[LLVMdev] linux/x86-64 codegen support

[Török Edwin]

Andrew Lenharth wrote:
> Interestingly, in the .i file there are 2 __builtin_alloca, and
> EmitBuiltinAlloca is only being called once.
>
>   

Hmm, here EmitBuiltinAlloca gets called twice, but it looks like
validate_arglist is rejecting the args both times.

I have 2 calls to alloca generated:
$ grep alloca x.bc|grep call
        %tmp21 = call i8* @alloca( i64 %tmp20 ) nounwind               
; <i8*> [#uses=1]
        %tmp3 = call i8* @alloca( i64 %tmp2 ) nounwind          ; <i8*>
[#uses=1]

I added some printfs around that code, running cc1 shows it never
reaches the 2nd printf:
4762│   printf("HERE!!\n");
4763│   tree arglist = TREE_OPERAND(exp, 1);
4764├>  if (!validate_arglist(arglist, INTEGER_TYPE, VOID_TYPE))
4765│     return false;
4766│   printf("THERE!!\n")

Is there a way to nicely dump arglist?
gdb's print *arglist shows too much information....

$ /home/edwin/llvm-svn/obj42/./prev-gcc/cc1 charset.i
 vprintf getchar fgetc_unlocked getc_unlocked getchar_unlocked putchar
fputc_unlocked putc_unlocked putchar_unlocked feof_unlocked
ferror_unlocked gnu_dev_major gnu_dev_minor gnu_dev_makedev atof atoi
atol atoll stat lstat fstat mknod cpp_in_system_header ustrcmp ustrncmp
ustrcspn ustrlen uxstrdup ustrchr ufputs one_utf8_to_cppchar
one_cppchar_to_utf8 one_utf8_to_utf32 one_utf32_to_utf8
one_utf8_to_utf16 one_utf16_to_utf8 conversion_loop convert_utf8_utf16
convert_utf8_utf32 convert_utf16_utf8 convert_utf32_utf8
convert_no_conversion convert_using_iconv init_iconv_descHERE!!
 cpp_init_iconv _cpp_destroy_iconv cpp_host_to_exec_charset
width_to_mask ucn_valid_in_identifier _cpp_valid_ucn convert_ucn
emit_numeric_escape convert_hex convert_oct convert_escape
cpp_interpret_string cpp_interpret_string_notranslate
narrow_str_to_charconst wide_str_to_charconst cpp_interpret_charconst
_cpp_interpret_identifierHERE!!
 _cpp_convert_input _cpp_default_encoding cpp_utf8_utf16
Execution times (seconds)
 preprocessing         :   0.02 ( 6%) usr   0.01 ( 6%) sys   0.04 ( 8%)
wall     285 kB ( 6%) ggc
 lexical analysis      :   0.01 ( 3%) usr   0.10 (59%) sys   0.08 (16%)
wall       0 kB ( 0%) ggc
 parser                :   0.06 (19%) usr   0.04 (24%) sys   0.13 (26%)
wall    2756 kB (56%) ggc
 tree gimplify         :   0.01 ( 3%) usr   0.00 ( 0%) sys   0.02 ( 4%)
wall     424 kB ( 9%) ggc
 llvm backend functions:   0.03 ( 9%) usr   0.00 ( 0%) sys   0.03 ( 6%)
wall       1 kB ( 0%) ggc
 llvm backend globals  :   0.01 ( 3%) usr   0.00 ( 0%) sys   0.01 ( 2%)
wall       0 kB ( 0%) ggc
 llvm backend per file :   0.17 (53%) usr   0.01 ( 6%) sys   0.18 (36%)
wall       0 kB ( 0%) ggc
 TOTAL                 :   0.32             0.17             0.50    4953 kB


Best regards,
--Edwin