diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/rtl.c | 6 | ||||
| -rw-r--r-- | gcc/rtl.h | 121 |
3 files changed, 84 insertions, 50 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b989295..c0dc920 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2000-04-16 Richard Henderson <rth@cygnus.com> + + * rtl.h (enum insn_note): New enumeration. Subsume + NOTE_INSN_DELETED and friends. + (GET_NOTE_INSN_NAME): Adjust index by NOTE_INSN_BIAS. + * rtl.c (note_insn_name): Tweek string order. + 2000-04-15 Zack Weinberg <zack@wolery.cumb.org> * cpplex.c (_cpp_read_and_prescan): Enlarge len by setting it @@ -235,13 +235,13 @@ const char rtx_class[] = { /* Names for kinds of NOTEs and REG_NOTEs. */ -const char * const note_insn_name[] = +const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS] = { - 0, "NOTE_INSN_DELETED", + "", "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_FUNCTION_END", "NOTE_INSN_SETJMP", "NOTE_INSN_PROLOGUE_END", "NOTE_INSN_EPILOGUE_BEG", "NOTE_INSN_DELETED_LABEL", "NOTE_INSN_FUNCTION_BEG", "NOTE_INSN_EH_REGION_BEG", "NOTE_INSN_EH_REGION_END", @@ -595,56 +595,83 @@ extern const char * const reg_note_name[]; 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. */ -#define NOTE_INSN_DELETED -1 -#define NOTE_INSN_BLOCK_BEG -2 -#define NOTE_INSN_BLOCK_END -3 -#define NOTE_INSN_LOOP_BEG -4 -#define NOTE_INSN_LOOP_END -5 -/* This kind of note is generated at the end of the function body, - just before the return insn or return label. - In an optimizing compilation it is deleted by the first jump optimization, - after enabling that optimizer to determine whether control can fall - off the end of the function body without a return statement. */ -#define NOTE_INSN_FUNCTION_END -6 -/* This kind of note is generated just after each call to `setjmp', et al. */ -#define NOTE_INSN_SETJMP -7 -/* Generated at the place in a loop that `continue' jumps to. */ -#define NOTE_INSN_LOOP_CONT -8 -/* Generated at the start of a duplicated exit test. */ -#define NOTE_INSN_LOOP_VTOP -9 -/* This marks the point immediately after the last prologue insn. */ -#define NOTE_INSN_PROLOGUE_END -10 -/* This marks the point immediately prior to the first epilogue insn. */ -#define NOTE_INSN_EPILOGUE_BEG -11 -/* Generated in place of user-declared labels when they are deleted. */ -#define NOTE_INSN_DELETED_LABEL -12 -/* 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 -/* These note where exception handling regions begin and end. */ -#define NOTE_INSN_EH_REGION_BEG -14 -#define NOTE_INSN_EH_REGION_END -15 -/* Generated whenever a duplicate line number note is output. For example, - one is output after the end of an inline function, in order to prevent - the line containing the inline call from being counted twice in gcov. */ -#define NOTE_REPEATED_LINE_NUMBER -16 - -/* Start/end of a live range region, where pseudos allocated on the stack can - be allocated to temporary registers. */ -#define NOTE_INSN_RANGE_START -17 -#define NOTE_INSN_RANGE_END -18 -/* Record which registers are currently live. */ -#define NOTE_INSN_LIVE -19 -/* Record the struct for the following basic block. */ -#define NOTE_INSN_BASIC_BLOCK -20 +enum insn_note +{ + /* Keep all of these numbers negative. Adjust as needed. */ + NOTE_INSN_BIAS = -100, + + /* This note is used to get rid of an insn + when it isn't safe to patch the insn out of the chain. */ + NOTE_INSN_DELETED, + + /* These are used to mark the beginning and end of a lexical block. + See NOTE_BLOCK, identify_blocks and reorder_blocks. */ + NOTE_INSN_BLOCK_BEG, + NOTE_INSN_BLOCK_END, + + /* These mark the extremes of a loop. */ + NOTE_INSN_LOOP_BEG, + NOTE_INSN_LOOP_END, + + /* Generated at the place in a loop that `continue' jumps to. */ + NOTE_INSN_LOOP_CONT, + /* Generated at the start of a duplicated exit test. */ + NOTE_INSN_LOOP_VTOP, + + /* This kind of note is generated at the end of the function body, + just before the return insn or return label. In an optimizing + compilation it is deleted by the first jump optimization, after + enabling that optimizer to determine whether control can fall + off the end of the function body without a return statement. */ + NOTE_INSN_FUNCTION_END, + + /* This kind of note is generated just after each call to `setjmp', + and similar functions that can return twice. */ + NOTE_INSN_SETJMP, + + /* This marks the point immediately after the last prologue insn. */ + NOTE_INSN_PROLOGUE_END, + + /* This marks the point immediately prior to the first epilogue insn. */ + NOTE_INSN_EPILOGUE_BEG, + + /* Generated in place of user-declared labels when they are deleted. */ + NOTE_INSN_DELETED_LABEL, + + /* 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. */ + NOTE_INSN_FUNCTION_BEG, + + /* These note where exception handling regions begin and end. + Uses NOTE_EH_HANDLER to identify the region in question. */ + NOTE_INSN_EH_REGION_BEG, + NOTE_INSN_EH_REGION_END, + + /* Generated whenever a duplicate line number note is output. For example, + one is output after the end of an inline function, in order to prevent + the line containing the inline call from being counted twice in gcov. */ + NOTE_REPEATED_LINE_NUMBER, + + /* Start/end of a live range region, where pseudos allocated on the stack + can be allocated to temporary registers. Uses NOTE_RANGE_INFO. */ + NOTE_INSN_RANGE_START, + NOTE_INSN_RANGE_END, + + /* Record which registers are currently live. Uses NOTE_LIVE_INFO. */ + NOTE_INSN_LIVE, + + /* Record the struct for the following basic block. Uses NOTE_BASIC_BLOCK. */ + NOTE_INSN_BASIC_BLOCK, + + NOTE_INSN_MAX +}; /* Names for NOTE insn's other than line numbers. */ -extern const char * const note_insn_name[]; -#define GET_NOTE_INSN_NAME(NOTE_CODE) (note_insn_name[-(NOTE_CODE)]) +extern const char * const note_insn_name[NOTE_INSN_MAX - NOTE_INSN_BIAS]; +#define GET_NOTE_INSN_NAME(NOTE_CODE) \ + (note_insn_name[(NOTE_CODE) - NOTE_INSN_BIAS]) /* The name of a label, in case it corresponds to an explicit label in the input source code. */ |