [trunk revision 138310]
(ia64-unknown-linux-gnu)
        compiled by GNU C version 4.1.2 20071124 (Red Hat 4.1.2-42), GMP
version 4.2.2, MPFR version 2.3.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: fd482fe43a51139098c909d8f96fdc49

Breakpoint 1, fancy_abort (file=0x400000000145bf10 "../../src/gcc/final.c", 
    line=1760, function=0x400000000145c000 "call_from_call_insn")
    at ../../src/gcc/diagnostic.c:689
689       internal_error ("in %s, at %s:%d", function, trim_filename (file),
line);
(gdb) f 1
#1  0x4000000000458050 in call_from_call_insn (insn=0x2000000003c8d310)
    at ../../src/gcc/final.c:1760
1760              gcc_unreachable ();
(gdb) call debug_rtx (insn)
(call_insn 51 83 84 5 foo.i:10 (cond_exec (eq (reg:BI 262 p6 [353])
            (const_int 0 [0x0]))
        (parallel [
                (call (mem:DI (symbol_ref:DI ("abort") [flags 0x41]
<function_decl 0x2000000003d2dc00 abort>) [0 S8 A64])
                    (const_int 0 [0x0]))
                (clobber (reg:DI 320 b0))
            ])) 1114 {divdf3_internal_thr+317} (expr_list:REG_BR_PROB
(const_int 100 [0x64])
        (expr_list:REG_EH_REGION (const_int 0 [0x0])
            (expr_list:REG_NORETURN (const_int 0 [0x0])
                (nil))))
    (expr_list:REG_DEP_TRUE (use (reg:DI 1 r1))
        (nil)))
(gdb) 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36974


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