diff options
| -rw-r--r-- | gcc/rtl.c | 4 | ||||
| -rw-r--r-- | gcc/rtl.h | 19 |
2 files changed, 16 insertions, 7 deletions
@@ -170,13 +170,13 @@ char rtx_class[] = { /* Names for kinds of NOTEs and REG_NOTEs. */ -char *note_insn_name[] = { "NOTE_INSN_FUNCTION_BEG", "NOTE_INSN_DELETED", +char *note_insn_name[] = { 0 , "NOTE_INSN_DELETED", "NOTE_INSN_BLOCK_BEG", "NOTE_INSN_BLOCK_END", "NOTE_INSN_LOOP_BEG", "NOTE_INSN_LOOP_END", "NOTE_INSN_FUNCTION_END", "NOTE_INSN_SETJMP", "NOTE_INSN_LOOP_CONT", "NOTE_INSN_LOOP_VTOP", "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG", - "NOTE_INSN_DELETED_LABEL"}; + "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG"}; char *reg_note_name[] = { "", "REG_DEAD", "REG_INC", "REG_EQUIV", "REG_WAS_0", "REG_EQUAL", "REG_RETVAL", "REG_LIBCALL", @@ -353,11 +353,17 @@ extern char *reg_note_name[]; #define NOTE_LINE_NUMBER(INSN) ((INSN)->fld[4].rtint) /* Codes that appear in the NOTE_LINE_NUMBER field - for kinds of notes that are not line numbers. */ + for kinds of notes that are not line numbers. -/* This note indicates the end of the real body of the function, - after moving the parms into their homes, etc. */ -#define NOTE_INSN_FUNCTION_BEG 0 + Notice that we do not try to use zero here for any of + the special note codes because sometimes the source line + actually can be zero! This happens (for example) when we + are generating code for the per-translation-unit constructor + and destructor routines for some C++ translation unit. + + If you should change any of the following values, or if you + should add a new value here, don't forget to change the + note_insn_name array in rtl.c. */ /* This note is used to get rid of an insn when it isn't safe to patch the insn out of the chain. */ @@ -384,7 +390,10 @@ extern char *reg_note_name[]; #define NOTE_INSN_EPILOGUE_BEG -11 /* Generated in place of user-declared labels when they are deleted. */ #define NOTE_INSN_DELETED_LABEL -12 -/* Don't forget to change note_insn_name in rtl.c. */ +/* This note indicates the start of the real body of the function, + i.e. the point just after all of the parms have been moved into + their homes, etc. */ +#define NOTE_INSN_FUNCTION_BEG -13 #if 0 /* These are not used, and I don't know what they were for. --rms. */ |