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| author | Jeffrey A Law <law@cygnus.com> | 1999-08-02 05:53:02 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 1999-08-01 23:53:02 -0600 |
| commit | eec9ef57bf59ea4e488f663e8007d11e6c599f21 (patch) | |
| tree | d3635cb1f31aef2dde23078f449a1cfd2c6ddf75 /gcc | |
| parent | 63429dd7f8b1ccc45f1ea712f7c0a06bdfb7e367 (diff) | |
| download | gcc-eec9ef57bf59ea4e488f663e8007d11e6c599f21.zip gcc-eec9ef57bf59ea4e488f663e8007d11e6c599f21.tar.gz gcc-eec9ef57bf59ea4e488f663e8007d11e6c599f21.tar.bz2 | |
cse.c (cse_insn): Fix loop which deletes insns after a jump that has become an unconditional jump.
* cse.c (cse_insn): Fix loop which deletes insns after a jump
that has become an unconditional jump.
From-SVN: r28388
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 3 | ||||
| -rw-r--r-- | gcc/cse.c | 5 |
2 files changed, 7 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ba8058f..e7b6552 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,8 @@ Sun Aug 1 22:46:42 1999 Jeffrey A Law (law@cygnus.com) + * cse.c (cse_insn): Fix loop which deletes insns after a jump + that has become an unconditional jump. + * m68k.c (output_function_prologue): Fix typo in CPU32 case. (output_function_epilogue): Similarly. @@ -7424,9 +7424,12 @@ cse_insn (insn, libcall_insn) && GET_CODE (NEXT_INSN (p)) != BARRIER && GET_CODE (NEXT_INSN (p)) != CODE_LABEL) { + /* Note, we must update P with the return value from + delete_insn, otherwise we could get an infinite loop + if NEXT_INSN (p) had INSN_DELETED_P set. */ if (GET_CODE (NEXT_INSN (p)) != NOTE || NOTE_LINE_NUMBER (NEXT_INSN (p)) == NOTE_INSN_DELETED) - delete_insn (NEXT_INSN (p)); + p = delete_insn (NEXT_INSN (p)); else p = NEXT_INSN (p); } |