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| author | Jeffrey A Law <law@cygnus.com> | 1999-05-31 13:34:55 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-05-31 07:34:55 -0600 |
| commit | efa90f05afe058d369bddb59c4971026f8aecee8 (patch) | |
| tree | f84e9faad67f2e1fb47e9707dcea1434b28d3292 /gcc | |
| parent | 2f0a2a5b4ac9639466b535fe4d0cb252611901c6 (diff) | |
| download | gcc-efa90f05afe058d369bddb59c4971026f8aecee8.zip gcc-efa90f05afe058d369bddb59c4971026f8aecee8.tar.gz gcc-efa90f05afe058d369bddb59c4971026f8aecee8.tar.bz2 | |
jump.c (jump_optimize_1): Only set CAN_REACH_END if calculate_can_reach_end returns nonzero.
* jump.c (jump_optimize_1): Only set CAN_REACH_END if
calculate_can_reach_end returns nonzero.
From-SVN: r27281
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/jump.c | 14 |
2 files changed, 15 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e83b9fe..a771927 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -18,6 +18,9 @@ Mon May 31 11:40:20 EDT 1999 John Wehle (john@feith.com) Mon May 31 00:46:17 1999 Jeffrey A Law (law@cygnus.com) + * jump.c (jump_optimize_1): Only set CAN_REACH_END if + calculate_can_reach_end returns nonzero. + * configure.in (native gas tests): Search for an assembler in the same manner that the installed compiler will. * configure: Rebuilt. @@ -235,7 +235,12 @@ jump_optimize_1 (f, cross_jump, noop_moves, after_regscan, mark_labels_only) if (!optimize) { - can_reach_end = calculate_can_reach_end (last_insn, 1, 0); + /* CAN_REACH_END is persistent for each function. Once set it should + not be cleared. This is especially true for the case where we + delete the NOTE_FUNCTION_END note. CAN_REACH_END is cleared by + the front-end before compiling each function. */ + if (calculate_can_reach_end (last_insn, 1, 0)) + can_reach_end = 1; /* Zero the "deleted" flag of all the "deleted" insns. */ for (insn = f; insn; insn = NEXT_INSN (insn)) @@ -2068,7 +2073,12 @@ jump_optimize_1 (f, cross_jump, noop_moves, after_regscan, mark_labels_only) } #endif - can_reach_end = calculate_can_reach_end (last_insn, 0, 1); + /* CAN_REACH_END is persistent for each function. Once set it should + not be cleared. This is especially true for the case where we + delete the NOTE_FUNCTION_END note. CAN_REACH_END is cleared by + the front-end before compiling each function. */ + if (calculate_can_reach_end (last_insn, 0, 1)) + can_reach_end = 1; /* Show JUMP_CHAIN no longer valid. */ jump_chain = 0; |